[FFmpeg-devel] [PATCH 13/19] lavc/mpegvideo_enc: handle frame durations and AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE

[Anton Khirnov <anton@khirnov.net>]

For delay-capable encoders, i.e. mpeg12 and mpeg4video. Generic code in
encode.c already handles this for all other mpegvideo encoders.
---
 libavcodec/mpeg12enc.c     | 6 ++++--
 libavcodec/mpeg4videoenc.c | 3 ++-
 libavcodec/mpegvideo_enc.c | 9 +++++++++
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/libavcodec/mpeg12enc.c b/libavcodec/mpeg12enc.c
index 3ad1cd84a1..ff3d737e2a 100644
--- a/libavcodec/mpeg12enc.c
+++ b/libavcodec/mpeg12enc.c
@@ -1246,7 +1246,8 @@ const FFCodec ff_mpeg1video_encoder = {
     .p.supported_framerates = ff_mpeg12_frame_rate_tab + 1,
     .p.pix_fmts           = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
                                                            AV_PIX_FMT_NONE },
-    .p.capabilities       = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
+    .p.capabilities       = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS |
+                            AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
     .caps_internal        = FF_CODEC_CAP_INIT_CLEANUP,
     .p.priv_class         = &mpeg1_class,
 };
@@ -1264,7 +1265,8 @@ const FFCodec ff_mpeg2video_encoder = {
     .p.pix_fmts           = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
                                                            AV_PIX_FMT_YUV422P,
                                                            AV_PIX_FMT_NONE },
-    .p.capabilities       = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
+    .p.capabilities       = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS |
+                            AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
     .caps_internal        = FF_CODEC_CAP_INIT_CLEANUP,
     .p.priv_class         = &mpeg2_class,
 };
diff --git a/libavcodec/mpeg4videoenc.c b/libavcodec/mpeg4videoenc.c
index a2a14afbd0..f7d48490f9 100644
--- a/libavcodec/mpeg4videoenc.c
+++ b/libavcodec/mpeg4videoenc.c
@@ -1403,7 +1403,8 @@ const FFCodec ff_mpeg4_encoder = {
     FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
     .close          = ff_mpv_encode_end,
     .p.pix_fmts     = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
-    .p.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS,
+    .p.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SLICE_THREADS |
+                      AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
     .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
     .p.priv_class   = &mpeg4enc_class,
 };
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 9b11c5c05a..e77d5bcd57 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -1952,6 +1952,7 @@ vbv_retry:
         s->total_bits     += s->frame_bits;
 
         pkt->pts = s->current_picture.f->pts;
+        pkt->duration = s->current_picture.f->duration;
         if (!s->low_delay && s->pict_type != AV_PICTURE_TYPE_B) {
             if (!s->current_picture.f->coded_picture_number)
                 pkt->dts = pkt->pts - s->dts_delta;
@@ -1960,6 +1961,14 @@ vbv_retry:
             s->reordered_pts = pkt->pts;
         } else
             pkt->dts = pkt->pts;
+
+        // the no-delay case is handled in generic code
+        if (avctx->codec->capabilities & AV_CODEC_CAP_DELAY) {
+            ret = ff_encode_reordered_opaque(avctx, pkt, s->current_picture.f);
+            if (ret < 0)
+                return ret;
+        }
+
         if (s->current_picture.f->key_frame)
             pkt->flags |= AV_PKT_FLAG_KEY;
         if (s->mb_info)
-- 
2.35.1

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