[FFmpeg-cvslog] mpeg12enc: add drop_frame_timecode private option.

[Anton Khirnov]

ffmpeg | branch: master | Anton Khirnov <anton at khirnov.net> | Sat Aug 27 08:34:05 2011 +0200| [2c5e1efc093084f1cb4e55b8c06c267801828965] | committer: Anton Khirnov

mpeg12enc: add drop_frame_timecode private option.

Deprecate CODEC_FLAG2_DROP_FRAME_TIMECODE

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2c5e1efc093084f1cb4e55b8c06c267801828965
---

 libavcodec/avcodec.h   |    2 ++
 libavcodec/mpeg12enc.c |   12 +++++++++---
 libavcodec/mpegvideo.h |    1 +
 libavcodec/options.c   |    2 ++
 4 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 408438e..5791911 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -620,7 +620,9 @@ typedef struct RcOverride{
 #define CODEC_FLAG2_INTRA_VLC     0x00000800 ///< Use MPEG-2 intra VLC table.
 #endif
 #define CODEC_FLAG2_MEMC_ONLY     0x00001000 ///< Only do ME/MC (I frames -> ref, P frame -> ME+MC).
+#if FF_API_MPEGVIDEO_GLOBAL_OPTS
 #define CODEC_FLAG2_DROP_FRAME_TIMECODE 0x00002000 ///< timecode is in drop frame format.
+#endif
 #define CODEC_FLAG2_SKIP_RD       0x00004000 ///< RD optimal MB level residual skipping
 #define CODEC_FLAG2_CHUNKS        0x00008000 ///< Input bitstream might be truncated at a packet boundaries instead of only at frame boundaries.
 #define CODEC_FLAG2_NON_LINEAR_QUANT 0x00010000 ///< Use MPEG-2 nonlinear quantizer.
diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c
index eca57d0..dd43321 100644
--- a/libavcodec/mpeg12enc.c
+++ b/libavcodec/mpeg12enc.c
@@ -142,6 +142,11 @@ static av_cold int encode_init(AVCodecContext *avctx)
     if(MPV_encode_init(avctx) < 0)
         return -1;
 
+#if FF_API_MPEGVIDEO_GLOBAL_OPTS
+    if (avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE)
+        s->drop_frame_timecode = 1;
+#endif
+
     if(find_frame_rate_index(s) < 0){
         if(s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL){
             av_log(avctx, AV_LOG_ERROR, "MPEG1/2 does not support %d/%d fps\n", avctx->time_base.den, avctx->time_base.num);
@@ -174,7 +179,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
         }
     }
 
-    if((avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) && s->frame_rate_index != 4){
+    if (s->drop_frame_timecode && s->frame_rate_index != 4) {
         av_log(avctx, AV_LOG_ERROR, "Drop frame time code only allowed with 1001/30000 fps\n");
         return -1;
     }
@@ -285,14 +290,14 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s)
             }
 
             put_header(s, GOP_START_CODE);
-            put_bits(&s->pb, 1, !!(s->avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE)); /* drop frame flag */
+            put_bits(&s->pb, 1, s->drop_frame_timecode); /* drop frame flag */
             /* time code : we must convert from the real frame rate to a
                fake mpeg frame rate in case of low frame rate */
             fps = (framerate.num + framerate.den/2)/ framerate.den;
             time_code = s->current_picture_ptr->f.coded_picture_number + s->avctx->timecode_frame_start;
 
             s->gop_picture_number = s->current_picture_ptr->f.coded_picture_number;
-            if (s->avctx->flags2 & CODEC_FLAG2_DROP_FRAME_TIMECODE) {
+            if (s->drop_frame_timecode) {
                 /* only works for NTSC 29.97 */
                 int d = time_code / 17982;
                 int m = time_code % 17982;
@@ -931,6 +936,7 @@ static void mpeg1_encode_block(MpegEncContext *s,
 #define VE AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
 static const AVOption options[] = {
     { "intra_vlc",           "Use MPEG-2 intra VLC table.",       OFFSET(intra_vlc_format),    FF_OPT_TYPE_INT, { 0 }, 0, 1, VE },
+    { "drop_frame_timecode", "Timecode is in drop frame format.", OFFSET(drop_frame_timecode), FF_OPT_TYPE_INT, { 0 }, 0, 1, VE},
     { NULL },
 };
 
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index 0790b07..34069c6 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -644,6 +644,7 @@ typedef struct MpegEncContext {
     int interlaced_dct;
     int first_slice;
     int first_field;         ///< is 1 for the first field of a field picture 0 otherwise
+    int drop_frame_timecode; ///< timecode is in drop frame format.
 
     /* RTP specific */
     int rtp_mode;
diff --git a/libavcodec/options.c b/libavcodec/options.c
index 19a4133..5231cb4 100644
--- a/libavcodec/options.c
+++ b/libavcodec/options.c
@@ -421,7 +421,9 @@ static const AVOption options[]={
 {"max_partition_order", "deprecated, use flac-specific options", OFFSET(max_partition_order), FF_OPT_TYPE_INT, {.dbl = -1 }, INT_MIN, INT_MAX, A|E},
 #endif
 {"timecode_frame_start", "GOP timecode frame start number, in non drop frame format", OFFSET(timecode_frame_start), FF_OPT_TYPE_INT64, {.dbl = 0 }, 0, INT64_MAX, V|E},
+#if FF_API_MPEGVIDEO_GLOBAL_OPTS
 {"drop_frame_timecode", NULL, 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_DROP_FRAME_TIMECODE }, INT_MIN, INT_MAX, V|E, "flags2"},
+#endif
 {"non_linear_q", "use non linear quantizer", 0, FF_OPT_TYPE_CONST, {.dbl = CODEC_FLAG2_NON_LINEAR_QUANT }, INT_MIN, INT_MAX, V|E, "flags2"},
 #if FF_API_REQUEST_CHANNELS
 {"request_channels", "set desired number of audio channels", OFFSET(request_channels), FF_OPT_TYPE_INT, {.dbl = DEFAULT }, 0, INT_MAX, A|D},