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export mbskip_table for direct rendering

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add hurry_up support

Originally committed as revision 424 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2002-04-27 13:12:57 +00:00
parent d7e9533aa0
commit 2417652e9f
5 changed files with 19 additions and 2 deletions
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9
libavcodec/avcodec.h
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@ -5,8 +5,8 @@
#define LIBAVCODEC_VERSION_INT 0x000406
#define LIBAVCODEC_VERSION "0.4.6"
#define LIBAVCODEC_BUILD 4603
#define LIBAVCODEC_BUILD_STR "4603"
#define LIBAVCODEC_BUILD 4604
#define LIBAVCODEC_BUILD_STR "4604"
enum CodecID {
CODEC_ID_NONE,
@ -141,6 +141,8 @@ typedef struct AVCodecContext {
int key_frame; /* true if the previous compressed frame was
a key frame (intra, or seekable) */
int delay; /* number of frames the decoded output will be delayed relative to the encoded input */
uint8_t *mbskip_table; /* =1 if MB didnt change, is only valid for I/P frames
stride= mb_width = (width+15)>>4 */
/* encoding parameters */
int quality; /* quality of the previous encoded frame
@ -157,6 +159,9 @@ typedef struct AVCodecContext {
int rc_strategy;
int b_frame_strategy;
int hurry_up; /* when set to 1 during decoding, b frames will be skiped
when set to 2 idct/dequant will be skipped too */
struct AVCodec *codec;
void *priv_data;

5
libavcodec/h263dec.c
View File

@ -74,6 +74,7 @@ static int h263_decode_init(AVCodecContext *avctx)
return -1;
}
s->codec_id= avctx->codec->id;
avctx->mbskip_table= s->mbskip_table;
/* for h263, we allocate the images after having read the header */
if (avctx->codec->id != CODEC_ID_H263 && avctx->codec->id != CODEC_ID_MPEG4)
@ -108,6 +109,8 @@ static int h263_decode_frame(AVCodecContext *avctx,
printf("*****frame %d size=%d\n", avctx->frame_number, buf_size);
printf("bytes=%x %x %x %x\n", buf[0], buf[1], buf[2], buf[3]);
#endif
s->hurry_up= avctx->hurry_up;
/* no supplementary picture */
if (buf_size == 0) {
@ -154,6 +157,8 @@ static int h263_decode_frame(AVCodecContext *avctx,
return -1;
/* skip b frames if we dont have reference frames */
if(s->num_available_buffers<2 && s->pict_type==B_TYPE) return 0;
/* skip b frames if we are in a hurry */
if(s->hurry_up && s->pict_type==B_TYPE) return 0;
MPV_frame_start(s);

1
libavcodec/mpeg12.c
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@ -1187,6 +1187,7 @@ static int mpeg_decode_init(AVCodecContext *avctx)
s->mpeg_enc_ctx.picture_number = 0;
s->repeat_field = 0;
s->mpeg_enc_ctx.codec_id= avctx->codec->id;
avctx->mbskip_table= s->mpeg_enc_ctx.mbskip_table;
return 0;
}

3
libavcodec/mpegvideo.c
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@ -1145,6 +1145,9 @@ static inline void put_dct(MpegEncContext *s,
static inline void add_dct(MpegEncContext *s,
DCTELEM *block, int i, UINT8 *dest, int line_size)
{
/* skip dequant / idct if we are really late ;) */
if(s->hurry_up>1) return;
if (s->block_last_index[i] >= 0) {
if (!s->mpeg2)
if(s->encoding || (!s->h263_msmpeg4))

3
libavcodec/mpegvideo.h
View File

@ -196,6 +196,9 @@ typedef struct MpegEncContext {
int no_rounding; /* apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
for b-frames rounding mode is allways 0 */
int hurry_up; /* when set to 1 during decoding, b frames will be skiped
when set to 2 idct/dequant will be skipped too */
/* macroblock layer */
int mb_x, mb_y;
int mb_incr;