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Diffstat (limited to 'libavcodec/mlp_parser.c')
-rw-r--r--libavcodec/mlp_parser.c55
1 files changed, 32 insertions, 23 deletions
diff --git a/libavcodec/mlp_parser.c b/libavcodec/mlp_parser.c
index 8766bd0c1f..79552c6be2 100644
--- a/libavcodec/mlp_parser.c
+++ b/libavcodec/mlp_parser.c
@@ -2,20 +2,20 @@
* MLP parser
* Copyright (c) 2007 Ian Caulfield
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -44,28 +44,28 @@ static const uint8_t mlp_channels[32] = {
5, 6, 5, 5, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
-static const uint64_t mlp_layout[32] = {
+const uint64_t ff_mlp_layout[32] = {
AV_CH_LAYOUT_MONO,
AV_CH_LAYOUT_STEREO,
AV_CH_LAYOUT_2_1,
- AV_CH_LAYOUT_2_2,
+ AV_CH_LAYOUT_QUAD,
AV_CH_LAYOUT_STEREO|AV_CH_LOW_FREQUENCY,
AV_CH_LAYOUT_2_1|AV_CH_LOW_FREQUENCY,
- AV_CH_LAYOUT_2_2|AV_CH_LOW_FREQUENCY,
+ AV_CH_LAYOUT_QUAD|AV_CH_LOW_FREQUENCY,
AV_CH_LAYOUT_SURROUND,
AV_CH_LAYOUT_4POINT0,
- AV_CH_LAYOUT_5POINT0,
+ AV_CH_LAYOUT_5POINT0_BACK,
AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY,
AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY,
- AV_CH_LAYOUT_5POINT1,
+ AV_CH_LAYOUT_5POINT1_BACK,
AV_CH_LAYOUT_4POINT0,
- AV_CH_LAYOUT_5POINT0,
+ AV_CH_LAYOUT_5POINT0_BACK,
AV_CH_LAYOUT_SURROUND|AV_CH_LOW_FREQUENCY,
AV_CH_LAYOUT_4POINT0|AV_CH_LOW_FREQUENCY,
- AV_CH_LAYOUT_5POINT1,
- AV_CH_LAYOUT_2_2|AV_CH_LOW_FREQUENCY,
- AV_CH_LAYOUT_5POINT0,
- AV_CH_LAYOUT_5POINT1,
+ AV_CH_LAYOUT_5POINT1_BACK,
+ AV_CH_LAYOUT_QUAD|AV_CH_LOW_FREQUENCY,
+ AV_CH_LAYOUT_5POINT0_BACK,
+ AV_CH_LAYOUT_5POINT1_BACK,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
@@ -108,7 +108,7 @@ static int truehd_channels(int chanmap)
return channels;
}
-static uint64_t truehd_layout(int chanmap)
+uint64_t ff_truehd_layout(int chanmap)
{
int i;
uint64_t layout = 0;
@@ -130,7 +130,7 @@ int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb)
int ratebits, channel_arrangement;
uint16_t checksum;
- assert(get_bits_count(gb) == 0);
+ av_assert1(get_bits_count(gb) == 0);
if (gb->size_in_bits < 28 << 3) {
av_log(log, AV_LOG_ERROR, "packet too short, unable to read major sync\n");
@@ -158,9 +158,10 @@ int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb)
skip_bits(gb, 11);
+ mh->channel_arrangement=
channel_arrangement = get_bits(gb, 5);
mh->channels_mlp = mlp_channels[channel_arrangement];
- mh->channel_layout_mlp = mlp_layout[channel_arrangement];
+ mh->channel_layout_mlp = ff_mlp_layout[channel_arrangement];
} else if (mh->stream_type == 0xba) {
mh->group1_bits = 24; // TODO: Is this information actually conveyed anywhere?
mh->group2_bits = 0;
@@ -174,15 +175,16 @@ int ff_mlp_read_major_sync(void *log, MLPHeaderInfo *mh, GetBitContext *gb)
mh->channel_modifier_thd_stream0 = get_bits(gb, 2);
mh->channel_modifier_thd_stream1 = get_bits(gb, 2);
+ mh->channel_arrangement=
channel_arrangement = get_bits(gb, 5);
mh->channels_thd_stream1 = truehd_channels(channel_arrangement);
- mh->channel_layout_thd_stream1 = truehd_layout(channel_arrangement);
+ mh->channel_layout_thd_stream1 = ff_truehd_layout(channel_arrangement);
mh->channel_modifier_thd_stream2 = get_bits(gb, 2);
channel_arrangement = get_bits(gb, 13);
mh->channels_thd_stream2 = truehd_channels(channel_arrangement);
- mh->channel_layout_thd_stream2 = truehd_layout(channel_arrangement);
+ mh->channel_layout_thd_stream2 = ff_truehd_layout(channel_arrangement);
} else
return AVERROR_INVALIDDATA;
@@ -249,7 +251,8 @@ static int mlp_parse(AVCodecParserContext *s,
}
if (!mp->in_sync) {
- ff_combine_frame(&mp->pc, END_NOT_FOUND, &buf, &buf_size);
+ if (ff_combine_frame(&mp->pc, END_NOT_FOUND, &buf, &buf_size) != -1)
+ av_log(avctx, AV_LOG_WARNING, "ff_combine_frame failed\n");
return buf_size;
}
@@ -267,13 +270,17 @@ static int mlp_parse(AVCodecParserContext *s,
}
if (mp->pc.index + buf_size < 2) {
- ff_combine_frame(&mp->pc, END_NOT_FOUND, &buf, &buf_size);
+ if (ff_combine_frame(&mp->pc, END_NOT_FOUND, &buf, &buf_size) != -1)
+ av_log(avctx, AV_LOG_WARNING, "ff_combine_frame failed\n");
return buf_size;
}
mp->bytes_left = ((mp->pc.index > 0 ? mp->pc.buffer[0] : buf[0]) << 8)
| (mp->pc.index > 1 ? mp->pc.buffer[1] : buf[1-mp->pc.index]);
mp->bytes_left = (mp->bytes_left & 0xfff) * 2;
+ if (mp->bytes_left <= 0) { // prevent infinite loop
+ goto lost_sync;
+ }
mp->bytes_left -= mp->pc.index;
}
@@ -324,6 +331,7 @@ static int mlp_parse(AVCodecParserContext *s,
avctx->sample_rate = mh.group1_samplerate;
s->duration = mh.access_unit_size;
+ if(!avctx->channels || !avctx->channel_layout) {
if (mh.stream_type == 0xbb) {
/* MLP stream */
#if FF_API_REQUEST_CHANNELS
@@ -332,8 +340,8 @@ FF_DISABLE_DEPRECATION_WARNINGS
mh.num_substreams > 1) {
avctx->channels = 2;
avctx->channel_layout = AV_CH_LAYOUT_STEREO;
- } else
FF_ENABLE_DEPRECATION_WARNINGS
+ } else
#endif
if (avctx->request_channel_layout == AV_CH_LAYOUT_STEREO &&
mh.num_substreams > 1) {
@@ -355,8 +363,8 @@ FF_DISABLE_DEPRECATION_WARNINGS
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
+ } else
#endif
if (avctx->request_channel_layout == AV_CH_LAYOUT_STEREO &&
mh.num_substreams > 1) {
@@ -371,6 +379,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
avctx->channel_layout = mh.channel_layout_thd_stream2;
}
}
+ }
if (!mh.is_vbr) /* Stream is CBR */
avctx->bit_rate = mh.peak_bitrate;
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-29 23:10:19 +0000