demux: merge sh_video/sh_audio/sh_sub

This is mainly a refactor. I'm hoping it will make some things easier
in the future due to cleanly separating codec metadata and stream
metadata.

Also, declare that the "codec" field can not be NULL anymore. demux.c
will set it to "" if it's NULL when added. This gets rid of a corner
case everything had to handle, but which rarely happened.

1 files changed, 15 insertions, 16 deletions

diff --git a/audio/decode/ad_lavc.c b/audio/decode/ad_lavc.c
index f4a0a243d1..7e5c8d5aa5 100644
--- a/audio/decode/ad_lavc.c
+++ b/audio/decode/ad_lavc.c
@@ -79,12 +79,12 @@ static int init(struct dec_audio *da, const char *decoder)
     AVCodecContext *lavc_context;
     AVCodec *lavc_codec;
     struct sh_stream *sh = da->header;
-    struct sh_audio *sh_audio = sh->audio;
+    struct mp_codec_params *c = sh->codec;
 
     struct priv *ctx = talloc_zero(NULL, struct priv);
     da->priv = ctx;
 
-    ctx->force_channel_map = sh_audio->force_channels;
+    ctx->force_channel_map = c->force_channels;
 
     lavc_codec = avcodec_find_decoder_by_name(decoder);
     if (!lavc_codec) {
@@ -116,20 +116,20 @@ static int init(struct dec_audio *da, const char *decoder)
 
     mp_set_avopts(da->log, lavc_context, opts->avopts);
 
-    lavc_context->codec_tag = sh->codec_tag;
-    lavc_context->sample_rate = sh_audio->samplerate;
-    lavc_context->bit_rate = sh_audio->bitrate;
-    lavc_context->block_align = sh_audio->block_align;
-    lavc_context->bits_per_coded_sample = sh_audio->bits_per_coded_sample;
-    lavc_context->channels = sh_audio->channels.num;
-    if (!mp_chmap_is_unknown(&sh_audio->channels))
-        lavc_context->channel_layout = mp_chmap_to_lavc(&sh_audio->channels);
+    lavc_context->codec_tag = c->codec_tag;
+    lavc_context->sample_rate = c->samplerate;
+    lavc_context->bit_rate = c->bitrate;
+    lavc_context->block_align = c->block_align;
+    lavc_context->bits_per_coded_sample = c->bits_per_coded_sample;
+    lavc_context->channels = c->channels.num;
+    if (!mp_chmap_is_unknown(&c->channels))
+        lavc_context->channel_layout = mp_chmap_to_lavc(&c->channels);
 
     // demux_mkv
-    mp_lavc_set_extradata(lavc_context, sh->extradata, sh->extradata_size);
+    mp_lavc_set_extradata(lavc_context, c->extradata, c->extradata_size);
 
-    if (sh->lav_headers)
-        mp_copy_lav_codec_headers(lavc_context, sh->lav_headers);
+    if (c->lav_headers)
+        mp_copy_lav_codec_headers(lavc_context, c->lav_headers);
 
     mp_set_avcodec_threads(da->log, lavc_context, opts->threads);
 
@@ -228,9 +228,8 @@ static int decode_packet(struct dec_audio *da, struct mp_audio **out)
     if (lavc_chmap.num != avctx->channels)
         mp_chmap_from_channels(&lavc_chmap, avctx->channels);
     if (priv->force_channel_map) {
-        struct sh_audio *sh_audio = da->header->audio;
-        if (lavc_chmap.num == sh_audio->channels.num)
-            lavc_chmap = sh_audio->channels;
+        if (lavc_chmap.num == da->header->codec->channels.num)
+            lavc_chmap = da->header->codec->channels;
     }
     mp_audio_set_channels(mpframe, &lavc_chmap);