Add a quality factor packet side data

This is necessary to preserve the quality information currently exported
with coded_frame. Add the new side data to every encoder that needs it,
and use it in avconv.

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 84e9dc8c58..ceced188a9 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -1589,6 +1589,7 @@ int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
 
     /* output? */
     if (s->new_picture.f->data[0]) {
+        uint8_t *sd;
         if (!pkt->data &&
             (ret = ff_alloc_packet(pkt, s->mb_width*s->mb_height*MAX_MB_BYTES)) < 0)
             return ret;
@@ -1630,6 +1631,12 @@ vbv_retry:
 
         frame_end(s);
 
+        sd = av_packet_new_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
+                                     sizeof(int));
+        if (!sd)
+            return AVERROR(ENOMEM);
+        *(int *)sd = s->current_picture.f->quality;
+
         if (CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG)
             ff_mjpeg_encode_picture_trailer(&s->pb, s->header_bits);