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avformat/matroskadec: Use dedicated pointer for access to codecpar 

Shortens code and improves readability.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2023-08-09 00:44:38 +02:00
parent 8507b9203c
commit e8af7d0acd
1 changed files with 50 additions and 48 deletions
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98
libavformat/matroskadec.c
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@ -2513,6 +2513,7 @@ static int matroska_parse_tracks(AVFormatContext *s)
enum AVCodecID codec_id = AV_CODEC_ID_NONE;
EbmlList *encodings_list = &track->encodings;
MatroskaTrackEncoding *encodings = encodings_list->elem;
AVCodecParameters *par;
uint8_t *extradata = NULL;
int extradata_size = 0;
int extradata_offset = 0;
@ -2653,6 +2654,7 @@ static int matroska_parse_tracks(AVFormatContext *s)
return AVERROR(ENOMEM);
}
sti = ffstream(st);
par = st->codecpar;
if (track->flag_default)
st->disposition |= AV_DISPOSITION_DEFAULT;
@ -2711,12 +2713,12 @@ static int matroska_parse_tracks(AVFormatContext *s)
ffio_init_context(&b, track->codec_priv.data,
track->codec_priv.size,
0, NULL, NULL, NULL, NULL);
ret = ff_get_wav_header(s, &b.pub, st->codecpar,
ret = ff_get_wav_header(s, &b.pub, par,
track->codec_priv.size, 0);
if (ret < 0)
return ret;
codec_id = st->codecpar->codec_id;
fourcc = st->codecpar->codec_tag;
codec_id = par->codec_id;
fourcc = par->codec_tag;
extradata_offset = FFMIN(track->codec_priv.size, 18);
} else if (!strcmp(track->codec_id, "A_QUICKTIME")
/* Normally 36, but allow noncompliant private data */
@ -2882,7 +2884,7 @@ static int matroska_parse_tracks(AVFormatContext *s)
if (track->audio.sub_packet_h & 1 || 2 * track->audio.frame_size
!= (int64_t)track->audio.sub_packet_h * track->audio.coded_framesize)
return AVERROR_INVALIDDATA;
st->codecpar->block_align = track->audio.coded_framesize;
par->block_align = track->audio.coded_framesize;
track->codec_priv.size = 0;
} else {
if (codec_id == AV_CODEC_ID_SIPR) {
@ -2890,11 +2892,11 @@ static int matroska_parse_tracks(AVFormatContext *s)
if (flavor > 3)
return AVERROR_INVALIDDATA;
track->audio.sub_packet_size = ff_sipr_subpk_size[flavor];
st->codecpar->bit_rate = sipr_bit_rate[flavor];
par->bit_rate = sipr_bit_rate[flavor];
} else if (track->audio.sub_packet_size <= 0 ||
track->audio.frame_size % track->audio.sub_packet_size)
return AVERROR_INVALIDDATA;
st->codecpar->block_align = track->audio.sub_packet_size;
par->block_align = track->audio.sub_packet_size;
extradata_offset = 78;
}
track->audio.buf = av_malloc_array(track->audio.sub_packet_h,
@ -2928,21 +2930,21 @@ static int matroska_parse_tracks(AVFormatContext *s)
// [0x30..0x37] are component tags utilized for
// non-mobile captioning service ("profile A").
if (component_tag >= 0x30 && component_tag <= 0x37) {
st->codecpar->profile = FF_PROFILE_ARIB_PROFILE_A;
par->profile = FF_PROFILE_ARIB_PROFILE_A;
}
break;
case 0x0012:
// component tag 0x87 signifies a mobile/partial reception
// (1seg) captioning service ("profile C").
if (component_tag == 0x87) {
st->codecpar->profile = FF_PROFILE_ARIB_PROFILE_C;
par->profile = FF_PROFILE_ARIB_PROFILE_C;
}
break;
default:
break;
}
if (st->codecpar->profile == FF_PROFILE_UNKNOWN)
if (par->profile == FF_PROFILE_UNKNOWN)
av_log(matroska->ctx, AV_LOG_WARNING,
"Unknown ARIB caption profile utilized: %02x / %04x\n",
component_tag, data_component_id);
@ -2955,16 +2957,16 @@ static int matroska_parse_tracks(AVFormatContext *s)
av_log(matroska->ctx, AV_LOG_INFO,
"Unknown/unsupported AVCodecID %s.\n", track->codec_id);
st->codecpar->codec_id = codec_id;
par->codec_id = codec_id;
if (!st->codecpar->extradata) {
if (!par->extradata) {
if (extradata) {
st->codecpar->extradata = extradata;
st->codecpar->extradata_size = extradata_size;
par->extradata = extradata;
par->extradata_size = extradata_size;
} else if (track->codec_priv.data && track->codec_priv.size > 0) {
if (ff_alloc_extradata(st->codecpar, track->codec_priv.size))
if (ff_alloc_extradata(par, track->codec_priv.size))
return AVERROR(ENOMEM);
memcpy(st->codecpar->extradata,
memcpy(par->extradata,
track->codec_priv.data + extradata_offset,
track->codec_priv.size);
}
@ -2975,32 +2977,32 @@ static int matroska_parse_tracks(AVFormatContext *s)
int display_width_mul = 1;
int display_height_mul = 1;
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
st->codecpar->codec_tag = fourcc;
par->codec_type = AVMEDIA_TYPE_VIDEO;
par->codec_tag = fourcc;
if (bit_depth >= 0)
st->codecpar->bits_per_coded_sample = bit_depth;
st->codecpar->width = track->video.pixel_width;
st->codecpar->height = track->video.pixel_height;
par->bits_per_coded_sample = bit_depth;
par->width = track->video.pixel_width;
par->height = track->video.pixel_height;
if (track->video.interlaced == MATROSKA_VIDEO_INTERLACE_FLAG_INTERLACED)
st->codecpar->field_order = mkv_field_order(matroska, track->video.field_order);
par->field_order = mkv_field_order(matroska, track->video.field_order);
else if (track->video.interlaced == MATROSKA_VIDEO_INTERLACE_FLAG_PROGRESSIVE)
st->codecpar->field_order = AV_FIELD_PROGRESSIVE;
par->field_order = AV_FIELD_PROGRESSIVE;
if (track->video.stereo_mode && track->video.stereo_mode < MATROSKA_VIDEO_STEREOMODE_TYPE_NB)
mkv_stereo_mode_display_mul(track->video.stereo_mode, &display_width_mul, &display_height_mul);
if (track->video.display_unit < MATROSKA_VIDEO_DISPLAYUNIT_UNKNOWN) {
if (track->video.display_width && track->video.display_height &&
st->codecpar->height < INT64_MAX / track->video.display_width / display_width_mul &&
st->codecpar->width < INT64_MAX / track->video.display_height / display_height_mul)
par->height < INT64_MAX / track->video.display_width / display_width_mul &&
par->width < INT64_MAX / track->video.display_height / display_height_mul)
av_reduce(&st->sample_aspect_ratio.num,
&st->sample_aspect_ratio.den,
st->codecpar->height * track->video.display_width * display_width_mul,
st->codecpar->width * track->video.display_height * display_height_mul,
par->height * track->video.display_width * display_width_mul,
par->width * track->video.display_height * display_height_mul,
INT_MAX);
}
if (st->codecpar->codec_id != AV_CODEC_ID_HEVC)
if (par->codec_id != AV_CODEC_ID_HEVC)
sti->need_parsing = AVSTREAM_PARSE_HEADERS;
if (track->default_duration) {
@ -3052,35 +3054,35 @@ static int matroska_parse_tracks(AVFormatContext *s)
if (ret < 0)
return ret;
} else if (track->type == MATROSKA_TRACK_TYPE_AUDIO) {
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
st->codecpar->codec_tag = fourcc;
st->codecpar->sample_rate = track->audio.out_samplerate;
par->codec_type = AVMEDIA_TYPE_AUDIO;
par->codec_tag = fourcc;
par->sample_rate = track->audio.out_samplerate;
// channel layout may be already set by codec private checks above
if (!av_channel_layout_check(&st->codecpar->ch_layout)) {
st->codecpar->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
st->codecpar->ch_layout.nb_channels = track->audio.channels;
if (!av_channel_layout_check(&par->ch_layout)) {
par->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
par->ch_layout.nb_channels = track->audio.channels;
}
if (!st->codecpar->bits_per_coded_sample)
st->codecpar->bits_per_coded_sample = track->audio.bitdepth;
if (st->codecpar->codec_id == AV_CODEC_ID_MP3 ||
st->codecpar->codec_id == AV_CODEC_ID_MLP ||
st->codecpar->codec_id == AV_CODEC_ID_TRUEHD)
if (!par->bits_per_coded_sample)
par->bits_per_coded_sample = track->audio.bitdepth;
if (par->codec_id == AV_CODEC_ID_MP3 ||
par->codec_id == AV_CODEC_ID_MLP ||
par->codec_id == AV_CODEC_ID_TRUEHD)
sti->need_parsing = AVSTREAM_PARSE_FULL;
else if (st->codecpar->codec_id != AV_CODEC_ID_AAC)
else if (par->codec_id != AV_CODEC_ID_AAC)
sti->need_parsing = AVSTREAM_PARSE_HEADERS;
if (track->codec_delay > 0) {
st->codecpar->initial_padding = av_rescale_q(track->codec_delay,
(AVRational){1, 1000000000},
(AVRational){1, st->codecpar->codec_id == AV_CODEC_ID_OPUS ?
48000 : st->codecpar->sample_rate});
par->initial_padding = av_rescale_q(track->codec_delay,
(AVRational){1, 1000000000},
(AVRational){1, par->codec_id == AV_CODEC_ID_OPUS ?
48000 : par->sample_rate});
}
if (track->seek_preroll > 0) {
st->codecpar->seek_preroll = av_rescale_q(track->seek_preroll,
(AVRational){1, 1000000000},
(AVRational){1, st->codecpar->sample_rate});
par->seek_preroll = av_rescale_q(track->seek_preroll,
(AVRational){1, 1000000000},
(AVRational){1, par->sample_rate});
}
} else if (codec_id == AV_CODEC_ID_WEBVTT) {
st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
par->codec_type = AVMEDIA_TYPE_SUBTITLE;
if (!strcmp(track->codec_id, "D_WEBVTT/CAPTIONS")) {
st->disposition |= AV_DISPOSITION_CAPTIONS;
@ -3090,7 +3092,7 @@ static int matroska_parse_tracks(AVFormatContext *s)
st->disposition |= AV_DISPOSITION_METADATA;
}
} else if (track->type == MATROSKA_TRACK_TYPE_SUBTITLE) {
st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
par->codec_type = AVMEDIA_TYPE_SUBTITLE;
if (track->flag_textdescriptions)
st->disposition |= AV_DISPOSITION_DESCRIPTIONS;