ffplay: optimized decode options

ijkmedia/ijkplayer/ff_ffplay.c

@@ -895,6 +895,19 @@ static int get_video_frame(FFPlayer *ffp, AVFrame *frame, AVPacket *pkt, int *se
         return 0;
     }
 
+    if (is->recover_skip_frame && (pkt->flags & AV_PKT_FLAG_KEY)) {
+        is->recover_skip_frame = 0;
+        is->video_st->codec->skip_frame = AVDISCARD_NONREF;
+        avcodec_flush_buffers(is->video_st->codec);
+    }
+
+    if (is->frame_drops_early > 0) {
+        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
@@ -947,6 +960,9 @@ static int get_video_frame(FFPlayer *ffp, AVFrame *frame, AVPacket *pkt, int *se
             SDL_UnlockMutex(is->pictq_mutex);
         }
 
+        if (ret)
+            is->recover_skip_frame = 1;
+
         return ret;
     }
     return 0;
@@ -1664,6 +1680,8 @@ static int stream_component_open(FFPlayer *ffp, int stream_index)
     }
 
     avctx->skip_loop_filter  = AVDISCARD_ALL;
+    avctx->skip_frame        = AVDISCARD_NONREF;
+    avctx->flags            |= CODEC_FLAG_LOW_DELAY;
 
     avctx->codec_id = codec->id;
     avctx->workaround_bugs   = ffp->workaround_bugs;

ijkmedia/ijkplayer/ff_ffplay_def.h

@@ -44,7 +44,7 @@
 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
 /* no AV correction is done if too big error */
-#define AV_NOSYNC_THRESHOLD 10.0
+#define AV_NOSYNC_THRESHOLD 100.0
 
 /* maximum audio speed change to get correct sync */
 #define SAMPLE_CORRECTION_PERCENT_MAX 10
@@ -58,7 +58,8 @@
 #define AUDIO_DIFF_AVG_NB   20
 
 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
-#define REFRESH_RATE 0.0029 // 172.0 fps at most (High Level 5.2 1,920×1,080@172.0)
+// 172.0 fps at most (High Level 5.2 1,920×1,080@172.0)
+#define REFRESH_RATE 0.03
 
 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
@@ -264,6 +265,8 @@ typedef struct VideoState {
 
     int buffering_on;
     int pause_req;
+
+    int recover_skip_frame;
 } VideoState;
 
 /* options specified by the user */
@@ -292,7 +295,7 @@ static int av_sync_type = AV_SYNC_AUDIO_MASTER;
 static int64_t start_time = AV_NOPTS_VALUE;
 static int64_t duration = AV_NOPTS_VALUE;
 static int workaround_bugs = 1;
-static int fast = 0;
+static int fast = 1;
 static int genpts = 0;
 static int lowres = 0;
 static int idct = FF_IDCT_AUTO;