lavc/mdct_template: use lrint instead of floor hack

[ffmpeg] / libavformat / mxfdec.c

diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c
index 429f46a7e9ca4bb5f303ac0d1f61ddad3ce877e4..f4222fcab5430c34b90f120ec104ead8ae4d3566 100644 (file)
--- a/libavformat/mxfdec.c
+++ b/libavformat/mxfdec.c
@@ -1145,6 +1145,15 @@ static const MXFCodecUL mxf_intra_only_picture_essence_coding_uls[] = {
     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },  0,       AV_CODEC_ID_NONE },
 };
 
+/* actual coded width for AVC-Intra to allow selecting correct SPS/PPS */
+static const MXFCodecUL mxf_intra_only_picture_coded_width[] = {
+    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 16, 1440 },
+    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 16, 1440 },
+    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 16, 1440 },
+    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 16, 1440 },
+    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },  0,    0 },
+};
+
 static const MXFCodecUL mxf_sound_essence_container_uls[] = {
     // sound essence container uls
     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, 14, AV_CODEC_ID_PCM_S16LE }, /* BWF Frame wrapped */
@@ -2128,6 +2137,10 @@ static int mxf_parse_structural_metadata(MXFContext *mxf)
                 memcpy(st->codec->extradata, descriptor->extradata, descriptor->extradata_size);
             }
         } else if (st->codec->codec_id == AV_CODEC_ID_H264) {
+            int coded_width = mxf_get_codec_ul(mxf_intra_only_picture_coded_width,
+                                               &descriptor->essence_codec_ul)->id;
+            if (coded_width)
+                st->codec->width = coded_width;
             ret = ff_generate_avci_extradata(st);
             if (ret < 0)
                 return ret;
@@ -2266,7 +2279,6 @@ static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = {
     { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x42,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Generic Sound */
     { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* CDCI */
     { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* RGBA */
-    { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG 2 Video */
     { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* Wave */
     { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* AES3 */
     { { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_generic_descriptor, sizeof(MXFDescriptor), Descriptor }, /* MPEG2VideoDescriptor */
@@ -3181,6 +3193,16 @@ static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_ti
         sample_time = FFMAX(sample_time, 0);
 
         if (t->fake_index) {
+            /* The first frames may not be keyframes in presentation order, so
+             * we have to advance the target to be able to find the first
+             * keyframe backwards... */
+            if (!(flags & AVSEEK_FLAG_ANY) &&
+                (flags & AVSEEK_FLAG_BACKWARD) &&
+                t->ptses[0] != AV_NOPTS_VALUE &&
+                sample_time < t->ptses[0] &&
+                (t->fake_index[t->ptses[0]].flags & AVINDEX_KEYFRAME))
+                sample_time = t->ptses[0];
+
             /* behave as if we have a proper index */
             if ((sample_time = ff_index_search_timestamp(t->fake_index, t->nb_ptses, sample_time, flags)) < 0)
                 return sample_time;