/*
 * ffplay_def.c
 *
 * Copyright (c) 2003 Fabrice Bellard
 * Copyright (c) 2013 Zhang Rui <bbcallen@gmail.com>
 *
 * This file is part of ijkPlayer.
 *
 * ijkPlayer is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * ijkPlayer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with ijkPlayer; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "ff_ffplay.h"

#include <math.h>
#include "ff_cmdutils.h"
#include "ff_fferror.h"

// FIXME: 9 work around NDKr8e or gcc4.7 bug
// isnan() may not recognize some double NAN, so we test both double and float
#if defined(__ANDROID__)
#ifdef isnan
#undef isnan
#endif
#define isnan(x) (isnan((double)(x)) || isnanf((float)(x)))
#endif

#if defined(__ANDROID__)
#define printf(...) ALOGD(__VA_ARGS__)
#endif

// #define FFP_SHOW_FPS
// #define FFP_SHOW_VDPS
// #define FFP_SHOW_AUDIO_DELAY
// #define FFP_SHOW_DEMUX_CACHE

static AVPacket flush_pkt;

// FFP_MERGE: cmp_audio_fmts
// FFP_MERGE: get_valid_channel_layout

static int packet_queue_put(PacketQueue *q, AVPacket *pkt);

static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
{
    MyAVPacketList *pkt1;

    if (q->abort_request)
       return -1;

    pkt1 = av_malloc(sizeof(MyAVPacketList));
    if (!pkt1)
        return -1;
    pkt1->pkt = *pkt;
    pkt1->next = NULL;
    if (pkt == &flush_pkt)
        q->serial++;
    pkt1->serial = q->serial;

    if (!q->last_pkt)
        q->first_pkt = pkt1;
    else
        q->last_pkt->next = pkt1;
    q->last_pkt = pkt1;
    q->nb_packets++;
    q->size += pkt1->pkt.size + sizeof(*pkt1);
    if (pkt1->pkt.duration > 0)
        q->duration += pkt1->pkt.duration;
    /* XXX: should duplicate packet data in DV case */
    SDL_CondSignal(q->cond);
    return 0;
}

static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
{
    int ret;

    /* duplicate the packet */
    if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
        return -1;

    SDL_LockMutex(q->mutex);
    ret = packet_queue_put_private(q, pkt);
    SDL_UnlockMutex(q->mutex);

    if (pkt != &flush_pkt && ret < 0)
        av_free_packet(pkt);

    return ret;
}

static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
{
    AVPacket pkt1, *pkt = &pkt1;
    av_init_packet(pkt);
    pkt->data = NULL;
    pkt->size = 0;
    pkt->stream_index = stream_index;
    return packet_queue_put(q, pkt);
}

/* packet queue handling */
static void packet_queue_init(PacketQueue *q)
{
    memset(q, 0, sizeof(PacketQueue));
    q->mutex = SDL_CreateMutex();
    q->cond = SDL_CreateCond();
    q->abort_request = 1;
}

static void packet_queue_flush(PacketQueue *q)
{
    MyAVPacketList *pkt, *pkt1;

    SDL_LockMutex(q->mutex);
    for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
        pkt1 = pkt->next;
        av_free_packet(&pkt->pkt);
        av_freep(&pkt);
    }
    q->last_pkt = NULL;
    q->first_pkt = NULL;
    q->nb_packets = 0;
    q->size = 0;
    q->duration = 0;
    SDL_UnlockMutex(q->mutex);
}

static void packet_queue_destroy(PacketQueue *q)
{
    packet_queue_flush(q);
    SDL_DestroyMutex(q->mutex);
    SDL_DestroyCond(q->cond);
}

static void packet_queue_abort(PacketQueue *q)
{
    SDL_LockMutex(q->mutex);

    q->abort_request = 1;

    SDL_CondSignal(q->cond);

    SDL_UnlockMutex(q->mutex);
}

static void packet_queue_start(PacketQueue *q)
{
    SDL_LockMutex(q->mutex);
    q->abort_request = 0;
    packet_queue_put_private(q, &flush_pkt);
    SDL_UnlockMutex(q->mutex);
}

/* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
{
    MyAVPacketList *pkt1;
    int ret;

    SDL_LockMutex(q->mutex);

    for (;;) {
        if (q->abort_request) {
            ret = -1;
            break;
        }

        pkt1 = q->first_pkt;
        if (pkt1) {
            q->first_pkt = pkt1->next;
            if (!q->first_pkt)
                q->last_pkt = NULL;
            q->nb_packets--;
            q->size -= pkt1->pkt.size + sizeof(*pkt1);
            if (pkt1->pkt.duration > 0)
                q->duration -= pkt1->pkt.duration;
            *pkt = pkt1->pkt;
            if (serial)
                *serial = pkt1->serial;
            av_free(pkt1);
            ret = 1;
            break;
        } else if (!block) {
            ret = 0;
            break;
        } else {
            SDL_CondWait(q->cond, q->mutex);
        }
    }
    SDL_UnlockMutex(q->mutex);
    return ret;
}

static int packet_queue_get_or_buffering(FFPlayer *ffp, PacketQueue *q, AVPacket *pkt, int *serial, int finished)
{
    while (1) {
        int new_packet = packet_queue_get(q, pkt, 0, serial);
        if (new_packet < 0)
            return -1;
        else if (new_packet == 0) {
            if (!finished)
                ffp_toggle_buffering(ffp, 1);
            new_packet = packet_queue_get(q, pkt, 1, serial);
            if (new_packet < 0)
                return -1;
        }

        if (finished)
            continue;
        else
            break;
    }

    return 1;
}

// FFP_MERGE: fill_rectangle
// FFP_MERGE: fill_border
// FFP_MERGE: ALPHA_BLEND
// FFP_MERGE: RGBA_IN
// FFP_MERGE: YUVA_IN
// FFP_MERGE: YUVA_OUT
// FFP_MERGE: BPP
// FFP_MERGE: blend_subrect

static void free_picture(VideoPicture *vp)
{
    if (vp->bmp) {
        SDL_VoutFreeYUVOverlay(vp->bmp);
        vp->bmp = NULL;
    }
}

// FFP_MERGE: free_subpicture
// FFP_MERGE: calculate_display_rect
// FFP_MERGE: video_image_display

#ifdef FFP_SHOW_FPS
static int g_fps_counter = 0;
static int64_t g_fps_total_time = 0;
#endif
static void video_image_display2(FFPlayer *ffp)
{
    VideoState *is = ffp->is;
    VideoPicture *vp;

    vp = &is->pictq[is->pictq_rindex];
    if (vp->bmp) {
#ifdef FFP_SHOW_FPS
        int64_t start = SDL_GetTickHR();
#endif
        SDL_VoutDisplayYUVOverlay(ffp->vout, vp->bmp);
#ifdef FFP_SHOW_FPS
        int64_t dur = SDL_GetTickHR() - start;
        g_fps_total_time += dur;
        g_fps_counter++;
        int64_t avg_frame_time = g_fps_total_time / g_fps_counter;
        double fps = 1.0f / avg_frame_time * 1000;
        ALOGE("fps:  [%f][%d] %"PRId64" ms/frame, fps=%f, +%"PRId64"\n",
            vp->pts, g_fps_counter, (int64_t)avg_frame_time, fps, dur);
#endif
    }
}

// FFP_MERGE: compute_mod
// FFP_MERGE: video_audio_display

static void stream_close(FFPlayer *ffp)
{
    VideoState *is = ffp->is;
    int i;
    /* XXX: use a special url_shutdown call to abort parse cleanly */
    is->abort_request = 1;
    packet_queue_abort(&is->videoq);
    packet_queue_abort(&is->audioq);
    ALOGW("wait for read_tid\n");
    SDL_WaitThread(is->read_tid, NULL);
    ALOGW("wait for video_refresh_tid\n");
    SDL_WaitThread(is->video_refresh_tid, NULL);

    packet_queue_destroy(&is->videoq);
    packet_queue_destroy(&is->audioq);
#ifdef FFP_MERGE
    packet_queue_destroy(&is->subtitleq);
#endif

    /* free all pictures */
    for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
        free_picture(&is->pictq[i]);
#ifdef FFP_MERGE
    for (i = 0; i < SUBPICTURE_QUEUE_SIZE; i++)
        free_subpicture(&is->subpq[i]);
#endif
    SDL_DestroyMutex(is->pictq_mutex);
    SDL_DestroyCond(is->pictq_cond);
#ifdef FFP_MERGE
    SDL_DestroyMutex(is->subpq_mutex);
    SDL_DestroyCond(is->subpq_cond);
#endif
    SDL_DestroyCond(is->continue_read_thread);
    SDL_DestroyMutex(is->play_mutex);
#if !CONFIG_AVFILTER
    sws_freeContext(is->img_convert_ctx);
#endif
    av_free(is);
}

// FFP_MERGE: do_exit
// FFP_MERGE: sigterm_handler
// FFP_MERGE: video_open
// FFP_MERGE: video_display

/* display the current picture, if any */
static void video_display2(FFPlayer *ffp)
{
    VideoState *is = ffp->is;
    if (is->video_st)
        video_image_display2(ffp);
}

static double get_clock(Clock *c)
{
    if (*c->queue_serial != c->serial)
        return NAN;
    if (c->paused) {
        return c->pts;
    } else {
        double time = av_gettime() / 1000000.0;
        return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
    }
}

static void set_clock_at(Clock *c, double pts, int serial, double time)
{
    c->pts = pts;
    c->last_updated = time;
    c->pts_drift = c->pts - time;
    c->serial = serial;
}

static void set_clock(Clock *c, double pts, int serial)
{
    double time = av_gettime() / 1000000.0;
    set_clock_at(c, pts, serial, time);
}

static void set_clock_speed(Clock *c, double speed)
{
    set_clock(c, get_clock(c), c->serial);
    c->speed = speed;
}

static void init_clock(Clock *c, int *queue_serial)
{
    c->speed = 1.0;
    c->paused = 0;
    c->queue_serial = queue_serial;
    set_clock(c, NAN, -1);
}

static void sync_clock_to_slave(Clock *c, Clock *slave)
{
    double clock = get_clock(c);
    double slave_clock = get_clock(slave);
    if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
        set_clock(c, slave_clock, slave->serial);
}

static int get_master_sync_type(VideoState *is) {
    if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
        if (is->video_st)
            return AV_SYNC_VIDEO_MASTER;
        else
            return AV_SYNC_AUDIO_MASTER;
    } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
        if (is->audio_st)
            return AV_SYNC_AUDIO_MASTER;
        else
            return AV_SYNC_EXTERNAL_CLOCK;
    } else {
        return AV_SYNC_EXTERNAL_CLOCK;
    }
}

/* get the current master clock value */
static double get_master_clock(VideoState *is)
{
    double val;

    switch (get_master_sync_type(is)) {
        case AV_SYNC_VIDEO_MASTER:
            val = get_clock(&is->vidclk);
            break;
        case AV_SYNC_AUDIO_MASTER:
            val = get_clock(&is->audclk);
            break;
        default:
            val = get_clock(&is->extclk);
            break;
    }
    return val;
}

static void check_external_clock_speed(VideoState *is) {
   if ((is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2) ||
       (is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2)) {
       set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
   } else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
              (is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
       set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
   } else {
       double speed = is->extclk.speed;
       if (speed != 1.0)
           set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
   }
}

/* seek in the stream */
static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
{
    if (!is->seek_req) {
        is->seek_pos = pos;
        is->seek_rel = rel;
        is->seek_flags &= ~AVSEEK_FLAG_BYTE;
        if (seek_by_bytes)
            is->seek_flags |= AVSEEK_FLAG_BYTE;
        is->seek_req = 1;
        SDL_CondSignal(is->continue_read_thread);
    }
}

/* pause or resume the video */
static void stream_toggle_pause_l(FFPlayer *ffp, int pause_on)
{
    VideoState *is = ffp->is;
    if (is->paused && !pause_on) {
        is->frame_timer += av_gettime() / 1000000.0 + is->vidclk.pts_drift - is->vidclk.pts;

#ifdef FFP_MERGE
        if (is->read_pause_return != AVERROR(ENOSYS)) {
            is->vidclk.paused = 0;
        }
#endif
        set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
        // ALOGE("stream_toggle_pause_l: pause -> start\n");
    } else {
        // ALOGE("stream_toggle_pause_l: %d\n", pause_on);
    }
    set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
    is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = pause_on;

    SDL_AoutPauseAudio(ffp->aout, pause_on);
}

static void stream_update_pause_l(FFPlayer *ffp)
{
    VideoState *is = ffp->is;
    // ALOGE("stream_update_pause_l: (!%d && (%d || %d)\n", is->step, is->pause_req, is->buffering_on);
    if (!is->step && (is->pause_req || is->buffering_on)) {
        // ALOGE("stream_update_pause_l: 1\n");
        stream_toggle_pause_l(ffp, 1);
    } else {
        // ALOGE("stream_update_pause_l: 0\n");
        stream_toggle_pause_l(ffp, 0);
    }
}

static void toggle_pause_l(FFPlayer *ffp, int pause_on)
{
    // ALOGE("toggle_pause_l\n");
    VideoState *is = ffp->is;
    is->pause_req = pause_on;
    ffp->auto_start = !pause_on;
    stream_update_pause_l(ffp);
    is->step = 0;
}

static void toggle_pause(FFPlayer *ffp, int pause_on)
{
    SDL_LockMutex(ffp->is->play_mutex);
    toggle_pause_l(ffp, pause_on);
    SDL_UnlockMutex(ffp->is->play_mutex);
}

static void step_to_next_frame_l(FFPlayer *ffp)
{
    VideoState *is = ffp->is;
    /* if the stream is paused unpause it, then step */
    // ALOGE("step_to_next_frame\n");
    if (is->paused)
        stream_toggle_pause_l(ffp, 0);
    is->step = 1;
}

static double compute_target_delay(double delay, VideoState *is)
{
    double sync_threshold, diff = 0.0f;

    /* update delay to follow master synchronisation source */
    if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
        /* if video is slave, we try to correct big delays by
           duplicating or deleting a frame */
        diff = get_clock(&is->vidclk) - get_master_clock(is);

        /* skip or repeat frame. We take into account the
           delay to compute the threshold. I still don't know
           if it is the best guess */
        sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
        if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
            if (diff <= -sync_threshold)
                delay = FFMAX(0, delay + diff);
            else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
                delay = delay + diff;
            else if (diff >= sync_threshold)
                delay = 2 * delay;
        }
    }

    av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
            delay, -diff);

    return delay;
}

static void pictq_next_picture(VideoState *is) {
    /* update queue size and signal for next picture */
    if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
        is->pictq_rindex = 0;

    SDL_LockMutex(is->pictq_mutex);
    is->pictq_size--;
    SDL_CondSignal(is->pictq_cond);
    SDL_UnlockMutex(is->pictq_mutex);
}

static int pictq_prev_picture(VideoState *is) {
    VideoPicture *prevvp;
    int ret = 0;
    /* update queue size and signal for the previous picture */
    prevvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
    if (prevvp->allocated && prevvp->serial == is->videoq.serial) {
        SDL_LockMutex(is->pictq_mutex);
        if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE) {
            if (--is->pictq_rindex == -1)
                is->pictq_rindex = VIDEO_PICTURE_QUEUE_SIZE - 1;
            is->pictq_size++;
            ret = 1;
        }
        SDL_CondSignal(is->pictq_cond);
        SDL_UnlockMutex(is->pictq_mutex);
    }
    return ret;
}

static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
    /* update current video pts */
    set_clock(&is->vidclk, pts, serial);
    sync_clock_to_slave(&is->extclk, &is->vidclk);
    is->video_current_pos = pos;
    is->frame_last_pts = pts;
}

/* called to display each frame */
static void video_refresh(FFPlayer *opaque, double *remaining_time)
{
    FFPlayer *ffp = opaque;
    VideoState *is = ffp->is;
    VideoPicture *vp;
    double time;

#ifdef FFP_MERGE
    SubPicture *sp, *sp2;
#endif

    if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
        check_external_clock_speed(is);

    if (!ffp->display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
        time = av_gettime() / 1000000.0;
        if (is->force_refresh || is->last_vis_time + ffp->rdftspeed < time) {
            video_display2(ffp);
            is->last_vis_time = time;
        }
        /*
        ALOGE("remaining[1] %.3f = FFMIN(%.3f, %.3f + %.3f - %.3f)\n",
              *remaining_time,
              is->last_vis_time,
              ffp->rdftspeed,
              time);
        */
        *remaining_time = FFMIN(*remaining_time, is->last_vis_time + ffp->rdftspeed - time);
    }

    if (is->video_st) {
        int redisplay = 0;
        if (is->force_refresh)
            redisplay = pictq_prev_picture(is);
retry:
        if (is->pictq_size == 0) {
            SDL_LockMutex(is->pictq_mutex);
            if (is->frame_last_dropped_pts != AV_NOPTS_VALUE && is->frame_last_dropped_pts > is->frame_last_pts) {
                update_video_pts(is, is->frame_last_dropped_pts, is->frame_last_dropped_pos, is->frame_last_dropped_serial);
                is->frame_last_dropped_pts = AV_NOPTS_VALUE;
            }
            SDL_UnlockMutex(is->pictq_mutex);
            // nothing to do, no picture to display in the queue
        } else {
            double last_duration, duration, delay;
            /* dequeue the picture */
            vp = &is->pictq[is->pictq_rindex];

            if (vp->serial != is->videoq.serial) {
                pictq_next_picture(is);
                redisplay = 0;
                goto retry;
            }

            if (is->paused)
                goto display;

            /* compute nominal last_duration */
            last_duration = vp->pts - is->frame_last_pts;
            if (!isnan(last_duration) && last_duration > 0 && last_duration < is->max_frame_duration) {
                /* if duration of the last frame was sane, update last_duration in video state */
                is->frame_last_duration = last_duration;
            }
            if (redisplay)
                delay = 0.0;
            else
                delay = compute_target_delay(is->frame_last_duration, is);

            time= av_gettime()/1000000.0;
            if (isnan(is->frame_timer) || time < is->frame_timer)
                is->frame_timer = time;
            if (time < is->frame_timer + delay && !redisplay) {
                *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
                return;
            }

            is->frame_timer += delay;
            if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
                is->frame_timer = time;

            SDL_LockMutex(is->pictq_mutex);
            if (!redisplay && !isnan(vp->pts))
                update_video_pts(is, vp->pts, vp->pos, vp->serial);
            SDL_UnlockMutex(is->pictq_mutex);

            if (is->pictq_size > 1) {
                VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
                duration = nextvp->pts - vp->pts;
                if(!is->step && (redisplay || ffp->framedrop > 0 || (ffp->framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration) {
                    if (!redisplay)
                        is->frame_drops_late++;
                    pictq_next_picture(is);
                    redisplay = 0;
                    goto retry;
                }
            }

            // FFP_MERGE: if (is->subtitle_st) { {...}

display:
            /* display picture */
            if (!ffp->display_disable && is->show_mode == SHOW_MODE_VIDEO)
                video_display2(ffp);

            pictq_next_picture(is);

            SDL_LockMutex(ffp->is->play_mutex);
            if (is->step) {
                is->step = 0;
                if (!is->paused)
                    stream_update_pause_l(ffp);
            }
            SDL_UnlockMutex(ffp->is->play_mutex);
        }
    }
    is->force_refresh = 0;
    if (ffp->show_status) {
        static int64_t last_time;
        int64_t cur_time;
        int aqsize, vqsize, sqsize;
        double av_diff;

        cur_time = av_gettime();
        if (!last_time || (cur_time - last_time) >= 30000) {
            aqsize = 0;
            vqsize = 0;
            sqsize = 0;
            if (is->audio_st)
                aqsize = is->audioq.size;
            if (is->video_st)
                vqsize = is->videoq.size;
#ifdef FFP_MERGE
            if (is->subtitle_st)
                sqsize = is->subtitleq.size;
#else
            sqsize = 0;
#endif
            av_diff = 0;
            if (is->audio_st && is->video_st)
                av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
            else if (is->video_st)
                av_diff = get_master_clock(is) - get_clock(&is->vidclk);
            else if (is->audio_st)
                av_diff = get_master_clock(is) - get_clock(&is->audclk);
            av_log(NULL, AV_LOG_INFO,
                   "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
                   get_master_clock(is),
                   (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
                   av_diff,
                   is->frame_drops_early + is->frame_drops_late,
                   aqsize / 1024,
                   vqsize / 1024,
                   sqsize,
                   is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
                   is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
            fflush(stdout);
            last_time = cur_time;
        }
    }
}

// TODO: 9 alloc_picture in video_refresh_thread if overlay referenced by vout
/* allocate a picture (needs to do that in main thread to avoid
   potential locking problems */
static void alloc_picture(FFPlayer *ffp)
{
    VideoState *is = ffp->is;
    VideoPicture *vp;
#ifdef FFP_MERGE
    int64_t bufferdiff;
#endif

    vp = &is->pictq[is->pictq_windex];

    free_picture(vp);

#ifdef FFP_MERGE
    video_open(ffp, 0, vp);
#endif

    vp->bmp = SDL_Vout_CreateOverlay(vp->width, vp->height,
                                   ffp->overlay_format,
                                   ffp->vout);
#ifdef FFP_MERGE
    bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
    if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
#else
    /* RV16, RV32 contains only one plane */
    if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
#endif
        /* SDL allocates a buffer smaller than requested if the video
         * overlay hardware is unable to support the requested size. */
        av_log(NULL, AV_LOG_FATAL,
               "Error: the video system does not support an image\n"
                        "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
                        "to reduce the image size.\n", vp->width, vp->height );
        free_picture(vp);
    }

    SDL_LockMutex(is->pictq_mutex);
    vp->allocated = 1;
    SDL_CondSignal(is->pictq_cond);
    SDL_UnlockMutex(is->pictq_mutex);
}

#ifdef FFP_MERGE
static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
    int i, width, height;
    Uint8 *p, *maxp;
    for (i = 0; i < 3; i++) {
        width  = bmp->w;
        height = bmp->h;
        if (i > 0) {
            width  >>= 1;
            height >>= 1;
        }
        if (bmp->pitches[i] > width) {
            maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
            for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
                *(p+1) = *p;
        }
    }
}
#endif

static int queue_picture(FFPlayer *ffp, AVFrame *src_frame, double pts, int64_t pos, int serial)
{
    VideoState *is = ffp->is;
    VideoPicture *vp;

#if defined(DEBUG_SYNC) && 0
    printf("frame_type=%c pts=%0.3f\n",
           av_get_picture_type_char(src_frame->pict_type), pts);
#endif

    /* wait until we have space to put a new picture */
    SDL_LockMutex(is->pictq_mutex);

    /* keep the last already displayed picture in the queue */
    while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 1 &&
           !is->videoq.abort_request) {
        SDL_CondWait(is->pictq_cond, is->pictq_mutex);
    }
    SDL_UnlockMutex(is->pictq_mutex);

    if (is->videoq.abort_request)
        return -1;

    vp = &is->pictq[is->pictq_windex];

    vp->sar = src_frame->sample_aspect_ratio;

    /* alloc or resize hardware picture buffer */
    if (!vp->bmp || vp->reallocate || !vp->allocated ||
        vp->width  != src_frame->width ||
        vp->height != src_frame->height) {

        if (vp->width != src_frame->width || vp->height != src_frame->height)
            ffp_notify_msg3(ffp, FFP_MSG_VIDEO_SIZE_CHANGED, src_frame->width, src_frame->height);

        vp->allocated  = 0;
        vp->reallocate = 0;
        vp->width = src_frame->width;
        vp->height = src_frame->height;

        /* the allocation must be done in the main thread to avoid
           locking problems. */
        alloc_picture(ffp);

        if (is->videoq.abort_request)
            return -1;
    }

    /* if the frame is not skipped, then display it */
    if (vp->bmp) {
        /* get a pointer on the bitmap */
        SDL_VoutLockYUVOverlay(vp->bmp);

        if (SDL_VoutFFmpeg_ConvertFrame(vp->bmp, src_frame,
            &is->img_convert_ctx, ffp->sws_flags) < 0) {
            av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
            exit(1);
        }
        /* update the bitmap content */
        SDL_VoutUnlockYUVOverlay(vp->bmp);

        vp->pts = pts;
        vp->pos = pos;
        vp->serial = serial;

        /* now we can update the picture count */
        if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
            is->pictq_windex = 0;
        SDL_LockMutex(is->pictq_mutex);
        is->pictq_size++;
        SDL_UnlockMutex(is->pictq_mutex);
    }
    return 0;
}

#ifdef FFP_SHOW_VDPS
static int g_vdps_counter = 0;
static int64_t g_vdps_total_time = 0;
#endif
static int get_video_frame(FFPlayer *ffp, AVFrame *frame, AVPacket *pkt, int *serial)
{
    VideoState *is = ffp->is;
    int got_picture;

    if (packet_queue_get_or_buffering(ffp, &is->videoq, pkt, serial, is->video_finished) < 0)
        return -1;

    if (pkt->data == flush_pkt.data) {
        avcodec_flush_buffers(is->video_st->codec);

        SDL_LockMutex(is->pictq_mutex);
        // Make sure there are no long delay timers (ideally we should just flush the queue but that's harder)
        while (is->pictq_size && !is->videoq.abort_request) {
            SDL_CondWait(is->pictq_cond, is->pictq_mutex);
        }
        is->video_current_pos = -1;
        is->frame_last_pts = AV_NOPTS_VALUE;
        is->frame_last_duration = 0;
        is->frame_timer = (double)av_gettime() / 1000000.0;
        is->frame_last_dropped_pts = AV_NOPTS_VALUE;
        SDL_UnlockMutex(is->pictq_mutex);
        return 0;
    }

    if (is->dropping_frame) {
        if (pkt->flags & AV_PKT_FLAG_KEY) {
            ALOGW("skip frame(fast): end\n");
            is->dropping_frame = 0;
            is->video_st->codec->skip_frame = ffp->skip_frame;
            avcodec_flush_buffers(is->video_st->codec);
        } else {
            return 0;
        }
    }

    if (is->frame_drops_early > 12) {
        ALOGW("skip frame: start\n");
        is->dropping_frame = 1;
        is->frame_drops_early = 0;
        is->video_st->codec->skip_frame = AVDISCARD_NONKEY;
        avcodec_flush_buffers(is->video_st->codec);
        return 0;
    }

#ifdef FFP_SHOW_VDPS
        int64_t start = SDL_GetTickHR();
#endif
    if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
        return 0;
#ifdef FFP_SHOW_VDPS
        int64_t dur = SDL_GetTickHR() - start;
        g_vdps_total_time += dur;
        g_vdps_counter++;
        int64_t avg_frame_time = g_vdps_total_time / g_vdps_counter;
        double fps = 1.0f / avg_frame_time * 1000;
        ALOGE("vdps: [%f][%d] %"PRId64" ms/frame, vdps=%f, +%"PRId64"\n",
            frame->pts, g_vdps_counter, (int64_t)avg_frame_time, fps, dur);
#endif

    if (!got_picture && !pkt->data) {
        ALOGE("video_finished");
        is->video_finished = *serial;
    }

    if (got_picture) {
        int ret = 1;
        double dpts = NAN;

        if (ffp->decoder_reorder_pts == -1) {
            frame->pts = av_frame_get_best_effort_timestamp(frame);
        } else if (ffp->decoder_reorder_pts) {
            frame->pts = frame->pkt_pts;
        } else {
            frame->pts = frame->pkt_dts;
        }

        if (frame->pts != AV_NOPTS_VALUE)
            dpts = av_q2d(is->video_st->time_base) * frame->pts;

        frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);

        if (ffp->framedrop > 0 || (ffp->framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
            SDL_LockMutex(is->pictq_mutex);
            if (is->frame_last_pts != AV_NOPTS_VALUE && frame->pts != AV_NOPTS_VALUE) {
                double clockdiff = get_clock(&is->vidclk) - get_master_clock(is);
                double ptsdiff = dpts - is->frame_last_pts;
                if (!isnan(clockdiff) && fabs(clockdiff) < AV_NOSYNC_THRESHOLD &&
                    !isnan(ptsdiff) && ptsdiff > 0 && ptsdiff < AV_NOSYNC_THRESHOLD &&
                    clockdiff + ptsdiff - is->frame_last_filter_delay < 0 &&
                    is->videoq.nb_packets) {
                    is->frame_last_dropped_pos = av_frame_get_pkt_pos(frame);
                    is->frame_last_dropped_pts = dpts;
                    is->frame_last_dropped_serial = *serial;
                    is->frame_drops_early++;
                    av_frame_unref(frame);
                    ret = 0;
                }
            }
            SDL_UnlockMutex(is->pictq_mutex);
        }

        return ret;
    }
    return 0;
}

#if CONFIG_AVFILTER
static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
                                 AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
{
    int ret;
    AVFilterInOut *outputs = NULL, *inputs = NULL;

    if (filtergraph) {
        outputs = avfilter_inout_alloc();
        inputs  = avfilter_inout_alloc();
        if (!outputs || !inputs) {
            ret = AVERROR(ENOMEM);
            goto fail;
        }

        outputs->name       = av_strdup("in");
        outputs->filter_ctx = source_ctx;
        outputs->pad_idx    = 0;
        outputs->next       = NULL;

        inputs->name        = av_strdup("out");
        inputs->filter_ctx  = sink_ctx;
        inputs->pad_idx     = 0;
        inputs->next        = NULL;

        if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
            goto fail;
    } else {
        if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
            goto fail;
    }

    ret = avfilter_graph_config(graph, NULL);
fail:
    avfilter_inout_free(&outputs);
    avfilter_inout_free(&inputs);
    return ret;
}

static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
{
    static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
    char sws_flags_str[128];
    char buffersrc_args[256];
    int ret;
    AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_crop;
    AVCodecContext *codec = is->video_st->codec;
    AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);

    av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
    snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
    graph->scale_sws_opts = av_strdup(sws_flags_str);

    snprintf(buffersrc_args, sizeof(buffersrc_args),
             "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
             frame->width, frame->height, frame->format,
             is->video_st->time_base.num, is->video_st->time_base.den,
             codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
    if (fr.num && fr.den)
        av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);

    if ((ret = avfilter_graph_create_filter(&filt_src,
                                            avfilter_get_by_name("buffer"),
                                            "ffplay_buffer", buffersrc_args, NULL,
                                            graph)) < 0)
        goto fail;

    ret = avfilter_graph_create_filter(&filt_out,
                                       avfilter_get_by_name("buffersink"),
                                       "ffplay_buffersink", NULL, NULL, graph);
    if (ret < 0)
        goto fail;

    if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
        goto fail;

    /* SDL YUV code is not handling odd width/height for some driver
     * combinations, therefore we crop the picture to an even width/height. */
    if ((ret = avfilter_graph_create_filter(&filt_crop,
                                            avfilter_get_by_name("crop"),
                                            "ffplay_crop", "floor(in_w/2)*2:floor(in_h/2)*2", NULL, graph)) < 0)
        goto fail;
    if ((ret = avfilter_link(filt_crop, 0, filt_out, 0)) < 0)
        goto fail;

    if ((ret = configure_filtergraph(graph, vfilters, filt_src, filt_crop)) < 0)
        goto fail;

    is->in_video_filter  = filt_src;
    is->out_video_filter = filt_out;

fail:
    return ret;
}

static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
{
    static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
    int sample_rates[2] = { 0, -1 };
    int64_t channel_layouts[2] = { 0, -1 };
    int channels[2] = { 0, -1 };
    AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
    char aresample_swr_opts[512] = "";
    AVDictionaryEntry *e = NULL;
    char asrc_args[256];
    int ret;

    avfilter_graph_free(&is->agraph);
    if (!(is->agraph = avfilter_graph_alloc()))
        return AVERROR(ENOMEM);

    while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
        av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
    if (strlen(aresample_swr_opts))
        aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
    av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);

    ret = snprintf(asrc_args, sizeof(asrc_args),
                   "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
                   is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
                   is->audio_filter_src.channels,
                   1, is->audio_filter_src.freq);
    if (is->audio_filter_src.channel_layout)
        snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
                 ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);

    ret = avfilter_graph_create_filter(&filt_asrc,
                                       avfilter_get_by_name("abuffer"), "ffplay_abuffer",
                                       asrc_args, NULL, is->agraph);
    if (ret < 0)
        goto end;


    ret = avfilter_graph_create_filter(&filt_asink,
                                       avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
                                       NULL, NULL, is->agraph);
    if (ret < 0)
        goto end;

    if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
        goto end;
    if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
        goto end;

    if (force_output_format) {
        channel_layouts[0] = is->audio_tgt.channel_layout;
        channels       [0] = is->audio_tgt.channels;
        sample_rates   [0] = is->audio_tgt.freq;
        if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
            goto end;
        if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
            goto end;
        if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
            goto end;
        if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
            goto end;
    }


    if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
        goto end;

    is->in_audio_filter  = filt_asrc;
    is->out_audio_filter = filt_asink;

end:
    if (ret < 0)
        avfilter_graph_free(&is->agraph);
    return ret;
}
#endif  /* CONFIG_AVFILTER */

static int video_thread(void *arg)
{
    AVPacket pkt = { 0 };
    FFPlayer *ffp = arg;
    VideoState *is = ffp->is;
    AVFrame *frame = av_frame_alloc();
    double pts;
    int ret;
    int serial = 0;

#if CONFIG_AVFILTER
    AVFilterGraph *graph = avfilter_graph_alloc();
    AVFilterContext *filt_out = NULL, *filt_in = NULL;
    int last_w = 0;
    int last_h = 0;
    enum AVPixelFormat last_format = -2;
    int last_serial = -1;
#endif

    for (;;) {
        while (is->paused && !is->videoq.abort_request)
            SDL_Delay(10);

        avcodec_get_frame_defaults(frame);
        av_free_packet(&pkt);

        ret = get_video_frame(ffp, frame, &pkt, &serial);
        if (ret < 0)
            goto the_end;
        if (!ret)
            continue;

#if CONFIG_AVFILTER
        if (   last_w != frame->width
            || last_h != frame->height
            || last_format != frame->format
            || last_serial != serial) {
            av_log(NULL, AV_LOG_DEBUG,
                   "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
                   last_w, last_h,
                   (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
                   frame->width, frame->height,
                   (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), serial);
            avfilter_graph_free(&graph);
            graph = avfilter_graph_alloc();
            if ((ret = configure_video_filters(graph, is, vfilters, frame)) < 0) {
                SDL_Event event;
                event.type = FF_QUIT_EVENT;
                event.user.data1 = is;
                SDL_PushEvent(&event);
                av_free_packet(&pkt);
                goto the_end;
            }
            filt_in  = is->in_video_filter;
            filt_out = is->out_video_filter;
            last_w = frame->width;
            last_h = frame->height;
            last_format = frame->format;
            last_serial = serial;
        }

        ret = av_buffersrc_add_frame(filt_in, frame);
        if (ret < 0)
            goto the_end;
        av_frame_unref(frame);
        avcodec_get_frame_defaults(frame);
        av_free_packet(&pkt);

        while (ret >= 0) {
            is->frame_last_returned_time = av_gettime() / 1000000.0;

            ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
            if (ret < 0) {
                if (ret == AVERROR_EOF)
                    is->video_finished = serial;
                ret = 0;
                break;
            }

            is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
            if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
                is->frame_last_filter_delay = 0;

            pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(filt_out->inputs[0]->time_base);
            ret = queue_picture(is, frame, pts, av_frame_get_pkt_pos(frame), serial);
            av_frame_unref(frame);
        }
#else
        pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(is->video_st->time_base);
        ret = queue_picture(ffp, frame, pts, av_frame_get_pkt_pos(frame), serial);
        av_frame_unref(frame);
#endif

        if (ret < 0)
            goto the_end;
    }
 the_end:
    avcodec_flush_buffers(is->video_st->codec);
#if CONFIG_AVFILTER
    avfilter_graph_free(&graph);
#endif
    av_free_packet(&pkt);
    av_frame_free(&frame);
    return 0;
}

// FFP_MERGE: subtitle_thread

/* copy samples for viewing in editor window */
static void update_sample_display(VideoState *is, short *samples, int samples_size)
{
    int size, len;

    size = samples_size / sizeof(short);
    while (size > 0) {
        len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
        if (len > size)
            len = size;
        memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
        samples += len;
        is->sample_array_index += len;
        if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
            is->sample_array_index = 0;
        size -= len;
    }
}

/* return the wanted number of samples to get better sync if sync_type is video
 * or external master clock */
static int synchronize_audio(VideoState *is, int nb_samples)
{
    int wanted_nb_samples = nb_samples;

    /* if not master, then we try to remove or add samples to correct the clock */
    if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
        double diff, avg_diff;
        int min_nb_samples, max_nb_samples;

        diff = get_clock(&is->audclk) - get_master_clock(is);

        if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
            is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
            if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
                /* not enough measures to have a correct estimate */
                is->audio_diff_avg_count++;
            } else {
                /* estimate the A-V difference */
                avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);

                if (fabs(avg_diff) >= is->audio_diff_threshold) {
                    wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
                    min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
                    max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
                    wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
                }
                av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
                        diff, avg_diff, wanted_nb_samples - nb_samples,
                        is->audio_clock, is->audio_diff_threshold);
            }
        } else {
            /* too big difference : may be initial PTS errors, so
               reset A-V filter */
            is->audio_diff_avg_count = 0;
            is->audio_diff_cum       = 0;
        }
    }

    return wanted_nb_samples;
}

/**
 * Decode one audio frame and return its uncompressed size.
 *
 * The processed audio frame is decoded, converted if required, and
 * stored in is->audio_buf, with size in bytes given by the return
 * value.
 */
static int audio_decode_frame(FFPlayer *ffp)
{
    VideoState *is = ffp->is;
    AVPacket *pkt_temp = &is->audio_pkt_temp;
    AVPacket *pkt = &is->audio_pkt;
    AVCodecContext *dec = is->audio_st->codec;
    int len1, data_size, resampled_data_size;
    int64_t dec_channel_layout;
    int got_frame;
    av_unused double audio_clock0;
    int wanted_nb_samples;
    AVRational tb;
#if CONFIG_AVFILTER
    int ret;
    int reconfigure;
#endif

    for (;;) {
        /* NOTE: the audio packet can contain several frames */
        while (pkt_temp->stream_index != -1 || is->audio_buf_frames_pending) {
            if (!is->frame) {
                if (!(is->frame = avcodec_alloc_frame()))
                    return AVERROR(ENOMEM);
            } else {
                av_frame_unref(is->frame);
                avcodec_get_frame_defaults(is->frame);
            }

            if (is->audioq.serial != is->audio_pkt_temp_serial)
                break;

            if (is->paused)
                return -1;

            if (!is->audio_buf_frames_pending) {
                len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
                if (len1 < 0) {
                    /* if error, we skip the frame */
                    pkt_temp->size = 0;
                    break;
                }

                pkt_temp->dts =
                pkt_temp->pts = AV_NOPTS_VALUE;
                pkt_temp->data += len1;
                pkt_temp->size -= len1;
                if ((pkt_temp->data && pkt_temp->size <= 0) || (!pkt_temp->data && !got_frame))
                    pkt_temp->stream_index = -1;
                if (!pkt_temp->data && !got_frame) {
                    ALOGE("audio_finished");
                    is->audio_finished = is->audio_pkt_temp_serial;
                }

                if (!got_frame)
                    continue;

                tb = (AVRational){1, is->frame->sample_rate};
                if (is->frame->pts != AV_NOPTS_VALUE)
                    is->frame->pts = av_rescale_q(is->frame->pts, dec->time_base, tb);
                else if (is->frame->pkt_pts != AV_NOPTS_VALUE)
                    is->frame->pts = av_rescale_q(is->frame->pkt_pts, is->audio_st->time_base, tb);
                else if (is->audio_frame_next_pts != AV_NOPTS_VALUE)
#if CONFIG_AVFILTER
                    is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_filter_src.freq}, tb);
#else
                    is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_src.freq}, tb);
#endif

                if (is->frame->pts != AV_NOPTS_VALUE)
                    is->audio_frame_next_pts = is->frame->pts + is->frame->nb_samples;

#if CONFIG_AVFILTER
                dec_channel_layout = get_valid_channel_layout(is->frame->channel_layout, av_frame_get_channels(is->frame));

                reconfigure =
                    cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
                                   is->frame->format, av_frame_get_channels(is->frame))    ||
                    is->audio_filter_src.channel_layout != dec_channel_layout ||
                    is->audio_filter_src.freq           != is->frame->sample_rate ||
                    is->audio_pkt_temp_serial           != is->audio_last_serial;

                if (reconfigure) {
                    char buf1[1024], buf2[1024];
                    av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
                    av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
                    av_log(NULL, AV_LOG_DEBUG,
                           "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
                           is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, is->audio_last_serial,
                           is->frame->sample_rate, av_frame_get_channels(is->frame), av_get_sample_fmt_name(is->frame->format), buf2, is->audio_pkt_temp_serial);

                    is->audio_filter_src.fmt            = is->frame->format;
                    is->audio_filter_src.channels       = av_frame_get_channels(is->frame);
                    is->audio_filter_src.channel_layout = dec_channel_layout;
                    is->audio_filter_src.freq           = is->frame->sample_rate;
                    is->audio_last_serial               = is->audio_pkt_temp_serial;

                    if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
                        return ret;
                }

                if ((ret = av_buffersrc_add_frame(is->in_audio_filter, is->frame)) < 0)
                    return ret;
                av_frame_unref(is->frame);
#endif
            }
#if CONFIG_AVFILTER
            if ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, is->frame, 0)) < 0) {
                if (ret == AVERROR(EAGAIN)) {
                    is->audio_buf_frames_pending = 0;
                    continue;
                }
                if (ret == AVERROR_EOF)
                    is->audio_finished = is->audio_pkt_temp_serial;
                return ret;
            }
            is->audio_buf_frames_pending = 1;
            tb = is->out_audio_filter->inputs[0]->time_base;
#endif

            data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(is->frame),
                                                   is->frame->nb_samples,
                                                   is->frame->format, 1);

            dec_channel_layout =
                (is->frame->channel_layout && av_frame_get_channels(is->frame) == av_get_channel_layout_nb_channels(is->frame->channel_layout)) ?
                is->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(is->frame));
            wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);

            if (is->frame->format        != is->audio_src.fmt            ||
                dec_channel_layout       != is->audio_src.channel_layout ||
                is->frame->sample_rate   != is->audio_src.freq           ||
                (wanted_nb_samples       != is->frame->nb_samples && !is->swr_ctx)) {
                swr_free(&is->swr_ctx);
                is->swr_ctx = swr_alloc_set_opts(NULL,
                                                 is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
                                                 dec_channel_layout,           is->frame->format, is->frame->sample_rate,
                                                 0, NULL);
                if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
                    av_log(NULL, AV_LOG_ERROR,
                           "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
                            is->frame->sample_rate, av_get_sample_fmt_name(is->frame->format), av_frame_get_channels(is->frame),
                            is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
                    break;
                }
                is->audio_src.channel_layout = dec_channel_layout;
                is->audio_src.channels       = av_frame_get_channels(is->frame);
                is->audio_src.freq = is->frame->sample_rate;
                is->audio_src.fmt = is->frame->format;
            }

            if (is->swr_ctx) {
                const uint8_t **in = (const uint8_t **)is->frame->extended_data;
                uint8_t **out = &is->audio_buf1;
                int out_count = (int)((int64_t)wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate + 256);
                int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
                int len2;
                if (out_size < 0) {
                    av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
                    break;
                }
                if (wanted_nb_samples != is->frame->nb_samples) {
                    if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / is->frame->sample_rate,
                                                wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate) < 0) {
                        av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
                        break;
                    }
                }
                av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
                if (!is->audio_buf1)
                    return AVERROR(ENOMEM);
                len2 = swr_convert(is->swr_ctx, out, out_count, in, is->frame->nb_samples);
                if (len2 < 0) {
                    av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
                    break;
                }
                if (len2 == out_count) {
                    av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
                    swr_init(is->swr_ctx);
                }
                is->audio_buf = is->audio_buf1;
                resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
            } else {
                is->audio_buf = is->frame->data[0];
                resampled_data_size = data_size;
            }

            audio_clock0 = is->audio_clock;
            /* update the audio clock with the pts */
            if (is->frame->pts != AV_NOPTS_VALUE)
                is->audio_clock = is->frame->pts * av_q2d(tb) + (double) is->frame->nb_samples / is->frame->sample_rate;
            else
                is->audio_clock = NAN;
            is->audio_clock_serial = is->audio_pkt_temp_serial;
#ifdef FFP_SHOW_AUDIO_DELAY
#ifdef DEBUG
            {
                static double last_clock;
                printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
                       is->audio_clock - last_clock,
                       is->audio_clock, audio_clock0);
                last_clock = is->audio_clock;
            }
#endif
#endif
            return resampled_data_size;
        }

        /* free the current packet */
        if (pkt->data)
            av_free_packet(pkt);
        memset(pkt_temp, 0, sizeof(*pkt_temp));
        pkt_temp->stream_index = -1;

        if (is->audioq.abort_request) {
            return -1;
        }

        if (is->audioq.nb_packets == 0)
            SDL_CondSignal(is->continue_read_thread);

        /* read next packet */
        if (packet_queue_get_or_buffering(ffp, &is->audioq, pkt, &is->audio_pkt_temp_serial, is->audio_finished) <= 0)
            return -1;

        if (pkt->data == flush_pkt.data) {
            avcodec_flush_buffers(dec);
            is->audio_buf_frames_pending = 0;
            is->audio_frame_next_pts = AV_NOPTS_VALUE;
            if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek)
                is->audio_frame_next_pts = is->audio_st->start_time;
        }

        *pkt_temp = *pkt;
    }
    return -1;
}

/* prepare a new audio buffer */
static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
{
    FFPlayer *ffp = opaque;
    VideoState *is = ffp->is;
    int audio_size, len1;
    int bytes_per_sec;
    int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);

    ffp->audio_callback_time = av_gettime();

    while (len > 0) {
        if (is->audio_buf_index >= is->audio_buf_size) {
           audio_size = audio_decode_frame(ffp);
           if (audio_size < 0) {
                /* if error, just output silence */
               is->audio_buf      = is->silence_buf;
               is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
           } else {
               if (is->show_mode != SHOW_MODE_VIDEO)
                   update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
               is->audio_buf_size = audio_size;
           }
           is->audio_buf_index = 0;
        }
        if (is->audio_pkt_temp_serial != is->audioq.serial) {
            // ALOGE("aout_cb: flush\n");
            is->audio_buf_index = is->audio_buf_size;
            memset(stream, 0, len);
            stream += len;
            len = 0;
            SDL_AoutFlushAudio(ffp->aout);
            break;
        }
        len1 = is->audio_buf_size - is->audio_buf_index;
        if (len1 > len)
            len1 = len;
        memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
        len -= len1;
        stream += len1;
        is->audio_buf_index += len1;
    }
    bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
    is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
    /* Let's assume the audio driver that is used by SDL has two periods. */
    if (!isnan(is->audio_clock)) {
        set_clock_at(&is->audclk, is->audio_clock - (double)(1 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec, is->audio_clock_serial, ffp->audio_callback_time / 1000000.0);
        sync_clock_to_slave(&is->extclk, &is->audclk);
    }
}

static int audio_open(FFPlayer *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
{
    FFPlayer *ffp = opaque;
    SDL_AudioSpec wanted_spec, spec;
    const char *env;
    static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};

    env = SDL_getenv("SDL_AUDIO_CHANNELS");
    if (env) {
        wanted_nb_channels = atoi(env);
        wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
    }
    if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
        wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
        wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
    }
    wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
    wanted_spec.freq = wanted_sample_rate;
    if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
        av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
        return -1;
    }
    wanted_spec.format = AUDIO_S16SYS;
    wanted_spec.silence = 0;
    wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
    wanted_spec.callback = sdl_audio_callback;
    wanted_spec.userdata = opaque;
    while (SDL_AoutOpenAudio(ffp->aout, &wanted_spec, &spec) < 0) {
        av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
        wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
        if (!wanted_spec.channels) {
            av_log(NULL, AV_LOG_ERROR,
                   "No more channel combinations to try, audio open failed\n");
            return -1;
        }
        wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
    }
    if (spec.format != AUDIO_S16SYS) {
        av_log(NULL, AV_LOG_ERROR,
               "SDL advised audio format %d is not supported!\n", spec.format);
        return -1;
    }
    if (spec.channels != wanted_spec.channels) {
        wanted_channel_layout = av_get_default_channel_layout(spec.channels);
        if (!wanted_channel_layout) {
            av_log(NULL, AV_LOG_ERROR,
                   "SDL advised channel count %d is not supported!\n", spec.channels);
            return -1;
        }
    }

    audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
    audio_hw_params->freq = spec.freq;
    audio_hw_params->channel_layout = wanted_channel_layout;
    audio_hw_params->channels =  spec.channels;
    return spec.size;
}

/* open a given stream. Return 0 if OK */
static int stream_component_open(FFPlayer *ffp, int stream_index)
{
    VideoState *is = ffp->is;
    AVFormatContext *ic = is->ic;
    AVCodecContext *avctx;
    AVCodec *codec;
    const char *forced_codec_name = NULL;
    AVDictionary *opts;
    AVDictionaryEntry *t = NULL;
    int sample_rate, nb_channels;
    int64_t channel_layout;
    int ret;
    int stream_lowres = ffp->lowres;

    if (stream_index < 0 || stream_index >= ic->nb_streams)
        return -1;
    avctx = ic->streams[stream_index]->codec;

    codec = avcodec_find_decoder(avctx->codec_id);

    switch (avctx->codec_type) {
        case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name = ffp->audio_codec_name; break;
        // FFP_MERGE: case AVMEDIA_TYPE_SUBTITLE:
        case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name = ffp->video_codec_name; break;
        default: break;
    }
    if (forced_codec_name)
        codec = avcodec_find_decoder_by_name(forced_codec_name);
    if (!codec) {
        // FIXME: 9 report unknown codec id/name
        if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
                                      "No codec could be found with name '%s'\n", forced_codec_name);
        else                   av_log(NULL, AV_LOG_WARNING,
                                      "No codec could be found with id %d\n", avctx->codec_id);
        return -1;
    }

    // FIXME: android set these from outside
#ifndef __APPLE__
    avctx->skip_frame        = ffp->skip_frame;
    avctx->skip_loop_filter  = ffp->skip_loop_filter;
#endif

    avctx->codec_id = codec->id;
    avctx->workaround_bugs   = ffp->workaround_bugs;
    if(stream_lowres > av_codec_get_max_lowres(codec)){
        av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
                av_codec_get_max_lowres(codec));
        stream_lowres = av_codec_get_max_lowres(codec);
    }
    av_codec_set_lowres(avctx, stream_lowres);
    avctx->error_concealment = ffp->error_concealment;

    if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
    if (ffp->fast)    avctx->flags2 |= CODEC_FLAG2_FAST;
    if(codec->capabilities & CODEC_CAP_DR1)
        avctx->flags |= CODEC_FLAG_EMU_EDGE;

    opts = filter_codec_opts(ffp->codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
    if (!av_dict_get(opts, "threads", NULL, 0))
        av_dict_set(&opts, "threads", "auto", 0);
    if (stream_lowres)
        av_dict_set(&opts, "lowres", av_asprintf("%d", stream_lowres), AV_DICT_DONT_STRDUP_VAL);
    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
        av_dict_set(&opts, "refcounted_frames", "1", 0);
    if (avcodec_open2(avctx, codec, &opts) < 0)
        return -1;
    if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
#ifdef FFP_MERGE
        return AVERROR_OPTION_NOT_FOUND;
#endif
    }

    ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
    switch (avctx->codec_type) {
    case AVMEDIA_TYPE_AUDIO:
#if CONFIG_AVFILTER
        {
            AVFilterLink *link;

            is->audio_filter_src.freq           = avctx->sample_rate;
            is->audio_filter_src.channels       = avctx->channels;
            is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
            is->audio_filter_src.fmt            = avctx->sample_fmt;
            if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
                return ret;
            link = is->out_audio_filter->inputs[0];
            sample_rate    = link->sample_rate;
            nb_channels    = link->channels;
            channel_layout = link->channel_layout;
        }
#else
        sample_rate    = avctx->sample_rate;
        nb_channels    = avctx->channels;
        channel_layout = avctx->channel_layout;
#endif

        /* prepare audio output */
        if ((ret = audio_open(ffp, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
            return ret;
        is->audio_hw_buf_size = ret;
        is->audio_src = is->audio_tgt;
        is->audio_buf_size  = 0;
        is->audio_buf_index = 0;

        /* init averaging filter */
        is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
        is->audio_diff_avg_count = 0;
        /* since we do not have a precise anough audio fifo fullness,
           we correct audio sync only if larger than this threshold */
        is->audio_diff_threshold = 2.0 * is->audio_hw_buf_size / av_samples_get_buffer_size(NULL, is->audio_tgt.channels, is->audio_tgt.freq, is->audio_tgt.fmt, 1);

        memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
        memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
        is->audio_pkt_temp.stream_index = -1;

        is->audio_stream = stream_index;
        is->audio_st = ic->streams[stream_index];

        packet_queue_start(&is->audioq);
        SDL_AoutPauseAudio(ffp->aout, 0);
        break;
    case AVMEDIA_TYPE_VIDEO:
        is->video_stream = stream_index;
        is->video_st = ic->streams[stream_index];

        packet_queue_start(&is->videoq);
        is->video_tid = SDL_CreateThreadEx(&is->_video_tid, video_thread, ffp, "ff_video");
        is->queue_attachments_req = 1;
        break;
    // FFP_MERGE: case AVMEDIA_TYPE_SUBTITLE:
    default:
        break;
    }
    return 0;
}

static void stream_component_close(FFPlayer *ffp, int stream_index)
{
    VideoState *is = ffp->is;
    AVFormatContext *ic = is->ic;
    AVCodecContext *avctx;

    if (stream_index < 0 || stream_index >= ic->nb_streams)
        return;
    avctx = ic->streams[stream_index]->codec;

    switch (avctx->codec_type) {
    case AVMEDIA_TYPE_AUDIO:
        packet_queue_abort(&is->audioq);

        SDL_AoutCloseAudio(ffp->aout);

        packet_queue_flush(&is->audioq);
        av_free_packet(&is->audio_pkt);
        swr_free(&is->swr_ctx);
        av_freep(&is->audio_buf1);
        is->audio_buf1_size = 0;
        is->audio_buf = NULL;
        av_frame_free(&is->frame);

#ifdef FFP_MERGE
        if (is->rdft) {
            av_rdft_end(is->rdft);
            av_freep(&is->rdft_data);
            is->rdft = NULL;
            is->rdft_bits = 0;
        }
#endif
#if CONFIG_AVFILTER
        avfilter_graph_free(&is->agraph);
#endif
        break;
    case AVMEDIA_TYPE_VIDEO:
        packet_queue_abort(&is->videoq);

        /* note: we also signal this mutex to make sure we deblock the
           video thread in all cases */
        SDL_LockMutex(is->pictq_mutex);
        SDL_CondSignal(is->pictq_cond);
        SDL_UnlockMutex(is->pictq_mutex);

        SDL_WaitThread(is->video_tid, NULL);

        packet_queue_flush(&is->videoq);
        break;
    // FFP_MERGE: case AVMEDIA_TYPE_SUBTITLE:
    default:
        break;
    }

    ic->streams[stream_index]->discard = AVDISCARD_ALL;
    avcodec_close(avctx);
    switch (avctx->codec_type) {
    case AVMEDIA_TYPE_AUDIO:
        is->audio_st = NULL;
        is->audio_stream = -1;
        break;
    case AVMEDIA_TYPE_VIDEO:
        is->video_st = NULL;
        is->video_stream = -1;
        break;
    // FFP_MERGE: case AVMEDIA_TYPE_SUBTITLE:
    default:
        break;
    }
}

static int decode_interrupt_cb(void *ctx)
{
    VideoState *is = ctx;
    return is->abort_request;
}

static int is_realtime(AVFormatContext *s)
{
    if(   !strcmp(s->iformat->name, "rtp")
       || !strcmp(s->iformat->name, "rtsp")
       || !strcmp(s->iformat->name, "sdp")
    )
        return 1;

    if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
                 || !strncmp(s->filename, "udp:", 4)
                )
    )
        return 1;
    return 0;
}

/* this thread gets the stream from the disk or the network */
static int read_thread(void *arg)
{
    FFPlayer *ffp = arg;
    VideoState *is = ffp->is;
    AVFormatContext *ic = NULL;
    int err, i, ret;
    int st_index[AVMEDIA_TYPE_NB];
    AVPacket pkt1, *pkt = &pkt1;
    int eof = 0;
    int64_t stream_start_time;
    int completed = 0;
    int pkt_in_play_range = 0;
    AVDictionaryEntry *t;
    AVDictionary **opts;
    int orig_nb_streams;
    SDL_mutex *wait_mutex = SDL_CreateMutex();
    int last_error = 0;
    int last_buffered_time_percentage = -1;
    int last_buffered_size_percentage = -1;
    int hwm_in_ms = ffp->fast_high_water_mark_in_ms; // use fast water mark for first loading

    memset(st_index, -1, sizeof(st_index));
    is->last_video_stream = is->video_stream = -1;
    is->last_audio_stream = is->audio_stream = -1;
#ifdef FFP_MERGE
    is->last_subtitle_stream = is->subtitle_stream = -1;
#endif

    ic = avformat_alloc_context();
    ic->interrupt_callback.callback = decode_interrupt_cb;
    ic->interrupt_callback.opaque = is;
    err = avformat_open_input(&ic, is->filename, is->iformat, &ffp->format_opts);
    if (err < 0) {
        print_error(is->filename, err);
        ret = -1;
        goto fail;
    }
    if ((t = av_dict_get(ffp->format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
        av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
#ifdef FFP_MERGE
        ret = AVERROR_OPTION_NOT_FOUND;
        goto fail;
#endif
    }
    is->ic = ic;

    if (ffp->genpts)
        ic->flags |= AVFMT_FLAG_GENPTS;

    opts = setup_find_stream_info_opts(ic, ffp->codec_opts);
    orig_nb_streams = ic->nb_streams;

    err = avformat_find_stream_info(ic, opts);
    if (err < 0) {
        av_log(NULL, AV_LOG_WARNING,
               "%s: could not find codec parameters\n", is->filename);
        ret = -1;
        goto fail;
    }
    for (i = 0; i < orig_nb_streams; i++)
        av_dict_free(&opts[i]);
    av_freep(&opts);

    if (ic->pb)
        ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end

    if (ffp->seek_by_bytes < 0)
        ffp->seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);

    is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
    ALOGI("max_frame_duration: %.3f\n", is->max_frame_duration);

#ifdef FFP_MERGE
    if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
        window_title = av_asprintf("%s - %s", t->value, input_filename);
#endif
    /* if seeking requested, we execute it */
    if (ffp->start_time != AV_NOPTS_VALUE) {
        int64_t timestamp;

        timestamp = ffp->start_time;
        /* add the stream start time */
        if (ic->start_time != AV_NOPTS_VALUE)
            timestamp += ic->start_time;
        ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
        if (ret < 0) {
            av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
                    is->filename, (double)timestamp / AV_TIME_BASE);
        }
    }

    is->realtime = is_realtime(ic);

    for (i = 0; i < ic->nb_streams; i++)
        ic->streams[i]->discard = AVDISCARD_ALL;
    if (!ffp->video_disable)
        st_index[AVMEDIA_TYPE_VIDEO] =
            av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
                                ffp->wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
    if (!ffp->audio_disable)
        st_index[AVMEDIA_TYPE_AUDIO] =
            av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
                                ffp->wanted_stream[AVMEDIA_TYPE_AUDIO],
                                st_index[AVMEDIA_TYPE_VIDEO],
                                NULL, 0);
#ifdef FFP_MERGE
    if (!ffp->video_disable && !ffp->subtitle_disable)
        st_index[AVMEDIA_TYPE_SUBTITLE] =
            av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
                                ffp->wanted_stream[AVMEDIA_TYPE_SUBTITLE],
                                (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
                                 st_index[AVMEDIA_TYPE_AUDIO] :
                                 st_index[AVMEDIA_TYPE_VIDEO]),
                                NULL, 0);
#endif
    av_dump_format(ic, 0, is->filename, 0);

    is->show_mode = ffp->show_mode;

    /* open the streams */
    if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
        stream_component_open(ffp, st_index[AVMEDIA_TYPE_AUDIO]);
    }

    ret = -1;
    if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
        ret = stream_component_open(ffp, st_index[AVMEDIA_TYPE_VIDEO]);
    }
    if (is->show_mode == SHOW_MODE_NONE)
        is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;

#ifdef FFP_MERGE
    if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
        stream_component_open(ffp, st_index[AVMEDIA_TYPE_SUBTITLE]);
    }
#endif

    if (is->video_stream < 0 && is->audio_stream < 0) {
        av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
               is->filename);
        ret = -1;
        goto fail;
    }

    if (ffp->infinite_buffer < 0 && is->realtime)
        ffp->infinite_buffer = 1;

    ffp->prepared = true;
    ffp_notify_msg1(ffp, FFP_MSG_PREPARED);
    if (is->video_st && is->video_st->codec) {
        AVCodecContext *avctx = is->video_st->codec;
        ffp_notify_msg3(ffp, FFP_MSG_VIDEO_SIZE_CHANGED, avctx->width, avctx->height);
        ffp_notify_msg3(ffp, FFP_MSG_SAR_CHANGED, avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den);
    }
    if (ffp->auto_start) {
        ffp_notify_msg1(ffp, FFP_REQ_START);
        ffp->auto_start = 0;
    }

    for (;;) {
        if (is->abort_request)
            break;
#ifdef FFP_MERGE
        if (is->paused != is->last_paused) {
            is->last_paused = is->paused;
            if (is->paused)
                is->read_pause_return = av_read_pause(ic);
            else
                av_read_play(ic);
        }
#endif
#if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
        if (is->paused &&
                (!strcmp(ic->iformat->name, "rtsp") ||
                 (ic->pb && !strncmp(ffp->input_filename, "mmsh:", 5)))) {
            /* wait 10 ms to avoid trying to get another packet */
            /* XXX: horrible */
            SDL_Delay(10);
            continue;
        }
#endif
        if (is->seek_req) {
            int64_t seek_target = is->seek_pos;
            int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
            int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
// FIXME the +-2 is due to rounding being not done in the correct direction in generation
//      of the seek_pos/seek_rel variables

            hwm_in_ms = ffp->fast_high_water_mark_in_ms;
            ffp_toggle_buffering(ffp, 1);
            ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
            if (ret < 0) {
                av_log(NULL, AV_LOG_ERROR,
                       "%s: error while seeking\n", is->ic->filename);
            } else {
                if (is->audio_stream >= 0) {
                    packet_queue_flush(&is->audioq);
                    packet_queue_put(&is->audioq, &flush_pkt);
                }
#ifdef FFP_MERGE
                if (is->subtitle_stream >= 0) {
                    packet_queue_flush(&is->subtitleq);
                    packet_queue_put(&is->subtitleq, &flush_pkt);
                }
#endif
                if (is->video_stream >= 0) {
                    packet_queue_flush(&is->videoq);
                    packet_queue_put(&is->videoq, &flush_pkt);
                }
                if (is->seek_flags & AVSEEK_FLAG_BYTE) {
                   set_clock(&is->extclk, NAN, 0);
                } else {
                   set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
                }
            }
            is->seek_req = 0;
            is->queue_attachments_req = 1;
            eof = 0;
            completed = 0;
            SDL_LockMutex(ffp->is->play_mutex);
            if (ffp->auto_start) {
                // ALOGE("seek: auto_start\n");
                is->pause_req = 0;
                is->buffering_on = 1;
                ffp->auto_start = 0;
                stream_update_pause_l(ffp);
            }
            if (is->pause_req)
                step_to_next_frame_l(ffp);
            SDL_UnlockMutex(ffp->is->play_mutex);
            ffp_notify_msg1(ffp, FFP_MSG_SEEK_COMPLETE);
            ffp_toggle_buffering(ffp, 1);
        }
        if (is->queue_attachments_req) {
            if (is->video_st && (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
                AVPacket copy;
                if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
                    goto fail;
                packet_queue_put(&is->videoq, &copy);
                packet_queue_put_nullpacket(&is->videoq, is->video_stream);
            }
            is->queue_attachments_req = 0;
        }

        /* if the queue are full, no need to read more */
        if (ffp->infinite_buffer<1 && !is->seek_req &&
#ifdef FFP_MERGE
              (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
#else
              (is->audioq.size + is->videoq.size > ffp->max_buffer_size
#endif
            || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
                && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
                    || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
#ifdef FFP_MERGE
                && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
#else
                ))) {
#endif
            if (!eof) {
                // ALOGE("ffp_toggle_buffering: full\n");
                ffp_toggle_buffering(ffp, 0);
            }
            /* wait 10 ms */
            SDL_LockMutex(wait_mutex);
            SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
            SDL_UnlockMutex(wait_mutex);
            continue;
        }
        if ((!is->paused || completed) &&
            (!is->audio_st || is->audio_finished == is->audioq.serial) &&
            (!is->video_st || (is->video_finished == is->videoq.serial && is->pictq_size == 0))) {
            if (ffp->loop != 1 && (!ffp->loop || --ffp->loop)) {
                stream_seek(is, ffp->start_time != AV_NOPTS_VALUE ? ffp->start_time : 0, 0, 0);
            } else if (ffp->autoexit) {
                ret = AVERROR_EOF;
                goto fail;
            } else {
                if (completed) {
                    ALOGE("ffp_toggle_buffering: eof\n");
                    SDL_LockMutex(wait_mutex);
                    // infinite wait may block shutdown
                    while(!is->abort_request && !is->seek_req)
                        SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
                    SDL_UnlockMutex(wait_mutex);
                    if (!is->abort_request)
                        continue;
                } else {
                    completed = 1;
                    ffp->auto_start = 0;

                    // TODO: 0 it's a bit early to notify complete here
                    ALOGE("ffp_toggle_buffering: completed\n");
                    ffp_toggle_buffering(ffp, 0);
                    toggle_pause(ffp, 1);
                    ffp_notify_msg1(ffp, FFP_MSG_COMPLETED);
                }
            }
        }
        if (eof) {
            if (is->video_stream >= 0)
                packet_queue_put_nullpacket(&is->videoq, is->video_stream);
            if (is->audio_stream >= 0)
                packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
            ffp_toggle_buffering(ffp, 0);
            SDL_Delay(10);
            eof=0;
            continue;
        }
        ret = av_read_frame(ic, pkt);
        if (ret < 0) {
            if (ret == AVERROR_EOF || url_feof(ic->pb)) {
                eof = 1;
            } else if (ic->pb && ic->pb->error) {
                // TODO: 9 notify error until a/v finished
                last_error = ic->pb->error;
                ALOGE("av_read_frame error: %d\n", ic->pb->error);
                ffp_notify_msg2(ffp, FFP_MSG_ERROR, last_error);
                break;
            }
            SDL_LockMutex(wait_mutex);
            SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
            SDL_UnlockMutex(wait_mutex);
            continue;
        }
        /* check if packet is in play range specified by user, then queue, otherwise discard */
        stream_start_time = ic->streams[pkt->stream_index]->start_time;
        pkt_in_play_range = ffp->duration == AV_NOPTS_VALUE ||
                (pkt->pts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
                av_q2d(ic->streams[pkt->stream_index]->time_base) -
                (double)(ffp->start_time != AV_NOPTS_VALUE ? ffp->start_time : 0) / 1000000
                <= ((double)ffp->duration / 1000000);
        if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
            packet_queue_put(&is->audioq, pkt);
        } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
                   && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
            packet_queue_put(&is->videoq, pkt);
#ifdef FFP_MERGE
        } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
            packet_queue_put(&is->subtitleq, pkt);
#endif
        } else {
            av_free_packet(pkt);
        }

        do {
            int buf_size_percent     = -1;
            int buf_time_percent     = -1;
            int hwm_in_bytes         = ffp->high_water_mark_in_bytes;
            int need_start_buffering = 0;
            if (hwm_in_ms > 0) {
                int     cached_duration_in_ms = -1;
                int64_t audio_cached_duration = -1;
                int64_t video_cached_duration = -1;

                if (is->audio_st && is->audio_st->time_base.den > 0 && is->audio_st->time_base.num > 0)
                    audio_cached_duration = is->audioq.duration * av_q2d(is->audio_st->time_base) * 1000;

                if (is->video_st && is->video_st->time_base.den > 0 && is->video_st->time_base.num > 0)
                    video_cached_duration = is->videoq.duration * av_q2d(is->video_st->time_base) * 1000;

                if (video_cached_duration >= 0 && audio_cached_duration >= 0) {
                    cached_duration_in_ms = (int)IJKMAX(video_cached_duration, audio_cached_duration);
                } else if (video_cached_duration >= 0) {
                    cached_duration_in_ms = (int)video_cached_duration;
                } else if (audio_cached_duration >= 0) {
                    cached_duration_in_ms = (int)audio_cached_duration;
                }

                if (cached_duration_in_ms >= 0) {
                    buf_time_percent = (int)av_rescale(cached_duration_in_ms, 1005, hwm_in_ms * 10);
                    if (last_buffered_time_percentage != buf_time_percent) {
#ifdef FFP_SHOW_DEMUX_CACHE
                        ALOGE("time cache=%%%d (%d/%d)\n", buf_time_percent, cached_duration_in_ms, hwm_in_ms);
#endif
                        last_buffered_time_percentage = buf_time_percent;
                        ffp_notify_msg3(ffp, FFP_MSG_BUFFERING_TIME_UPDATE, cached_duration_in_ms, hwm_in_ms);
                    }
                }
            }

            int cached_size = is->audioq.size + is->videoq.size;
            if (hwm_in_bytes > 0) {
                buf_size_percent = (int)av_rescale(cached_size, 1005, hwm_in_bytes * 10);
                if (last_buffered_size_percentage != buf_size_percent) {
#ifdef FFP_SHOW_DEMUX_CACHE
                    ALOGE("size cache=%%%d (%d/%d)\n", buf_size_percent, cached_size, hwm_in_bytes);
#endif
                    last_buffered_size_percentage = buf_size_percent;
                    ffp_notify_msg3(ffp, FFP_MSG_BUFFERING_BYTES_UPDATE, cached_size, hwm_in_bytes);
                }
            }

            if (buf_time_percent >= 0) {
                // alwas depend on cache duration if valid
                if (buf_time_percent >= 100)
                    need_start_buffering = 1;
            } else {
                if (buf_size_percent >= 100)
                    need_start_buffering = 1;
            }

            if (need_start_buffering) {
                if (hwm_in_ms < ffp->normal_high_water_mark_in_ms)
                    hwm_in_ms = ffp->normal_high_water_mark_in_ms;

                hwm_in_ms *= 2;

                if (hwm_in_ms > ffp->max_high_water_mark_in_ms)
                    hwm_in_ms = ffp->max_high_water_mark_in_ms;

                ffp_toggle_buffering(ffp, 0);
            }
        } while(0);

        // FIXME: 0 notify progress
    }
    /* wait until the end */
    while (!is->abort_request) {
        SDL_Delay(100);
    }

    ret = 0;
 fail:
    /* close each stream */
    if (is->audio_stream >= 0)
        stream_component_close(ffp, is->audio_stream);
    if (is->video_stream >= 0)
        stream_component_close(ffp, is->video_stream);
#ifdef FFP_MERGE
    if (is->subtitle_stream >= 0)
        stream_component_close(ffp, is->subtitle_stream);
#endif
    if (is->ic) {
        avformat_close_input(&is->ic);
    }

    if (!ffp->prepared || !is->abort_request) {
        ffp->last_error = last_error;
        ffp_notify_msg2(ffp, FFP_MSG_ERROR, last_error);
    }

    SDL_DestroyMutex(wait_mutex);
    return 0;
}

static int video_refresh_thread(void *arg);
static VideoState *stream_open(FFPlayer *ffp, const char *filename, AVInputFormat *iformat)
{
    assert(!ffp->is);
    VideoState *is = av_mallocz(sizeof(VideoState));
    if (!is)
        return NULL;
    av_strlcpy(is->filename, filename, sizeof(is->filename));
    is->iformat = iformat;
    is->ytop    = 0;
    is->xleft   = 0;

    /* start video display */
    is->pictq_mutex = SDL_CreateMutex();
    is->pictq_cond  = SDL_CreateCond();

#ifdef FFP_MERGE
    is->subpq_mutex = SDL_CreateMutex();
    is->subpq_cond  = SDL_CreateCond();
#endif

    packet_queue_init(&is->videoq);
    packet_queue_init(&is->audioq);
#ifdef FFP_MERGE
    packet_queue_init(&is->subtitleq);
#endif

    is->continue_read_thread = SDL_CreateCond();

    init_clock(&is->vidclk, &is->videoq.serial);
    init_clock(&is->audclk, &is->audioq.serial);
    init_clock(&is->extclk, &is->extclk.serial);
    is->audio_clock_serial = -1;
    is->audio_last_serial = -1;
    is->av_sync_type = ffp->av_sync_type;

    is->play_mutex = SDL_CreateMutex();
    ffp->is = is;

    is->video_refresh_tid = SDL_CreateThreadEx(&is->_video_refresh_tid, video_refresh_thread, ffp, "ff_vout");
    if (!is->video_refresh_tid) {
        av_freep(&ffp->is);
        return NULL;
    }

    is->read_tid = SDL_CreateThreadEx(&is->_read_tid, read_thread, ffp, "ff_read");
    if (!is->read_tid) {
        is->abort_request = true;
        SDL_WaitThread(is->video_refresh_tid, NULL);
        av_freep(&ffp->is);
        return NULL;
    }
    return is;
}

// FFP_MERGE: stream_cycle_channel
// FFP_MERGE: toggle_full_screen
// FFP_MERGE: toggle_audio_display
// FFP_MERGE: refresh_loop_wait_event
// FFP_MERGE: event_loop
// FFP_MERGE: opt_frame_size
// FFP_MERGE: opt_width
// FFP_MERGE: opt_height
// FFP_MERGE: opt_format
// FFP_MERGE: opt_frame_pix_fmt
// FFP_MERGE: opt_sync
// FFP_MERGE: opt_seek
// FFP_MERGE: opt_duration
// FFP_MERGE: opt_show_mode
// FFP_MERGE: opt_input_file
// FFP_MERGE: opt_codec
// FFP_MERGE: dummy
// FFP_MERGE: options
// FFP_MERGE: show_usage
// FFP_MERGE: show_help_default
static int video_refresh_thread(void *arg)
{
    FFPlayer *ffp = arg;
    VideoState *is = ffp->is;
    double remaining_time = 0.0;
    while (!is->abort_request) {
        if (remaining_time > 0.0)
            av_usleep((int)(int64_t)(remaining_time * 1000000.0));
        remaining_time = REFRESH_RATE;
        if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
            video_refresh(ffp, &remaining_time);
    }

    return 0;
}

static int lockmgr(void **mtx, enum AVLockOp op)
{
    switch (op) {
    case AV_LOCK_CREATE:
        *mtx = SDL_CreateMutex();
        if (!*mtx)
            return 1;
        return 0;
    case AV_LOCK_OBTAIN:
        return !!SDL_LockMutex(*mtx);
    case AV_LOCK_RELEASE:
        return !!SDL_UnlockMutex(*mtx);
    case AV_LOCK_DESTROY:
        SDL_DestroyMutex(*mtx);
        return 0;
    }
    return 1;
}

// FFP_MERGE: main

/*****************************************************************************
 * end last line in ffplay.c
 ****************************************************************************/

static bool g_ffmpeg_global_inited = false;

static void ffp_log_callback_help(void *ptr, int level, const char *fmt, va_list vl)
{
    int ffplv = IJK_LOG_VERBOSE;
    if (level <= AV_LOG_ERROR)
        ffplv = IJK_LOG_ERROR;
    else if (level <= AV_LOG_WARNING)
        ffplv = IJK_LOG_WARN;
    else if (level <= AV_LOG_INFO)
        ffplv = IJK_LOG_INFO;
    else if (level <= AV_LOG_VERBOSE)
        ffplv = IJK_LOG_VERBOSE;
    else
        ffplv = IJK_LOG_DEBUG;

    if (level <= AV_LOG_INFO)
        VLOG(ffplv, IJK_LOG_TAG, fmt, vl);
}

void ffp_global_init()
{
    if (g_ffmpeg_global_inited)
        return;

    /* register all codecs, demux and protocols */
    avcodec_register_all();
#if CONFIG_AVDEVICE
    avdevice_register_all();
#endif
#if CONFIG_AVFILTER
    avfilter_register_all();
#endif
    av_register_all();
    avformat_network_init();

    av_lockmgr_register(lockmgr);
    av_log_set_callback(ffp_log_callback_help);

    av_init_packet(&flush_pkt);
    flush_pkt.data = (uint8_t *)&flush_pkt;

    g_ffmpeg_global_inited = true;
}

void ffp_global_uninit()
{
    if (!g_ffmpeg_global_inited)
        return;

    av_lockmgr_register(NULL);

#if CONFIG_AVFILTER
    avfilter_uninit();
    av_freep(&vfilters);
#endif
    avformat_network_deinit();

    g_ffmpeg_global_inited = false;
}

FFPlayer *ffp_create()
{
    FFPlayer* ffp = (FFPlayer*) av_mallocz(sizeof(FFPlayer));
    if (!ffp)
        return NULL;

    msg_queue_init(&ffp->msg_queue);
    ffp_reset_internal(ffp);
    return ffp;
}

void ffp_destroy(FFPlayer *ffp)
{
    if (!ffp)
        return;

    if (ffp && ffp->is) {
        av_log(NULL, AV_LOG_WARNING, "ffp_destroy_ffplayer: force stream_close()");
        stream_close(ffp);
        ffp->is = NULL;
    }

    ffp_reset_internal(ffp);

    msg_queue_destroy(&ffp->msg_queue);

    SDL_VoutFreeP(&ffp->vout);
    SDL_AoutFreeP(&ffp->aout);

    av_free(ffp);
}

void ffp_destroy_p(FFPlayer **pffp)
{
    if (!pffp)
        return;

    ffp_destroy(*pffp);
    *pffp = NULL;
}

void ffp_set_format_option(FFPlayer *ffp, const char *name, const char *value)
{
    if (!ffp)
        return;

    av_dict_set(&ffp->format_opts, name, value, 0);
}

void ffp_set_codec_option(FFPlayer *ffp, const char *name, const char *value)
{
    if (!ffp)
        return;

    av_dict_set(&ffp->codec_opts, name, value, 0);
}

void ffp_set_sws_option(FFPlayer *ffp, const char *name, const char *value)
{
    if (!ffp)
        return;

    av_dict_set(&ffp->sws_opts, name, value, 0);
}

void ffp_set_overlay_format(FFPlayer *ffp, int chroma_fourcc)
{
    switch (chroma_fourcc) {
        case SDL_FCC_I420:
        case SDL_FCC_YV12:
        case SDL_FCC_RV16:
        case SDL_FCC_RV24:
        case SDL_FCC_RV32:
            ffp->overlay_format = chroma_fourcc;
            break;
        default:
            ALOGE("ffp_set_overlay_format: unknown chroma fourcc: %d\n", chroma_fourcc);
            break;
    }
}

int ffp_prepare_async_l(FFPlayer *ffp, const char *file_name)
{
    assert(ffp);
    assert(!ffp->is);
    assert(file_name);

    VideoState *is = stream_open(ffp, file_name, NULL);
    if (!is) {
        av_log(NULL, AV_LOG_WARNING, "ffp_prepare_async_l: stream_open failed OOM");
        return EIJK_OUT_OF_MEMORY;
    }

    ffp->is = is;
    return 0;
}

int ffp_start_from_l(FFPlayer *ffp, long msec)
{
    // ALOGE("ffp_start_at_l\n");
    assert(ffp);
    VideoState *is = ffp->is;
    if (!is)
        return EIJK_NULL_IS_PTR;

    ffp->auto_start = 1;
    ffp_toggle_buffering(ffp, 1);
    ffp_seek_to_l(ffp, msec);
    return 0;
}

int ffp_start_l(FFPlayer *ffp)
{
    // ALOGE("ffp_start_l\n");
    assert(ffp);
    VideoState *is = ffp->is;
    if (!is)
        return EIJK_NULL_IS_PTR;

    toggle_pause(ffp, 0);
    return 0;
}

int ffp_pause_l(FFPlayer *ffp)
{
    // ALOGE("ffp_pause_l\n");
    assert(ffp);
    VideoState *is = ffp->is;
    if (!is)
        return EIJK_NULL_IS_PTR;

    toggle_pause(ffp, 1);
    return 0;
}

int ffp_stop_l(FFPlayer *ffp)
{
    assert(ffp);
    VideoState *is = ffp->is;
    if (is)
        is->abort_request = 1;

    msg_queue_abort(&ffp->msg_queue);
    return 0;
}

int ffp_wait_stop_l(FFPlayer *ffp)
{
    assert(ffp);

    if (ffp->is) {
        ffp_stop_l(ffp);
        stream_close(ffp);
        ffp->is = NULL;
    }
    return 0;
}

int ffp_seek_to_l(FFPlayer *ffp, long msec)
{
    assert(ffp);
    VideoState *is = ffp->is;
    if (!is)
        return EIJK_NULL_IS_PTR;

    int64_t seek_pos = milliseconds_to_fftime(msec);
    int64_t start_time = is->ic->start_time;
    if (start_time > 0 && start_time != AV_NOPTS_VALUE)
        seek_pos += start_time;

    // FIXME: 9 seek by bytes
    // FIXME: 9 seek out of range
    // FIXME: 9 seekable
    ALOGE("stream_seek %"PRId64"(%d) + %"PRId64", \n", seek_pos, (int)msec, start_time);
    stream_seek(is, seek_pos, 0, 0);
    return 0;
}

long ffp_get_current_position_l(FFPlayer *ffp)
{
    assert(ffp);
    VideoState *is = ffp->is;
    if (!is || !is->ic)
        return 0;

    int64_t start_time = is->ic->start_time;
    int64_t start_diff = 0;
    if (start_time > 0 && start_time != AV_NOPTS_VALUE)
        start_diff = fftime_to_milliseconds(start_time);

    int64_t pos = 0;
    double pos_clock = get_master_clock(is);
    if (isnan(pos_clock)) {
        // ALOGE("pos = seek_pos: %d\n", (int)is->seek_pos);
        pos = fftime_to_milliseconds(is->seek_pos);
    } else {
        // ALOGE("pos = pos_clock: %f\n", pos_clock);
        pos = pos_clock * 1000;
    }

    if (pos < 0 || pos < start_diff)
        return 0;

    int64_t adjust_pos = pos - start_diff;
    // ALOGE("pos=%ld\n", (long)adjust_pos);
    return (long)adjust_pos;
}

long ffp_get_duration_l(FFPlayer *ffp)
{
    assert(ffp);
    VideoState *is = ffp->is;
    if (!is || !is->ic)
        return 0;

    int64_t start_time = is->ic->start_time;
    int64_t start_diff = 0;
    if (start_time > 0 && start_time != AV_NOPTS_VALUE)
        start_diff = fftime_to_milliseconds(start_time);

    int64_t duration = fftime_to_milliseconds(is->ic->duration);
    if (duration < 0 || duration < start_diff)
        return 0;

    int64_t adjust_duration = duration - start_diff;
    // ALOGE("dur=%ld\n", (long)adjust_duration);
    return (long)adjust_duration;
}

void ffp_toggle_buffering_l(FFPlayer *ffp, int buffering_on)
{
    VideoState *is = ffp->is;
    if (buffering_on && !is->buffering_on) {
        ALOGD("ffp_toggle_buffering_l: start\n");
        is->buffering_on = 1;
        is->frame_drops_early = 0;
        stream_update_pause_l(ffp);
        ffp_notify_msg1(ffp, FFP_MSG_BUFFERING_START);
    } else if (!buffering_on && is->buffering_on){
        ALOGD("ffp_toggle_buffering_l: end\n");
        is->buffering_on = 0;
        is->frame_drops_early = 0;
        stream_update_pause_l(ffp);
        ffp_notify_msg1(ffp, FFP_MSG_BUFFERING_END);
    }
}

void ffp_toggle_buffering(FFPlayer *ffp, int start_buffering)
{
    SDL_LockMutex(ffp->is->play_mutex);
    ffp_toggle_buffering_l(ffp, start_buffering);
    SDL_UnlockMutex(ffp->is->play_mutex);
}