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提交 152ba68c 编写于 作者: M Michael Niedermayer
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YV12 support (warning this is experimental & wont work with offical huffyuv... 

YV12 support (warning this is experimental & wont work with offical huffyuv but there is a approx. 20% speed & compression gain)
10l flush_put_bits()

Originally committed as revision 1214 to svn://svn.ffmpeg.org/ffmpeg/trunk
上级 b24cf828
隐藏空白更改
内联 并排
Showing with 116 addition and 29 deletion
libavcodec/huffyuv.c
浏览文件 @ 152ba68c
......@@ -328,7 +328,7 @@ s->bgr32=1;
//if(avctx->extradata)
// printf("extradata:%X, extradata_size:%d\n", *(uint32_t*)avctx->extradata, avctx->extradata_size);
if(avctx->extradata_size){
if(avctx->bits_per_sample&7)
if((avctx->bits_per_sample&7) && avctx->bits_per_sample != 12)
s->version=1; // do such files exist at all?
else
s->version=2;
......@@ -473,6 +473,13 @@ static int encode_init(AVCodecContext *avctx)
s->version=2;
switch(avctx->pix_fmt){
case PIX_FMT_YUV420P:
if(avctx->strict_std_compliance>=0){
fprintf(stderr, "YV12-huffyuv is experimental, there WILL be no compatbility! (use (v)strict=-1)\n");
return -1;
}
s->bitstream_bpp= 12;
break;
case PIX_FMT_YUV422P:
s->bitstream_bpp= 16;
break;
......@@ -554,6 +561,17 @@ static void decode_422_bitstream(HYuvContext *s, int count){
}
}
static void decode_gray_bitstream(HYuvContext *s, int count){
int i;
count/=2;
for(i=0; i<count; i++){
s->temp[0][2*i ]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
s->temp[0][2*i+1]= get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);
}
}
static void encode_422_bitstream(HYuvContext *s, int count){
int i;
......@@ -575,6 +593,23 @@ static void encode_422_bitstream(HYuvContext *s, int count){
}
}
static void encode_gray_bitstream(HYuvContext *s, int count){
int i;
count/=2;
if(s->flags&CODEC_FLAG_PASS1){
for(i=0; i<count; i++){
s->stats[0][ s->temp[0][2*i ] ]++;
s->stats[0][ s->temp[0][2*i+1] ]++;
}
}else{
for(i=0; i<count; i++){
put_bits(&s->pb, s->len[0][ s->temp[0][2*i ] ], s->bits[0][ s->temp[0][2*i ] ]);
put_bits(&s->pb, s->len[0][ s->temp[0][2*i+1] ], s->bits[0][ s->temp[0][2*i+1] ]);
}
}
}
static void decode_bgr_bitstream(HYuvContext *s, int count){
int i;
......@@ -634,7 +669,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
init_get_bits(&s->gb, s->bitstream_buffer, buf_size);
if(s->bitstream_bpp<24){
int y;
int y, cy;
int lefty, leftu, leftv;
int lefttopy, lefttopu, lefttopv;
......@@ -663,13 +698,28 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
leftv= add_left_prediction(s->picture[2] + 1, s->temp[2], width2-1, leftv);
}
for(y=1; y<s->height; y++){
for(cy=y=1; y<s->height; y++,cy++){
uint8_t *ydst, *udst, *vdst;
decode_422_bitstream(s, width);
if(s->bitstream_bpp==12){
decode_gray_bitstream(s, width);
ydst= s->picture[0] + s->linesize[0]*y;
lefty= add_left_prediction(ydst, s->temp[0], width, lefty);
if(s->predictor == PLANE){
if(y>s->interlaced)
s->dsp.add_bytes(ydst, ydst - fake_ystride, width);
}
y++;
if(y>=s->height) break;
}
ydst= s->picture[0] + s->linesize[0]*y;
udst= s->picture[1] + s->linesize[1]*y;
vdst= s->picture[2] + s->linesize[2]*y;
udst= s->picture[1] + s->linesize[1]*cy;
vdst= s->picture[2] + s->linesize[2]*cy;
decode_422_bitstream(s, width);
lefty= add_left_prediction(ydst, s->temp[0], width, lefty);
if(!(s->flags&CODEC_FLAG_GRAY)){
......@@ -677,7 +727,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
leftv= add_left_prediction(vdst, s->temp[2], width2, leftv);
}
if(s->predictor == PLANE){
if(y>s->interlaced){
if(cy>s->interlaced){
s->dsp.add_bytes(ydst, ydst - fake_ystride, width);
if(!(s->flags&CODEC_FLAG_GRAY)){
s->dsp.add_bytes(udst, udst - fake_ustride, width2);
......@@ -696,7 +746,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
leftv= add_left_prediction(s->picture[2] + 1, s->temp[2], width2-1, leftv);
}
y=1;
cy=y=1;
/* second line is left predicted for interlaced case */
if(s->interlaced){
......@@ -706,7 +756,7 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
leftu= add_left_prediction(s->picture[1] + s->linesize[2], s->temp[1], width2, leftu);
leftv= add_left_prediction(s->picture[2] + s->linesize[1], s->temp[2], width2, leftv);
}
y++;
y++; cy++;
}
/* next 4 pixels are left predicted too */
......@@ -727,15 +777,26 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, uint8
add_median_prediction(s->picture[1] + fake_ustride+2, s->picture[1]+2, s->temp[1], width2-2, &leftu, &lefttopu);
add_median_prediction(s->picture[2] + fake_vstride+2, s->picture[2]+2, s->temp[2], width2-2, &leftv, &lefttopv);
}
y++;
for(; y<height; y++){
y++; cy++;
for(; y<height; y++,cy++){
uint8_t *ydst, *udst, *vdst;
if(s->bitstream_bpp==12){
while(2*cy > y){
decode_gray_bitstream(s, width);
ydst= s->picture[0] + s->linesize[0]*y;
add_median_prediction(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
y++;
}
if(y>=height) break;
}
decode_422_bitstream(s, width);
ydst= s->picture[0] + s->linesize[0]*y;
udst= s->picture[1] + s->linesize[1]*y;
vdst= s->picture[2] + s->linesize[2]*y;
udst= s->picture[1] + s->linesize[1]*cy;
vdst= s->picture[2] + s->linesize[2]*cy;
add_median_prediction(ydst, ydst - fake_ystride, s->temp[0], width, &lefty, &lefttopy);
if(!(s->flags&CODEC_FLAG_GRAY)){
......@@ -834,8 +895,8 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
s->linesize[i]= pict->linesize[i];
}
if(avctx->pix_fmt == PIX_FMT_YUV422P){
int lefty, leftu, leftv, y;
if(avctx->pix_fmt == PIX_FMT_YUV422P || avctx->pix_fmt == PIX_FMT_YUV420P){
int lefty, leftu, leftv, y, cy;
put_bits(&s->pb, 8, leftv= s->picture[2][0]);
put_bits(&s->pb, 8, lefty= s->picture[0][1]);
......@@ -850,14 +911,14 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
if(s->predictor==MEDIAN){
int lefttopy, lefttopu, lefttopv;
y=1;
cy=y=1;
if(s->interlaced){
lefty= sub_left_prediction(s->temp[0], s->picture[0]+s->linesize[0], width , lefty);
leftu= sub_left_prediction(s->temp[1], s->picture[1]+s->linesize[1], width2, leftu);
leftv= sub_left_prediction(s->temp[2], s->picture[2]+s->linesize[2], width2, leftv);
encode_422_bitstream(s, width);
y++;
y++; cy++;
}
lefty= sub_left_prediction(s->temp[0], s->picture[0]+fake_ystride, 4, lefty);
......@@ -865,7 +926,7 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
leftv= sub_left_prediction(s->temp[2], s->picture[2]+fake_ystride, 2, leftv);
encode_422_bitstream(s, 4);
lefttopy= s->picture[0][3];
lefttopu= s->picture[1][1];
lefttopv= s->picture[2][1];
......@@ -873,14 +934,23 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
sub_median_prediction(s->temp[1], s->picture[1]+2, s->picture[1] + fake_ustride+2, width2-2, &leftu, &lefttopu);
sub_median_prediction(s->temp[2], s->picture[2]+2, s->picture[2] + fake_vstride+2, width2-2, &leftv, &lefttopv);
encode_422_bitstream(s, width-4);
y++;
y++; cy++;
for(; y<height; y++){
for(; y<height; y++,cy++){
uint8_t *ydst, *udst, *vdst;
if(s->bitstream_bpp==12){
while(2*cy > y){
ydst= s->picture[0] + s->linesize[0]*y;
sub_median_prediction(s->temp[0], ydst - fake_ystride, ydst, width , &lefty, &lefttopy);
encode_gray_bitstream(s, width);
y++;
}
if(y>=height) break;
}
ydst= s->picture[0] + s->linesize[0]*y;
udst= s->picture[1] + s->linesize[1]*y;
vdst= s->picture[2] + s->linesize[2]*y;
udst= s->picture[1] + s->linesize[1]*cy;
vdst= s->picture[2] + s->linesize[2]*cy;
sub_median_prediction(s->temp[0], ydst - fake_ystride, ydst, width , &lefty, &lefttopy);
sub_median_prediction(s->temp[1], udst - fake_ustride, udst, width2, &leftu, &lefttopu);
......@@ -889,14 +959,30 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
encode_422_bitstream(s, width);
}
}else{
for(y=1; y<height; y++){
for(cy=y=1; y<height; y++,cy++){
uint8_t *ydst, *udst, *vdst;
/* encode a luma only line & y++ */
if(s->bitstream_bpp==12){
ydst= s->picture[0] + s->linesize[0]*y;
if(s->predictor == PLANE && s->interlaced < y){
s->dsp.diff_bytes(s->temp[0], ydst, ydst - fake_ystride, width);
lefty= sub_left_prediction(s->temp[0], s->temp[0], width , lefty);
}else{
lefty= sub_left_prediction(s->temp[0], ydst, width , lefty);
}
encode_gray_bitstream(s, width);
y++;
if(y>=height) break;
}
ydst= s->picture[0] + s->linesize[0]*y;
udst= s->picture[1] + s->linesize[1]*y;
vdst= s->picture[2] + s->linesize[2]*y;
udst= s->picture[1] + s->linesize[1]*cy;
vdst= s->picture[2] + s->linesize[2]*cy;
if(s->predictor == PLANE && s->interlaced < y){
if(s->predictor == PLANE && s->interlaced < cy){
s->dsp.diff_bytes(s->temp[0], ydst, ydst - fake_ystride, width);
s->dsp.diff_bytes(s->temp[1], udst, udst - fake_ustride, width2);
s->dsp.diff_bytes(s->temp[2], vdst, vdst - fake_vstride, width2);
......@@ -933,6 +1019,7 @@ static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size,
p++;
}
}else{
flush_put_bits(&s->pb);
bswap_buf((uint32_t*)buf, (uint32_t*)buf, size);
}
......
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