[FFmpeg-devel] [PATCH 096/281] mov: convert to new channel layout API

[James Almer <jamrial@gmail.com>]

From: Vittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: James Almer <jamrial@gmail.com>
---
 libavformat/isom.c     |  5 +--
 libavformat/mov.c      | 80 +++++++++++++++++++++++++++---------------
 libavformat/mov_chan.c | 21 +++++++----
 libavformat/mov_chan.h |  3 +-
 libavformat/movenc.c   | 25 +++++++------
 5 files changed, 85 insertions(+), 49 deletions(-)

diff --git a/libavformat/isom.c b/libavformat/isom.c
index 015c82e1bb..e6569dfb68 100644
--- a/libavformat/isom.c
+++ b/libavformat/isom.c
@@ -360,7 +360,8 @@ int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext
                                                 st->codecpar->extradata_size, 1, fc);
             if (ret < 0)
                 return ret;
-            st->codecpar->channels = cfg.channels;
+            st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
+            st->codecpar->ch_layout.nb_channels = cfg.channels;
             if (cfg.object_type == 29 && cfg.sampling_index < 3) // old mp3on4
                 st->codecpar->sample_rate = ff_mpa_freq_tab[cfg.sampling_index];
             else if (cfg.ext_sample_rate)
@@ -368,7 +369,7 @@ int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext
             else
                 st->codecpar->sample_rate = cfg.sample_rate;
             av_log(fc, AV_LOG_TRACE, "mp4a config channels %d obj %d ext obj %d "
-                    "sample rate %d ext sample rate %d\n", st->codecpar->channels,
+                    "sample rate %d ext sample rate %d\n", cfg.channels,
                     cfg.object_type, cfg.ext_object_type,
                     cfg.sample_rate, cfg.ext_sample_rate);
             if (!(st->codecpar->codec_id = ff_codec_get_id(mp4_audio_types,
diff --git a/libavformat/mov.c b/libavformat/mov.c
index e401cd39b5..e307df8e3c 100644
--- a/libavformat/mov.c
+++ b/libavformat/mov.c
@@ -798,6 +798,7 @@ static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     AVStream *st;
     enum AVAudioServiceType *ast;
     int ac3info, acmod, lfeon, bsmod;
+    uint64_t mask;
 
     if (c->fc->nb_streams < 1)
         return 0;
@@ -812,12 +813,15 @@ static int mov_read_dac3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     bsmod = (ac3info >> 14) & 0x7;
     acmod = (ac3info >> 11) & 0x7;
     lfeon = (ac3info >> 10) & 0x1;
-    st->codecpar->channels = ((int[]){2,1,2,3,3,4,4,5})[acmod] + lfeon;
-    st->codecpar->channel_layout = ff_ac3_channel_layout_tab[acmod];
+
+    mask = ff_ac3_channel_layout_tab[acmod];
     if (lfeon)
-        st->codecpar->channel_layout |= AV_CH_LOW_FREQUENCY;
+        mask |= AV_CH_LOW_FREQUENCY;
+    av_channel_layout_uninit(&st->codecpar->ch_layout);
+    av_channel_layout_from_mask(&st->codecpar->ch_layout, mask);
+
     *ast = bsmod;
-    if (st->codecpar->channels > 1 && bsmod == 0x7)
+    if (st->codecpar->ch_layout.nb_channels > 1 && bsmod == 0x7)
         *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
 
     return 0;
@@ -828,6 +832,7 @@ static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     AVStream *st;
     enum AVAudioServiceType *ast;
     int eac3info, acmod, lfeon, bsmod;
+    uint64_t mask;
 
     if (c->fc->nb_streams < 1)
         return 0;
@@ -846,12 +851,15 @@ static int mov_read_dec3(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     bsmod = (eac3info >> 12) & 0x1f;
     acmod = (eac3info >>  9) & 0x7;
     lfeon = (eac3info >>  8) & 0x1;
-    st->codecpar->channel_layout = ff_ac3_channel_layout_tab[acmod];
+
+    mask = ff_ac3_channel_layout_tab[acmod];
     if (lfeon)
-        st->codecpar->channel_layout |= AV_CH_LOW_FREQUENCY;
-    st->codecpar->channels = av_get_channel_layout_nb_channels(st->codecpar->channel_layout);
+        mask |= AV_CH_LOW_FREQUENCY;
+    av_channel_layout_uninit(&st->codecpar->ch_layout);
+    av_channel_layout_from_mask(&st->codecpar->ch_layout, mask);
+
     *ast = bsmod;
-    if (st->codecpar->channels > 1 && bsmod == 0x7)
+    if (st->codecpar->ch_layout.nb_channels > 1 && bsmod == 0x7)
         *ast = AV_AUDIO_SERVICE_TYPE_KARAOKE;
 
     return 0;
@@ -898,15 +906,14 @@ static int mov_read_ddts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     if (channel_layout_code > 0xff) {
         av_log(c->fc, AV_LOG_WARNING, "Unsupported DTS audio channel layout\n");
     }
-    st->codecpar->channel_layout =
+    av_channel_layout_uninit(&st->codecpar->ch_layout);
+    av_channel_layout_from_mask(&st->codecpar->ch_layout,
             ((channel_layout_code & 0x1) ? AV_CH_FRONT_CENTER : 0) |
             ((channel_layout_code & 0x2) ? AV_CH_FRONT_LEFT : 0) |
             ((channel_layout_code & 0x2) ? AV_CH_FRONT_RIGHT : 0) |
             ((channel_layout_code & 0x4) ? AV_CH_SIDE_LEFT : 0) |
             ((channel_layout_code & 0x4) ? AV_CH_SIDE_RIGHT : 0) |
-            ((channel_layout_code & 0x8) ? AV_CH_LOW_FREQUENCY : 0);
-
-    st->codecpar->channels = av_get_channel_layout_nb_channels(st->codecpar->channel_layout);
+            ((channel_layout_code & 0x8) ? AV_CH_LOW_FREQUENCY : 0));
 
     return 0;
 }
@@ -2162,14 +2169,18 @@ static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
     uint16_t version = avio_rb16(pb);
     uint32_t id = 0;
     AVDictionaryEntry *compatible_brands = av_dict_get(c->fc->metadata, "compatible_brands", NULL, AV_DICT_MATCH_CASE);
+    int channel_count;
 
     avio_rb16(pb); /* revision level */
     id = avio_rl32(pb); /* vendor */
     av_dict_set(&st->metadata, "vendor_id", av_fourcc2str(id), 0);
 
-    st->codecpar->channels              = avio_rb16(pb); /* channel count */
+    channel_count = avio_rb16(pb);
+
+    st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
+    st->codecpar->ch_layout.nb_channels = channel_count;
     st->codecpar->bits_per_coded_sample = avio_rb16(pb); /* sample size */
-    av_log(c->fc, AV_LOG_TRACE, "audio channels %d\n", st->codecpar->channels);
+    av_log(c->fc, AV_LOG_TRACE, "audio channels %d\n", channel_count);
 
     sc->audio_cid = avio_rb16(pb);
     avio_rb16(pb); /* packet size = 0 */
@@ -2189,7 +2200,9 @@ static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
         } else if (version == 2) {
             avio_rb32(pb); /* sizeof struct only */
             st->codecpar->sample_rate = av_int2double(avio_rb64(pb));
-            st->codecpar->channels    = avio_rb32(pb);
+            channel_count = avio_rb32(pb);
+            st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
+            st->codecpar->ch_layout.nb_channels = channel_count;
             avio_rb32(pb); /* always 0x7F000000 */
             st->codecpar->bits_per_coded_sample = avio_rb32(pb);
 
@@ -2241,15 +2254,15 @@ static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
     /* set values for old format before stsd version 1 appeared */
     case AV_CODEC_ID_MACE3:
         sc->samples_per_frame = 6;
-        sc->bytes_per_frame   = 2 * st->codecpar->channels;
+        sc->bytes_per_frame   = 2 * st->codecpar->ch_layout.nb_channels;
         break;
     case AV_CODEC_ID_MACE6:
         sc->samples_per_frame = 6;
-        sc->bytes_per_frame   = 1 * st->codecpar->channels;
+        sc->bytes_per_frame   = 1 * st->codecpar->ch_layout.nb_channels;
         break;
     case AV_CODEC_ID_ADPCM_IMA_QT:
         sc->samples_per_frame = 64;
-        sc->bytes_per_frame   = 34 * st->codecpar->channels;
+        sc->bytes_per_frame   = 34 * st->codecpar->ch_layout.nb_channels;
         break;
     case AV_CODEC_ID_GSM:
         sc->samples_per_frame = 160;
@@ -2260,9 +2273,9 @@ static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
     }
 
     bits_per_sample = av_get_bits_per_sample(st->codecpar->codec_id);
-    if (bits_per_sample && (bits_per_sample >> 3) * (uint64_t)st->codecpar->channels <= INT_MAX) {
+    if (bits_per_sample && (bits_per_sample >> 3) * (uint64_t)st->codecpar->ch_layout.nb_channels <= INT_MAX) {
         st->codecpar->bits_per_coded_sample = bits_per_sample;
-        sc->sample_size = (bits_per_sample >> 3) * st->codecpar->channels;
+        sc->sample_size = (bits_per_sample >> 3) * st->codecpar->ch_layout.nb_channels;
     }
 }
 
@@ -2402,7 +2415,8 @@ static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
 #endif
     /* no ifdef since parameters are always those */
     case AV_CODEC_ID_QCELP:
-        st->codecpar->channels = 1;
+        av_channel_layout_uninit(&st->codecpar->ch_layout);
+        st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
         // force sample rate for qcelp when not stored in mov
         if (st->codecpar->codec_tag != MKTAG('Q','c','l','p'))
             st->codecpar->sample_rate = 8000;
@@ -2412,12 +2426,14 @@ static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
             sc->bytes_per_frame = 35;
         break;
     case AV_CODEC_ID_AMR_NB:
-        st->codecpar->channels    = 1;
+        av_channel_layout_uninit(&st->codecpar->ch_layout);
+        st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
         /* force sample rate for amr, stsd in 3gp does not store sample rate */
         st->codecpar->sample_rate = 8000;
         break;
     case AV_CODEC_ID_AMR_WB:
-        st->codecpar->channels    = 1;
+        av_channel_layout_uninit(&st->codecpar->ch_layout);
+        st->codecpar->ch_layout = (AVChannelLayout)AV_CHANNEL_LAYOUT_MONO;
         st->codecpar->sample_rate = 16000;
         break;
     case AV_CODEC_ID_MP2:
@@ -2436,7 +2452,12 @@ static int mov_finalize_stsd_codec(MOVContext *c, AVIOContext *pb,
         break;
     case AV_CODEC_ID_ALAC:
         if (st->codecpar->extradata_size == 36) {
-            st->codecpar->channels    = AV_RB8 (st->codecpar->extradata + 21);
+            int channel_count = AV_RB8(st->codecpar->extradata + 21);
+            if (st->codecpar->ch_layout.nb_channels != channel_count) {
+                av_channel_layout_uninit(&st->codecpar->ch_layout);
+                st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
+                st->codecpar->ch_layout.nb_channels = channel_count;
+            }
             st->codecpar->sample_rate = AV_RB32(st->codecpar->extradata + 32);
         }
         break;
@@ -2543,8 +2564,8 @@ int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
                 av_log(c->fc, AV_LOG_ERROR, "Invalid sample rate %d\n", st->codecpar->sample_rate);
                 return AVERROR_INVALIDDATA;
             }
-            if (st->codecpar->channels < 0) {
-                av_log(c->fc, AV_LOG_ERROR, "Invalid channels %d\n", st->codecpar->channels);
+            if (st->codecpar->ch_layout.nb_channels < 0) {
+                av_log(c->fc, AV_LOG_ERROR, "Invalid channels %d\n", st->codecpar->ch_layout.nb_channels);
                 return AVERROR_INVALIDDATA;
             }
         } else if (st->codecpar->codec_type==AVMEDIA_TYPE_SUBTITLE){
@@ -7034,6 +7055,7 @@ static int mov_read_dmlp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     unsigned format_info;
     int channel_assignment, channel_assignment1, channel_assignment2;
     int ratebits;
+    uint64_t chmask;
 
     if (c->fc->nb_streams < 1)
         return 0;
@@ -7054,8 +7076,10 @@ static int mov_read_dmlp(MOVContext *c, AVIOContext *pb, MOVAtom atom)
 
     st->codecpar->frame_size = 40 << (ratebits & 0x7);
     st->codecpar->sample_rate = mlp_samplerate(ratebits);
-    st->codecpar->channels = truehd_channels(channel_assignment);
-    st->codecpar->channel_layout = truehd_layout(channel_assignment);
+
+    av_channel_layout_uninit(&st->codecpar->ch_layout);
+    chmask = truehd_layout(channel_assignment);
+    av_channel_layout_from_mask(&st->codecpar->ch_layout, chmask);
 
     return 0;
 }
diff --git a/libavformat/mov_chan.c b/libavformat/mov_chan.c
index 349634094c..5894bb8ce2 100644
--- a/libavformat/mov_chan.c
+++ b/libavformat/mov_chan.c
@@ -499,7 +499,7 @@ static uint32_t mov_get_channel_label(uint32_t label)
 }
 
 uint32_t ff_mov_get_channel_layout_tag(enum AVCodecID codec_id,
-                                       uint64_t channel_layout,
+                                       AVChannelLayout *ch_layout,
                                        uint32_t *bitmap)
 {
     int i, j;
@@ -519,7 +519,7 @@ uint32_t ff_mov_get_channel_layout_tag(enum AVCodecID codec_id,
         const struct MovChannelLayoutMap *layout_map;
 
         /* get the layout map based on the channel count */
-        channels = av_get_channel_layout_nb_channels(channel_layout);
+        channels = ch_layout->nb_channels;
         if (channels > 9)
             channels = 0;
         layout_map = mov_ch_layout_map[channels];
@@ -530,7 +530,8 @@ uint32_t ff_mov_get_channel_layout_tag(enum AVCodecID codec_id,
                 continue;
             for (j = 0; layout_map[j].tag != 0; j++) {
                 if (layout_map[j].tag    == layouts[i] &&
-                    layout_map[j].layout == channel_layout)
+                    (ch_layout->order == AV_CHANNEL_ORDER_NATIVE &&
+                     layout_map[j].layout == ch_layout->u.mask))
                     break;
             }
             if (layout_map[j].tag)
@@ -540,9 +541,9 @@ uint32_t ff_mov_get_channel_layout_tag(enum AVCodecID codec_id,
     }
 
     /* if no tag was found, use channel bitmap as a backup if possible */
-    if (tag == 0 && channel_layout > 0 && channel_layout < 0x40000) {
+    if (tag == 0 && av_channel_layout_check(ch_layout) && ch_layout->u.mask < 0x40000) {
         tag     = MOV_CH_LAYOUT_USE_BITMAP;
-        *bitmap = (uint32_t)channel_layout;
+        *bitmap = (uint32_t)ch_layout->u.mask;
     } else
         *bitmap = 0;
 
@@ -555,6 +556,7 @@ int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
                      int64_t size)
 {
     uint32_t layout_tag, bitmap, num_descr, label_mask;
+    uint64_t mask = 0;
     int i;
 
     if (size < 12)
@@ -596,9 +598,14 @@ int ff_mov_read_chan(AVFormatContext *s, AVIOContext *pb, AVStream *st,
     }
     if (layout_tag == 0) {
         if (label_mask)
-            st->codecpar->channel_layout = label_mask;
+            mask = label_mask;
     } else
-        st->codecpar->channel_layout = mov_get_channel_layout(layout_tag, bitmap);
+        mask = mov_get_channel_layout(layout_tag, bitmap);
+
+    if (mask) {
+        av_channel_layout_uninit(&st->codecpar->ch_layout);
+        av_channel_layout_from_mask(&st->codecpar->ch_layout, mask);
+    }
     avio_skip(pb, size - 12);
 
     return 0;
diff --git a/libavformat/mov_chan.h b/libavformat/mov_chan.h
index f7916e9899..a9bc9f80d4 100644
--- a/libavformat/mov_chan.h
+++ b/libavformat/mov_chan.h
@@ -28,6 +28,7 @@
 
 #include <stdint.h>
 
+#include "libavutil/channel_layout.h"
 #include "libavcodec/codec_id.h"
 #include "avformat.h"
 
@@ -41,7 +42,7 @@
  * @return                     channel layout tag
  */
 uint32_t ff_mov_get_channel_layout_tag(enum AVCodecID codec_id,
-                                       uint64_t channel_layout,
+                                       AVChannelLayout *ch_layout,
                                        uint32_t *bitmap);
 
 /**
diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index 4c868919ae..6d02a9ea39 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -868,7 +868,7 @@ static int mov_write_chan_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *tra
     int64_t pos = avio_tell(pb);
 
     layout_tag = ff_mov_get_channel_layout_tag(track->par->codec_id,
-                                               track->par->channel_layout,
+                                               &track->par->ch_layout,
                                                &bitmap);
     if (!layout_tag) {
         av_log(s, AV_LOG_WARNING, "not writing 'chan' tag due to "
@@ -1137,7 +1137,7 @@ static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
     int ret = 0;
 
     if (track->mode == MODE_MOV) {
-        if (track->timescale > UINT16_MAX || !track->par->channels) {
+        if (track->timescale > UINT16_MAX || !track->par->ch_layout.nb_channels) {
             if (mov_get_lpcm_flags(track->par->codec_id))
                 tag = AV_RL32("lpcm");
             version = 2;
@@ -1173,7 +1173,7 @@ static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
         avio_wb32(pb, 0x00010000);
         avio_wb32(pb, 72);
         avio_wb64(pb, av_double2int(track->par->sample_rate));
-        avio_wb32(pb, track->par->channels);
+        avio_wb32(pb, track->par->ch_layout.nb_channels);
         avio_wb32(pb, 0x7F000000);
         avio_wb32(pb, av_get_bits_per_sample(track->par->codec_id));
         avio_wb32(pb, mov_get_lpcm_flags(track->par->codec_id));
@@ -1181,7 +1181,7 @@ static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
         avio_wb32(pb, get_samples_per_packet(track));
     } else {
         if (track->mode == MODE_MOV) {
-            avio_wb16(pb, track->par->channels);
+            avio_wb16(pb, track->par->ch_layout.nb_channels);
             if (track->par->codec_id == AV_CODEC_ID_PCM_U8 ||
                 track->par->codec_id == AV_CODEC_ID_PCM_S8)
                 avio_wb16(pb, 8); /* bits per sample */
@@ -1194,7 +1194,7 @@ static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
             if (track->par->codec_id == AV_CODEC_ID_FLAC ||
                 track->par->codec_id == AV_CODEC_ID_ALAC ||
                 track->par->codec_id == AV_CODEC_ID_OPUS) {
-                avio_wb16(pb, track->par->channels);
+                avio_wb16(pb, track->par->ch_layout.nb_channels);
             } else {
                 avio_wb16(pb, 2);
             }
@@ -1226,7 +1226,7 @@ static int mov_write_audio_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContex
             avio_wb32(pb, 1); /*  must be 1 for  uncompressed formats */
         else
             avio_wb32(pb, track->par->frame_size); /* Samples per packet */
-        avio_wb32(pb, track->sample_size / track->par->channels); /* Bytes per packet */
+        avio_wb32(pb, track->sample_size / track->par->ch_layout.nb_channels); /* Bytes per packet */
         avio_wb32(pb, track->sample_size); /* Bytes per frame */
         avio_wb32(pb, 2); /* Bytes per sample */
     }
@@ -4392,7 +4392,7 @@ static int mov_write_isml_manifest(AVIOContext *pb, MOVMuxContext *mov, AVFormat
                             track->par->extradata_size);
             param_write_int(pb, "AudioTag", ff_codec_get_tag(ff_codec_wav_tags,
                                                              track->par->codec_id));
-            param_write_int(pb, "Channels", track->par->channels);
+            param_write_int(pb, "Channels", track->par->ch_layout.nb_channels);
             param_write_int(pb, "SamplingRate", track->par->sample_rate);
             param_write_int(pb, "BitsPerSample", 16);
             param_write_int(pb, "PacketSize", track->par->block_align ?
@@ -5150,7 +5150,7 @@ static int mov_write_uuidprof_tag(AVIOContext *pb, AVFormatContext *s)
     avio_wb32(pb, audio_kbitrate);
     avio_wb32(pb, audio_kbitrate);
     avio_wb32(pb, audio_rate);
-    avio_wb32(pb, audio_par->channels);
+    avio_wb32(pb, audio_par->ch_layout.nb_channels);
 
     avio_wb32(pb, 0x34);  /* size */
     ffio_wfourcc(pb, "VPRF");   /* video */
@@ -6830,7 +6830,8 @@ static int mov_init(AVFormatContext *s)
             }else if (st->codecpar->frame_size > 1){ /* assume compressed audio */
                 track->audio_vbr = 1;
             }else{
-                track->sample_size = (av_get_bits_per_sample(st->codecpar->codec_id) >> 3) * st->codecpar->channels;
+                track->sample_size = (av_get_bits_per_sample(st->codecpar->codec_id) >> 3) *
+                                     st->codecpar->ch_layout.nb_channels;
             }
             if (st->codecpar->codec_id == AV_CODEC_ID_ILBC ||
                 st->codecpar->codec_id == AV_CODEC_ID_ADPCM_IMA_QT) {
@@ -6966,7 +6967,8 @@ static int mov_write_header(AVFormatContext *s)
         }
 
         if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO ||
-            track->par->channel_layout != AV_CH_LAYOUT_MONO)
+            av_channel_layout_compare(&track->par->ch_layout,
+                                      &(AVChannelLayout)AV_CHANNEL_LAYOUT_MONO))
             continue;
 
         for (j = 0; j < s->nb_streams; j++) {
@@ -6976,7 +6978,8 @@ static int mov_write_header(AVFormatContext *s)
                 continue;
 
             if (stj->codecpar->codec_type != AVMEDIA_TYPE_AUDIO ||
-                trackj->par->channel_layout != AV_CH_LAYOUT_MONO ||
+                av_channel_layout_compare(&trackj->par->ch_layout,
+                                          &(AVChannelLayout)AV_CHANNEL_LAYOUT_MONO) ||
                 trackj->language != track->language ||
                 trackj->tag != track->tag
             )
-- 
2.34.1

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