static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
AVPacket *avpkt)
{
FRWUContext *s = avctx->priv_data;
int field, ret;
AVFrame *pic = data;
const uint8_t *buf = avpkt->data;
const uint8_t *buf_end = buf + avpkt->size;
if (avpkt->size < avctx->width * 2 * avctx->height + 4 + 2*8) {
av_log(avctx, AV_LOG_ERROR, "Packet is too small.\n");
return AVERROR_INVALIDDATA;
}
if (bytestream_get_le32(&buf) != MKTAG('F', 'R', 'W', '1')) {
av_log(avctx, AV_LOG_ERROR, "incorrect marker\n");
return AVERROR_INVALIDDATA;
}
if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
return ret;
pic->pict_type = AV_PICTURE_TYPE_I;
pic->key_frame = 1;
for (field = 0; field < 2; field++) {
int i;
int field_h = (avctx->height + !field) >> 1;
int field_size, min_field_size = avctx->width * 2 * field_h;
uint8_t *dst = pic->data[0];
if (buf_end - buf < 8)
return AVERROR_INVALIDDATA;
buf += 4; // flags? 0x80 == bottom field maybe?
field_size = bytestream_get_le32(&buf);
if (field_size < min_field_size) {
av_log(avctx, AV_LOG_ERROR, "Field size %i is too small (required %i)\n", field_size, min_field_size);
return AVERROR_INVALIDDATA;
}
if (buf_end - buf < field_size) {
av_log(avctx, AV_LOG_ERROR, "Packet is too small, need %i, have %i\n", field_size, (int)(buf_end - buf));
return AVERROR_INVALIDDATA;
}
if (field ^ s->change_field_order) {
dst += pic->linesize[0];
} else if (s->change_field_order) {
dst += 2 * pic->linesize[0];
}
for (i = 0; i < field_h; i++) {
if (s->change_field_order && field && i == field_h - 1)
dst = pic->data[0];
memcpy(dst, buf, avctx->width * 2);
buf += avctx->width * 2;
dst += pic->linesize[0] << 1;
}
buf += field_size - min_field_size;
}
*got_frame = 1;
return avpkt->size;
}
static int msnwc_tcp_probe(AVProbeData *p)
{
int i;
for(i = 0 ; i + HEADER_SIZE <= p->buf_size ; i++) {
uint16_t width, height;
uint32_t fourcc;
const uint8_t *bytestream = p->buf+i;
if(bytestream_get_le16(&bytestream) != HEADER_SIZE)
continue;
width = bytestream_get_le16(&bytestream);
height = bytestream_get_le16(&bytestream);
if(!(width==320 && height==240) && !(width==160 && height==120))
continue;
bytestream += 2; // keyframe
bytestream += 4; // size
fourcc = bytestream_get_le32(&bytestream);
if(fourcc != MKTAG('M', 'L', '2', '0'))
continue;
if(i) {
if(i < 14) /* starts with SwitchBoard connection info */
return AVPROBE_SCORE_MAX / 2;
else /* starts in the middle of stream */
return AVPROBE_SCORE_MAX / 3;
} else {
return AVPROBE_SCORE_MAX;
}
}
return -1;
}
static av_cold int decode_init(AVCodecContext *avctx)
{
AnmContext *s = avctx->priv_data;
const uint8_t *buf;
int i;
avctx->pix_fmt = PIX_FMT_PAL8;
if (avctx->extradata_size != 16*8 + 4*256)
return -1;
s->frame.reference = 1;
buf = avctx->extradata + 16*8;
for (i = 0; i < 256; i++)
s->palette[i] = bytestream_get_le32(&buf);
return 0;
}
static int mimic_decode_frame(AVCodecContext *avctx, void *data,
int *data_size, const uint8_t *buf, int buf_size)
{
MimicContext *ctx = avctx->priv_data;
int is_pframe;
int width, height;
int quality, num_coeffs;
int swap_buf_size = buf_size - MIMIC_HEADER_SIZE;
if(buf_size < MIMIC_HEADER_SIZE) {
av_log(avctx, AV_LOG_ERROR, "insufficient data\n");
return -1;
}
buf += 2; /* some constant (always 256) */
quality = bytestream_get_le16(&buf);
width = bytestream_get_le16(&buf);
height = bytestream_get_le16(&buf);
buf += 4; /* some constant */
is_pframe = bytestream_get_le32(&buf);
num_coeffs = bytestream_get_byte(&buf);
buf += 3; /* some constant */
if(!ctx->avctx) {
int i;
if(!(width == 160 && height == 120) &&
!(width == 320 && height == 240)) {
av_log(avctx, AV_LOG_ERROR, "invalid width/height!\n");
return -1;
}
ctx->avctx = avctx;
avctx->width = width;
avctx->height = height;
avctx->pix_fmt = PIX_FMT_YUV420P;
for(i = 0; i < 3; i++) {
ctx->num_vblocks[i] = -((-height) >> (3 + !!i));
ctx->num_hblocks[i] = width >> (3 + !!i) ;
}
} else if(width != ctx->avctx->width || height != ctx->avctx->height) {
static av_cold int decode_init(AVCodecContext *avctx)
{
AnmContext *s = avctx->priv_data;
const uint8_t *buf;
int i;
avctx->pix_fmt = PIX_FMT_PAL8;
if (avctx->extradata_size != 16*8 + 4*256)
return -1;
s->frame.reference = 1;
if (avctx->get_buffer(avctx, &s->frame) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
buf = avctx->extradata + 16*8;
for (i = 0; i < 256; i++)
((uint32_t*)s->frame.data[1])[i] = bytestream_get_le32(&buf);
return 0;
}
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
AVPacket *avpkt)
{
int field, ret;
AVFrame *pic = avctx->coded_frame;
const uint8_t *buf = avpkt->data;
const uint8_t *buf_end = buf + avpkt->size;
if (pic->data[0])
avctx->release_buffer(avctx, pic);
if (avpkt->size < avctx->width * 2 * avctx->height + 4 + 2*8) {
av_log(avctx, AV_LOG_ERROR, "Packet is too small.\n");
return AVERROR_INVALIDDATA;
}
if (bytestream_get_le32(&buf) != AV_RL32("FRW1")) {
av_log(avctx, AV_LOG_ERROR, "incorrect marker\n");
return AVERROR_INVALIDDATA;
}
pic->reference = 0;
if ((ret = avctx->get_buffer(avctx, pic)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
pic->pict_type = AV_PICTURE_TYPE_I;
pic->key_frame = 1;
pic->interlaced_frame = 1;
pic->top_field_first = 1;
for (field = 0; field < 2; field++) {
int i;
int field_h = (avctx->height + !field) >> 1;
int field_size, min_field_size = avctx->width * 2 * field_h;
uint8_t *dst = pic->data[0];
if (buf_end - buf < 8)
return AVERROR_INVALIDDATA;
buf += 4; // flags? 0x80 == bottom field maybe?
field_size = bytestream_get_le32(&buf);
if (field_size < min_field_size) {
av_log(avctx, AV_LOG_ERROR, "Field size %i is too small (required %i)\n", field_size, min_field_size);
return AVERROR_INVALIDDATA;
}
if (buf_end - buf < field_size) {
av_log(avctx, AV_LOG_ERROR, "Packet is too small, need %i, have %i\n", field_size, (int)(buf_end - buf));
return AVERROR_INVALIDDATA;
}
if (field)
dst += pic->linesize[0];
for (i = 0; i < field_h; i++) {
memcpy(dst, buf, avctx->width * 2);
buf += avctx->width * 2;
dst += pic->linesize[0] << 1;
}
buf += field_size - min_field_size;
}
*data_size = sizeof(AVFrame);
*(AVFrame*)data = *pic;
return avpkt->size;
}
static int decode_frame(AVCodecContext *avctx, void *data,
int *data_size, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
C93DecoderContext * const c93 = avctx->priv_data;
AVFrame * const newpic = &c93->pictures[c93->currentpic];
AVFrame * const oldpic = &c93->pictures[c93->currentpic^1];
AVFrame *picture = data;
uint8_t *out;
int stride, i, x, y, bt = 0;
c93->currentpic ^= 1;
newpic->reference = 1;
newpic->buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE |
FF_BUFFER_HINTS_REUSABLE | FF_BUFFER_HINTS_READABLE;
if (avctx->reget_buffer(avctx, newpic)) {
av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
return -1;
}
stride = newpic->linesize[0];
if (buf[0] & C93_FIRST_FRAME) {
newpic->pict_type = FF_I_TYPE;
newpic->key_frame = 1;
} else {
newpic->pict_type = FF_P_TYPE;
newpic->key_frame = 0;
}
if (*buf++ & C93_HAS_PALETTE) {
uint32_t *palette = (uint32_t *) newpic->data[1];
const uint8_t *palbuf = buf + buf_size - 768 - 1;
for (i = 0; i < 256; i++) {
palette[i] = bytestream_get_be24(&palbuf);
}
} else {
if (oldpic->data[1])
memcpy(newpic->data[1], oldpic->data[1], 256 * 4);
}
for (y = 0; y < HEIGHT; y += 8) {
out = newpic->data[0] + y * stride;
for (x = 0; x < WIDTH; x += 8) {
uint8_t *copy_from = oldpic->data[0];
unsigned int offset, j;
uint8_t cols[4], grps[4];
C93BlockType block_type;
if (!bt)
bt = *buf++;
block_type= bt & 0x0F;
switch (block_type) {
case C93_8X8_FROM_PREV:
offset = bytestream_get_le16(&buf);
if (copy_block(avctx, out, copy_from, offset, 8, stride))
return -1;
break;
case C93_4X4_FROM_CURR:
copy_from = newpic->data[0];
case C93_4X4_FROM_PREV:
for (j = 0; j < 8; j += 4) {
for (i = 0; i < 8; i += 4) {
offset = bytestream_get_le16(&buf);
if (copy_block(avctx, &out[j*stride+i],
copy_from, offset, 4, stride))
return -1;
}
}
break;
case C93_8X8_2COLOR:
bytestream_get_buffer(&buf, cols, 2);
for (i = 0; i < 8; i++) {
draw_n_color(out + i*stride, stride, 8, 1, 1, cols,
NULL, *buf++);
}
break;
case C93_4X4_2COLOR:
case C93_4X4_4COLOR:
case C93_4X4_4COLOR_GRP:
for (j = 0; j < 8; j += 4) {
for (i = 0; i < 8; i += 4) {
if (block_type == C93_4X4_2COLOR) {
bytestream_get_buffer(&buf, cols, 2);
draw_n_color(out + i + j*stride, stride, 4, 4,
1, cols, NULL, bytestream_get_le16(&buf));
} else if (block_type == C93_4X4_4COLOR) {
bytestream_get_buffer(&buf, cols, 4);
draw_n_color(out + i + j*stride, stride, 4, 4,
2, cols, NULL, bytestream_get_le32(&buf));
} else {
bytestream_get_buffer(&buf, grps, 4);
draw_n_color(out + i + j*stride, stride, 4, 4,
1, cols, grps, bytestream_get_le16(&buf));
}
}
}
break;
case C93_NOOP:
break;
case C93_8X8_INTRA:
for (j = 0; j < 8; j++)
bytestream_get_buffer(&buf, out + j*stride, 8);
break;
default:
av_log(avctx, AV_LOG_ERROR, "unexpected type %x at %dx%d\n",
block_type, x, y);
return -1;
}
bt >>= 4;
out += 8;
}
}
*picture = *newpic;
*data_size = sizeof(AVFrame);
return buf_size;
}
static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
{
MpegTSContext *ts = filter->u.section_filter.opaque;
SectionHeader h1, *h = &h1;
PESContext *pes;
AVStream *st;
const uint8_t *p, *p_end, *desc_list_end, *desc_end;
int program_info_length, pcr_pid, pid, stream_type;
int desc_list_len, desc_len, desc_tag;
int comp_page = 0, anc_page = 0; /* initialize to kill warnings */
char language[4] = {0}; /* initialize to kill warnings */
int has_hdmv_descr = 0;
int has_dirac_descr = 0;
uint32_t reg_desc = 0; /* registration descriptor */
#ifdef DEBUG
dprintf(ts->stream, "PMT: len %i\n", section_len);
av_hex_dump_log(ts->stream, AV_LOG_DEBUG, (uint8_t *)section, section_len);
#endif
p_end = section + section_len - 4;
p = section;
if (parse_section_header(h, &p, p_end) < 0)
return;
dprintf(ts->stream, "sid=0x%x sec_num=%d/%d\n",
h->id, h->sec_num, h->last_sec_num);
if (h->tid != PMT_TID)
return;
clear_program(ts, h->id);
pcr_pid = get16(&p, p_end) & 0x1fff;
if (pcr_pid < 0)
return;
add_pid_to_pmt(ts, h->id, pcr_pid);
dprintf(ts->stream, "pcr_pid=0x%x\n", pcr_pid);
program_info_length = get16(&p, p_end) & 0xfff;
if (program_info_length < 0)
return;
while(program_info_length >= 2) {
uint8_t tag, len;
tag = get8(&p, p_end);
len = get8(&p, p_end);
if(len > program_info_length - 2)
//something else is broken, exit the program_descriptors_loop
break;
program_info_length -= len + 2;
if(tag == REGISTRATION_DESCRIPTOR && len >= 4) {
reg_desc = bytestream_get_le32(&p);
len -= 4;
if(reg_desc == AV_RL32("HDMV"))
has_hdmv_descr = 1;
}
p += len;
}
p += program_info_length;
if (p >= p_end)
return;
for(;;) {
language[0] = 0;
st = 0;
stream_type = get8(&p, p_end);
if (stream_type < 0)
break;
pid = get16(&p, p_end) & 0x1fff;
if (pid < 0)
break;
desc_list_len = get16(&p, p_end) & 0xfff;
if (desc_list_len < 0)
break;
desc_list_end = p + desc_list_len;
if (desc_list_end > p_end)
break;
for(;;) {
desc_tag = get8(&p, desc_list_end);
if (desc_tag < 0)
break;
if (stream_type == STREAM_TYPE_PRIVATE_DATA) {
if((desc_tag == 0x6A) || (desc_tag == 0x7A)) {
/*assume DVB AC-3 Audio*/
stream_type = STREAM_TYPE_AUDIO_AC3;
} else if(desc_tag == 0x7B) {
/* DVB DTS audio */
stream_type = STREAM_TYPE_AUDIO_DTS;
}
}
desc_len = get8(&p, desc_list_end);
if (desc_len < 0)
break;
desc_end = p + desc_len;
if (desc_end > desc_list_end)
break;
dprintf(ts->stream, "tag: 0x%02x len=%d\n",
desc_tag, desc_len);
switch(desc_tag) {
case DVB_SUBT_DESCID:
if (stream_type == STREAM_TYPE_PRIVATE_DATA)
stream_type = STREAM_TYPE_SUBTITLE_DVB;
language[0] = get8(&p, desc_end);
language[1] = get8(&p, desc_end);
language[2] = get8(&p, desc_end);
language[3] = 0;
get8(&p, desc_end);
comp_page = get16(&p, desc_end);
anc_page = get16(&p, desc_end);
break;
case 0x0a: /* ISO 639 language descriptor */
language[0] = get8(&p, desc_end);
language[1] = get8(&p, desc_end);
language[2] = get8(&p, desc_end);
language[3] = 0;
break;
case REGISTRATION_DESCRIPTOR: /*MPEG-2 Registration descriptor */
reg_desc = bytestream_get_le32(&p);
if(reg_desc == AV_RL32("drac"))
has_dirac_descr = 1;
else if(reg_desc == AV_RL32("AC-3"))
stream_type = STREAM_TYPE_AUDIO_AC3;
break;
default:
break;
}
p = desc_end;
}
p = desc_list_end;
dprintf(ts->stream, "stream_type=%x pid=0x%x\n",
stream_type, pid);
/* now create ffmpeg stream */
switch(stream_type) {
case STREAM_TYPE_AUDIO_MPEG1:
case STREAM_TYPE_AUDIO_MPEG2:
case STREAM_TYPE_VIDEO_MPEG1:
case STREAM_TYPE_VIDEO_MPEG2:
case STREAM_TYPE_VIDEO_MPEG4:
case STREAM_TYPE_VIDEO_H264:
case STREAM_TYPE_VIDEO_VC1:
case STREAM_TYPE_VIDEO_DIRAC:
case STREAM_TYPE_AUDIO_AAC:
case STREAM_TYPE_AUDIO_AC3:
case STREAM_TYPE_AUDIO_DTS:
case STREAM_TYPE_AUDIO_HDMV_DTS:
case STREAM_TYPE_SUBTITLE_DVB:
if((stream_type == STREAM_TYPE_AUDIO_HDMV_DTS && !has_hdmv_descr)
|| (stream_type == STREAM_TYPE_VIDEO_DIRAC && !has_dirac_descr))
break;
if(ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES){
pes= ts->pids[pid]->u.pes_filter.opaque;
st= pes->st;
}else{
if (ts->pids[pid]) mpegts_close_filter(ts, ts->pids[pid]); //wrongly added sdt filter probably
pes = add_pes_stream(ts, pid, pcr_pid, stream_type);
if (pes)
st = new_pes_av_stream(pes, 0);
}
add_pid_to_pmt(ts, h->id, pid);
if(st)
av_program_add_stream_index(ts->stream, h->id, st->index);
break;
default:
/* we ignore the other streams */
break;
}
if (st) {
if (language[0] != 0) {
av_metadata_set(&st->metadata, "language", language);
}
if (stream_type == STREAM_TYPE_SUBTITLE_DVB) {
st->codec->sub_id = (anc_page << 16) | comp_page;
}
}
}
/* all parameters are there */
ts->stop_parse++;
mpegts_close_filter(ts, filter);
}
static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
{
int size = 0, ret;
const uint8_t *data;
uint32_t flags;
data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
if (!data)
return 0;
if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
"changes, but PARAM_CHANGE side data was sent to it.\n");
ret = AVERROR(EINVAL);
goto fail2;
}
if (size < 4)
goto fail;
flags = bytestream_get_le32(&data);
size -= 4;
if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
if (size < 4)
goto fail;
avctx->channels = bytestream_get_le32(&data);
size -= 4;
}
if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
if (size < 8)
goto fail;
avctx->channel_layout = bytestream_get_le64(&data);
size -= 8;
}
if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
if (size < 4)
goto fail;
avctx->sample_rate = bytestream_get_le32(&data);
size -= 4;
}
if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
if (size < 8)
goto fail;
avctx->width = bytestream_get_le32(&data);
avctx->height = bytestream_get_le32(&data);
size -= 8;
ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
if (ret < 0)
goto fail2;
}
return 0;
fail:
av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
ret = AVERROR_INVALIDDATA;
fail2:
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
if (avctx->err_recognition & AV_EF_EXPLODE)
return ret;
}
return 0;
}
/* Decoder for mpff format. Copies data from the passed in *AVPacket to the data pointer argument
*/
static int mpff_decode_frame(AVCodecContext *avctx,
void *data, int *got_frame,
AVPacket *avpkt)
{
//Pointer to the av packet's data
const uint8_t *buf = avpkt->data;
//The size of the buffer is the size of the avpacket
int buf_size = avpkt->size;
//Sets up a AVFrame pointer to the data pointer
AVFrame *p = data;
int width, height, linesize, ret;
int i, j;
//byte toadd;
uint8_t *ptr, *ptr0;
//Conditional statement checks that the header file indicates
//mpff format
if (bytestream_get_byte(&buf) != 'M' ||bytestream_get_byte(&buf) != 'P' ||bytestream_get_byte(&buf) != 'F' ||bytestream_get_byte(&buf) != 'F') {
av_log(avctx, AV_LOG_ERROR, "bad magic number\n");
return AVERROR_INVALIDDATA;
}
//Get the width out of the buffer
width = bytestream_get_le32(&buf);
//Get the height out of the buffer
height = bytestream_get_le32(&buf);
//set up the av context
avctx->width = width;
avctx->height = height;
//RGB8 is the only pixel fmt supported (see structure)
avctx->pix_fmt = AV_PIX_FMT_RGB8;
//Set up av context
if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
return ret;
p->pict_type = AV_PICTURE_TYPE_I;
p->key_frame = 1;
//ptr is the frame's data and the line size is just
//the size of the frame
ptr = p->data[0];
ptr0 = ptr;
linesize = p->linesize[0];
//Loop over each line of the image
for (i = 0; i < avctx->height; i++)
{
for (j = 0; j < avctx->width; j++)
{
//Copy the bits from ptr to the buffer
//advance the buffer and ptr pointers
bytestream_put_byte(&ptr, bytestream_get_byte(&buf));
}
ptr = ptr0 + linesize;
ptr0 = ptr;
/*
//copy the bits from the buffer to ptr
memcpy(ptr, buf, width);
//Move the buffer and ptr pointer up
buf += linesize; //width;
ptr += linesize;
*/
}
*got_frame = 1;
return buf_size;
}
// decodes the frame
static int utah_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
{
UTAHContext *context = avctx->priv_data;
const uint8_t *buffer = avpkt->data;
uint8_t* pic_buffer;
int buffer_size = avpkt->size;
int height = 0;
int width = 0;
int ret;
int hsize = 14;
int line = 0;
int n_bytes = 0;
AVFrame *picture = data;
AVFrame *pic = &context->picture;
avctx->pix_fmt = AV_PIX_FMT_RGB24;
// ensure the image has the correct header size
if(buffer_size < hsize)
{
av_log(avctx, AV_LOG_ERROR, "Image is not a .utah image(invalid hsize size)\n");
return AVERROR_INVALIDDATA;
}
// ensure the image is a utah image
if(bytestream_get_byte(&buffer) != 'U' || bytestream_get_byte(&buffer)!='T')
{
av_log(avctx, AV_LOG_ERROR, "Invalid .utah image\n");
return AVERROR_INVALIDDATA;
}
height = bytestream_get_le32(&buffer);// Get the height from the packet buffer
width = bytestream_get_le32(&buffer);// get the width from the packet buffer
avctx->height = height;
line = bytestream_get_le32(&buffer);
avctx->width =width;
// get the number of bytes
n_bytes = height*line + hsize;
if(n_bytes != buffer_size)
{
av_log(avctx, AV_LOG_ERROR, "Invalid image size");
return AVERROR_INVALIDDATA;
}
if (pic->data[0])
{
avctx->release_buffer(avctx, pic);
}
pic->reference = 0;
if ((ret = ff_get_buffer(avctx, pic)) < 0) {
return ret;
}
memset(pic->data[0], 0, height*pic->linesize[0]);
pic_buffer = pic->data[0];
for(int row = 0; row<fheight;row++)
{
memcpy(pic_buffer, buffer, line);
pic_buffer += pic->linesize[0];
buffer += line;
}
*picture = context->picture;
*got_frame = 1;
return buffer_size;
}
static void pmt_cb(MpegTSFilter *filter, const uint8_t *section, int section_len)
{
MpegTSContext *ts = filter->u.section_filter.opaque;
SectionHeader h1, *h = &h1;
PESContext *pes;
AVStream *st;
const uint8_t *p, *p_end, *desc_list_end, *desc_end;
int program_info_length, pcr_pid, pid, stream_type;
int desc_list_len, desc_len, desc_tag;
int comp_page, anc_page;
char language[4];
uint32_t prog_reg_desc = 0; /* registration descriptor */
#ifdef DEBUG
dprintf(ts->stream, "PMT: len %i\n", section_len);
av_hex_dump_log(ts->stream, AV_LOG_DEBUG, (uint8_t *)section, section_len);
#endif
p_end = section + section_len - 4;
p = section;
if (parse_section_header(h, &p, p_end) < 0)
return;
dprintf(ts->stream, "sid=0x%x sec_num=%d/%d\n",
h->id, h->sec_num, h->last_sec_num);
if (h->tid != PMT_TID)
return;
clear_program(ts, h->id);
pcr_pid = get16(&p, p_end) & 0x1fff;
if (pcr_pid < 0)
return;
add_pid_to_pmt(ts, h->id, pcr_pid);
dprintf(ts->stream, "pcr_pid=0x%x\n", pcr_pid);
program_info_length = get16(&p, p_end) & 0xfff;
if (program_info_length < 0)
return;
while(program_info_length >= 2) {
uint8_t tag, len;
tag = get8(&p, p_end);
len = get8(&p, p_end);
if(len > program_info_length - 2)
//something else is broken, exit the program_descriptors_loop
break;
program_info_length -= len + 2;
if(tag == 0x05 && len >= 4) { // registration descriptor
prog_reg_desc = bytestream_get_le32(&p);
len -= 4;
}
p += len;
}
p += program_info_length;
if (p >= p_end)
return;
for(;;) {
st = 0;
stream_type = get8(&p, p_end);
if (stream_type < 0)
break;
pid = get16(&p, p_end) & 0x1fff;
if (pid < 0)
break;
/* now create ffmpeg stream */
if (ts->pids[pid] && ts->pids[pid]->type == MPEGTS_PES) {
pes = ts->pids[pid]->u.pes_filter.opaque;
st = pes->st;
} else {
if (ts->pids[pid]) mpegts_close_filter(ts, ts->pids[pid]); //wrongly added sdt filter probably
pes = add_pes_stream(ts, pid, pcr_pid, stream_type);
if (pes)
st = new_pes_av_stream(pes, prog_reg_desc, 0);
}
if (!st)
return;
add_pid_to_pmt(ts, h->id, pid);
av_program_add_stream_index(ts->stream, h->id, st->index);
desc_list_len = get16(&p, p_end) & 0xfff;
if (desc_list_len < 0)
break;
desc_list_end = p + desc_list_len;
if (desc_list_end > p_end)
break;
for(;;) {
desc_tag = get8(&p, desc_list_end);
if (desc_tag < 0)
break;
desc_len = get8(&p, desc_list_end);
if (desc_len < 0)
break;
desc_end = p + desc_len;
if (desc_end > desc_list_end)
break;
dprintf(ts->stream, "tag: 0x%02x len=%d\n",
desc_tag, desc_len);
if (st->codec->codec_id == CODEC_ID_PROBE &&
stream_type == STREAM_TYPE_PRIVATE_DATA)
mpegts_find_stream_type(st, desc_tag, DESC_types);
switch(desc_tag) {
case 0x59: /* subtitling descriptor */
language[0] = get8(&p, desc_end);
language[1] = get8(&p, desc_end);
language[2] = get8(&p, desc_end);
language[3] = 0;
get8(&p, desc_end);
comp_page = get16(&p, desc_end);
anc_page = get16(&p, desc_end);
st->codec->sub_id = (anc_page << 16) | comp_page;
av_metadata_set(&st->metadata, "language", language);
break;
case 0x0a: /* ISO 639 language descriptor */
language[0] = get8(&p, desc_end);
language[1] = get8(&p, desc_end);
language[2] = get8(&p, desc_end);
language[3] = 0;
av_metadata_set(&st->metadata, "language", language);
break;
case 0x05: /* registration descriptor */
st->codec->codec_tag = bytestream_get_le32(&p);
dprintf(ts->stream, "reg_desc=%.4s\n", (char*)&st->codec->codec_tag);
if (st->codec->codec_id == CODEC_ID_PROBE &&
stream_type == STREAM_TYPE_PRIVATE_DATA)
mpegts_find_stream_type(st, st->codec->codec_tag, REGD_types);
break;
default:
break;
}
p = desc_end;
}
p = desc_list_end;
}
/* all parameters are there */
ts->stop_parse++;
mpegts_close_filter(ts, filter);
}
