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Code Issues Releases Activity

- repeat_pict meaning changed, now it signals the extra delay for the

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decoded frame.
- extra_delay = (repeat_pict / 2) * (1/fps)

Originally committed as revision 496 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Juanjo 2002-05-14 19:56:42 +00:00
parent c02dbee162
commit e0a3d744a0
2 changed files with 32 additions and 12 deletions
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9
libavcodec/avcodec.h
View File

@ -5,8 +5,8 @@
#define LIBAVCODEC_VERSION_INT 0x000406
#define LIBAVCODEC_VERSION "0.4.6"
#define LIBAVCODEC_BUILD 4608
#define LIBAVCODEC_BUILD_STR "4608"
#define LIBAVCODEC_BUILD 4609
#define LIBAVCODEC_BUILD_STR "4609"
enum CodecID {
CODEC_ID_NONE,
@ -130,8 +130,9 @@ typedef struct AVCodecContext {
#define FF_ASPECT_16_9_525 5
int gop_size; /* 0 = intra only */
enum PixelFormat pix_fmt; /* pixel format, see PIX_FMT_xxx */
int repeat_pict; /* set this to 1 if you want the decoder
to repeat frames for 3:2 pulldown (MPEG-2) */
int repeat_pict; /* when decoding, this signal how much the picture */
/* must be delayed. */
/* extra_delay = (repeat_pict / 2) * (1/fps) */
/* if non NULL, 'draw_horiz_band' is called by the libavcodec
decoder to draw an horizontal band. It improve cache usage. Not
all codecs can do that. You must check the codec capabilities

35
libavcodec/mpeg12.c
View File

@ -1338,6 +1338,8 @@ static void mpeg_decode_picture_coding_extension(MpegEncContext *s)
/* composite display not parsed */
dprintf("intra_dc_precision=%d\n", s->intra_dc_precision);
dprintf("picture_structure=%d\n", s->picture_structure);
dprintf("top field first=%d\n", s->top_field_first);
dprintf("repeat first field=%d\n", s->repeat_first_field);
dprintf("conceal=%d\n", s->concealment_motion_vectors);
dprintf("intra_vlc_format=%d\n", s->intra_vlc_format);
dprintf("alternate_scan=%d\n", s->alternate_scan);
@ -1587,15 +1589,18 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
buf_ptr = buf;
buf_end = buf + buf_size;
if (s->repeat_field % 2 == 1 && avctx->repeat_pict) {
#if 0
if (s->repeat_field % 2 == 1) {
s->repeat_field++;
//fprintf(stderr,"\nRepeating last frame: %d -> %d! pict: %d %d", avctx->frame_number-1, avctx->frame_number,
// s2->picture_number, s->repeat_field);
*data_size = sizeof(AVPicture);
goto the_end;
// s2->picture_number, s->repeat_field);
if (avctx->flags & CODEC_FLAG_REPEAT_FIELD) {
*data_size = sizeof(AVPicture);
goto the_end;
}
}
#endif
while (buf_ptr < buf_end) {
buf_start = buf_ptr;
/* find start next code */
@ -1645,13 +1650,27 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
if (ret == 1) {
/* got a picture: exit */
/* first check if we must repeat the frame */
avctx->repeat_pict = 0;
#if 0
if (s2->progressive_frame && s2->repeat_first_field) {
//fprintf(stderr,"\nRepeat this frame: %d! pict: %d",avctx->frame_number,s2->picture_number);
s2->repeat_first_field = 0;
s2->progressive_frame = 0;
//s2->repeat_first_field = 0;
//s2->progressive_frame = 0;
if (++s->repeat_field > 2)
s->repeat_field = 0;
avctx->repeat_pict = 1;
}
#endif
if (s2->repeat_first_field) {
if (s2->progressive_sequence) {
if (s2->top_field_first)
avctx->repeat_pict = 4;
else
avctx->repeat_pict = 2;
} else if (s2->progressive_frame) {
avctx->repeat_pict = 1;
}
}
*data_size = sizeof(AVPicture);
goto the_end;
}