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.
---
libavcodec/avcodec.h | 11 ++++-------
libavcodec/mpeg12.c | 4 ----
libavcodec/mpegaudiodec.c | 2 --
libavcodec/mpegaudiodecheader.c | 1 -
libavcodec/mpegvideo.h | 2 ++
libavcodec/mpegvideo_parser.c | 2 --
libavcodec/options.c | 2 ++
libavcodec/pthread.c | 1 -
libavcodec/rv10.c | 18 +++++++++---------
libavcodec/version.h | 3 +++
10 files changed, 20 insertions(+), 26 deletions(-)
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 5677c0b..0b77b95 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1209,15 +1209,12 @@ 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;
diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c
index 4b526eb..f87e617 100644
--- a/libavcodec/mpeg12.c
+++ b/libavcodec/mpeg12.c
@@ -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;
diff --git a/libavcodec/mpegaudiodec.c b/libavcodec/mpegaudiodec.c
index d82432c..c00c15f 100644
--- a/libavcodec/mpegaudiodec.c
+++ b/libavcodec/mpegaudiodec.c
@@ -1653,7 +1653,6 @@ 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");
@@ -1726,7 +1725,6 @@ 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;
diff --git a/libavcodec/mpegaudiodecheader.c b/libavcodec/mpegaudiodecheader.c
index dbd67ff..428137d 100644
--- a/libavcodec/mpegaudiodecheader.c
+++ b/libavcodec/mpegaudiodecheader.c
@@ -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;
}
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index 4ec4190..3521a12 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -691,6 +691,8 @@ typedef struct MpegEncContext {
void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
int mpv_flags; ///< flags set by private options
+
+ int rv10_id; ///< a version identifier used by the rv10 decoder
} MpegEncContext;
#define REBASE_PICTURE(pic, new_ctx, old_ctx) (pic ? \
diff --git a/libavcodec/mpegvideo_parser.c b/libavcodec/mpegvideo_parser.c
index f0b3b20..af4b6e4 100644
--- a/libavcodec/mpegvideo_parser.c
+++ b/libavcodec/mpegvideo_parser.c
@@ -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 */
diff --git a/libavcodec/options.c b/libavcodec/options.c
index 6b5b148..3567c3d 100644
--- a/libavcodec/options.c
+++ b/libavcodec/options.c
@@ -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" },
diff --git a/libavcodec/pthread.c b/libavcodec/pthread.c
index f17f34e..4a02823 100644
--- a/libavcodec/pthread.c
+++ b/libavcodec/pthread.c
@@ -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;
diff --git a/libavcodec/rv10.c b/libavcodec/rv10.c
index 75d529f..9d096da 100644
--- a/libavcodec/rv10.c
+++ b/libavcodec/rv10.c
@@ -325,10 +325,10 @@ 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(s->rv10_id) >= 2)
s->loop_filter = get_bits1(&s->gb);
- if(RV_GET_MINOR_VER(s->avctx->sub_id) <= 1)
+ if(RV_GET_MINOR_VER(s->rv10_id) <= 1)
seq = get_bits(&s->gb, 8) << 7;
else
seq = get_bits(&s->gb, 13) << 2;
@@ -393,7 +393,7 @@ 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(s->rv10_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;
@@ -438,11 +438,11 @@ 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);
+ s->rv10_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(s->rv10_id);
+ minor_ver = RV_GET_MINOR_VER(s->rv10_id);
+ micro_ver = RV_GET_MICRO_VER(s->rv10_id);
s->low_delay = 1;
switch (major_ver) {
@@ -457,13 +457,13 @@ 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", s->rv10_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", s->rv10_id,
avctx->extradata_size >= 4 ? ((uint32_t*)avctx->extradata)[0] : -1);
}
avctx->pix_fmt = PIX_FMT_YUV420P;
diff --git a/libavcodec/version.h b/libavcodec/version.h
index ffce895..386f287 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -53,5 +53,8 @@
#ifndef FF_API_MPV_GLOBAL_OPTS
#define FF_API_MPV_GLOBAL_OPTS (LIBAVCODEC_VERSION_MAJOR < 55)
#endif
+#ifndef FF_API_SUB_ID
+#define FF_API_SUB_ID (LIBAVCODEC_VERSION_MAJOR < 55)
+#endif
#endif /* AVCODEC_VERSION_H */
--
1.7.9
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