int ff_rm_read_mdpr_codecdata(AVFormatContext *s, AVIOContext *pb,
AVStream *st, RMStream *rst,
unsigned int codec_data_size)
{
unsigned int v;
int size;
int64_t codec_pos;
int ret;
avpriv_set_pts_info(st, 64, 1, 1000);
codec_pos = avio_tell(pb);
v = avio_rb32(pb);
if (v == MKTAG(0xfd, 'a', 'r', '.')) {
/* ra type header */
if (rm_read_audio_stream_info(s, pb, st, rst, 0))
return -1;
} else if (v == MKBETAG('L', 'S', 'D', ':')) {
avio_seek(pb, -4, SEEK_CUR);
if ((ret = rm_read_extradata(pb, st->codec, codec_data_size)) < 0)
return ret;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_tag = AV_RL32(st->codec->extradata);
st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
st->codec->codec_tag);
} else {
int fps;
if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
fail1:
av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
goto skip;
}
st->codec->codec_tag = avio_rl32(pb);
st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
st->codec->codec_tag);
av_log(s, AV_LOG_TRACE, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
if (st->codec->codec_id == AV_CODEC_ID_NONE)
goto fail1;
st->codec->width = avio_rb16(pb);
st->codec->height = avio_rb16(pb);
avio_skip(pb, 2); // looks like bits per sample
avio_skip(pb, 4); // always zero?
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
fps = avio_rb32(pb);
if ((ret = rm_read_extradata(pb, st->codec, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
return ret;
if (fps > 0) {
av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
0x10000, fps, (1 << 30) - 1);
} else if (s->error_recognition & AV_EF_EXPLODE) {
av_log(s, AV_LOG_ERROR, "Invalid framerate\n");
return AVERROR_INVALIDDATA;
}
}
skip:
/* skip codec info */
size = avio_tell(pb) - codec_pos;
avio_skip(pb, codec_data_size - size);
return 0;
}
static void mp3_parse_info_tag(AVFormatContext *s, AVStream *st,
MPADecodeHeader *c, uint32_t spf)
{
#define LAST_BITS(k, n) ((k) & ((1 << (n)) - 1))
#define MIDDLE_BITS(k, m, n) LAST_BITS((k) >> (m), ((n) - (m)))
uint16_t crc;
uint32_t v;
char version[10];
uint32_t peak = 0;
int32_t r_gain = INT32_MIN, a_gain = INT32_MIN;
MP3DecContext *mp3 = s->priv_data;
const int64_t xing_offtbl[2][2] = {{32, 17}, {17,9}};
/* Check for Xing / Info tag */
avio_skip(s->pb, xing_offtbl[c->lsf == 1][c->nb_channels == 1]);
v = avio_rb32(s->pb);
mp3->is_cbr = v == MKBETAG('I', 'n', 'f', 'o');
if (v != MKBETAG('X', 'i', 'n', 'g') && !mp3->is_cbr)
return;
v = avio_rb32(s->pb);
if (v & XING_FLAG_FRAMES)
mp3->frames = avio_rb32(s->pb);
if (v & XING_FLAG_SIZE)
mp3->size = avio_rb32(s->pb);
if (v & XING_FLAG_TOC && mp3->frames)
read_xing_toc(s, mp3->size, av_rescale_q(mp3->frames,
(AVRational){spf, c->sample_rate},
st->time_base));
/* VBR quality */
if (v & XING_FLAC_QSCALE)
avio_rb32(s->pb);
/* Encoder short version string */
memset(version, 0, sizeof(version));
avio_read(s->pb, version, 9);
/* Info Tag revision + VBR method */
avio_r8(s->pb);
/* Lowpass filter value */
avio_r8(s->pb);
/* ReplayGain peak */
v = avio_rb32(s->pb);
peak = av_rescale(v, 100000, 1 << 23);
/* Radio ReplayGain */
v = avio_rb16(s->pb);
if (MIDDLE_BITS(v, 13, 15) == 1) {
r_gain = MIDDLE_BITS(v, 0, 8) * 10000;
if (v & (1 << 9))
r_gain *= -1;
}
/* Audiophile ReplayGain */
v = avio_rb16(s->pb);
if (MIDDLE_BITS(v, 13, 15) == 2) {
a_gain = MIDDLE_BITS(v, 0, 8) * 10000;
if (v & (1 << 9))
a_gain *= -1;
}
/* Encoding flags + ATH Type */
avio_r8(s->pb);
/* if ABR {specified bitrate} else {minimal bitrate} */
avio_r8(s->pb);
/* Encoder delays */
avio_rb24(s->pb);
/* Misc */
avio_r8(s->pb);
/* MP3 gain */
avio_r8(s->pb);
/* Preset and surround info */
avio_rb16(s->pb);
/* Music length */
avio_rb32(s->pb);
/* Music CRC */
avio_rb16(s->pb);
/* Info Tag CRC */
crc = ffio_get_checksum(s->pb);
v = avio_rb16(s->pb);
if (v == crc) {
ff_replaygain_export_raw(st, r_gain, peak, a_gain, 0);
av_dict_set(&st->metadata, "encoder", version, 0);
}
}
/**
* Try to find Xing/Info/VBRI tags and compute duration from info therein
*/
static int mp3_parse_vbr_tags(AVFormatContext *s, AVStream *st, int64_t base)
{
uint32_t v, spf;
unsigned frames = 0; /* Total number of frames in file */
unsigned size = 0; /* Total number of bytes in the stream */
const int64_t xing_offtbl[2][2] = {{32, 17}, {17,9}};
MPADecodeHeader c;
int vbrtag_size = 0;
int is_cbr;
v = avio_rb32(s->pb);
if(ff_mpa_check_header(v) < 0)
return -1;
if (avpriv_mpegaudio_decode_header(&c, v) == 0)
vbrtag_size = c.frame_size;
if(c.layer != 3)
return -1;
spf = c.lsf ? 576 : 1152; /* Samples per frame, layer 3 */
/* Check for Xing / Info tag */
avio_skip(s->pb, xing_offtbl[c.lsf == 1][c.nb_channels == 1]);
v = avio_rb32(s->pb);
is_cbr = v == MKBETAG('I', 'n', 'f', 'o');
if (v == MKBETAG('X', 'i', 'n', 'g') || is_cbr) {
v = avio_rb32(s->pb);
if(v & XING_FLAG_FRAMES)
frames = avio_rb32(s->pb);
if(v & XING_FLAG_SIZE)
size = avio_rb32(s->pb);
if (v & XING_FLAG_TOC && frames)
read_xing_toc(s, size, av_rescale_q(frames, (AVRational){spf, c.sample_rate},
st->time_base));
}
/* Check for VBRI tag (always 32 bytes after end of mpegaudio header) */
avio_seek(s->pb, base + 4 + 32, SEEK_SET);
v = avio_rb32(s->pb);
if(v == MKBETAG('V', 'B', 'R', 'I')) {
/* Check tag version */
if(avio_rb16(s->pb) == 1) {
/* skip delay and quality */
avio_skip(s->pb, 4);
size = avio_rb32(s->pb);
frames = avio_rb32(s->pb);
}
}
if(!frames && !size)
return -1;
/* Skip the vbr tag frame */
avio_seek(s->pb, base + vbrtag_size, SEEK_SET);
if(frames)
st->duration = av_rescale_q(frames, (AVRational){spf, c.sample_rate},
st->time_base);
if (size && frames && !is_cbr)
st->codec->bit_rate = av_rescale(size, 8 * c.sample_rate, frames * (int64_t)spf);
return 0;
}
static int thp_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
ThpDemuxContext *thp = s->priv_data;
AVStream *st;
AVIOContext *pb = s->pb;
int i;
/* Read the file header. */
avio_rb32(pb); /* Skip Magic. */
thp->version = avio_rb32(pb);
avio_rb32(pb); /* Max buf size. */
avio_rb32(pb); /* Max samples. */
thp->fps = av_d2q(av_int2flt(avio_rb32(pb)), INT_MAX);
thp->framecnt = avio_rb32(pb);
thp->first_framesz = avio_rb32(pb);
avio_rb32(pb); /* Data size. */
thp->compoff = avio_rb32(pb);
avio_rb32(pb); /* offsetDataOffset. */
thp->first_frame = avio_rb32(pb);
thp->last_frame = avio_rb32(pb);
thp->next_framesz = thp->first_framesz;
thp->next_frame = thp->first_frame;
/* Read the component structure. */
avio_seek (pb, thp->compoff, SEEK_SET);
thp->compcount = avio_rb32(pb);
/* Read the list of component types. */
avio_read(pb, thp->components, 16);
for (i = 0; i < thp->compcount; i++) {
if (thp->components[i] == 0) {
if (thp->vst != 0)
break;
/* Video component. */
st = av_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
/* The denominator and numerator are switched because 1/fps
is required. */
av_set_pts_info(st, 64, thp->fps.den, thp->fps.num);
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = CODEC_ID_THP;
st->codec->codec_tag = 0; /* no fourcc */
st->codec->width = avio_rb32(pb);
st->codec->height = avio_rb32(pb);
st->codec->sample_rate = av_q2d(thp->fps);
thp->vst = st;
thp->video_stream_index = st->index;
if (thp->version == 0x11000)
avio_rb32(pb); /* Unknown. */
} else if (thp->components[i] == 1) {
if (thp->has_audio != 0)
break;
/* Audio component. */
st = av_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = CODEC_ID_ADPCM_THP;
st->codec->codec_tag = 0; /* no fourcc */
st->codec->channels = avio_rb32(pb); /* numChannels. */
st->codec->sample_rate = avio_rb32(pb); /* Frequency. */
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
thp->audio_stream_index = st->index;
thp->has_audio = 1;
}
}
return 0;
}
/* aiff input */
static int aiff_read_header(AVFormatContext *s)
{
int ret, size, filesize;
int64_t offset = 0, position;
uint32_t tag;
unsigned version = AIFF_C_VERSION1;
AVIOContext *pb = s->pb;
AVStream * st;
AIFFInputContext *aiff = s->priv_data;
ID3v2ExtraMeta *id3v2_extra_meta = NULL;
/* check FORM header */
filesize = get_tag(pb, &tag);
if (filesize < 0 || tag != MKTAG('F', 'O', 'R', 'M'))
return AVERROR_INVALIDDATA;
/* AIFF data type */
tag = avio_rl32(pb);
if (tag == MKTAG('A', 'I', 'F', 'F')) /* Got an AIFF file */
version = AIFF;
else if (tag != MKTAG('A', 'I', 'F', 'C')) /* An AIFF-C file then */
return AVERROR_INVALIDDATA;
filesize -= 4;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
while (filesize > 0) {
/* parse different chunks */
size = get_tag(pb, &tag);
if (size < 0)
return size;
filesize -= size + 8;
switch (tag) {
case MKTAG('C', 'O', 'M', 'M'): /* Common chunk */
/* Then for the complete header info */
st->nb_frames = get_aiff_header(s, size, version);
if (st->nb_frames < 0)
return st->nb_frames;
if (offset > 0) // COMM is after SSND
goto got_sound;
break;
case MKTAG('I', 'D', '3', ' '):
position = avio_tell(pb);
ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
if (id3v2_extra_meta)
if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0) {
ff_id3v2_free_extra_meta(&id3v2_extra_meta);
return ret;
}
ff_id3v2_free_extra_meta(&id3v2_extra_meta);
if (position + size > avio_tell(pb))
avio_skip(pb, position + size - avio_tell(pb));
break;
case MKTAG('F', 'V', 'E', 'R'): /* Version chunk */
version = avio_rb32(pb);
break;
case MKTAG('N', 'A', 'M', 'E'): /* Sample name chunk */
get_meta(s, "title" , size);
break;
case MKTAG('A', 'U', 'T', 'H'): /* Author chunk */
get_meta(s, "author" , size);
break;
case MKTAG('(', 'c', ')', ' '): /* Copyright chunk */
get_meta(s, "copyright", size);
break;
case MKTAG('A', 'N', 'N', 'O'): /* Annotation chunk */
get_meta(s, "comment" , size);
break;
case MKTAG('S', 'S', 'N', 'D'): /* Sampled sound chunk */
aiff->data_end = avio_tell(pb) + size;
offset = avio_rb32(pb); /* Offset of sound data */
avio_rb32(pb); /* BlockSize... don't care */
offset += avio_tell(pb); /* Compute absolute data offset */
if (st->codec->block_align && !pb->seekable) /* Assume COMM already parsed */
goto got_sound;
if (!pb->seekable) {
av_log(s, AV_LOG_ERROR, "file is not seekable\n");
return -1;
}
avio_skip(pb, size - 8);
break;
case MKTAG('w', 'a', 'v', 'e'):
if ((uint64_t)size > (1<<30))
return -1;
if (ff_get_extradata(st->codec, pb, size) < 0)
return AVERROR(ENOMEM);
if (st->codec->codec_id == AV_CODEC_ID_QDM2 && size>=12*4 && !st->codec->block_align) {
st->codec->block_align = AV_RB32(st->codec->extradata+11*4);
aiff->block_duration = AV_RB32(st->codec->extradata+9*4);
} else if (st->codec->codec_id == AV_CODEC_ID_QCELP) {
char rate = 0;
if (size >= 25)
rate = st->codec->extradata[24];
switch (rate) {
case 'H': // RATE_HALF
st->codec->block_align = 17;
break;
case 'F': // RATE_FULL
default:
st->codec->block_align = 35;
}
aiff->block_duration = 160;
st->codec->bit_rate = st->codec->sample_rate * (st->codec->block_align << 3) /
aiff->block_duration;
}
break;
case MKTAG('C','H','A','N'):
if(ff_mov_read_chan(s, pb, st, size) < 0)
return AVERROR_INVALIDDATA;
break;
default: /* Jump */
if (size & 1) /* Always even aligned */
size++;
avio_skip(pb, size);
}
}
got_sound:
if (!st->codec->block_align) {
av_log(s, AV_LOG_ERROR, "could not find COMM tag or invalid block_align value\n");
return -1;
}
/* Now positioned, get the sound data start and end */
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
st->start_time = 0;
st->duration = st->nb_frames * aiff->block_duration;
/* Position the stream at the first block */
avio_seek(pb, offset, SEEK_SET);
return 0;
}
static int rm_read_header(AVFormatContext *s)
{
RMDemuxContext *rm = s->priv_data;
AVStream *st;
AVIOContext *pb = s->pb;
unsigned int tag;
int tag_size;
unsigned int start_time, duration;
unsigned int data_off = 0, indx_off = 0;
char buf[128];
int flags = 0;
tag = avio_rl32(pb);
if (tag == MKTAG('.', 'r', 'a', 0xfd)) {
/* very old .ra format */
return rm_read_header_old(s);
} else if (tag != MKTAG('.', 'R', 'M', 'F')) {
return AVERROR(EIO);
}
tag_size = avio_rb32(pb);
avio_skip(pb, tag_size - 8);
for(;;) {
if (pb->eof_reached)
return -1;
tag = avio_rl32(pb);
tag_size = avio_rb32(pb);
avio_rb16(pb);
av_dlog(s, "tag=%c%c%c%c (%08x) size=%d\n",
(tag ) & 0xff,
(tag >> 8) & 0xff,
(tag >> 16) & 0xff,
(tag >> 24) & 0xff,
tag,
tag_size);
if (tag_size < 10 && tag != MKTAG('D', 'A', 'T', 'A'))
return -1;
switch(tag) {
case MKTAG('P', 'R', 'O', 'P'):
/* file header */
avio_rb32(pb); /* max bit rate */
avio_rb32(pb); /* avg bit rate */
avio_rb32(pb); /* max packet size */
avio_rb32(pb); /* avg packet size */
avio_rb32(pb); /* nb packets */
avio_rb32(pb); /* duration */
avio_rb32(pb); /* preroll */
indx_off = avio_rb32(pb); /* index offset */
data_off = avio_rb32(pb); /* data offset */
avio_rb16(pb); /* nb streams */
flags = avio_rb16(pb); /* flags */
break;
case MKTAG('C', 'O', 'N', 'T'):
rm_read_metadata(s, pb, 1);
break;
case MKTAG('M', 'D', 'P', 'R'):
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->id = avio_rb16(pb);
avio_rb32(pb); /* max bit rate */
st->codec->bit_rate = avio_rb32(pb); /* bit rate */
avio_rb32(pb); /* max packet size */
avio_rb32(pb); /* avg packet size */
start_time = avio_rb32(pb); /* start time */
avio_rb32(pb); /* preroll */
duration = avio_rb32(pb); /* duration */
st->start_time = start_time;
st->duration = duration;
get_str8(pb, buf, sizeof(buf)); /* desc */
get_str8(pb, buf, sizeof(buf)); /* mimetype */
st->codec->codec_type = AVMEDIA_TYPE_DATA;
st->priv_data = ff_rm_alloc_rmstream();
if (ff_rm_read_mdpr_codecdata(s, s->pb, st, st->priv_data,
avio_rb32(pb)) < 0)
return -1;
break;
case MKTAG('D', 'A', 'T', 'A'):
goto header_end;
default:
/* unknown tag: skip it */
avio_skip(pb, tag_size - 10);
break;
}
}
header_end:
rm->nb_packets = avio_rb32(pb); /* number of packets */
if (!rm->nb_packets && (flags & 4))
rm->nb_packets = 3600 * 25;
avio_rb32(pb); /* next data header */
if (!data_off)
data_off = avio_tell(pb) - 18;
if (indx_off && pb->seekable && !(s->flags & AVFMT_FLAG_IGNIDX) &&
avio_seek(pb, indx_off, SEEK_SET) >= 0) {
rm_read_index(s);
avio_seek(pb, data_off + 18, SEEK_SET);
}
return 0;
}
/**
* read rl2 header data and setup the avstreams
* @param s demuxer context
* @return 0 on success, AVERROR otherwise
*/
static av_cold int rl2_read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
AVStream *st;
unsigned int frame_count;
unsigned int audio_frame_counter = 0;
unsigned int video_frame_counter = 0;
unsigned int back_size;
unsigned short sound_rate;
unsigned short rate;
unsigned short channels;
unsigned short def_sound_size;
unsigned int signature;
unsigned int pts_den = 11025; /* video only case */
unsigned int pts_num = 1103;
unsigned int* chunk_offset = NULL;
int* chunk_size = NULL;
int* audio_size = NULL;
int i;
int ret = 0;
avio_skip(pb,4); /* skip FORM tag */
back_size = avio_rl32(pb); /**< get size of the background frame */
signature = avio_rb32(pb);
avio_skip(pb, 4); /* data size */
frame_count = avio_rl32(pb);
/* disallow back_sizes and frame_counts that may lead to overflows later */
if(back_size > INT_MAX/2 || frame_count > INT_MAX / sizeof(uint32_t))
return AVERROR_INVALIDDATA;
avio_skip(pb, 2); /* encoding method */
sound_rate = avio_rl16(pb);
rate = avio_rl16(pb);
channels = avio_rl16(pb);
def_sound_size = avio_rl16(pb);
/** setup video stream */
st = avformat_new_stream(s, NULL);
if(!st)
return AVERROR(ENOMEM);
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
st->codecpar->codec_id = AV_CODEC_ID_RL2;
st->codecpar->codec_tag = 0; /* no fourcc */
st->codecpar->width = 320;
st->codecpar->height = 200;
/** allocate and fill extradata */
st->codecpar->extradata_size = EXTRADATA1_SIZE;
if(signature == RLV3_TAG && back_size > 0)
st->codecpar->extradata_size += back_size;
if(ff_get_extradata(s, st->codecpar, pb, st->codecpar->extradata_size) < 0)
return AVERROR(ENOMEM);
/** setup audio stream if present */
if(sound_rate){
if (!channels || channels > 42) {
av_log(s, AV_LOG_ERROR, "Invalid number of channels: %d\n", channels);
return AVERROR_INVALIDDATA;
}
pts_num = def_sound_size;
pts_den = rate;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
st->codecpar->codec_id = AV_CODEC_ID_PCM_U8;
st->codecpar->codec_tag = 1;
st->codecpar->channels = channels;
st->codecpar->bits_per_coded_sample = 8;
st->codecpar->sample_rate = rate;
st->codecpar->bit_rate = st->codecpar->channels * st->codecpar->sample_rate *
st->codecpar->bits_per_coded_sample;
st->codecpar->block_align = st->codecpar->channels *
st->codecpar->bits_per_coded_sample / 8;
avpriv_set_pts_info(st,32,1,rate);
}
avpriv_set_pts_info(s->streams[0], 32, pts_num, pts_den);
chunk_size = av_malloc(frame_count * sizeof(uint32_t));
audio_size = av_malloc(frame_count * sizeof(uint32_t));
chunk_offset = av_malloc(frame_count * sizeof(uint32_t));
if(!chunk_size || !audio_size || !chunk_offset){
av_free(chunk_size);
av_free(audio_size);
av_free(chunk_offset);
return AVERROR(ENOMEM);
}
/** read offset and size tables */
for(i=0; i < frame_count;i++) {
if (avio_feof(pb))
return AVERROR_INVALIDDATA;
chunk_size[i] = avio_rl32(pb);
}
for(i=0; i < frame_count;i++) {
if (avio_feof(pb))
return AVERROR_INVALIDDATA;
chunk_offset[i] = avio_rl32(pb);
}
for(i=0; i < frame_count;i++) {
if (avio_feof(pb))
return AVERROR_INVALIDDATA;
audio_size[i] = avio_rl32(pb) & 0xFFFF;
}
/** build the sample index */
for(i=0;i<frame_count;i++){
if(chunk_size[i] < 0 || audio_size[i] > chunk_size[i]){
ret = AVERROR_INVALIDDATA;
break;
}
if(sound_rate && audio_size[i]){
av_add_index_entry(s->streams[1], chunk_offset[i],
audio_frame_counter,audio_size[i], 0, AVINDEX_KEYFRAME);
audio_frame_counter += audio_size[i] / channels;
}
av_add_index_entry(s->streams[0], chunk_offset[i] + audio_size[i],
video_frame_counter,chunk_size[i]-audio_size[i],0,AVINDEX_KEYFRAME);
++video_frame_counter;
}
av_free(chunk_size);
av_free(audio_size);
av_free(chunk_offset);
return ret;
}
static int rsd_read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
int i, ret, version, start = 0x800;
AVCodecContext *codec;
AVStream *st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
avio_skip(pb, 3); // "RSD"
version = avio_r8(pb) - '0';
codec = st->codec;
codec->codec_type = AVMEDIA_TYPE_AUDIO;
codec->codec_tag = avio_rl32(pb);
codec->codec_id = ff_codec_get_id(rsd_tags, codec->codec_tag);
if (!codec->codec_id) {
char tag_buf[32];
av_get_codec_tag_string(tag_buf, sizeof(tag_buf), codec->codec_tag);
for (i=0; i < FF_ARRAY_ELEMS(rsd_unsupported_tags); i++) {
if (codec->codec_tag == rsd_unsupported_tags[i]) {
avpriv_request_sample(s, "Codec tag: %s", tag_buf);
return AVERROR_PATCHWELCOME;
}
}
av_log(s, AV_LOG_ERROR, "Unknown codec tag: %s\n", tag_buf);
return AVERROR_INVALIDDATA;
}
codec->channels = avio_rl32(pb);
if (codec->channels <= 0 || codec->channels > INT_MAX / 36) {
av_log(s, AV_LOG_ERROR, "Invalid number of channels: %d\n", codec->channels);
return AVERROR_INVALIDDATA;
}
avio_skip(pb, 4); // Bit depth
codec->sample_rate = avio_rl32(pb);
if (!codec->sample_rate)
return AVERROR_INVALIDDATA;
avio_skip(pb, 4); // Unknown
switch (codec->codec_id) {
case AV_CODEC_ID_XMA2:
codec->block_align = 2048;
ff_alloc_extradata(codec, 34);
if (!codec->extradata)
return AVERROR(ENOMEM);
memset(codec->extradata, 0, 34);
break;
case AV_CODEC_ID_ADPCM_PSX:
codec->block_align = 16 * codec->channels;
if (pb->seekable)
st->duration = av_get_audio_frame_duration(codec, avio_size(pb) - start);
break;
case AV_CODEC_ID_ADPCM_IMA_RAD:
codec->block_align = 20 * codec->channels;
if (pb->seekable)
st->duration = av_get_audio_frame_duration(codec, avio_size(pb) - start);
break;
case AV_CODEC_ID_ADPCM_IMA_WAV:
if (version == 2)
start = avio_rl32(pb);
codec->bits_per_coded_sample = 4;
codec->block_align = 36 * codec->channels;
if (pb->seekable)
st->duration = av_get_audio_frame_duration(codec, avio_size(pb) - start);
break;
case AV_CODEC_ID_ADPCM_THP_LE:
/* RSD3GADP is mono, so only alloc enough memory
to store the coeff table for a single channel. */
start = avio_rl32(pb);
if ((ret = ff_get_extradata(codec, s->pb, 32)) < 0)
return ret;
if (pb->seekable)
st->duration = av_get_audio_frame_duration(codec, avio_size(pb) - start);
break;
case AV_CODEC_ID_ADPCM_THP:
codec->block_align = 8 * codec->channels;
avio_skip(s->pb, 0x1A4 - avio_tell(s->pb));
if ((ret = ff_alloc_extradata(st->codec, 32 * st->codec->channels)) < 0)
return ret;
for (i = 0; i < st->codec->channels; i++) {
avio_read(s->pb, st->codec->extradata + 32 * i, 32);
avio_skip(s->pb, 8);
}
if (pb->seekable)
st->duration = (avio_size(pb) - start) / (8 * st->codec->channels) * 14;
break;
case AV_CODEC_ID_PCM_S16LE:
case AV_CODEC_ID_PCM_S16BE:
if (version != 4)
start = avio_rl32(pb);
if (pb->seekable)
st->duration = (avio_size(pb) - start) / 2 / codec->channels;
break;
}
avio_skip(pb, start - avio_tell(pb));
if (codec->codec_id == AV_CODEC_ID_XMA2) {
avio_skip(pb, avio_rb32(pb) + avio_rb32(pb));
st->duration = avio_rb32(pb);
}
avpriv_set_pts_info(st, 64, 1, codec->sample_rate);
return 0;
}
static int ea_read_packet(AVFormatContext *s, AVPacket *pkt)
{
EaDemuxContext *ea = s->priv_data;
AVIOContext *pb = s->pb;
int partial_packet = 0;
unsigned int chunk_type, chunk_size;
int ret = 0, packet_read = 0, key = 0;
int av_uninit(num_samples);
while (!packet_read || partial_packet) {
chunk_type = avio_rl32(pb);
chunk_size = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb);
if (chunk_size < 8)
return AVERROR_INVALIDDATA;
chunk_size -= 8;
switch (chunk_type) {
/* audio data */
case ISNh_TAG:
/* header chunk also contains data; skip over the header portion */
if (chunk_size < 32)
return AVERROR_INVALIDDATA;
avio_skip(pb, 32);
chunk_size -= 32;
case ISNd_TAG:
case SCDl_TAG:
case SNDC_TAG:
case SDEN_TAG:
if (!ea->audio_codec) {
avio_skip(pb, chunk_size);
break;
} else if (ea->audio_codec == AV_CODEC_ID_PCM_S16LE_PLANAR ||
ea->audio_codec == AV_CODEC_ID_MP3) {
num_samples = avio_rl32(pb);
avio_skip(pb, 8);
chunk_size -= 12;
}
if (partial_packet) {
avpriv_request_sample(s, "video header followed by audio packet");
av_free_packet(pkt);
partial_packet = 0;
}
if (!chunk_size)
continue;
ret = av_get_packet(pb, pkt, chunk_size);
if (ret < 0)
return ret;
pkt->stream_index = ea->audio_stream_index;
switch (ea->audio_codec) {
case AV_CODEC_ID_ADPCM_EA:
case AV_CODEC_ID_ADPCM_EA_R1:
case AV_CODEC_ID_ADPCM_EA_R2:
case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
case AV_CODEC_ID_ADPCM_EA_R3:
if (pkt->size < 4) {
av_log(s, AV_LOG_ERROR, "Packet is too short\n");
av_free_packet(pkt);
return AVERROR_INVALIDDATA;
}
if (ea->audio_codec == AV_CODEC_ID_ADPCM_EA_R3)
pkt->duration = AV_RB32(pkt->data);
else
pkt->duration = AV_RL32(pkt->data);
break;
case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
pkt->duration = ret * 2 / ea->num_channels;
break;
case AV_CODEC_ID_PCM_S16LE_PLANAR:
case AV_CODEC_ID_MP3:
pkt->duration = num_samples;
break;
default:
pkt->duration = chunk_size / (ea->bytes * ea->num_channels);
}
packet_read = 1;
break;
/* ending tag */
case 0:
case ISNe_TAG:
case SCEl_TAG:
case SEND_TAG:
case SEEN_TAG:
ret = AVERROR(EIO);
packet_read = 1;
break;
case MVIh_TAG:
case kVGT_TAG:
case pQGT_TAG:
case TGQs_TAG:
case MADk_TAG:
key = AV_PKT_FLAG_KEY;
case MVIf_TAG:
case fVGT_TAG:
case MADm_TAG:
case MADe_TAG:
avio_seek(pb, -8, SEEK_CUR); // include chunk preamble
chunk_size += 8;
goto get_video_packet;
case mTCD_TAG:
if (chunk_size < 8)
return AVERROR_INVALIDDATA;
avio_skip(pb, 8); // skip ea DCT header
chunk_size -= 8;
goto get_video_packet;
case MV0K_TAG:
case MPCh_TAG:
case pIQT_TAG:
key = AV_PKT_FLAG_KEY;
case MV0F_TAG:
get_video_packet:
if (!chunk_size)
continue;
if (partial_packet) {
ret = av_append_packet(pb, pkt, chunk_size);
} else
ret = av_get_packet(pb, pkt, chunk_size);
if (ret < 0) {
packet_read = 1;
break;
}
partial_packet = chunk_type == MVIh_TAG;
pkt->stream_index = ea->video_stream_index;
pkt->flags |= key;
packet_read = 1;
break;
default:
avio_skip(pb, chunk_size);
break;
}
}
if (ret < 0 && partial_packet)
av_free_packet(pkt);
return ret;
}
static int smjpeg_read_header(AVFormatContext *s)
{
SMJPEGContext *sc = s->priv_data;
AVStream *ast = NULL, *vst = NULL;
AVIOContext *pb = s->pb;
uint32_t version, htype, hlength, duration;
char *comment;
avio_skip(pb, 8); // magic
version = avio_rb32(pb);
if (version)
avpriv_request_sample(s, "Unknown version %"PRIu32, version);
duration = avio_rb32(pb); // in msec
while (!avio_feof(pb)) {
htype = avio_rl32(pb);
switch (htype) {
case SMJPEG_TXT:
hlength = avio_rb32(pb);
if (!hlength || hlength > 512)
return AVERROR_INVALIDDATA;
comment = av_malloc(hlength + 1);
if (!comment)
return AVERROR(ENOMEM);
if (avio_read(pb, comment, hlength) != hlength) {
av_freep(&comment);
av_log(s, AV_LOG_ERROR, "error when reading comment\n");
return AVERROR_INVALIDDATA;
}
comment[hlength] = 0;
av_dict_set(&s->metadata, "comment", comment,
AV_DICT_DONT_STRDUP_VAL);
break;
case SMJPEG_SND:
if (ast) {
avpriv_request_sample(s, "Multiple audio streams");
return AVERROR_PATCHWELCOME;
}
hlength = avio_rb32(pb);
if (hlength < 8)
return AVERROR_INVALIDDATA;
ast = avformat_new_stream(s, 0);
if (!ast)
return AVERROR(ENOMEM);
ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
ast->codec->sample_rate = avio_rb16(pb);
ast->codec->bits_per_coded_sample = avio_r8(pb);
ast->codec->channels = avio_r8(pb);
ast->codec->codec_tag = avio_rl32(pb);
ast->codec->codec_id = ff_codec_get_id(ff_codec_smjpeg_audio_tags,
ast->codec->codec_tag);
ast->duration = duration;
sc->audio_stream_index = ast->index;
avpriv_set_pts_info(ast, 32, 1, 1000);
avio_skip(pb, hlength - 8);
break;
case SMJPEG_VID:
if (vst) {
avpriv_request_sample(s, "Multiple video streams");
return AVERROR_INVALIDDATA;
}
hlength = avio_rb32(pb);
if (hlength < 12)
return AVERROR_INVALIDDATA;
vst = avformat_new_stream(s, 0);
if (!vst)
return AVERROR(ENOMEM);
vst->nb_frames = avio_rb32(pb);
vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
vst->codec->width = avio_rb16(pb);
vst->codec->height = avio_rb16(pb);
vst->codec->codec_tag = avio_rl32(pb);
vst->codec->codec_id = ff_codec_get_id(ff_codec_smjpeg_video_tags,
vst->codec->codec_tag);
vst->duration = duration;
sc->video_stream_index = vst->index;
avpriv_set_pts_info(vst, 32, 1, 1000);
avio_skip(pb, hlength - 12);
break;
case SMJPEG_HEND:
return 0;
default:
av_log(s, AV_LOG_ERROR, "unknown header %"PRIx32"\n", htype);
return AVERROR_INVALIDDATA;
}
}
return AVERROR_EOF;
}
static int r3d_read_reda(AVFormatContext *s, AVPacket *pkt, Atom *atom)
{
R3DContext *r3d = s->priv_data;
AVStream *st;
int av_unused tmp, tmp2;
int samples, size;
int64_t pos = avio_tell(s->pb);
unsigned dts;
int ret;
if (s->nb_streams < 2) {
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_PCM_S32BE;
st->codec->channels = r3d->audio_channels;
avpriv_set_pts_info(st, 32, 1, s->streams[0]->time_base.den);
} else {
st = s->streams[1];
}
dts = avio_rb32(s->pb);
st->codec->sample_rate = avio_rb32(s->pb);
if (st->codec->sample_rate <= 0) {
av_log(s, AV_LOG_ERROR, "Bad sample rate\n");
return AVERROR_INVALIDDATA;
}
samples = avio_rb32(s->pb);
tmp = avio_rb32(s->pb);
av_log(s, AV_LOG_TRACE, "packet num %d\n", tmp);
tmp = avio_rb16(s->pb); // unknown
av_log(s, AV_LOG_TRACE, "unknown %d\n", tmp);
tmp = avio_r8(s->pb); // major version
tmp2 = avio_r8(s->pb); // minor version
av_log(s, AV_LOG_TRACE, "version %d.%d\n", tmp, tmp2);
tmp = avio_rb32(s->pb); // unknown
av_log(s, AV_LOG_TRACE, "unknown %d\n", tmp);
size = atom->size - 8 - (avio_tell(s->pb) - pos);
if (size < 0)
return -1;
ret = av_get_packet(s->pb, pkt, size);
if (ret < 0) {
av_log(s, AV_LOG_ERROR, "error reading audio packet\n");
return ret;
}
pkt->stream_index = 1;
pkt->dts = dts;
if (st->codec->sample_rate)
pkt->duration = av_rescale(samples, st->time_base.den, st->codec->sample_rate);
av_log(s, AV_LOG_TRACE, "pkt dts %"PRId64" duration %"PRId64" samples %d sample rate %d\n",
pkt->dts, pkt->duration, samples, st->codec->sample_rate);
return 0;
}
int ff_get_qtpalette(int codec_id, AVIOContext *pb, uint32_t *palette)
{
int tmp, bit_depth, color_table_id, greyscale, i;
avio_seek(pb, 82, SEEK_CUR);
/* Get the bit depth and greyscale state */
tmp = avio_rb16(pb);
bit_depth = tmp & 0x1F;
greyscale = tmp & 0x20;
/* Get the color table ID */
color_table_id = avio_rb16(pb);
/* Do not create a greyscale palette for Cinepak */
if (greyscale && codec_id == AV_CODEC_ID_CINEPAK)
return 0;
/* If the depth is 1, 2, 4, or 8 bpp, file is palettized. */
if ((bit_depth == 1 || bit_depth == 2 || bit_depth == 4 || bit_depth == 8)) {
uint32_t color_count, color_start, color_end;
uint32_t r, g, b;
/* Ignore the greyscale bit for 1-bit video and sample
* descriptions containing a color table. */
if (greyscale && bit_depth > 1 && color_table_id) {
int color_index, color_dec;
/* compute the greyscale palette */
color_count = 1 << bit_depth;
color_index = 255;
color_dec = 256 / (color_count - 1);
for (i = 0; i < color_count; i++) {
r = g = b = color_index;
palette[i] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
color_index -= color_dec;
if (color_index < 0)
color_index = 0;
}
} else if (color_table_id) {
/* The color table ID is non-zero. Interpret this as
* being -1, which means use the default Macintosh
* color table */
const uint8_t *color_table;
color_count = 1 << bit_depth;
if (bit_depth == 1)
color_table = ff_qt_default_palette_2;
else if (bit_depth == 2)
color_table = ff_qt_default_palette_4;
else if (bit_depth == 4)
color_table = ff_qt_default_palette_16;
else
color_table = ff_qt_default_palette_256;
for (i = 0; i < color_count; i++) {
r = color_table[i * 3 + 0];
g = color_table[i * 3 + 1];
b = color_table[i * 3 + 2];
palette[i] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
}
} else {
/* The color table ID is 0; the color table is in the sample
* description */
color_start = avio_rb32(pb);
avio_rb16(pb); /* color table flags */
color_end = avio_rb16(pb);
if ((color_start <= 255) && (color_end <= 255)) {
for (i = color_start; i <= color_end; i++) {
/* Each color is made of four unsigned 16 bit integers. The
* first integer is 0, the remaining integers are the red,
* the green and the blue values. We only use the top 8 bit. */
avio_skip(pb, 2);
r = avio_r8(pb);
avio_r8(pb);
g = avio_r8(pb);
avio_r8(pb);
b = avio_r8(pb);
avio_r8(pb);
palette[i] = (0xFFU << 24) | (r << 16) | (g << 8) | (b);
}
}
}
return 1;
}
return 0;
}
static int read_header(AVFormatContext *s)
{
BRSTMDemuxContext *b = s->priv_data;
int bom, major, minor, codec, chunk;
int64_t pos, h1offset, toffset;
uint32_t size, start, asize;
AVStream *st;
int ret = AVERROR_EOF;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
avio_skip(s->pb, 4);
bom = avio_rb16(s->pb);
if (bom != 0xFEFF && bom != 0xFFFE) {
av_log(s, AV_LOG_ERROR, "invalid byte order: %X\n", bom);
return AVERROR_INVALIDDATA;
}
if (bom == 0xFFFE) {
avpriv_request_sample(s, "little endian byte order");
return AVERROR_PATCHWELCOME;
}
major = avio_r8(s->pb);
minor = avio_r8(s->pb);
avio_skip(s->pb, 4); // size of file
size = avio_rb16(s->pb);
if (size < 14)
return AVERROR_INVALIDDATA;
avio_skip(s->pb, size - 14);
pos = avio_tell(s->pb);
if (avio_rl32(s->pb) != MKTAG('H','E','A','D'))
return AVERROR_INVALIDDATA;
size = avio_rb32(s->pb);
if (size < 256)
return AVERROR_INVALIDDATA;
avio_skip(s->pb, 4); // unknown
h1offset = avio_rb32(s->pb);
if (h1offset > size)
return AVERROR_INVALIDDATA;
avio_skip(s->pb, 12);
toffset = avio_rb32(s->pb) + 16LL;
if (toffset > size)
return AVERROR_INVALIDDATA;
avio_skip(s->pb, pos + h1offset + 8 - avio_tell(s->pb));
codec = avio_r8(s->pb);
switch (codec) {
case 0: codec = AV_CODEC_ID_PCM_S8_PLANAR; break;
case 1: codec = AV_CODEC_ID_PCM_S16BE_PLANAR; break;
case 2: codec = AV_CODEC_ID_ADPCM_THP; break;
default:
avpriv_request_sample(s, "codec %d", codec);
return AVERROR_PATCHWELCOME;
}
avio_skip(s->pb, 1); // loop flag
st->codec->codec_id = codec;
st->codec->channels = avio_r8(s->pb);
if (!st->codec->channels)
return AVERROR_INVALIDDATA;
avio_skip(s->pb, 1); // padding
st->codec->sample_rate = avio_rb16(s->pb);
if (!st->codec->sample_rate)
return AVERROR_INVALIDDATA;
avio_skip(s->pb, 2); // padding
avio_skip(s->pb, 4); // loop start sample
st->start_time = 0;
st->duration = avio_rb32(s->pb);
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
start = avio_rb32(s->pb);
b->current_block = 0;
b->block_count = avio_rb32(s->pb);
if (b->block_count > UINT16_MAX) {
av_log(s, AV_LOG_WARNING, "too many blocks: %u\n", b->block_count);
return AVERROR_INVALIDDATA;
}
b->block_size = avio_rb32(s->pb);
if (b->block_size > UINT16_MAX / st->codec->channels)
return AVERROR_INVALIDDATA;
b->block_size *= st->codec->channels;
b->samples_per_block = avio_rb32(s->pb);
b->last_block_used_bytes = avio_rb32(s->pb);
if (b->last_block_used_bytes > UINT16_MAX / st->codec->channels)
return AVERROR_INVALIDDATA;
b->last_block_used_bytes *= st->codec->channels;
avio_skip(s->pb, 4); // last block samples
avio_skip(s->pb, 4); // last block size
if (codec == AV_CODEC_ID_ADPCM_THP) {
int ch;
avio_skip(s->pb, pos + toffset - avio_tell(s->pb));
toffset = avio_rb32(s->pb) + 16LL;
if (toffset > size)
return AVERROR_INVALIDDATA;
avio_skip(s->pb, pos + toffset - avio_tell(s->pb));
b->table = av_mallocz(32 * st->codec->channels);
if (!b->table)
return AVERROR(ENOMEM);
for (ch = 0; ch < st->codec->channels; ch++) {
if (avio_read(s->pb, b->table + ch * 32, 32) != 32) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
avio_skip(s->pb, 24);
}
}
if (size < (avio_tell(s->pb) - pos)) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
avio_skip(s->pb, size - (avio_tell(s->pb) - pos));
while (!avio_feof(s->pb)) {
chunk = avio_rl32(s->pb);
size = avio_rb32(s->pb);
if (size < 8) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
size -= 8;
switch (chunk) {
case MKTAG('A','D','P','C'):
if (codec != AV_CODEC_ID_ADPCM_THP)
goto skip;
asize = b->block_count * st->codec->channels * 4;
if (size < asize) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
if (b->adpc) {
av_log(s, AV_LOG_WARNING, "skipping additional ADPC chunk\n");
goto skip;
} else {
b->adpc = av_mallocz(asize);
if (!b->adpc) {
ret = AVERROR(ENOMEM);
goto fail;
}
avio_read(s->pb, b->adpc, asize);
avio_skip(s->pb, size - asize);
}
break;
case MKTAG('D','A','T','A'):
if ((start < avio_tell(s->pb)) ||
(!b->adpc && codec == AV_CODEC_ID_ADPCM_THP)) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
avio_skip(s->pb, start - avio_tell(s->pb));
if (major != 1 || minor)
avpriv_request_sample(s, "Version %d.%d", major, minor);
return 0;
default:
av_log(s, AV_LOG_WARNING, "skipping unknown chunk: %X\n", chunk);
skip:
avio_skip(s->pb, size);
}
}
fail:
read_close(s);
return ret;
}
int
ff_rm_read_mdpr_codecdata (AVFormatContext *s, AVIOContext *pb,
AVStream *st, RMStream *rst, int codec_data_size, const uint8_t *mime)
{
unsigned int v;
int size;
int64_t codec_pos;
int ret;
avpriv_set_pts_info(st, 64, 1, 1000);
codec_pos = avio_tell(pb);
v = avio_rb32(pb);
if (v == MKTAG(0xfd, 'a', 'r', '.')) {
/* ra type header */
if (rm_read_audio_stream_info(s, pb, st, rst, 0))
return -1;
} else if (v == MKBETAG('L', 'S', 'D', ':')) {
avio_seek(pb, -4, SEEK_CUR);
if ((ret = rm_read_extradata(pb, st->codec, codec_data_size)) < 0)
return ret;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_tag = AV_RL32(st->codec->extradata);
st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
st->codec->codec_tag);
} else if(mime && !strcmp(mime, "logical-fileinfo")){
int stream_count, rule_count, property_count, i;
ff_free_stream(s, st);
if (avio_rb16(pb) != 0) {
av_log(s, AV_LOG_WARNING, "Unsupported version\n");
goto skip;
}
stream_count = avio_rb16(pb);
avio_skip(pb, 6*stream_count);
rule_count = avio_rb16(pb);
avio_skip(pb, 2*rule_count);
property_count = avio_rb16(pb);
for(i=0; i<property_count; i++){
uint8_t name[128], val[128];
avio_rb32(pb);
if (avio_rb16(pb) != 0) {
av_log(s, AV_LOG_WARNING, "Unsupported Name value property version\n");
goto skip; //FIXME skip just this one
}
get_str8(pb, name, sizeof(name));
switch(avio_rb32(pb)) {
case 2: get_strl(pb, val, sizeof(val), avio_rb16(pb));
av_dict_set(&s->metadata, name, val, 0);
break;
default: avio_skip(pb, avio_rb16(pb));
}
}
} else {
int fps;
if (avio_rl32(pb) != MKTAG('V', 'I', 'D', 'O')) {
fail1:
av_log(s, AV_LOG_WARNING, "Unsupported stream type %08x\n", v);
goto skip;
}
st->codec->codec_tag = avio_rl32(pb);
st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
st->codec->codec_tag);
av_dlog(s, "%X %X\n", st->codec->codec_tag, MKTAG('R', 'V', '2', '0'));
if (st->codec->codec_id == AV_CODEC_ID_NONE)
goto fail1;
st->codec->width = avio_rb16(pb);
st->codec->height = avio_rb16(pb);
avio_skip(pb, 2); // looks like bits per sample
avio_skip(pb, 4); // always zero?
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
fps = avio_rb32(pb);
if ((ret = rm_read_extradata(pb, st->codec, codec_data_size - (avio_tell(pb) - codec_pos))) < 0)
return ret;
av_reduce(&st->avg_frame_rate.den, &st->avg_frame_rate.num,
0x10000, fps, (1 << 30) - 1);
#if FF_API_R_FRAME_RATE
st->r_frame_rate = st->avg_frame_rate;
#endif
}
skip:
/* skip codec info */
size = avio_tell(pb) - codec_pos;
avio_skip(pb, codec_data_size - size);
return 0;
}
static int read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
AVIOContext *pb = s->pb;
CaffContext *caf = s->priv_data;
AVStream *st;
uint32_t tag = 0;
int found_data, ret;
int64_t size;
avio_skip(pb, 8); /* magic, version, file flags */
/* audio description chunk */
if (avio_rb32(pb) != MKBETAG('d','e','s','c')) {
av_log(s, AV_LOG_ERROR, "desc chunk not present\n");
return AVERROR_INVALIDDATA;
}
size = avio_rb64(pb);
if (size != 32)
return AVERROR_INVALIDDATA;
ret = read_desc_chunk(s);
if (ret)
return ret;
st = s->streams[0];
/* parse each chunk */
found_data = 0;
while (!url_feof(pb)) {
/* stop at data chunk if seeking is not supported or
data chunk size is unknown */
if (found_data && (caf->data_size < 0 || !pb->seekable))
break;
tag = avio_rb32(pb);
size = avio_rb64(pb);
if (url_feof(pb))
break;
switch (tag) {
case MKBETAG('d','a','t','a'):
avio_skip(pb, 4); /* edit count */
caf->data_start = avio_tell(pb);
caf->data_size = size < 0 ? -1 : size - 4;
if (caf->data_size > 0 && pb->seekable)
avio_skip(pb, caf->data_size);
found_data = 1;
break;
/* magic cookie chunk */
case MKBETAG('k','u','k','i'):
if (read_kuki_chunk(s, size))
return AVERROR_INVALIDDATA;
break;
/* packet table chunk */
case MKBETAG('p','a','k','t'):
if (read_pakt_chunk(s, size))
return AVERROR_INVALIDDATA;
break;
case MKBETAG('i','n','f','o'):
read_info_chunk(s, size);
break;
case MKBETAG('c','h','a','n'):
if (size < 12)
return AVERROR_INVALIDDATA;
ff_mov_read_chan(s, size, st->codec);
break;
default:
#define _(x) ((x) >= ' ' ? (x) : ' ')
av_log(s, AV_LOG_WARNING, "skipping CAF chunk: %08X (%c%c%c%c), size %"PRId64"\n",
tag, _(tag>>24), _((tag>>16)&0xFF), _((tag>>8)&0xFF), _(tag&0xFF), size);
#undef _
case MKBETAG('f','r','e','e'):
if (size < 0)
return AVERROR_INVALIDDATA;
avio_skip(pb, size);
break;
}
}
if (!found_data)
return AVERROR_INVALIDDATA;
if (caf->bytes_per_packet > 0 && caf->frames_per_packet > 0) {
if (caf->data_size > 0)
st->nb_frames = (caf->data_size / caf->bytes_per_packet) * caf->frames_per_packet;
} else if (st->nb_index_entries) {
st->codec->bit_rate = st->codec->sample_rate * caf->data_size * 8 /
st->duration;
} else {
av_log(s, AV_LOG_ERROR, "Missing packet table. It is required when "
"block size or frame size are variable.\n");
return AVERROR_INVALIDDATA;
}
s->file_size = avio_size(pb);
s->file_size = FFMAX(0, s->file_size);
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
st->start_time = 0;
/* position the stream at the start of data */
if (caf->data_size >= 0)
avio_seek(pb, caf->data_start, SEEK_SET);
return 0;
}
/* mmf input */
static int mmf_read_header(AVFormatContext *s)
{
MMFContext *mmf = s->priv_data;
unsigned int tag;
AVIOContext *pb = s->pb;
AVStream *st;
int64_t size;
int rate, params;
tag = avio_rl32(pb);
if (tag != MKTAG('M', 'M', 'M', 'D'))
return -1;
avio_skip(pb, 4); /* file_size */
/* Skip some unused chunks that may or may not be present */
for (;; avio_skip(pb, size)) {
tag = avio_rl32(pb);
size = avio_rb32(pb);
if (tag == MKTAG('C', 'N', 'T', 'I'))
continue;
if (tag == MKTAG('O', 'P', 'D', 'A'))
continue;
break;
}
/* Tag = "ATRx", where "x" = track number */
if ((tag & 0xffffff) == MKTAG('M', 'T', 'R', 0)) {
av_log(s, AV_LOG_ERROR, "MIDI like format found, unsupported\n");
return -1;
}
if ((tag & 0xffffff) != MKTAG('A', 'T', 'R', 0)) {
av_log(s, AV_LOG_ERROR, "Unsupported SMAF chunk %08x\n", tag);
return -1;
}
avio_r8(pb); /* format type */
avio_r8(pb); /* sequence type */
params = avio_r8(pb); /* (channel << 7) | (format << 4) | rate */
rate = mmf_rate(params & 0x0f);
if (rate < 0) {
av_log(s, AV_LOG_ERROR, "Invalid sample rate\n");
return -1;
}
avio_r8(pb); /* wave base bit */
avio_r8(pb); /* time base d */
avio_r8(pb); /* time base g */
/* Skip some unused chunks that may or may not be present */
for (;; avio_skip(pb, size)) {
tag = avio_rl32(pb);
size = avio_rb32(pb);
if (tag == MKTAG('A', 't', 's', 'q'))
continue;
if (tag == MKTAG('A', 's', 'p', 'I'))
continue;
break;
}
/* Make sure it's followed by an Awa chunk, aka wave data */
if ((tag & 0xffffff) != MKTAG('A', 'w', 'a', 0)) {
av_log(s, AV_LOG_ERROR, "Unexpected SMAF chunk %08x\n", tag);
return -1;
}
mmf->data_size = size;
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_ADPCM_YAMAHA;
st->codec->sample_rate = rate;
st->codec->channels = 1;
st->codec->channel_layout = AV_CH_LAYOUT_MONO;
st->codec->bits_per_coded_sample = 4;
st->codec->bit_rate = st->codec->sample_rate *
st->codec->bits_per_coded_sample;
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
return 0;
}
static int rm_read_audio_stream_info(AVFormatContext *s, AVIOContext *pb,
AVStream *st, RMStream *ast, int read_all)
{
char buf[256];
uint32_t version;
int ret;
/* ra type header */
version = avio_rb16(pb); /* version */
if (version == 3) {
int header_size = avio_rb16(pb);
int64_t startpos = avio_tell(pb);
avio_skip(pb, 14);
rm_read_metadata(s, pb, 0);
if ((startpos + header_size) >= avio_tell(pb) + 2) {
// fourcc (should always be "lpcJ")
avio_r8(pb);
get_str8(pb, buf, sizeof(buf));
}
// Skip extra header crap (this should never happen)
if ((startpos + header_size) > avio_tell(pb))
avio_skip(pb, header_size + startpos - avio_tell(pb));
st->codec->sample_rate = 8000;
st->codec->channels = 1;
st->codec->channel_layout = AV_CH_LAYOUT_MONO;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = AV_CODEC_ID_RA_144;
ast->deint_id = DEINT_ID_INT0;
} else {
int flavor, sub_packet_h, coded_framesize, sub_packet_size;
int codecdata_length;
/* old version (4) */
avio_skip(pb, 2); /* unused */
avio_rb32(pb); /* .ra4 */
avio_rb32(pb); /* data size */
avio_rb16(pb); /* version2 */
avio_rb32(pb); /* header size */
flavor= avio_rb16(pb); /* add codec info / flavor */
ast->coded_framesize = coded_framesize = avio_rb32(pb); /* coded frame size */
avio_rb32(pb); /* ??? */
avio_rb32(pb); /* ??? */
avio_rb32(pb); /* ??? */
ast->sub_packet_h = sub_packet_h = avio_rb16(pb); /* 1 */
st->codec->block_align= avio_rb16(pb); /* frame size */
ast->sub_packet_size = sub_packet_size = avio_rb16(pb); /* sub packet size */
avio_rb16(pb); /* ??? */
if (version == 5) {
avio_rb16(pb); avio_rb16(pb); avio_rb16(pb);
}
st->codec->sample_rate = avio_rb16(pb);
avio_rb32(pb);
st->codec->channels = avio_rb16(pb);
if (version == 5) {
ast->deint_id = avio_rl32(pb);
avio_read(pb, buf, 4);
buf[4] = 0;
} else {
get_str8(pb, buf, sizeof(buf)); /* desc */
ast->deint_id = AV_RL32(buf);
get_str8(pb, buf, sizeof(buf)); /* desc */
}
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_tag = AV_RL32(buf);
st->codec->codec_id = ff_codec_get_id(ff_rm_codec_tags,
st->codec->codec_tag);
switch (st->codec->codec_id) {
case AV_CODEC_ID_AC3:
st->need_parsing = AVSTREAM_PARSE_FULL;
break;
case AV_CODEC_ID_RA_288:
st->codec->extradata_size= 0;
ast->audio_framesize = st->codec->block_align;
st->codec->block_align = coded_framesize;
break;
case AV_CODEC_ID_COOK:
st->need_parsing = AVSTREAM_PARSE_HEADERS;
case AV_CODEC_ID_ATRAC3:
case AV_CODEC_ID_SIPR:
avio_rb16(pb); avio_r8(pb);
if (version == 5)
avio_r8(pb);
codecdata_length = avio_rb32(pb);
if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
return -1;
}
ast->audio_framesize = st->codec->block_align;
if (st->codec->codec_id == AV_CODEC_ID_SIPR) {
if (flavor > 3) {
av_log(s, AV_LOG_ERROR, "bad SIPR file flavor %d\n",
flavor);
return -1;
}
st->codec->block_align = ff_sipr_subpk_size[flavor];
} else {
if(sub_packet_size <= 0){
av_log(s, AV_LOG_ERROR, "sub_packet_size is invalid\n");
return -1;
}
st->codec->block_align = ast->sub_packet_size;
}
if ((ret = rm_read_extradata(pb, st->codec, codecdata_length)) < 0)
return ret;
break;
case AV_CODEC_ID_AAC:
avio_rb16(pb); avio_r8(pb);
if (version == 5)
avio_r8(pb);
codecdata_length = avio_rb32(pb);
if(codecdata_length + FF_INPUT_BUFFER_PADDING_SIZE <= (unsigned)codecdata_length){
av_log(s, AV_LOG_ERROR, "codecdata_length too large\n");
return -1;
}
if (codecdata_length >= 1) {
avio_r8(pb);
if ((ret = rm_read_extradata(pb, st->codec, codecdata_length - 1)) < 0)
return ret;
}
break;
default:
av_strlcpy(st->codec->codec_name, buf, sizeof(st->codec->codec_name));
}
if (ast->deint_id == DEINT_ID_INT4 ||
ast->deint_id == DEINT_ID_GENR ||
ast->deint_id == DEINT_ID_SIPR) {
if (st->codec->block_align <= 0 ||
ast->audio_framesize * sub_packet_h > (unsigned)INT_MAX ||
ast->audio_framesize * sub_packet_h < st->codec->block_align)
return AVERROR_INVALIDDATA;
if (av_new_packet(&ast->pkt, ast->audio_framesize * sub_packet_h) < 0)
return AVERROR(ENOMEM);
}
switch (ast->deint_id) {
case DEINT_ID_INT4:
if (ast->coded_framesize > ast->audio_framesize ||
sub_packet_h <= 1 ||
ast->coded_framesize * sub_packet_h > (2 + (sub_packet_h & 1)) * ast->audio_framesize)
return AVERROR_INVALIDDATA;
break;
case DEINT_ID_GENR:
if (ast->sub_packet_size <= 0 ||
ast->sub_packet_size > ast->audio_framesize)
return AVERROR_INVALIDDATA;
break;
case DEINT_ID_SIPR:
case DEINT_ID_INT0:
case DEINT_ID_VBRS:
case DEINT_ID_VBRF:
break;
default:
av_log(NULL,0,"Unknown interleaver %X\n", ast->deint_id);
return AVERROR_INVALIDDATA;
}
if (read_all) {
avio_r8(pb);
avio_r8(pb);
avio_r8(pb);
rm_read_metadata(s, pb, 0);
}
}
return 0;
}
static int iff_read_header(AVFormatContext *s)
{
IffDemuxContext *iff = s->priv_data;
AVIOContext *pb = s->pb;
AVStream *st;
uint8_t *buf;
uint32_t chunk_id, data_size;
uint32_t screenmode = 0, num, den;
unsigned transparency = 0;
unsigned masking = 0; // no mask
uint8_t fmt[16];
int fmt_size;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
st->codec->channels = 1;
st->codec->channel_layout = AV_CH_LAYOUT_MONO;
avio_skip(pb, 8);
// codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
st->codec->codec_tag = avio_rl32(pb);
iff->bitmap_compression = -1;
iff->svx8_compression = -1;
iff->maud_bits = -1;
iff->maud_compression = -1;
while(!url_feof(pb)) {
uint64_t orig_pos;
int res;
const char *metadata_tag = NULL;
chunk_id = avio_rl32(pb);
data_size = avio_rb32(pb);
orig_pos = avio_tell(pb);
switch(chunk_id) {
case ID_VHDR:
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
if (data_size < 14)
return AVERROR_INVALIDDATA;
avio_skip(pb, 12);
st->codec->sample_rate = avio_rb16(pb);
if (data_size >= 16) {
avio_skip(pb, 1);
iff->svx8_compression = avio_r8(pb);
}
break;
case ID_MHDR:
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
if (data_size < 32)
return AVERROR_INVALIDDATA;
avio_skip(pb, 4);
iff->maud_bits = avio_rb16(pb);
avio_skip(pb, 2);
num = avio_rb32(pb);
den = avio_rb16(pb);
if (!den)
return AVERROR_INVALIDDATA;
avio_skip(pb, 2);
st->codec->sample_rate = num / den;
st->codec->channels = avio_rb16(pb);
iff->maud_compression = avio_rb16(pb);
if (st->codec->channels == 1)
st->codec->channel_layout = AV_CH_LAYOUT_MONO;
else if (st->codec->channels == 2)
st->codec->channel_layout = AV_CH_LAYOUT_STEREO;
break;
case ID_ABIT:
case ID_BODY:
case ID_DBOD:
case ID_MDAT:
iff->body_pos = avio_tell(pb);
iff->body_end = iff->body_pos + data_size;
iff->body_size = data_size;
break;
case ID_CHAN:
if (data_size < 4)
return AVERROR_INVALIDDATA;
if (avio_rb32(pb) < 6) {
st->codec->channels = 1;
st->codec->channel_layout = AV_CH_LAYOUT_MONO;
} else {
st->codec->channels = 2;
st->codec->channel_layout = AV_CH_LAYOUT_STEREO;
}
break;
case ID_CAMG:
if (data_size < 4)
return AVERROR_INVALIDDATA;
screenmode = avio_rb32(pb);
break;
case ID_CMAP:
if (data_size < 3 || data_size > 768 || data_size % 3) {
av_log(s, AV_LOG_ERROR, "Invalid CMAP chunk size %"PRIu32"\n",
data_size);
return AVERROR_INVALIDDATA;
}
st->codec->extradata_size = data_size + IFF_EXTRA_VIDEO_SIZE;
st->codec->extradata = av_malloc(data_size + IFF_EXTRA_VIDEO_SIZE + FF_INPUT_BUFFER_PADDING_SIZE);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
if (avio_read(pb, st->codec->extradata + IFF_EXTRA_VIDEO_SIZE, data_size) < 0)
return AVERROR(EIO);
break;
case ID_BMHD:
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
if (data_size <= 8)
return AVERROR_INVALIDDATA;
st->codec->width = avio_rb16(pb);
st->codec->height = avio_rb16(pb);
avio_skip(pb, 4); // x, y offset
st->codec->bits_per_coded_sample = avio_r8(pb);
if (data_size >= 10)
masking = avio_r8(pb);
if (data_size >= 11)
iff->bitmap_compression = avio_r8(pb);
if (data_size >= 14) {
avio_skip(pb, 1); // padding
transparency = avio_rb16(pb);
}
if (data_size >= 16) {
st->sample_aspect_ratio.num = avio_r8(pb);
st->sample_aspect_ratio.den = avio_r8(pb);
}
break;
case ID_DPEL:
if (data_size < 4 || (data_size & 3))
return AVERROR_INVALIDDATA;
if ((fmt_size = avio_read(pb, fmt, sizeof(fmt))) < 0)
return fmt_size;
if (fmt_size == sizeof(deep_rgb24) && !memcmp(fmt, deep_rgb24, sizeof(deep_rgb24)))
st->codec->pix_fmt = AV_PIX_FMT_RGB24;
else if (fmt_size == sizeof(deep_rgba) && !memcmp(fmt, deep_rgba, sizeof(deep_rgba)))
st->codec->pix_fmt = AV_PIX_FMT_RGBA;
else if (fmt_size == sizeof(deep_bgra) && !memcmp(fmt, deep_bgra, sizeof(deep_bgra)))
st->codec->pix_fmt = AV_PIX_FMT_BGRA;
else if (fmt_size == sizeof(deep_argb) && !memcmp(fmt, deep_argb, sizeof(deep_argb)))
st->codec->pix_fmt = AV_PIX_FMT_ARGB;
else if (fmt_size == sizeof(deep_abgr) && !memcmp(fmt, deep_abgr, sizeof(deep_abgr)))
st->codec->pix_fmt = AV_PIX_FMT_ABGR;
else {
avpriv_request_sample(s, "color format %.16s", fmt);
return AVERROR_PATCHWELCOME;
}
break;
case ID_DGBL:
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
if (data_size < 8)
return AVERROR_INVALIDDATA;
st->codec->width = avio_rb16(pb);
st->codec->height = avio_rb16(pb);
iff->bitmap_compression = avio_rb16(pb);
st->sample_aspect_ratio.num = avio_r8(pb);
st->sample_aspect_ratio.den = avio_r8(pb);
st->codec->bits_per_coded_sample = 24;
break;
case ID_DLOC:
if (data_size < 4)
return AVERROR_INVALIDDATA;
st->codec->width = avio_rb16(pb);
st->codec->height = avio_rb16(pb);
break;
case ID_TVDC:
if (data_size < sizeof(iff->tvdc))
return AVERROR_INVALIDDATA;
res = avio_read(pb, iff->tvdc, sizeof(iff->tvdc));
if (res < 0)
return res;
break;
case ID_ANNO:
case ID_TEXT: metadata_tag = "comment"; break;
case ID_AUTH: metadata_tag = "artist"; break;
case ID_COPYRIGHT: metadata_tag = "copyright"; break;
case ID_NAME: metadata_tag = "title"; break;
}
if (metadata_tag) {
if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!\n", metadata_tag);
return res;
}
}
avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
}
avio_seek(pb, iff->body_pos, SEEK_SET);
switch(st->codec->codec_type) {
case AVMEDIA_TYPE_AUDIO:
avpriv_set_pts_info(st, 32, 1, st->codec->sample_rate);
if (st->codec->codec_tag == ID_16SV)
st->codec->codec_id = AV_CODEC_ID_PCM_S16BE_PLANAR;
else if (st->codec->codec_tag == ID_MAUD) {
if (iff->maud_bits == 8 && !iff->maud_compression) {
st->codec->codec_id = AV_CODEC_ID_PCM_U8;
} else if (iff->maud_bits == 16 && !iff->maud_compression) {
st->codec->codec_id = AV_CODEC_ID_PCM_S16BE;
} else if (iff->maud_bits == 8 && iff->maud_compression == 2) {
st->codec->codec_id = AV_CODEC_ID_PCM_ALAW;
} else if (iff->maud_bits == 8 && iff->maud_compression == 3) {
st->codec->codec_id = AV_CODEC_ID_PCM_MULAW;
} else {
avpriv_request_sample(s, "compression %d and bit depth %d", iff->maud_compression, iff->maud_bits);
return AVERROR_PATCHWELCOME;
}
} else {
switch (iff->svx8_compression) {
case COMP_NONE:
st->codec->codec_id = AV_CODEC_ID_PCM_S8_PLANAR;
break;
case COMP_FIB:
st->codec->codec_id = AV_CODEC_ID_8SVX_FIB;
break;
case COMP_EXP:
st->codec->codec_id = AV_CODEC_ID_8SVX_EXP;
break;
default:
av_log(s, AV_LOG_ERROR,
"Unknown SVX8 compression method '%d'\n", iff->svx8_compression);
return -1;
}
}
st->codec->bits_per_coded_sample = av_get_bits_per_sample(st->codec->codec_id);
st->codec->bit_rate = st->codec->channels * st->codec->sample_rate * st->codec->bits_per_coded_sample;
st->codec->block_align = st->codec->channels * st->codec->bits_per_coded_sample;
break;
case AVMEDIA_TYPE_VIDEO:
iff->bpp = st->codec->bits_per_coded_sample;
if ((screenmode & 0x800 /* Hold And Modify */) && iff->bpp <= 8) {
iff->ham = iff->bpp > 6 ? 6 : 4;
st->codec->bits_per_coded_sample = 24;
}
iff->flags = (screenmode & 0x80 /* Extra HalfBrite */) && iff->bpp <= 8;
iff->masking = masking;
iff->transparency = transparency;
if (!st->codec->extradata) {
st->codec->extradata_size = IFF_EXTRA_VIDEO_SIZE;
st->codec->extradata = av_malloc(IFF_EXTRA_VIDEO_SIZE + FF_INPUT_BUFFER_PADDING_SIZE);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
}
av_assert0(st->codec->extradata_size >= IFF_EXTRA_VIDEO_SIZE);
buf = st->codec->extradata;
bytestream_put_be16(&buf, IFF_EXTRA_VIDEO_SIZE);
bytestream_put_byte(&buf, iff->bitmap_compression);
bytestream_put_byte(&buf, iff->bpp);
bytestream_put_byte(&buf, iff->ham);
bytestream_put_byte(&buf, iff->flags);
bytestream_put_be16(&buf, iff->transparency);
bytestream_put_byte(&buf, iff->masking);
bytestream_put_buffer(&buf, iff->tvdc, sizeof(iff->tvdc));
st->codec->codec_id = AV_CODEC_ID_IFF_ILBM;
break;
default:
return -1;
}
return 0;
}
static int sync(AVFormatContext *s, int64_t *timestamp, int *flags, int *stream_index, int64_t *pos){
RMDemuxContext *rm = s->priv_data;
AVIOContext *pb = s->pb;
AVStream *st;
uint32_t state=0xFFFFFFFF;
while(!pb->eof_reached){
int len, num, i;
*pos= avio_tell(pb) - 3;
if(rm->remaining_len > 0){
num= rm->current_stream;
len= rm->remaining_len;
*timestamp = AV_NOPTS_VALUE;
*flags= 0;
}else{
state= (state<<8) + avio_r8(pb);
if(state == MKBETAG('I', 'N', 'D', 'X')){
int n_pkts, expected_len;
len = avio_rb32(pb);
avio_skip(pb, 2);
n_pkts = avio_rb32(pb);
expected_len = 20 + n_pkts * 14;
if (len == 20)
/* some files don't add index entries to chunk size... */
len = expected_len;
else if (len != expected_len)
av_log(s, AV_LOG_WARNING,
"Index size %d (%d pkts) is wrong, should be %d.\n",
len, n_pkts, expected_len);
len -= 14; // we already read part of the index header
if(len<0)
continue;
goto skip;
} else if (state == MKBETAG('D','A','T','A')) {
av_log(s, AV_LOG_WARNING,
"DATA tag in middle of chunk, file may be broken.\n");
}
if(state > (unsigned)0xFFFF || state <= 12)
continue;
len=state - 12;
state= 0xFFFFFFFF;
num = avio_rb16(pb);
*timestamp = avio_rb32(pb);
avio_r8(pb); /* reserved */
*flags = avio_r8(pb); /* flags */
}
for(i=0;i<s->nb_streams;i++) {
st = s->streams[i];
if (num == st->id)
break;
}
if (i == s->nb_streams) {
skip:
/* skip packet if unknown number */
avio_skip(pb, len);
rm->remaining_len = 0;
continue;
}
*stream_index= i;
return len;
}
return -1;
}
static int dxa_read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
DXAContext *c = s->priv_data;
AVStream *st, *ast;
uint32_t tag;
int32_t fps;
int w, h;
int num, den;
int flags;
int ret;
tag = avio_rl32(pb);
if (tag != MKTAG('D', 'E', 'X', 'A'))
return AVERROR_INVALIDDATA;
flags = avio_r8(pb);
c->frames = avio_rb16(pb);
if(!c->frames){
av_log(s, AV_LOG_ERROR, "File contains no frames ???\n");
return AVERROR_INVALIDDATA;
}
fps = avio_rb32(pb);
if(fps > 0){
den = 1000;
num = fps;
}else if (fps < 0){
den = 100000;
num = -fps;
}else{
den = 10;
num = 1;
}
w = avio_rb16(pb);
h = avio_rb16(pb);
c->has_sound = 0;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
// Parse WAV data header
if(avio_rl32(pb) == MKTAG('W', 'A', 'V', 'E')){
uint32_t size, fsize;
c->has_sound = 1;
size = avio_rb32(pb);
c->vidpos = avio_tell(pb) + size;
avio_skip(pb, 16);
fsize = avio_rl32(pb);
ast = avformat_new_stream(s, NULL);
if (!ast)
return AVERROR(ENOMEM);
ret = ff_get_wav_header(s, pb, ast->codecpar, fsize, 0);
if (ret < 0)
return ret;
if (ast->codecpar->sample_rate > 0)
avpriv_set_pts_info(ast, 64, 1, ast->codecpar->sample_rate);
// find 'data' chunk
while(avio_tell(pb) < c->vidpos && !avio_feof(pb)){
tag = avio_rl32(pb);
fsize = avio_rl32(pb);
if(tag == MKTAG('d', 'a', 't', 'a')) break;
avio_skip(pb, fsize);
}
c->bpc = (fsize + c->frames - 1) / c->frames;
if(ast->codecpar->block_align)
c->bpc = ((c->bpc + ast->codecpar->block_align - 1) / ast->codecpar->block_align) * ast->codecpar->block_align;
c->bytes_left = fsize;
c->wavpos = avio_tell(pb);
avio_seek(pb, c->vidpos, SEEK_SET);
}
/* now we are ready: build format streams */
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
st->codecpar->codec_id = AV_CODEC_ID_DXA;
st->codecpar->width = w;
st->codecpar->height = h;
av_reduce(&den, &num, den, num, (1UL<<31)-1);
avpriv_set_pts_info(st, 33, num, den);
/* flags & 0x80 means that image is interlaced,
* flags & 0x40 means that image has double height
* either way set true height
*/
if(flags & 0xC0){
st->codecpar->height >>= 1;
}
static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof)
{
AVIOContext *pb = s->pb;
char abss[24];
int hour, min, sec, i, ret, config;
int dsd_layout[6];
ID3v2ExtraMeta *id3v2_extra_meta;
while (avio_tell(pb) + 12 <= eof) {
uint32_t tag = avio_rl32(pb);
uint64_t size = avio_rb64(pb);
uint64_t orig_pos = avio_tell(pb);
switch(tag) {
case MKTAG('A','B','S','S'):
if (size < 8)
return AVERROR_INVALIDDATA;
hour = avio_rb16(pb);
min = avio_r8(pb);
sec = avio_r8(pb);
snprintf(abss, sizeof(abss), "%02dh:%02dm:%02ds:%d", hour, min, sec, avio_rb32(pb));
av_dict_set(&st->metadata, "absolute_start_time", abss, 0);
break;
case MKTAG('C','H','N','L'):
if (size < 2)
return AVERROR_INVALIDDATA;
st->codec->channels = avio_rb16(pb);
if (size < 2 + st->codec->channels * 4)
return AVERROR_INVALIDDATA;
st->codec->channel_layout = 0;
if (st->codec->channels > FF_ARRAY_ELEMS(dsd_layout)) {
avpriv_request_sample(s, "channel layout");
break;
}
for (i = 0; i < st->codec->channels; i++)
dsd_layout[i] = avio_rl32(pb);
for (i = 0; i < FF_ARRAY_ELEMS(dsd_channel_layout); i++) {
const DSDLayoutDesc * d = &dsd_channel_layout[i];
if (av_get_channel_layout_nb_channels(d->layout) == st->codec->channels &&
!memcmp(d->dsd_layout, dsd_layout, st->codec->channels * sizeof(uint32_t))) {
st->codec->channel_layout = d->layout;
break;
}
}
break;
case MKTAG('C','M','P','R'):
if (size < 4)
return AVERROR_INVALIDDATA;
tag = avio_rl32(pb);
st->codec->codec_id = ff_codec_get_id(dsd_codec_tags, tag);
if (!st->codec->codec_id) {
av_log(s, AV_LOG_ERROR, "'%c%c%c%c' compression is not supported\n",
tag&0xFF, (tag>>8)&0xFF, (tag>>16)&0xFF, (tag>>24)&0xFF);
return AVERROR_PATCHWELCOME;
}
break;
case MKTAG('F','S',' ',' '):
if (size < 4)
return AVERROR_INVALIDDATA;
st->codec->sample_rate = avio_rb32(pb) / 8;
break;
case MKTAG('I','D','3',' '):
id3v2_extra_meta = NULL;
ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta, size);
if (id3v2_extra_meta) {
if ((ret = ff_id3v2_parse_apic(s, &id3v2_extra_meta)) < 0) {
ff_id3v2_free_extra_meta(&id3v2_extra_meta);
return ret;
}
ff_id3v2_free_extra_meta(&id3v2_extra_meta);
}
if (size < avio_tell(pb) - orig_pos) {
av_log(s, AV_LOG_ERROR, "id3 exceeds chunk size\n");
return AVERROR_INVALIDDATA;
}
break;
case MKTAG('L','S','C','O'):
if (size < 2)
return AVERROR_INVALIDDATA;
config = avio_rb16(pb);
if (config != 0xFFFF) {
if (config < FF_ARRAY_ELEMS(dsd_loudspeaker_config))
st->codec->channel_layout = dsd_loudspeaker_config[config];
if (!st->codec->channel_layout)
avpriv_request_sample(s, "loudspeaker configuration %d", config);
}
break;
}
avio_skip(pb, size - (avio_tell(pb) - orig_pos) + (size & 1));
}
static int parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size)
{
const CodecMime *mime = ff_id3v2_mime_tags;
enum AVCodecID id = AV_CODEC_ID_NONE;
uint8_t mimetype[64], *desc = NULL, *data = NULL;
AVIOContext *pb = NULL;
AVStream *st;
int type, width, height;
int len, ret = 0;
pb = avio_alloc_context(buf, buf_size, 0, NULL, NULL, NULL, NULL);
if (!pb)
return AVERROR(ENOMEM);
/* read the picture type */
type = avio_rb32(pb);
if (type >= FF_ARRAY_ELEMS(ff_id3v2_picture_types) || type < 0) {
av_log(s, AV_LOG_ERROR, "Invalid picture type: %d.\n", type);
if (s->error_recognition & AV_EF_EXPLODE) {
ret = AVERROR_INVALIDDATA;
goto fail;
}
type = 0;
}
/* picture mimetype */
len = avio_rb32(pb);
if (len <= 0 ||
avio_read(pb, mimetype, FFMIN(len, sizeof(mimetype) - 1)) != len) {
av_log(s, AV_LOG_ERROR, "Could not read mimetype from an attached "
"picture.\n");
if (s->error_recognition & AV_EF_EXPLODE)
ret = AVERROR_INVALIDDATA;
goto fail;
}
mimetype[len] = 0;
while (mime->id != AV_CODEC_ID_NONE) {
if (!strncmp(mime->str, mimetype, sizeof(mimetype))) {
id = mime->id;
break;
}
mime++;
}
if (id == AV_CODEC_ID_NONE) {
av_log(s, AV_LOG_ERROR, "Unknown attached picture mimetype: %s.\n",
mimetype);
if (s->error_recognition & AV_EF_EXPLODE)
ret = AVERROR_INVALIDDATA;
goto fail;
}
/* picture description */
len = avio_rb32(pb);
if (len > 0) {
if (!(desc = av_malloc(len + 1))) {
ret = AVERROR(ENOMEM);
goto fail;
}
if (avio_read(pb, desc, len) != len) {
av_log(s, AV_LOG_ERROR, "Error reading attached picture description.\n");
if (s->error_recognition & AV_EF_EXPLODE)
ret = AVERROR(EIO);
goto fail;
}
desc[len] = 0;
}
/* picture metadata */
width = avio_rb32(pb);
height = avio_rb32(pb);
avio_skip(pb, 8);
/* picture data */
len = avio_rb32(pb);
if (len <= 0) {
av_log(s, AV_LOG_ERROR, "Invalid attached picture size: %d.\n", len);
if (s->error_recognition & AV_EF_EXPLODE)
ret = AVERROR_INVALIDDATA;
goto fail;
}
if (!(data = av_malloc(len))) {
ret = AVERROR(ENOMEM);
goto fail;
}
if (avio_read(pb, data, len) != len) {
av_log(s, AV_LOG_ERROR, "Error reading attached picture data.\n");
if (s->error_recognition & AV_EF_EXPLODE)
ret = AVERROR(EIO);
goto fail;
}
st = avformat_new_stream(s, NULL);
if (!st) {
ret = AVERROR(ENOMEM);
goto fail;
}
av_init_packet(&st->attached_pic);
st->attached_pic.data = data;
st->attached_pic.size = len;
st->attached_pic.destruct = av_destruct_packet;
st->attached_pic.stream_index = st->index;
st->attached_pic.flags |= AV_PKT_FLAG_KEY;
st->disposition |= AV_DISPOSITION_ATTACHED_PIC;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = id;
st->codec->width = width;
st->codec->height = height;
av_dict_set(&st->metadata, "comment", ff_id3v2_picture_types[type], 0);
if (desc)
av_dict_set(&st->metadata, "title", desc, AV_DICT_DONT_STRDUP_VAL);
av_freep(&pb);
return 0;
fail:
av_freep(&desc);
av_freep(&data);
av_freep(&pb);
return ret;
}
static int iff_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
IffDemuxContext *iff = s->priv_data;
AVIOContext *pb = s->pb;
AVStream *st;
uint32_t chunk_id, data_size;
int compression = -1;
st = av_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
st->codec->channels = 1;
avio_skip(pb, 8);
// codec_tag used by ByteRun1 decoder to distinguish progressive (PBM) and interlaced (ILBM) content
st->codec->codec_tag = avio_rl32(pb);
while(!pb->eof_reached) {
uint64_t orig_pos;
int res;
const char *metadata_tag = NULL;
chunk_id = avio_rl32(pb);
data_size = avio_rb32(pb);
orig_pos = avio_tell(pb);
switch(chunk_id) {
case ID_VHDR:
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
if (data_size < 14)
return AVERROR_INVALIDDATA;
avio_skip(pb, 12);
st->codec->sample_rate = avio_rb16(pb);
if (data_size >= 16) {
avio_skip(pb, 1);
compression = avio_r8(pb);
}
break;
case ID_BODY:
iff->body_pos = avio_tell(pb);
iff->body_size = data_size;
break;
case ID_CHAN:
if (data_size < 4)
return AVERROR_INVALIDDATA;
st->codec->channels = (avio_rb32(pb) < 6) ? 1 : 2;
break;
case ID_CMAP:
st->codec->extradata_size = data_size;
st->codec->extradata = av_malloc(data_size);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
if (avio_read(pb, st->codec->extradata, data_size) < 0)
return AVERROR(EIO);
break;
case ID_BMHD:
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
if (data_size <= 8)
return AVERROR_INVALIDDATA;
st->codec->width = avio_rb16(pb);
st->codec->height = avio_rb16(pb);
avio_skip(pb, 4); // x, y offset
st->codec->bits_per_coded_sample = avio_r8(pb);
if (data_size >= 11) {
avio_skip(pb, 1); // masking
compression = avio_r8(pb);
}
if (data_size >= 16) {
avio_skip(pb, 3); // paddding, transparent
st->sample_aspect_ratio.num = avio_r8(pb);
st->sample_aspect_ratio.den = avio_r8(pb);
}
break;
case ID_ANNO:
case ID_TEXT:
metadata_tag = "comment";
break;
case ID_AUTH:
metadata_tag = "artist";
break;
case ID_COPYRIGHT:
metadata_tag = "copyright";
break;
case ID_NAME:
metadata_tag = "title";
break;
}
if (metadata_tag) {
if ((res = get_metadata(s, metadata_tag, data_size)) < 0) {
av_log(s, AV_LOG_ERROR, "cannot allocate metadata tag %s!", metadata_tag);
return res;
}
}
avio_skip(pb, data_size - (avio_tell(pb) - orig_pos) + (data_size & 1));
}
avio_seek(pb, iff->body_pos, SEEK_SET);
switch(st->codec->codec_type) {
case AVMEDIA_TYPE_AUDIO:
av_set_pts_info(st, 32, 1, st->codec->sample_rate);
switch(compression) {
case COMP_NONE:
st->codec->codec_id = CODEC_ID_PCM_S8;
break;
case COMP_FIB:
st->codec->codec_id = CODEC_ID_8SVX_FIB;
break;
case COMP_EXP:
st->codec->codec_id = CODEC_ID_8SVX_EXP;
break;
default:
av_log(s, AV_LOG_ERROR, "unknown compression method\n");
return -1;
}
st->codec->bits_per_coded_sample = 8;
st->codec->bit_rate = st->codec->channels * st->codec->sample_rate * st->codec->bits_per_coded_sample;
st->codec->block_align = st->codec->channels * st->codec->bits_per_coded_sample;
break;
case AVMEDIA_TYPE_VIDEO:
switch (compression) {
case BITMAP_RAW:
st->codec->codec_id = CODEC_ID_IFF_ILBM;
break;
case BITMAP_BYTERUN1:
st->codec->codec_id = CODEC_ID_IFF_BYTERUN1;
break;
default:
av_log(s, AV_LOG_ERROR, "unknown compression method\n");
return AVERROR_INVALIDDATA;
}
break;
default:
return -1;
}
return 0;
}
/* aiff input */
static int aiff_read_header(AVFormatContext *s)
{
int size, filesize;
int64_t offset = 0;
uint32_t tag;
unsigned version = AIFF_C_VERSION1;
AVIOContext *pb = s->pb;
AVStream * st;
AIFFInputContext *aiff = s->priv_data;
/* check FORM header */
filesize = get_tag(pb, &tag);
if (filesize < 0 || tag != MKTAG('F', 'O', 'R', 'M'))
return AVERROR_INVALIDDATA;
/* AIFF data type */
tag = avio_rl32(pb);
if (tag == MKTAG('A', 'I', 'F', 'F')) /* Got an AIFF file */
version = AIFF;
else if (tag != MKTAG('A', 'I', 'F', 'C')) /* An AIFF-C file then */
return AVERROR_INVALIDDATA;
filesize -= 4;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
while (filesize > 0) {
/* parse different chunks */
size = get_tag(pb, &tag);
if (size < 0)
return size;
filesize -= size + 8;
switch (tag) {
case MKTAG('C', 'O', 'M', 'M'): /* Common chunk */
/* Then for the complete header info */
st->nb_frames = get_aiff_header(s, size, version);
if (st->nb_frames < 0)
return st->nb_frames;
if (offset > 0) // COMM is after SSND
goto got_sound;
break;
case MKTAG('F', 'V', 'E', 'R'): /* Version chunk */
version = avio_rb32(pb);
break;
case MKTAG('N', 'A', 'M', 'E'): /* Sample name chunk */
get_meta(s, "title" , size);
break;
case MKTAG('A', 'U', 'T', 'H'): /* Author chunk */
get_meta(s, "author" , size);
break;
case MKTAG('(', 'c', ')', ' '): /* Copyright chunk */
get_meta(s, "copyright", size);
break;
case MKTAG('A', 'N', 'N', 'O'): /* Annotation chunk */
get_meta(s, "comment" , size);
break;
case MKTAG('S', 'S', 'N', 'D'): /* Sampled sound chunk */
aiff->data_end = avio_tell(pb) + size;
offset = avio_rb32(pb); /* Offset of sound data */
avio_rb32(pb); /* BlockSize... don't care */
offset += avio_tell(pb); /* Compute absolute data offset */
if (st->codec->block_align) /* Assume COMM already parsed */
goto got_sound;
if (!pb->seekable) {
av_log(s, AV_LOG_ERROR, "file is not seekable\n");
return -1;
}
avio_skip(pb, size - 8);
break;
case MKTAG('w', 'a', 'v', 'e'):
if ((uint64_t)size > (1<<30))
return -1;
st->codec->extradata = av_mallocz(size + FF_INPUT_BUFFER_PADDING_SIZE);
if (!st->codec->extradata)
return AVERROR(ENOMEM);
st->codec->extradata_size = size;
avio_read(pb, st->codec->extradata, size);
break;
default: /* Jump */
if (size & 1) /* Always even aligned */
size++;
avio_skip(pb, size);
}
}
got_sound:
if (!st->codec->block_align) {
av_log(s, AV_LOG_ERROR, "could not find COMM tag or invalid block_align value\n");
return -1;
}
/* Now positioned, get the sound data start and end */
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
st->start_time = 0;
st->duration = st->nb_frames * aiff->block_duration;
/* Position the stream at the first block */
avio_seek(pb, offset, SEEK_SET);
return 0;
}
/* Returns the number of sound data frames or negative on error */
static unsigned int get_aiff_header(AVFormatContext *s, int size,
unsigned version)
{
AVIOContext *pb = s->pb;
AVCodecContext *codec = s->streams[0]->codec;
AIFFInputContext *aiff = s->priv_data;
int exp;
uint64_t val;
double sample_rate;
unsigned int num_frames;
if (size & 1)
size++;
codec->codec_type = AVMEDIA_TYPE_AUDIO;
codec->channels = avio_rb16(pb);
num_frames = avio_rb32(pb);
codec->bits_per_coded_sample = avio_rb16(pb);
exp = avio_rb16(pb);
val = avio_rb64(pb);
sample_rate = ldexp(val, exp - 16383 - 63);
codec->sample_rate = sample_rate;
size -= 18;
/* get codec id for AIFF-C */
if (size < 4) {
version = AIFF;
} else if (version == AIFF_C_VERSION1) {
codec->codec_tag = avio_rl32(pb);
codec->codec_id = ff_codec_get_id(ff_codec_aiff_tags, codec->codec_tag);
size -= 4;
}
if (version != AIFF_C_VERSION1 || codec->codec_id == AV_CODEC_ID_PCM_S16BE) {
codec->codec_id = aiff_codec_get_id(codec->bits_per_coded_sample);
codec->bits_per_coded_sample = av_get_bits_per_sample(codec->codec_id);
aiff->block_duration = 1;
} else {
switch (codec->codec_id) {
case AV_CODEC_ID_PCM_F32BE:
case AV_CODEC_ID_PCM_F64BE:
case AV_CODEC_ID_PCM_S16LE:
case AV_CODEC_ID_PCM_ALAW:
case AV_CODEC_ID_PCM_MULAW:
aiff->block_duration = 1;
break;
case AV_CODEC_ID_ADPCM_IMA_QT:
codec->block_align = 34*codec->channels;
break;
case AV_CODEC_ID_MACE3:
codec->block_align = 2*codec->channels;
break;
case AV_CODEC_ID_ADPCM_G726LE:
codec->bits_per_coded_sample = 5;
case AV_CODEC_ID_ADPCM_G722:
case AV_CODEC_ID_MACE6:
codec->block_align = 1*codec->channels;
break;
case AV_CODEC_ID_GSM:
codec->block_align = 33;
break;
default:
aiff->block_duration = 1;
break;
}
if (codec->block_align > 0)
aiff->block_duration = av_get_audio_frame_duration(codec,
codec->block_align);
}
/* Block align needs to be computed in all cases, as the definition
* is specific to applications -> here we use the WAVE format definition */
if (!codec->block_align)
codec->block_align = (av_get_bits_per_sample(codec->codec_id) * codec->channels) >> 3;
if (aiff->block_duration) {
codec->bit_rate = codec->sample_rate * (codec->block_align << 3) /
aiff->block_duration;
}
/* Chunk is over */
if (size)
avio_skip(pb, size);
return num_frames;
}
static int ea_read_packet(AVFormatContext *s,
AVPacket *pkt)
{
EaDemuxContext *ea = s->priv_data;
AVIOContext *pb = s->pb;
int ret = 0;
int packet_read = 0;
unsigned int chunk_type, chunk_size;
int key = 0;
int av_uninit(num_samples);
while (!packet_read) {
chunk_type = avio_rl32(pb);
chunk_size = (ea->big_endian ? avio_rb32(pb) : avio_rl32(pb)) - 8;
switch (chunk_type) {
/* audio data */
case ISNh_TAG:
/* header chunk also contains data; skip over the header portion*/
avio_skip(pb, 32);
chunk_size -= 32;
case ISNd_TAG:
case SCDl_TAG:
case SNDC_TAG:
case SDEN_TAG:
if (!ea->audio_codec) {
avio_skip(pb, chunk_size);
break;
} else if (ea->audio_codec == CODEC_ID_PCM_S16LE_PLANAR ||
ea->audio_codec == CODEC_ID_MP3) {
num_samples = avio_rl32(pb);
avio_skip(pb, 8);
chunk_size -= 12;
}
ret = av_get_packet(pb, pkt, chunk_size);
if (ret < 0)
return ret;
pkt->stream_index = ea->audio_stream_index;
pkt->pts = 90000;
pkt->pts *= ea->audio_frame_counter;
pkt->pts /= ea->sample_rate;
switch (ea->audio_codec) {
case CODEC_ID_ADPCM_EA:
/* 2 samples/byte, 1 or 2 samples per frame depending
* on stereo; chunk also has 12-byte header */
ea->audio_frame_counter += ((chunk_size - 12) * 2) /
ea->num_channels;
break;
case CODEC_ID_PCM_S16LE_PLANAR:
case CODEC_ID_MP3:
ea->audio_frame_counter += num_samples;
break;
default:
ea->audio_frame_counter += chunk_size /
(ea->bytes * ea->num_channels);
}
packet_read = 1;
break;
/* ending tag */
case 0:
case ISNe_TAG:
case SCEl_TAG:
case SEND_TAG:
case SEEN_TAG:
ret = AVERROR(EIO);
packet_read = 1;
break;
case MVIh_TAG:
case kVGT_TAG:
case pQGT_TAG:
case TGQs_TAG:
case MADk_TAG:
key = AV_PKT_FLAG_KEY;
case MVIf_TAG:
case fVGT_TAG:
case MADm_TAG:
case MADe_TAG:
avio_seek(pb, -8, SEEK_CUR); // include chunk preamble
chunk_size += 8;
goto get_video_packet;
case mTCD_TAG:
avio_skip(pb, 8); // skip ea dct header
chunk_size -= 8;
goto get_video_packet;
case MV0K_TAG:
case MPCh_TAG:
case pIQT_TAG:
key = AV_PKT_FLAG_KEY;
case MV0F_TAG:
get_video_packet:
ret = av_get_packet(pb, pkt, chunk_size);
if (ret < 0)
return ret;
pkt->stream_index = ea->video_stream_index;
pkt->flags |= key;
packet_read = 1;
break;
default:
avio_skip(pb, chunk_size);
break;
}
}
return ret;
}
static int read_part_of_packet(AVFormatContext *s, int64_t *pts,
int *len, int *strid, int read_packet) {
AVIOContext *pb = s->pb;
PVAContext *pvactx = s->priv_data;
int syncword, streamid, reserved, flags, length, pts_flag;
int64_t pva_pts = AV_NOPTS_VALUE, startpos;
recover:
startpos = avio_tell(pb);
syncword = avio_rb16(pb);
streamid = avio_r8(pb);
avio_r8(pb); /* counter not used */
reserved = avio_r8(pb);
flags = avio_r8(pb);
length = avio_rb16(pb);
pts_flag = flags & 0x10;
if (syncword != PVA_MAGIC) {
pva_log(s, AV_LOG_ERROR, "invalid syncword\n");
return AVERROR(EIO);
}
if (streamid != PVA_VIDEO_PAYLOAD && streamid != PVA_AUDIO_PAYLOAD) {
pva_log(s, AV_LOG_ERROR, "invalid streamid\n");
return AVERROR(EIO);
}
if (reserved != 0x55) {
pva_log(s, AV_LOG_WARNING, "expected reserved byte to be 0x55\n");
}
if (length > PVA_MAX_PAYLOAD_LENGTH) {
pva_log(s, AV_LOG_ERROR, "invalid payload length %u\n", length);
return AVERROR(EIO);
}
if (streamid == PVA_VIDEO_PAYLOAD && pts_flag) {
pva_pts = avio_rb32(pb);
length -= 4;
} else if (streamid == PVA_AUDIO_PAYLOAD) {
/* PVA Audio Packets either start with a signaled PES packet or
* are a continuation of the previous PES packet. New PES packets
* always start at the beginning of a PVA Packet, never somewhere in
* the middle. */
if (!pvactx->continue_pes) {
int pes_signal, pes_header_data_length, pes_packet_length,
pes_flags;
unsigned char pes_header_data[256];
pes_signal = avio_rb24(pb);
avio_r8(pb);
pes_packet_length = avio_rb16(pb);
pes_flags = avio_rb16(pb);
pes_header_data_length = avio_r8(pb);
if (pes_signal != 1) {
pva_log(s, AV_LOG_WARNING, "expected signaled PES packet, "
"trying to recover\n");
avio_skip(pb, length - 9);
if (!read_packet)
return AVERROR(EIO);
goto recover;
}
avio_read(pb, pes_header_data, pes_header_data_length);
length -= 9 + pes_header_data_length;
pes_packet_length -= 3 + pes_header_data_length;
pvactx->continue_pes = pes_packet_length;
if (pes_flags & 0x80 && (pes_header_data[0] & 0xf0) == 0x20)
pva_pts = ff_parse_pes_pts(pes_header_data);
}
pvactx->continue_pes -= length;
if (pvactx->continue_pes < 0) {
pva_log(s, AV_LOG_WARNING, "audio data corruption\n");
pvactx->continue_pes = 0;
}
}
if (pva_pts != AV_NOPTS_VALUE)
av_add_index_entry(s->streams[streamid-1], startpos, pva_pts, 0, 0, AVINDEX_KEYFRAME);
*pts = pva_pts;
*len = length;
*strid = streamid;
return 0;
}
static int fsb_read_header(AVFormatContext *s)
{
AVIOContext *pb = s->pb;
unsigned format, version, c;
int64_t offset;
AVCodecContext *codec;
AVStream *st = avformat_new_stream(s, NULL);
avio_skip(pb, 3); // "FSB"
version = avio_r8(pb) - '0';
if (version != 4 && version != 3) {
avpriv_request_sample(s, "version %d", version);
return AVERROR_PATCHWELCOME;
}
avio_skip(pb, 4);
if (!st)
return AVERROR(ENOMEM);
codec = st->codec;
codec->codec_type = AVMEDIA_TYPE_AUDIO;
codec->codec_tag = 0;
if (version == 3) {
offset = avio_rl32(pb) + 0x18;
avio_skip(pb, 44);
st->duration = avio_rl32(pb);
avio_skip(pb, 12);
format = avio_rl32(pb);
codec->sample_rate = avio_rl32(pb);
if (codec->sample_rate <= 0)
return AVERROR_INVALIDDATA;
avio_skip(pb, 6);
codec->channels = avio_rl16(pb);
if (!codec->channels)
return AVERROR_INVALIDDATA;
if (format & 0x00000100) {
codec->codec_id = AV_CODEC_ID_PCM_S16LE;
codec->block_align = 4096 * codec->channels;
} else if (format & 0x00400000) {
codec->bits_per_coded_sample = 4;
codec->codec_id = AV_CODEC_ID_ADPCM_IMA_WAV;
codec->block_align = 36 * codec->channels;
} else if (format & 0x00800000) {
codec->codec_id = AV_CODEC_ID_ADPCM_PSX;
codec->block_align = 16 * codec->channels;
} else if (format & 0x02000000) {
codec->codec_id = AV_CODEC_ID_ADPCM_THP;
codec->block_align = 8 * codec->channels;
if (codec->channels > INT_MAX / 32)
return AVERROR_INVALIDDATA;
ff_alloc_extradata(codec, 32 * codec->channels);
if (!codec->extradata)
return AVERROR(ENOMEM);
avio_seek(pb, 0x68, SEEK_SET);
for (c = 0; c < codec->channels; c++) {
avio_read(pb, codec->extradata + 32 * c, 32);
avio_skip(pb, 14);
}
} else {
avpriv_request_sample(s, "format 0x%X", format);
return AVERROR_PATCHWELCOME;
}
} else if (version == 4) {
offset = avio_rl32(pb) + 0x30;
avio_skip(pb, 80);
st->duration = avio_rl32(pb);
format = avio_rb32(pb);
switch(format) {
case 0x40001001:
case 0x00001005:
case 0x40001081:
case 0x40200001:
codec->codec_id = AV_CODEC_ID_XMA2;
break;
case 0x40000802:
codec->codec_id = AV_CODEC_ID_ADPCM_THP;
break;
default:
avpriv_request_sample(s, "format 0x%X", format);
return AVERROR_PATCHWELCOME;
}
codec->sample_rate = avio_rl32(pb);
if (codec->sample_rate <= 0)
return AVERROR_INVALIDDATA;
avio_skip(pb, 6);
codec->channels = avio_rl16(pb);
if (!codec->channels)
return AVERROR_INVALIDDATA;
switch (codec->codec_id) {
case AV_CODEC_ID_XMA2:
ff_alloc_extradata(codec, 34);
if (!codec->extradata)
return AVERROR(ENOMEM);
memset(codec->extradata, 0, 34);
codec->block_align = 2048;
break;
case AV_CODEC_ID_ADPCM_THP:
if (codec->channels > INT_MAX / 32)
return AVERROR_INVALIDDATA;
ff_alloc_extradata(codec, 32 * codec->channels);
if (!codec->extradata)
return AVERROR(ENOMEM);
avio_seek(pb, 0x80, SEEK_SET);
for (c = 0; c < codec->channels; c++) {
avio_read(pb, codec->extradata + 32 * c, 32);
avio_skip(pb, 14);
}
codec->block_align = 8 * codec->channels;
break;
}
} else {
av_assert0(0);
}
avio_skip(pb, offset - avio_tell(pb));
s->internal->data_offset = avio_tell(pb);
avpriv_set_pts_info(st, 64, 1, codec->sample_rate);
return 0;
}
static int ffm2_read_header(AVFormatContext *s)
{
FFMContext *ffm = s->priv_data;
AVStream *st;
AVIOContext *pb = s->pb;
AVCodecContext *codec;
ffm->packet_size = avio_rb32(pb);
if (ffm->packet_size != FFM_PACKET_SIZE)
goto fail;
ffm->write_index = avio_rb64(pb);
/* get also filesize */
if (pb->seekable) {
ffm->file_size = avio_size(pb);
if (ffm->write_index && 0)
adjust_write_index(s);
} else {
ffm->file_size = (UINT64_C(1) << 63) - 1;
}
while(!url_feof(pb)) {
unsigned id = avio_rb32(pb);
unsigned size = avio_rb32(pb);
int64_t next = avio_tell(pb) + size;
char rc_eq_buf[128];
if(!id)
break;
switch(id) {
case MKBETAG('M', 'A', 'I', 'N'):
avio_rb32(pb); /* nb_streams */
avio_rb32(pb); /* total bitrate */
break;
case MKBETAG('C', 'O', 'M', 'M'):
st = avformat_new_stream(s, NULL);
if (!st)
goto fail;
avpriv_set_pts_info(st, 64, 1, 1000000);
codec = st->codec;
/* generic info */
codec->codec_id = avio_rb32(pb);
codec->codec_type = avio_r8(pb);
codec->bit_rate = avio_rb32(pb);
codec->flags = avio_rb32(pb);
codec->flags2 = avio_rb32(pb);
codec->debug = avio_rb32(pb);
if (codec->flags & CODEC_FLAG_GLOBAL_HEADER) {
if (ff_get_extradata(codec, pb, avio_rb32(pb)) < 0)
return AVERROR(ENOMEM);
}
avio_seek(pb, next, SEEK_SET);
id = avio_rb32(pb);
size = avio_rb32(pb);
next = avio_tell(pb) + size;
switch(id) {
case MKBETAG('S', 'T', 'V', 'I'):
codec->time_base.num = avio_rb32(pb);
codec->time_base.den = avio_rb32(pb);
codec->width = avio_rb16(pb);
codec->height = avio_rb16(pb);
codec->gop_size = avio_rb16(pb);
codec->pix_fmt = avio_rb32(pb);
codec->qmin = avio_r8(pb);
codec->qmax = avio_r8(pb);
codec->max_qdiff = avio_r8(pb);
codec->qcompress = avio_rb16(pb) / 10000.0;
codec->qblur = avio_rb16(pb) / 10000.0;
codec->bit_rate_tolerance = avio_rb32(pb);
avio_get_str(pb, INT_MAX, rc_eq_buf, sizeof(rc_eq_buf));
codec->rc_eq = av_strdup(rc_eq_buf);
codec->rc_max_rate = avio_rb32(pb);
codec->rc_min_rate = avio_rb32(pb);
codec->rc_buffer_size = avio_rb32(pb);
codec->i_quant_factor = av_int2double(avio_rb64(pb));
codec->b_quant_factor = av_int2double(avio_rb64(pb));
codec->i_quant_offset = av_int2double(avio_rb64(pb));
codec->b_quant_offset = av_int2double(avio_rb64(pb));
codec->dct_algo = avio_rb32(pb);
codec->strict_std_compliance = avio_rb32(pb);
codec->max_b_frames = avio_rb32(pb);
codec->mpeg_quant = avio_rb32(pb);
codec->intra_dc_precision = avio_rb32(pb);
codec->me_method = avio_rb32(pb);
codec->mb_decision = avio_rb32(pb);
codec->nsse_weight = avio_rb32(pb);
codec->frame_skip_cmp = avio_rb32(pb);
codec->rc_buffer_aggressivity = av_int2double(avio_rb64(pb));
codec->codec_tag = avio_rb32(pb);
codec->thread_count = avio_r8(pb);
codec->coder_type = avio_rb32(pb);
codec->me_cmp = avio_rb32(pb);
codec->me_subpel_quality = avio_rb32(pb);
codec->me_range = avio_rb32(pb);
codec->keyint_min = avio_rb32(pb);
codec->scenechange_threshold = avio_rb32(pb);
codec->b_frame_strategy = avio_rb32(pb);
codec->qcompress = av_int2double(avio_rb64(pb));
codec->qblur = av_int2double(avio_rb64(pb));
codec->max_qdiff = avio_rb32(pb);
codec->refs = avio_rb32(pb);
break;
case MKBETAG('S', 'T', 'A', 'U'):
codec->sample_rate = avio_rb32(pb);
codec->channels = avio_rl16(pb);
codec->frame_size = avio_rl16(pb);
break;
}
break;
}
avio_seek(pb, next, SEEK_SET);
}
/* get until end of block reached */
while ((avio_tell(pb) % ffm->packet_size) != 0)
avio_r8(pb);
/* init packet demux */
ffm->packet_ptr = ffm->packet;
ffm->packet_end = ffm->packet;
ffm->frame_offset = 0;
ffm->dts = 0;
ffm->read_state = READ_HEADER;
ffm->first_packet = 1;
return 0;
fail:
ffm_close(s);
return -1;
}
static int smush_read_header(AVFormatContext *ctx)
{
SMUSHContext *smush = ctx->priv_data;
AVIOContext *pb = ctx->pb;
AVStream *vst, *ast;
uint32_t magic, nframes, size, subversion, i;
uint32_t width = 0, height = 0, got_audio = 0, read = 0;
uint32_t sample_rate, channels, palette[256];
magic = avio_rb32(pb);
avio_skip(pb, 4); // skip movie size
if (magic == MKBETAG('A', 'N', 'I', 'M')) {
if (avio_rb32(pb) != MKBETAG('A', 'H', 'D', 'R'))
return AVERROR_INVALIDDATA;
size = avio_rb32(pb);
if (size < 3 * 256 + 6)
return AVERROR_INVALIDDATA;
smush->version = 0;
subversion = avio_rl16(pb);
nframes = avio_rl16(pb);
avio_skip(pb, 2); // skip pad
for (i = 0; i < 256; i++)
palette[i] = avio_rb24(pb);
avio_skip(pb, size - (3 * 256 + 6));
} else if (magic == MKBETAG('S', 'A', 'N', 'M') ) {
if (avio_rb32(pb) != MKBETAG('S', 'H', 'D', 'R'))
return AVERROR_INVALIDDATA;
size = avio_rb32(pb);
if (size < 14)
return AVERROR_INVALIDDATA;
smush->version = 1;
subversion = avio_rl16(pb);
nframes = avio_rl32(pb);
avio_skip(pb, 2); // skip pad
width = avio_rl16(pb);
height = avio_rl16(pb);
avio_skip(pb, 2); // skip pad
avio_skip(pb, size - 14);
if (avio_rb32(pb) != MKBETAG('F', 'L', 'H', 'D'))
return AVERROR_INVALIDDATA;
size = avio_rb32(pb);
while (!got_audio && ((read + 8) < size)) {
uint32_t sig, chunk_size;
if (url_feof(pb))
return AVERROR_EOF;
sig = avio_rb32(pb);
chunk_size = avio_rb32(pb);
read += 8;
switch (sig) {
case MKBETAG('W', 'a', 'v', 'e'):
got_audio = 1;
sample_rate = avio_rl32(pb);
channels = avio_rl32(pb);
avio_skip(pb, chunk_size - 8);
read += chunk_size;
break;
case MKBETAG('B', 'l', '1', '6'):
case MKBETAG('A', 'N', 'N', 'O'):
avio_skip(pb, chunk_size);
read += chunk_size;
break;
default:
return AVERROR_INVALIDDATA;
break;
}
}
avio_skip(pb, size - read);
} else {
av_log(ctx, AV_LOG_ERROR, "Wrong magic\n");
return AVERROR_INVALIDDATA;
}
vst = avformat_new_stream(ctx, 0);
if (!vst)
return AVERROR(ENOMEM);
smush->video_stream_index = vst->index;
vst->start_time = 0;
vst->duration =
vst->nb_frames = nframes;
vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
vst->codec->codec_id = AV_CODEC_ID_SANM;
vst->codec->codec_tag = 0;
vst->codec->width = width;
vst->codec->height = height;
avpriv_set_pts_info(vst, 64, 66667, 1000000);
if (!smush->version) {
if (ff_alloc_extradata(vst->codec, 1024 + 2))
return AVERROR(ENOMEM);
AV_WL16(vst->codec->extradata, subversion);
for (i = 0; i < 256; i++)
AV_WL32(vst->codec->extradata + 2 + i * 4, palette[i]);
}
if (got_audio) {
ast = avformat_new_stream(ctx, 0);
if (!ast)
return AVERROR(ENOMEM);
smush->audio_stream_index = ast->index;
ast->start_time = 0;
ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
ast->codec->codec_id = AV_CODEC_ID_VIMA;
ast->codec->codec_tag = 0;
ast->codec->sample_rate = sample_rate;
ast->codec->channels = channels;
avpriv_set_pts_info(ast, 64, 1, ast->codec->sample_rate);
}
return 0;
}
