static av_cold int read_header(AVFormatContext *ctx)
{
CDIOContext *s = ctx->priv_data;
AVStream *st;
int ret, i;
char *err = NULL;
if (!(st = avformat_new_stream(ctx, NULL)))
return AVERROR(ENOMEM);
s->drive = cdio_cddap_identify(ctx->filename, CDDA_MESSAGE_LOGIT, &err);
if (!s->drive) {
av_log(ctx, AV_LOG_ERROR, "Could not open drive %s.\n", ctx->filename);
return AVERROR(EINVAL);
}
if (err) {
av_log(ctx, AV_LOG_VERBOSE, "%s\n", err);
free(err);
}
if ((ret = cdio_cddap_open(s->drive)) < 0 || !s->drive->opened) {
av_log(ctx, AV_LOG_ERROR, "Could not open disk in drive %s.\n", ctx->filename);
return AVERROR(EINVAL);
}
cdio_cddap_verbose_set(s->drive, CDDA_MESSAGE_LOGIT, CDDA_MESSAGE_LOGIT);
if (s->speed)
cdio_cddap_speed_set(s->drive, s->speed);
s->paranoia = cdio_paranoia_init(s->drive);
if (!s->paranoia) {
av_log(ctx, AV_LOG_ERROR, "Could not init paranoia.\n");
return AVERROR(EINVAL);
}
cdio_paranoia_modeset(s->paranoia, s->paranoia_mode);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
if (s->drive->bigendianp)
st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
else
st->codec->codec_id = AV_CODEC_ID_PCM_S16LE;
st->codec->sample_rate = 44100;
st->codec->channels = 2;
if (s->drive->audio_last_sector != CDIO_INVALID_LSN &&
s->drive->audio_first_sector != CDIO_INVALID_LSN)
st->duration = s->drive->audio_last_sector - s->drive->audio_first_sector;
else if (s->drive->tracks)
st->duration = s->drive->disc_toc[s->drive->tracks].dwStartSector;
avpriv_set_pts_info(st, 64, CDIO_CD_FRAMESIZE_RAW, 2*st->codec->channels*st->codec->sample_rate);
for (i = 0; i < s->drive->tracks; i++) {
char title[16];
snprintf(title, sizeof(title), "track %02d", s->drive->disc_toc[i].bTrack);
avpriv_new_chapter(ctx, i, st->time_base, s->drive->disc_toc[i].dwStartSector,
s->drive->disc_toc[i+1].dwStartSector, title);
}
s->last_sector = cdio_cddap_disc_lastsector(s->drive);
return 0;
}
static AVChapter *read_chapter(AVFormatContext *s)
{
uint8_t line[256];
int64_t start, end;
AVRational tb = {1, 1e9};
get_line(s->pb, line, sizeof(line));
if (sscanf(line, "TIMEBASE=%d/%d", &tb.num, &tb.den))
get_line(s->pb, line, sizeof(line));
if (!sscanf(line, "START=%"SCNd64, &start)) {
av_log(s, AV_LOG_ERROR, "Expected chapter start timestamp, found %s.\n", line);
start = (s->nb_chapters && s->chapters[s->nb_chapters - 1]->end != AV_NOPTS_VALUE) ?
s->chapters[s->nb_chapters - 1]->end : 0;
} else
get_line(s->pb, line, sizeof(line));
if (!sscanf(line, "END=%"SCNd64, &end)) {
av_log(s, AV_LOG_ERROR, "Expected chapter end timestamp, found %s.\n", line);
end = AV_NOPTS_VALUE;
}
return avpriv_new_chapter(s, s->nb_chapters, tb, start, end, NULL);
}
static int flac_read_header(AVFormatContext *s)
{
int ret, metadata_last=0, metadata_type, metadata_size, found_streaminfo=0;
uint8_t header[4];
uint8_t *buffer=NULL,*tmp=NULL;
AVStream *st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = AV_CODEC_ID_FLAC;
st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
/* the parameters will be extracted from the compressed bitstream */
/* if fLaC marker is not found, assume there is no header */
if (avio_rl32(s->pb) != MKTAG('f','L','a','C')) {
avio_seek(s->pb, -4, SEEK_CUR);
return 0;
}
/* process metadata blocks */
while (!url_feof(s->pb) && !metadata_last) {
avio_read(s->pb, header, 4);
avpriv_flac_parse_block_header(header, &metadata_last, &metadata_type,
&metadata_size);
switch (metadata_type) {
/* allocate and read metadata block for supported types */
case FLAC_METADATA_TYPE_STREAMINFO:
case FLAC_METADATA_TYPE_CUESHEET:
case FLAC_METADATA_TYPE_PICTURE:
case FLAC_METADATA_TYPE_VORBIS_COMMENT:
buffer = av_mallocz(metadata_size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!buffer) {
return AVERROR(ENOMEM);
}
if (avio_read(s->pb, buffer, metadata_size) != metadata_size) {
RETURN_ERROR(AVERROR(EIO));
}
break;
/* skip metadata block for unsupported types */
default:
ret = avio_skip(s->pb, metadata_size);
if (ret < 0)
return ret;
}
if (metadata_type == FLAC_METADATA_TYPE_STREAMINFO) {
FLACStreaminfo si;
/* STREAMINFO can only occur once */
if (found_streaminfo) {
RETURN_ERROR(AVERROR_INVALIDDATA);
}
if (metadata_size != FLAC_STREAMINFO_SIZE) {
RETURN_ERROR(AVERROR_INVALIDDATA);
}
found_streaminfo = 1;
st->codec->extradata = av_malloc(metadata_size + 8 + FF_INPUT_BUFFER_PADDING_SIZE);
if (!st->codec->extradata) {
RETURN_ERROR(AVERROR(ENOMEM));
}
st->codec->extradata_size = metadata_size + 8;
AV_WL32(st->codec->extradata, MKTAG('f','L','a','C'));
memcpy(st->codec->extradata + 4, header, 4);
memcpy(st->codec->extradata + 8, buffer, metadata_size);
av_freep(&buffer);
/* get codec params from STREAMINFO header */
avpriv_flac_parse_streaminfo(st->codec, &si, st->codec->extradata + 8);
/* set time base and duration */
if (si.samplerate > 0) {
avpriv_set_pts_info(st, 64, 1, si.samplerate);
if (si.samples > 0)
st->duration = si.samples;
}
} else if (metadata_type == FLAC_METADATA_TYPE_CUESHEET) {
uint8_t isrc[13];
uint64_t start;
const uint8_t *offset;
int i, chapters, track, ti;
if (metadata_size < 431)
RETURN_ERROR(AVERROR_INVALIDDATA);
offset = buffer + 395;
chapters = bytestream_get_byte(&offset) - 1;
if (chapters <= 0)
RETURN_ERROR(AVERROR_INVALIDDATA);
for (i = 0; i < chapters; i++) {
if (offset + 36 - buffer > metadata_size)
RETURN_ERROR(AVERROR_INVALIDDATA);
start = bytestream_get_be64(&offset);
track = bytestream_get_byte(&offset);
bytestream_get_buffer(&offset, isrc, 12);
isrc[12] = 0;
offset += 14;
ti = bytestream_get_byte(&offset);
if (ti <= 0) RETURN_ERROR(AVERROR_INVALIDDATA);
offset += ti * 12;
avpriv_new_chapter(s, track, st->time_base, start, AV_NOPTS_VALUE, isrc);
}
av_freep(&buffer);
} else if (metadata_type == FLAC_METADATA_TYPE_PICTURE) {
ret = parse_picture(s, buffer, metadata_size);
av_freep(&buffer);
if (ret < 0) {
av_log(s, AV_LOG_ERROR, "Error parsing attached picture.\n");
return ret;
}
} else {
/* STREAMINFO must be the first block */
if (!found_streaminfo) {
RETURN_ERROR(AVERROR_INVALIDDATA);
}
/* process supported blocks other than STREAMINFO */
if (metadata_type == FLAC_METADATA_TYPE_VORBIS_COMMENT) {
/* append VorbisComment to extradata */
tmp = av_realloc(st->codec->extradata, st->codec->extradata_size + 4 + metadata_size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!tmp) {
RETURN_ERROR(AVERROR(ENOMEM));
}
st->codec->extradata = tmp;
tmp += st->codec->extradata_size;
memcpy(tmp, header, 4);
memcpy(tmp + 4, buffer, metadata_size);
st->codec->extradata_size = st->codec->extradata_size + 4 + metadata_size;
if (ff_vorbis_comment(s, &s->metadata, buffer, metadata_size)) {
av_log(s, AV_LOG_WARNING, "error parsing VorbisComment metadata\n");
}
}
av_freep(&buffer);
}
}
return 0;
fail:
av_free(buffer);
return ret;
}
static int flac_read_header(AVFormatContext *s)
{
int ret, metadata_last=0, metadata_type, metadata_size, found_streaminfo=0;
uint8_t header[4];
uint8_t *buffer=NULL;
AVStream *st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = AV_CODEC_ID_FLAC;
st->need_parsing = AVSTREAM_PARSE_FULL_RAW;
/* the parameters will be extracted from the compressed bitstream */
/* if fLaC marker is not found, assume there is no header */
if (avio_rl32(s->pb) != MKTAG('f','L','a','C')) {
avio_seek(s->pb, -4, SEEK_CUR);
return 0;
}
/* process metadata blocks */
while (!avio_feof(s->pb) && !metadata_last) {
avio_read(s->pb, header, 4);
flac_parse_block_header(header, &metadata_last, &metadata_type,
&metadata_size);
switch (metadata_type) {
/* allocate and read metadata block for supported types */
case FLAC_METADATA_TYPE_STREAMINFO:
case FLAC_METADATA_TYPE_CUESHEET:
case FLAC_METADATA_TYPE_PICTURE:
case FLAC_METADATA_TYPE_VORBIS_COMMENT:
buffer = av_mallocz(metadata_size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!buffer) {
return AVERROR(ENOMEM);
}
if (avio_read(s->pb, buffer, metadata_size) != metadata_size) {
RETURN_ERROR(AVERROR(EIO));
}
break;
/* skip metadata block for unsupported types */
default:
ret = avio_skip(s->pb, metadata_size);
if (ret < 0)
return ret;
}
if (metadata_type == FLAC_METADATA_TYPE_STREAMINFO) {
FLACStreaminfo si;
/* STREAMINFO can only occur once */
if (found_streaminfo) {
RETURN_ERROR(AVERROR_INVALIDDATA);
}
if (metadata_size != FLAC_STREAMINFO_SIZE) {
RETURN_ERROR(AVERROR_INVALIDDATA);
}
found_streaminfo = 1;
st->codec->extradata = buffer;
st->codec->extradata_size = metadata_size;
buffer = NULL;
/* get codec params from STREAMINFO header */
avpriv_flac_parse_streaminfo(st->codec, &si, st->codec->extradata);
/* set time base and duration */
if (si.samplerate > 0) {
avpriv_set_pts_info(st, 64, 1, si.samplerate);
if (si.samples > 0)
st->duration = si.samples;
}
} else if (metadata_type == FLAC_METADATA_TYPE_CUESHEET) {
uint8_t isrc[13];
uint64_t start;
const uint8_t *offset;
int i, chapters, track, ti;
if (metadata_size < 431)
RETURN_ERROR(AVERROR_INVALIDDATA);
offset = buffer + 395;
chapters = bytestream_get_byte(&offset) - 1;
if (chapters <= 0)
RETURN_ERROR(AVERROR_INVALIDDATA);
for (i = 0; i < chapters; i++) {
if (offset + 36 - buffer > metadata_size)
RETURN_ERROR(AVERROR_INVALIDDATA);
start = bytestream_get_be64(&offset);
track = bytestream_get_byte(&offset);
bytestream_get_buffer(&offset, isrc, 12);
isrc[12] = 0;
offset += 14;
ti = bytestream_get_byte(&offset);
if (ti <= 0) RETURN_ERROR(AVERROR_INVALIDDATA);
offset += ti * 12;
avpriv_new_chapter(s, track, st->time_base, start, AV_NOPTS_VALUE, isrc);
}
av_freep(&buffer);
} else if (metadata_type == FLAC_METADATA_TYPE_PICTURE) {
ret = ff_flac_parse_picture(s, buffer, metadata_size);
av_freep(&buffer);
if (ret < 0) {
av_log(s, AV_LOG_ERROR, "Error parsing attached picture.\n");
return ret;
}
} else {
/* STREAMINFO must be the first block */
if (!found_streaminfo) {
RETURN_ERROR(AVERROR_INVALIDDATA);
}
/* process supported blocks other than STREAMINFO */
if (metadata_type == FLAC_METADATA_TYPE_VORBIS_COMMENT) {
AVDictionaryEntry *chmask;
ret = ff_vorbis_comment(s, &s->metadata, buffer, metadata_size, 1);
if (ret < 0) {
av_log(s, AV_LOG_WARNING, "error parsing VorbisComment metadata\n");
} else if (ret > 0) {
s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
}
/* parse the channels mask if present */
chmask = av_dict_get(s->metadata, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", NULL, 0);
if (chmask) {
uint64_t mask = strtol(chmask->value, NULL, 0);
if (!mask || mask & ULLN(~0x3ffff)) {
av_log(s, AV_LOG_WARNING,
"Invalid value of WAVEFORMATEXTENSIBLE_CHANNEL_MASK\n");
} else {
st->codec->channel_layout = mask;
av_dict_set(&s->metadata, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", NULL, 0);
}
}
}
av_freep(&buffer);
}
}
ret = ff_replaygain_export(st, s->metadata);
if (ret < 0)
return ret;
return 0;
fail:
av_free(buffer);
return ret;
}
