d3d11va: make av_d3d11va_alloc_context() available at all times

[ffmpeg] / libavcodec / mlp_parser.c

diff --git a/libavcodec/mlp_parser.c b/libavcodec/mlp_parser.c
index 075227f302dbbdb1ec9e0294006617bc2109f7fc..e8fb4f5f4d95a0ebb7dd0c07ee825fbffee966b0 100644 (file)
--- a/libavcodec/mlp_parser.c
+++ b/libavcodec/mlp_parser.c
@@ -119,6 +119,23 @@ static uint64_t truehd_layout(int chanmap)
     return layout;
 }
 
+static int ff_mlp_get_major_sync_size(const uint8_t * buf, int bufsize)
+{
+    int has_extension, extensions = 0;
+    int size = 28;
+    if (bufsize < 28)
+        return -1;
+
+    if (AV_RB32(buf) == 0xf8726fba) {
+        has_extension = buf[25] & 1;
+        if (has_extension) {
+            extensions = buf[26] >> 4;
+            size += 2 + extensions * 2;
+        }
+    }
+    return size;
+}
+
 /** Read a major sync info header - contains high level information about
  *  the stream - sample rate, channel arrangement etc. Most of this
  *  information is not actually necessary for decoding, only for playback.
@@ -127,18 +144,19 @@ static uint64_t truehd_layout(int chanmap)
 
 int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb)
 {
-    int ratebits, channel_arrangement;
+    int ratebits, channel_arrangement, header_size;
     uint16_t checksum;
 
     assert(get_bits_count(gb) == 0);
 
-    if (gb->size_in_bits < 28 << 3) {
+    header_size = ff_mlp_get_major_sync_size(gb->buffer, gb->size_in_bits >> 3);
+    if (header_size < 0 || gb->size_in_bits < header_size << 3) {
         av_log(log, AV_LOG_ERROR, "packet too short, unable to read major sync\n");
         return -1;
     }
 
-    checksum = ff_mlp_checksum16(gb->buffer, 26);
-    if (checksum != AV_RL16(gb->buffer+26)) {
+    checksum = ff_mlp_checksum16(gb->buffer, header_size - 2);
+    if (checksum != AV_RL16(gb->buffer+header_size-2)) {
         av_log(log, AV_LOG_ERROR, "major sync info header checksum error\n");
         return AVERROR_INVALIDDATA;
     }
@@ -147,6 +165,7 @@ int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb)
         return AVERROR_INVALIDDATA;
 
     mh->stream_type = get_bits(gb, 8);
+    mh->header_size = header_size;
 
     if (mh->stream_type == 0xbb) {
         mh->group1_bits = mlp_quants[get_bits(gb, 4)];
@@ -197,7 +216,7 @@ int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb)
 
     mh->num_substreams = get_bits(gb, 4);
 
-    skip_bits_long(gb, 4 + 11 * 8);
+    skip_bits_long(gb, 4 + (header_size - 17) * 8);
 
     return 0;
 }
@@ -326,15 +345,6 @@ static int mlp_parse(AVCodecParserContext *s,
 
         if (mh.stream_type == 0xbb) {
             /* MLP stream */
-#if FF_API_REQUEST_CHANNELS
-FF_DISABLE_DEPRECATION_WARNINGS
-            if (avctx->request_channels > 0 && avctx->request_channels <= 2 &&
-                mh.num_substreams > 1) {
-                avctx->channels       = 2;
-                avctx->channel_layout = AV_CH_LAYOUT_STEREO;
-            } else
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
             if (avctx->request_channel_layout &&
                 (avctx->request_channel_layout & AV_CH_LAYOUT_STEREO) ==
                 avctx->request_channel_layout &&
@@ -347,19 +357,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
             }
         } else { /* mh.stream_type == 0xba */
             /* TrueHD stream */
-#if FF_API_REQUEST_CHANNELS
-FF_DISABLE_DEPRECATION_WARNINGS
-            if (avctx->request_channels > 0 && avctx->request_channels <= 2 &&
-                mh.num_substreams > 1) {
-                avctx->channels       = 2;
-                avctx->channel_layout = AV_CH_LAYOUT_STEREO;
-            } else if (avctx->request_channels > 0 &&
-                       avctx->request_channels <= mh.channels_thd_stream1) {
-                avctx->channels       = mh.channels_thd_stream1;
-                avctx->channel_layout = mh.channel_layout_thd_stream1;
-            } else
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
                 if (avctx->request_channel_layout &&
                     (avctx->request_channel_layout & AV_CH_LAYOUT_STEREO) ==
                     avctx->request_channel_layout &&