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Code Issues Releases Activity

lavc: deprecate AVCodecContext.sub_id.

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In most places where it's used, it's as a pointless write-only field.

Only rv10 decoder actually reads from it, but it stores some internal
version info in it. There is no reason for it to be in a public field.
This commit is contained in:
Anton Khirnov 2012-02-27 18:52:13 +01:00
parent 87392b1fd5
commit 02beb9826b
9 changed files with 32 additions and 32 deletions
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11
libavcodec/avcodec.h
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@ -1228,15 +1228,12 @@ typedef struct AVCodecContext {
*/
unsigned int stream_codec_tag;
#if FF_API_SUB_ID
/**
* Some codecs need additional format info. It is stored here.
* If any muxer uses this then ALL demuxers/parsers AND encoders for the
* specific codec MUST set it correctly otherwise stream copy breaks.
* In general use of this field by muxers is not recommended.
* - encoding: Set by libavcodec.
* - decoding: Set by libavcodec. (FIXME: Is this OK?)
* @deprecated this field is unused
*/
int sub_id;
attribute_deprecated int sub_id;
#endif
void *priv_data;

4
libavcodec/mpeg12.c
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@ -1237,7 +1237,6 @@ static int mpeg_decode_postinit(AVCodecContext *avctx)
* that behave like P-frames. */
avctx->has_b_frames = !s->low_delay;
assert((avctx->sub_id == 1) == (avctx->codec_id == CODEC_ID_MPEG1VIDEO));
if (avctx->codec_id == CODEC_ID_MPEG1VIDEO) {
//MPEG-1 fps
avctx->time_base.den = avpriv_frame_rate_tab[s->frame_rate_index].num;
@ -1382,7 +1381,6 @@ static void mpeg_decode_sequence_extension(Mpeg1Context *s1)
av_dlog(s->avctx, "sequence extension\n");
s->codec_id = s->avctx->codec_id = CODEC_ID_MPEG2VIDEO;
s->avctx->sub_id = 2; /* indicates MPEG-2 found */
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_DEBUG, "profile: %d, level: %d vbv buffer: %d, bitrate:%d\n",
@ -2000,7 +1998,6 @@ static int mpeg1_decode_sequence(AVCodecContext *avctx,
s->frame_pred_frame_dct = 1;
s->chroma_format = 1;
s->codec_id = s->avctx->codec_id = CODEC_ID_MPEG1VIDEO;
avctx->sub_id = 1; /* indicates MPEG-1 */
s->out_format = FMT_MPEG1;
s->swap_uv = 0; // AFAIK VCR2 does not have SEQ_HEADER
if (s->flags & CODEC_FLAG_LOW_DELAY)
@ -2060,7 +2057,6 @@ static int vcr2_init_sequence(AVCodecContext *avctx)
s->frame_pred_frame_dct = 1;
s->chroma_format = 1;
s->codec_id = s->avctx->codec_id = CODEC_ID_MPEG2VIDEO;
avctx->sub_id = 2; /* indicates MPEG-2 */
s1->save_width = s->width;
s1->save_height = s->height;
s1->save_progressive_seq = s->progressive_sequence;

2
libavcodec/mpegaudiodec.c
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@ -1660,7 +1660,6 @@ static int decode_frame(AVCodecContext * avctx, void *data, int *got_frame_ptr,
avctx->channel_layout = s->nb_channels == 1 ? AV_CH_LAYOUT_MONO : AV_CH_LAYOUT_STEREO;
if (!avctx->bit_rate)
avctx->bit_rate = s->bit_rate;
avctx->sub_id = s->layer;
if (s->frame_size <= 0 || s->frame_size > buf_size) {
av_log(avctx, AV_LOG_ERROR, "incomplete frame\n");
@ -1733,7 +1732,6 @@ static int decode_frame_adu(AVCodecContext *avctx, void *data,
avctx->channels = s->nb_channels;
if (!avctx->bit_rate)
avctx->bit_rate = s->bit_rate;
avctx->sub_id = s->layer;
s->frame_size = len;

1
libavcodec/mpegaudiodecheader.c
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@ -142,6 +142,5 @@ int avpriv_mpa_decode_header(AVCodecContext *avctx, uint32_t head, int *sample_r
*sample_rate = s->sample_rate;
*channels = s->nb_channels;
*bit_rate = s->bit_rate;
avctx->sub_id = s->layer;
return s->frame_size;
}

2
libavcodec/mpegvideo_parser.c
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@ -69,7 +69,6 @@ static void mpegvideo_extract_headers(AVCodecParserContext *s,
pc->frame_rate.num = avctx->time_base.num = avpriv_frame_rate_tab[frame_rate_index].den;
avctx->bit_rate = ((buf[4]<<10) | (buf[5]<<2) | (buf[6]>>6))*400;
avctx->codec_id = CODEC_ID_MPEG1VIDEO;
avctx->sub_id = 1;
}
break;
case EXT_START_CODE:
@ -94,7 +93,6 @@ static void mpegvideo_extract_headers(AVCodecParserContext *s,
avctx->time_base.den = pc->frame_rate.den * (frame_rate_ext_n + 1) * 2;
avctx->time_base.num = pc->frame_rate.num * (frame_rate_ext_d + 1);
avctx->codec_id = CODEC_ID_MPEG2VIDEO;
avctx->sub_id = 2; /* forces MPEG2 */
}
break;
case 0x8: /* picture coding extension */

2
libavcodec/options.c
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@ -109,7 +109,9 @@ static const AVOption options[]={
#endif
{"noout", "skip bitstream encoding", 0, AV_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_NO_OUTPUT }, INT_MIN, INT_MAX, V|E, "flags2"},
{"local_header", "place global headers at every keyframe instead of in extradata", 0, AV_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_LOCAL_HEADER }, INT_MIN, INT_MAX, V|E, "flags2"},
#if FF_API_SUB_ID
{"sub_id", NULL, OFFSET(sub_id), AV_OPT_TYPE_INT, {.dbl = DEFAULT }, INT_MIN, INT_MAX},
#endif
{"me_method", "set motion estimation method", OFFSET(me_method), AV_OPT_TYPE_INT, {.dbl = ME_EPZS }, INT_MIN, INT_MAX, V|E, "me_method"},
{"zero", "zero motion estimation (fastest)", 0, AV_OPT_TYPE_CONST, {.dbl = ME_ZERO }, INT_MIN, INT_MAX, V|E, "me_method" },
{"full", "full motion estimation (slowest)", 0, AV_OPT_TYPE_CONST, {.dbl = ME_FULL }, INT_MIN, INT_MAX, V|E, "me_method" },

1
libavcodec/pthread.c
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@ -402,7 +402,6 @@ static int update_context_from_thread(AVCodecContext *dst, AVCodecContext *src,
int err = 0;
if (dst != src) {
dst->sub_id = src->sub_id;
dst->time_base = src->time_base;
dst->width = src->width;
dst->height = src->height;

38
libavcodec/rv10.c
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@ -40,6 +40,11 @@
#define DC_VLC_BITS 14 //FIXME find a better solution
typedef struct RVDecContext {
MpegEncContext m;
int sub_id;
} RVDecContext;
static const uint16_t rv_lum_code[256] =
{
0x3e7f, 0x0f00, 0x0f01, 0x0f02, 0x0f03, 0x0f04, 0x0f05, 0x0f06,
@ -293,8 +298,9 @@ static int rv10_decode_picture_header(MpegEncContext *s)
return mb_count;
}
static int rv20_decode_picture_header(MpegEncContext *s)
static int rv20_decode_picture_header(RVDecContext *rv)
{
MpegEncContext *s = &rv->m;
int seq, mb_pos, i;
int rpr_bits;
@ -325,10 +331,10 @@ static int rv20_decode_picture_header(MpegEncContext *s)
return -1;
}
if(RV_GET_MINOR_VER(s->avctx->sub_id) >= 2)
if(RV_GET_MINOR_VER(rv->sub_id) >= 2)
s->loop_filter = get_bits1(&s->gb);
if(RV_GET_MINOR_VER(s->avctx->sub_id) <= 1)
if(RV_GET_MINOR_VER(rv->sub_id) <= 1)
seq = get_bits(&s->gb, 8) << 7;
else
seq = get_bits(&s->gb, 13) << 2;
@ -393,7 +399,7 @@ static int rv20_decode_picture_header(MpegEncContext *s)
av_log(s->avctx, AV_LOG_DEBUG, "\n");*/
s->no_rounding= get_bits1(&s->gb);
if(RV_GET_MINOR_VER(s->avctx->sub_id) <= 1 && s->pict_type == AV_PICTURE_TYPE_B)
if(RV_GET_MINOR_VER(rv->sub_id) <= 1 && s->pict_type == AV_PICTURE_TYPE_B)
skip_bits(&s->gb, 5); // binary decoder reads 3+2 bits here but they don't seem to be used
s->f_code = 1;
@ -418,7 +424,8 @@ av_log(s->avctx, AV_LOG_DEBUG, "\n");*/
static av_cold int rv10_decode_init(AVCodecContext *avctx)
{
MpegEncContext *s = avctx->priv_data;
RVDecContext *rv = avctx->priv_data;
MpegEncContext *s = &rv->m;
static int done=0;
int major_ver, minor_ver, micro_ver;
@ -438,11 +445,11 @@ static av_cold int rv10_decode_init(AVCodecContext *avctx)
s->orig_height= s->height = avctx->coded_height;
s->h263_long_vectors= ((uint8_t*)avctx->extradata)[3] & 1;
avctx->sub_id= AV_RB32((uint8_t*)avctx->extradata + 4);
rv->sub_id = AV_RB32((uint8_t*)avctx->extradata + 4);
major_ver = RV_GET_MAJOR_VER(avctx->sub_id);
minor_ver = RV_GET_MINOR_VER(avctx->sub_id);
micro_ver = RV_GET_MICRO_VER(avctx->sub_id);
major_ver = RV_GET_MAJOR_VER(rv->sub_id);
minor_ver = RV_GET_MINOR_VER(rv->sub_id);
micro_ver = RV_GET_MICRO_VER(rv->sub_id);
s->low_delay = 1;
switch (major_ver) {
@ -457,13 +464,13 @@ static av_cold int rv10_decode_init(AVCodecContext *avctx)
}
break;
default:
av_log(s->avctx, AV_LOG_ERROR, "unknown header %X\n", avctx->sub_id);
av_log(s->avctx, AV_LOG_ERROR, "unknown header %X\n", rv->sub_id);
av_log_missing_feature(avctx, "RV1/2 version", 1);
return AVERROR_PATCHWELCOME;
}
if(avctx->debug & FF_DEBUG_PICT_INFO){
av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%X\n", avctx->sub_id, avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1);
av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%X\n", rv->sub_id, avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1);
}
avctx->pix_fmt = PIX_FMT_YUV420P;
@ -498,7 +505,8 @@ static av_cold int rv10_decode_end(AVCodecContext *avctx)
static int rv10_decode_packet(AVCodecContext *avctx,
const uint8_t *buf, int buf_size, int buf_size2)
{
MpegEncContext *s = avctx->priv_data;
RVDecContext *rv = avctx->priv_data;
MpegEncContext *s = &rv->m;
int mb_count, mb_pos, left, start_mb_x, active_bits_size;
active_bits_size = buf_size * 8;
@ -506,7 +514,7 @@ static int rv10_decode_packet(AVCodecContext *avctx,
if(s->codec_id ==CODEC_ID_RV10)
mb_count = rv10_decode_picture_header(s);
else
mb_count = rv20_decode_picture_header(s);
mb_count = rv20_decode_picture_header(rv);
if (mb_count < 0) {
av_log(s->avctx, AV_LOG_ERROR, "HEADER ERROR\n");
return -1;
@ -714,7 +722,7 @@ AVCodec ff_rv10_decoder = {
.name = "rv10",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_RV10,
.priv_data_size = sizeof(MpegEncContext),
.priv_data_size = sizeof(RVDecContext),
.init = rv10_decode_init,
.close = rv10_decode_end,
.decode = rv10_decode_frame,
@ -728,7 +736,7 @@ AVCodec ff_rv20_decoder = {
.name = "rv20",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_RV20,
.priv_data_size = sizeof(MpegEncContext),
.priv_data_size = sizeof(RVDecContext),
.init = rv10_decode_init,
.close = rv10_decode_end,
.decode = rv10_decode_frame,

3
libavcodec/version.h
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@ -59,5 +59,8 @@
#ifndef FF_API_INTER_THRESHOLD
#define FF_API_INTER_THRESHOLD (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#ifndef FF_API_SUB_ID
#define FF_API_SUB_ID (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
#endif /* AVCODEC_VERSION_H */