{ CODEC_ID_TTA, MKTAG('T', 'T', 'A', '1')},
{ CODEC_ID_TWINVQ, MKTAG('T', 'W', 'I', '2')},
#if LIBAVUTIL_VERSION_MICRO >= 100
{ CODEC_ID_VIMA, MKTAG('V', 'I', 'M', 'A')},
#endif
{ CODEC_ID_VMDAUDIO, MKTAG('V', 'M', 'D', 'A')},
{ CODEC_ID_WAVPACK, MKTAG('W', 'V', 'P', 'K')},
{ CODEC_ID_WESTWOOD_SND1, MKTAG('S', 'N', 'D', '1')},
{ CODEC_ID_XAN_DPCM, MKTAG('A', 'x', 'a', 'n')},
{ 0, 0 },
};
static const struct AVCodecTag mp_codecid_override_tags[] = {
{ CODEC_ID_8SVX_EXP, MKTAG('8', 'e', 'x', 'p')},
{ CODEC_ID_8SVX_FIB, MKTAG('8', 'f', 'i', 'b')},
{ MKBETAG('8','S','V','X'), MKTAG('8', 'r', 'a', 'w')},
{ CODEC_ID_AAC, MKTAG('M', 'P', '4', 'A')},
{ CODEC_ID_AAC_LATM, MKTAG('M', 'P', '4', 'L')},
{ CODEC_ID_AC3, 0x2000},
{ CODEC_ID_ADPCM_IMA_EA_SEAD, MKTAG('S', 'E', 'A', 'D')},
{ CODEC_ID_ADPCM_IMA_AMV, MKTAG('A', 'M', 'V', 'A')},
{ CODEC_ID_DTS, 0x2001},
{ CODEC_ID_DVVIDEO, MKTAG('d', 'v', 's', 'd')},
{ CODEC_ID_EAC3, MKTAG('E', 'A', 'C', '3')},
{ CODEC_ID_ESCAPE124, MKTAG('E', '1', '2', '4')},
#if LIBAVUTIL_VERSION_MICRO >= 100
{ CODEC_ID_ESCAPE130, MKTAG('E', '1', '3', '0')},
#endif
{ CODEC_ID_FLV1, MKTAG('F', 'L', 'V', '1')},
{ CODEC_ID_G729, MKTAG('G', '7', '2', '9')},
{ CODEC_ID_H264, MKTAG('H', '2', '6', '4')},
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(!url_feof(pb)){
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 dxv_decode(AVCodecContext *avctx, void *data,
int *got_frame, AVPacket *avpkt)
{
DXVContext *ctx = avctx->priv_data;
ThreadFrame tframe;
GetByteContext *gbc = &ctx->gbc;
int (*decompress_tex)(AVCodecContext *avctx);
uint32_t tag;
int channels, size = 0, old_type = 0;
int ret;
bytestream2_init(gbc, avpkt->data, avpkt->size);
tag = bytestream2_get_le32(gbc);
switch (tag) {
case MKBETAG('D', 'X', 'T', '1'):
decompress_tex = dxv_decompress_dxt1;
ctx->tex_funct = ctx->texdsp.dxt1_block;
ctx->tex_rat = 8;
ctx->tex_step = 8;
av_log(avctx, AV_LOG_DEBUG, "DXTR1 compression and DXT1 texture ");
break;
case MKBETAG('D', 'X', 'T', '5'):
decompress_tex = dxv_decompress_dxt5;
ctx->tex_funct = ctx->texdsp.dxt5_block;
ctx->tex_rat = 4;
ctx->tex_step = 16;
av_log(avctx, AV_LOG_DEBUG, "DXTR5 compression and DXT5 texture ");
break;
case MKBETAG('Y', 'C', 'G', '6'):
case MKBETAG('Y', 'G', '1', '0'):
avpriv_report_missing_feature(avctx, "Tag 0x%08X", tag);
return AVERROR_PATCHWELCOME;
default:
/* Old version does not have a real header, just size and type. */
size = tag & 0x00FFFFFF;
old_type = tag >> 24;
channels = old_type & 0x0F;
if (old_type & 0x40) {
av_log(avctx, AV_LOG_DEBUG, "LZF compression and DXT5 texture ");
ctx->tex_funct = ctx->texdsp.dxt5_block;
ctx->tex_step = 16;
} else if (old_type & 0x20) {
av_log(avctx, AV_LOG_DEBUG, "LZF compression and DXT1 texture ");
ctx->tex_funct = ctx->texdsp.dxt1_block;
ctx->tex_step = 8;
} else {
av_log(avctx, AV_LOG_ERROR, "Unsupported header (0x%08X)\n.", tag);
return AVERROR_INVALIDDATA;
}
decompress_tex = dxv_decompress_lzf;
ctx->tex_rat = 1;
break;
}
/* New header is 12 bytes long. */
if (!old_type) {
channels = bytestream2_get_byte(gbc);
bytestream2_skip(gbc, 3); // unknown
size = bytestream2_get_le32(gbc);
}
av_log(avctx, AV_LOG_DEBUG, "(%d channels)\n", channels);
if (size != bytestream2_get_bytes_left(gbc)) {
av_log(avctx, AV_LOG_ERROR, "Incomplete or invalid file (%u > %u)\n.",
size, bytestream2_get_bytes_left(gbc));
return AVERROR_INVALIDDATA;
}
ctx->tex_size = avctx->coded_width * avctx->coded_height * 4 / ctx->tex_rat;
ret = av_reallocp(&ctx->tex_data, ctx->tex_size);
if (ret < 0)
return ret;
/* Decompress texture out of the intermediate compression. */
ret = decompress_tex(avctx);
if (ret < 0)
return ret;
tframe.f = data;
ret = ff_thread_get_buffer(avctx, &tframe, 0);
if (ret < 0)
return ret;
ff_thread_finish_setup(avctx);
/* Now decompress the texture with the standard functions. */
avctx->execute2(avctx, decompress_texture_thread,
tframe.f, NULL, ctx->slice_count);
/* Frame is ready to be output. */
tframe.f->pict_type = AV_PICTURE_TYPE_I;
tframe.f->key_frame = 1;
*got_frame = 1;
return avpkt->size;
}
static int mjpegb_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
const uint8_t *buf, int buf_size)
{
MJpegDecodeContext *s = avctx->priv_data;
const uint8_t *buf_end, *buf_ptr;
AVFrame *picture = data;
GetBitContext hgb; /* for the header */
uint32_t dqt_offs, dht_offs, sof_offs, sos_offs, second_field_offs;
uint32_t field_size, sod_offs;
buf_ptr = buf;
buf_end = buf + buf_size;
read_header:
/* reset on every SOI */
s->restart_interval = 0;
s->restart_count = 0;
s->mjpb_skiptosod = 0;
init_get_bits(&hgb, buf_ptr, /*buf_size*/(buf_end - buf_ptr)*8);
skip_bits(&hgb, 32); /* reserved zeros */
if (get_bits_long(&hgb, 32) != MKBETAG('m','j','p','g'))
{
av_log(avctx, AV_LOG_WARNING, "not mjpeg-b (bad fourcc)\n");
return 0;
}
field_size = get_bits_long(&hgb, 32); /* field size */
av_log(avctx, AV_LOG_DEBUG, "field size: 0x%x\n", field_size);
skip_bits(&hgb, 32); /* padded field size */
second_field_offs = get_bits_long(&hgb, 32);
av_log(avctx, AV_LOG_DEBUG, "second field offs: 0x%x\n", second_field_offs);
dqt_offs = get_bits_long(&hgb, 32);
av_log(avctx, AV_LOG_DEBUG, "dqt offs: 0x%x\n", dqt_offs);
if (dqt_offs)
{
init_get_bits(&s->gb, buf_ptr+dqt_offs, (buf_end - (buf_ptr+dqt_offs))*8);
s->start_code = DQT;
ff_mjpeg_decode_dqt(s);
}
dht_offs = get_bits_long(&hgb, 32);
av_log(avctx, AV_LOG_DEBUG, "dht offs: 0x%x\n", dht_offs);
if (dht_offs)
{
init_get_bits(&s->gb, buf_ptr+dht_offs, (buf_end - (buf_ptr+dht_offs))*8);
s->start_code = DHT;
ff_mjpeg_decode_dht(s);
}
sof_offs = get_bits_long(&hgb, 32);
av_log(avctx, AV_LOG_DEBUG, "sof offs: 0x%x\n", sof_offs);
if (sof_offs)
{
init_get_bits(&s->gb, buf_ptr+sof_offs, (buf_end - (buf_ptr+sof_offs))*8);
s->start_code = SOF0;
if (ff_mjpeg_decode_sof(s) < 0)
return -1;
}
sos_offs = get_bits_long(&hgb, 32);
av_log(avctx, AV_LOG_DEBUG, "sos offs: 0x%x\n", sos_offs);
sod_offs = get_bits_long(&hgb, 32);
av_log(avctx, AV_LOG_DEBUG, "sod offs: 0x%x\n", sod_offs);
if (sos_offs)
{
// init_get_bits(&s->gb, buf+sos_offs, (buf_end - (buf+sos_offs))*8);
init_get_bits(&s->gb, buf_ptr+sos_offs, field_size*8);
s->mjpb_skiptosod = (sod_offs - sos_offs - show_bits(&s->gb, 16));
s->start_code = SOS;
ff_mjpeg_decode_sos(s);
}
if (s->interlaced) {
s->bottom_field ^= 1;
/* if not bottom field, do not output image yet */
if (s->bottom_field != s->interlace_polarity && second_field_offs)
{
buf_ptr = buf + second_field_offs;
second_field_offs = 0;
goto read_header;
}
}
//XXX FIXME factorize, this looks very similar to the EOI code
*picture= s->picture;
*data_size = sizeof(AVFrame);
if(!s->lossless) {
picture->quality= FFMAX3(s->qscale[0], s->qscale[1], s->qscale[2]);
picture->qstride= 0;
picture->qscale_table= s->qscale_table;
memset(picture->qscale_table, picture->quality, (s->width+15)/16);
if(avctx->debug & FF_DEBUG_QP)
av_log(avctx, AV_LOG_DEBUG, "QP: %d\n", picture->quality);
picture->quality*= FF_QP2LAMBDA;
}
return buf_ptr - buf;
}
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 probe(AVProbeData *p)
{
if (AV_RB32(p->buf) == MKBETAG('c','a','f','f') && AV_RB16(&p->buf[4]) == 1)
return AVPROBE_SCORE_MAX;
return 0;
}
static void id3v2_parse(AVFormatContext *s, int len, uint8_t version, uint8_t flags)
{
int isv34, tlen;
uint32_t tag;
offset_t next;
char tmp[16];
int taghdrlen;
const char *reason;
switch(version) {
case 2:
if(flags & 0x40) {
reason = "compression";
goto error;
}
isv34 = 0;
taghdrlen = 6;
break;
case 3:
case 4:
isv34 = 1;
taghdrlen = 10;
break;
default:
reason = "version";
goto error;
}
if(flags & 0x80) {
reason = "unsynchronization";
goto error;
}
if(isv34 && flags & 0x40) /* Extended header present, just skip over it */
url_fskip(&s->pb, id3v2_get_size(&s->pb, 4));
while(len >= taghdrlen) {
if(isv34) {
tag = get_be32(&s->pb);
tlen = id3v2_get_size(&s->pb, 4);
get_be16(&s->pb); /* flags */
} else {
tag = get_be24(&s->pb);
tlen = id3v2_get_size(&s->pb, 3);
}
len -= taghdrlen + tlen;
if(len < 0)
break;
next = url_ftell(&s->pb) + tlen;
switch(tag) {
case MKBETAG('T', 'I', 'T', '2'):
case MKBETAG(0, 'T', 'T', '2'):
id3v2_read_ttag(s, tlen, s->title, sizeof(s->title));
break;
case MKBETAG('T', 'P', 'E', '1'):
case MKBETAG(0, 'T', 'P', '1'):
id3v2_read_ttag(s, tlen, s->author, sizeof(s->author));
break;
case MKBETAG('T', 'A', 'L', 'B'):
case MKBETAG(0, 'T', 'A', 'L'):
id3v2_read_ttag(s, tlen, s->album, sizeof(s->album));
break;
case MKBETAG('T', 'C', 'O', 'N'):
case MKBETAG(0, 'T', 'C', 'O'):
id3v2_read_ttag(s, tlen, s->genre, sizeof(s->genre));
break;
case MKBETAG('T', 'C', 'O', 'P'):
case MKBETAG(0, 'T', 'C', 'R'):
id3v2_read_ttag(s, tlen, s->copyright, sizeof(s->copyright));
break;
case MKBETAG('T', 'R', 'C', 'K'):
case MKBETAG(0, 'T', 'R', 'K'):
id3v2_read_ttag(s, tlen, tmp, sizeof(tmp));
s->track = atoi(tmp);
break;
case 0:
/* padding, skip to end */
url_fskip(&s->pb, len);
len = 0;
continue;
}
/* Skip to end of tag */
url_fseek(&s->pb, next, SEEK_SET);
}
if(version == 4 && flags & 0x10) /* Footer preset, always 10 bytes, skip over it */
url_fskip(&s->pb, 10);
return;
error:
av_log(s, AV_LOG_INFO, "ID3v2.%d tag skipped, cannot handle %s\n", version, reason);
url_fskip(&s->pb, len);
}
static int read_header(AVFormatContext *s)
{
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;
case MKBETAG('c','h','a','n'):
if ((ret = ff_mov_read_chan(s, st, size)) < 0)
return ret;
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;
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;
}
avpriv_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;
}
int avpriv_mpeg4audio_get_config(MPEG4AudioConfig *c, const uint8_t *buf, int buf_size)
{
GetBitContext gb;
int specific_config_bitindex;
init_get_bits(&gb, buf, buf_size*8);
c->object_type = get_object_type(&gb);
c->sample_rate = get_sample_rate(&gb, &c->sampling_index);
c->chan_config = get_bits(&gb, 4);
if (c->chan_config < FF_ARRAY_ELEMS(ff_mpeg4audio_channels))
c->channels = ff_mpeg4audio_channels[c->chan_config];
c->sbr = -1;
c->ps = -1;
if (c->object_type == AOT_SBR || (c->object_type == AOT_PS &&
// check for W6132 Annex YYYY draft MP3onMP4
!(show_bits(&gb, 3) & 0x03 && !(show_bits(&gb, 9) & 0x3F)))) {
if (c->object_type == AOT_PS)
c->ps = 1;
c->ext_object_type = AOT_SBR;
c->sbr = 1;
c->ext_sample_rate = get_sample_rate(&gb, &c->ext_sampling_index);
c->object_type = get_object_type(&gb);
if (c->object_type == AOT_ER_BSAC)
c->ext_chan_config = get_bits(&gb, 4);
} else {
c->ext_object_type = AOT_NULL;
c->ext_sample_rate = 0;
}
specific_config_bitindex = get_bits_count(&gb);
if (c->object_type == AOT_ALS) {
skip_bits(&gb, 5);
if (show_bits_long(&gb, 24) != MKBETAG('\0','A','L','S'))
skip_bits_long(&gb, 24);
specific_config_bitindex = get_bits_count(&gb);
if (parse_config_ALS(&gb, c))
return -1;
}
if (c->ext_object_type != AOT_SBR) {
while (get_bits_left(&gb) > 15) {
if (show_bits(&gb, 11) == 0x2b7) { // sync extension
get_bits(&gb, 11);
c->ext_object_type = get_object_type(&gb);
if (c->ext_object_type == AOT_SBR && (c->sbr = get_bits1(&gb)) == 1)
c->ext_sample_rate = get_sample_rate(&gb, &c->ext_sampling_index);
if (get_bits_left(&gb) > 11 && get_bits(&gb, 11) == 0x548)
c->ps = get_bits1(&gb);
break;
} else
get_bits1(&gb); // skip 1 bit
}
}
//PS requires SBR
if (!c->sbr)
c->ps = 0;
//Limit implicit PS to the HE-AACv2 Profile
if ((c->ps == -1 && c->object_type != AOT_AAC_LC) || c->channels & ~0x01)
c->ps = 0;
return specific_config_bitindex;
}
static int mjpegb_decode_frame(AVCodecContext *avctx,
void *data, int *got_frame,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
MJpegDecodeContext *s = avctx->priv_data;
const uint8_t *buf_end, *buf_ptr;
GetBitContext hgb; /* for the header */
uint32_t dqt_offs, dht_offs, sof_offs, sos_offs, second_field_offs;
uint32_t field_size, sod_offs;
int ret;
buf_ptr = buf;
buf_end = buf + buf_size;
read_header:
/* reset on every SOI */
s->restart_interval = 0;
s->restart_count = 0;
s->mjpb_skiptosod = 0;
if (buf_end - buf_ptr >= 1 << 28)
return AVERROR_INVALIDDATA;
init_get_bits(&hgb, buf_ptr, /*buf_size*/(buf_end - buf_ptr)*8);
skip_bits(&hgb, 32); /* reserved zeros */
if (get_bits_long(&hgb, 32) != MKBETAG('m','j','p','g'))
{
av_log(avctx, AV_LOG_WARNING, "not mjpeg-b (bad fourcc)\n");
return AVERROR_INVALIDDATA;
}
field_size = get_bits_long(&hgb, 32); /* field size */
av_log(avctx, AV_LOG_DEBUG, "field size: 0x%"PRIx32"\n", field_size);
skip_bits(&hgb, 32); /* padded field size */
second_field_offs = read_offs(avctx, &hgb, buf_end - buf_ptr, "second_field_offs is %d and size is %d\n");
av_log(avctx, AV_LOG_DEBUG, "second field offs: 0x%"PRIx32"\n",
second_field_offs);
dqt_offs = read_offs(avctx, &hgb, buf_end - buf_ptr, "dqt is %d and size is %d\n");
av_log(avctx, AV_LOG_DEBUG, "dqt offs: 0x%"PRIx32"\n", dqt_offs);
if (dqt_offs)
{
init_get_bits(&s->gb, buf_ptr+dqt_offs, (buf_end - (buf_ptr+dqt_offs))*8);
s->start_code = DQT;
if (ff_mjpeg_decode_dqt(s) < 0 &&
(avctx->err_recognition & AV_EF_EXPLODE))
return AVERROR_INVALIDDATA;
}
dht_offs = read_offs(avctx, &hgb, buf_end - buf_ptr, "dht is %d and size is %d\n");
av_log(avctx, AV_LOG_DEBUG, "dht offs: 0x%"PRIx32"\n", dht_offs);
if (dht_offs)
{
init_get_bits(&s->gb, buf_ptr+dht_offs, (buf_end - (buf_ptr+dht_offs))*8);
s->start_code = DHT;
ff_mjpeg_decode_dht(s);
}
sof_offs = read_offs(avctx, &hgb, buf_end - buf_ptr, "sof is %d and size is %d\n");
av_log(avctx, AV_LOG_DEBUG, "sof offs: 0x%"PRIx32"\n", sof_offs);
if (sof_offs)
{
init_get_bits(&s->gb, buf_ptr+sof_offs, (buf_end - (buf_ptr+sof_offs))*8);
s->start_code = SOF0;
if (ff_mjpeg_decode_sof(s) < 0)
return -1;
}
sos_offs = read_offs(avctx, &hgb, buf_end - buf_ptr, "sos is %d and size is %d\n");
av_log(avctx, AV_LOG_DEBUG, "sos offs: 0x%"PRIx32"\n", sos_offs);
sod_offs = read_offs(avctx, &hgb, buf_end - buf_ptr, "sof is %d and size is %d\n");
av_log(avctx, AV_LOG_DEBUG, "sod offs: 0x%"PRIx32"\n", sod_offs);
if (sos_offs)
{
init_get_bits(&s->gb, buf_ptr + sos_offs,
8 * FFMIN(field_size, buf_end - buf_ptr - sos_offs));
s->mjpb_skiptosod = (sod_offs - sos_offs - show_bits(&s->gb, 16));
s->start_code = SOS;
if (ff_mjpeg_decode_sos(s, NULL, NULL) < 0 &&
(avctx->err_recognition & AV_EF_EXPLODE))
return AVERROR_INVALIDDATA;
}
if (s->interlaced) {
s->bottom_field ^= 1;
/* if not bottom field, do not output image yet */
if (s->bottom_field != s->interlace_polarity && second_field_offs)
{
buf_ptr = buf + second_field_offs;
second_field_offs = 0;
goto read_header;
}
}
//XXX FIXME factorize, this looks very similar to the EOI code
if ((ret = av_frame_ref(data, s->picture_ptr)) < 0)
return ret;
*got_frame = 1;
if (!s->lossless && avctx->debug & FF_DEBUG_QP) {
av_log(avctx, AV_LOG_DEBUG, "QP: %d\n",
FFMAX3(s->qscale[0], s->qscale[1], s->qscale[2]));
}
return buf_size;
}
static int ffm2_read_header(AVFormatContext *s)
{
FFMContext *ffm = s->priv_data;
AVStream *st;
AVIOContext *pb = s->pb;
AVCodecContext *codec;
int ret;
int f_main = 0, f_cprv, f_stvi, f_stau;
AVCodec *enc;
char *buffer;
ffm->packet_size = avio_rb32(pb);
if (ffm->packet_size != FFM_PACKET_SIZE) {
av_log(s, AV_LOG_ERROR, "Invalid packet size %d, expected size was %d\n",
ffm->packet_size, FFM_PACKET_SIZE);
ret = AVERROR_INVALIDDATA;
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(!avio_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'):
if (f_main++) {
ret = AVERROR(EINVAL);
goto fail;
}
avio_rb32(pb); /* nb_streams */
avio_rb32(pb); /* total bitrate */
break;
case MKBETAG('C', 'O', 'M', 'M'):
f_cprv = f_stvi = f_stau = 0;
st = avformat_new_stream(s, NULL);
if (!st) {
ret = AVERROR(ENOMEM);
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);
}
break;
case MKBETAG('S', 'T', 'V', 'I'):
if (f_stvi++) {
ret = AVERROR(EINVAL);
goto fail;
}
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'):
if (f_stau++) {
ret = AVERROR(EINVAL);
goto fail;
}
codec->sample_rate = avio_rb32(pb);
codec->channels = avio_rl16(pb);
codec->frame_size = avio_rl16(pb);
break;
case MKBETAG('C', 'P', 'R', 'V'):
if (f_cprv++) {
ret = AVERROR(EINVAL);
goto fail;
}
enc = avcodec_find_encoder(codec->codec_id);
if (enc && enc->priv_data_size && enc->priv_class) {
st->recommended_encoder_configuration = av_malloc(size + 1);
if (!st->recommended_encoder_configuration) {
ret = AVERROR(ENOMEM);
goto fail;
}
avio_get_str(pb, size, st->recommended_encoder_configuration, size + 1);
}
break;
case MKBETAG('S', '2', 'V', 'I'):
if (f_stvi++) {
ret = AVERROR(EINVAL);
goto fail;
}
buffer = av_malloc(size);
if (!buffer) {
ret = AVERROR(ENOMEM);
goto fail;
}
avio_get_str(pb, INT_MAX, buffer, size);
av_set_options_string(codec, buffer, "=", ",");
av_freep(&buffer);
break;
case MKBETAG('S', '2', 'A', 'U'):
if (f_stau++) {
ret = AVERROR(EINVAL);
goto fail;
}
buffer = av_malloc(size);
if (!buffer) {
ret = AVERROR(ENOMEM);
goto fail;
}
avio_get_str(pb, INT_MAX, buffer, size);
av_set_options_string(codec, buffer, "=", ",");
av_freep(&buffer);
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 ret;
}
tsmb++;
m->s_temp->fontsize = AV_RB8(tsmb);
av_dynarray_add(&m->s, &m->count_s, m->s_temp);
if(!m->s) {
mov_text_cleanup(m);
return AVERROR(ENOMEM);
}
tsmb++;
// text-color-rgba
tsmb += 4;
}
return 0;
}
static const Box box_types[] = {
{ MKBETAG('s','t','y','l'), 2, decode_styl },
{ MKBETAG('h','l','i','t'), 4, decode_hlit },
{ MKBETAG('h','c','l','r'), 4, decode_hclr },
{ MKBETAG('t','w','r','p'), 1, decode_twrp }
};
const static size_t box_count = FF_ARRAY_ELEMS(box_types);
static int text_to_ass(AVBPrint *buf, const char *text, const char *text_end,
MovTextContext *m)
{
int i = 0;
int j = 0;
int text_pos = 0;
if (text < text_end && m->box_flags & TWRP_BOX) {