* Ogg bitstream support
* Luca Barbato <lu_zero@gentoo.org>
* Based on tcvp implementation
- *
*/
-/**
+/*
Copyright (C) 2005 Michael Ahlberg, Måns Rullgård
Permission is hereby granted, free of charge, to any person
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
-**/
+ */
#include <stdio.h>
#include "oggdec.h"
#include "avformat.h"
+#include "internal.h"
#include "vorbiscomment.h"
#define MAX_PAGE_SIZE 65307
{
struct ogg *ogg = s->priv_data;
struct ogg_state *ost =
- av_malloc(sizeof (*ost) + (ogg->nstreams-1) * sizeof (*ogg->streams));
+ av_malloc(sizeof(*ost) + (ogg->nstreams - 1) * sizeof(*ogg->streams));
int i;
- ost->pos = avio_tell (s->pb);
- ost->curidx = ogg->curidx;
- ost->next = ogg->state;
+ ost->pos = avio_tell(s->pb);
+ ost->curidx = ogg->curidx;
+ ost->next = ogg->state;
ost->nstreams = ogg->nstreams;
memcpy(ost->streams, ogg->streams, ogg->nstreams * sizeof(*ogg->streams));
- for (i = 0; i < ogg->nstreams; i++){
+ for (i = 0; i < ogg->nstreams; i++) {
struct ogg_stream *os = ogg->streams + i;
- os->buf = av_malloc (os->bufsize);
- memset (os->buf, 0, os->bufsize);
- memcpy (os->buf, ost->streams[i].buf, os->bufpos);
+ os->buf = av_mallocz(os->bufsize + FF_INPUT_BUFFER_PADDING_SIZE);
+ memcpy(os->buf, ost->streams[i].buf, os->bufpos);
}
ogg->state = ost;
ogg->state = ost->next;
- if (!discard){
+ if (!discard) {
struct ogg_stream *old_streams = ogg->streams;
for (i = 0; i < ogg->nstreams; i++)
- av_free (ogg->streams[i].buf);
+ av_free(ogg->streams[i].buf);
- avio_seek (bc, ost->pos, SEEK_SET);
- ogg->curidx = ost->curidx;
+ avio_seek(bc, ost->pos, SEEK_SET);
+ ogg->curidx = ost->curidx;
ogg->nstreams = ost->nstreams;
- ogg->streams = av_realloc (ogg->streams,
- ogg->nstreams * sizeof (*ogg->streams));
+ ogg->streams = av_realloc(ogg->streams,
+ ogg->nstreams * sizeof(*ogg->streams));
if (ogg->streams) {
memcpy(ogg->streams, ost->streams,
}
}
- av_free (ost);
+ av_free(ost);
return 0;
}
{
int i;
- for (i = 0; i < ogg->nstreams; i++){
+ for (i = 0; i < ogg->nstreams; i++) {
struct ogg_stream *os = ogg->streams + i;
- os->bufpos = 0;
- os->pstart = 0;
- os->psize = 0;
- os->granule = -1;
- os->lastpts = AV_NOPTS_VALUE;
- os->lastdts = AV_NOPTS_VALUE;
- os->sync_pos = -1;
- os->page_pos = 0;
- os->nsegs = 0;
- os->segp = 0;
+ os->bufpos = 0;
+ os->pstart = 0;
+ os->psize = 0;
+ os->granule = -1;
+ os->lastpts = AV_NOPTS_VALUE;
+ os->lastdts = AV_NOPTS_VALUE;
+ os->sync_pos = -1;
+ os->page_pos = 0;
+ os->nsegs = 0;
+ os->segp = 0;
os->incomplete = 0;
}
for (i = 0; ogg_codecs[i]; i++)
if (size >= ogg_codecs[i]->magicsize &&
- !memcmp (buf, ogg_codecs[i]->magic, ogg_codecs[i]->magicsize))
+ !memcmp(buf, ogg_codecs[i]->magic, ogg_codecs[i]->magicsize))
return ogg_codecs[i];
return NULL;
static int ogg_new_stream(AVFormatContext *s, uint32_t serial, int new_avstream)
{
-
struct ogg *ogg = s->priv_data;
- int idx = ogg->nstreams++;
+ int idx = ogg->nstreams++;
AVStream *st;
struct ogg_stream *os;
- ogg->streams = av_realloc (ogg->streams,
- ogg->nstreams * sizeof (*ogg->streams));
- memset (ogg->streams + idx, 0, sizeof (*ogg->streams));
- os = ogg->streams + idx;
- os->serial = serial;
- os->bufsize = DECODER_BUFFER_SIZE;
- os->buf = av_malloc(os->bufsize);
- os->header = -1;
+ os = av_realloc(ogg->streams, ogg->nstreams * sizeof(*ogg->streams));
+
+ if (!os)
+ return AVERROR(ENOMEM);
+
+ ogg->streams = os;
+
+ memset(ogg->streams + idx, 0, sizeof(*ogg->streams));
+
+ os = ogg->streams + idx;
+ os->serial = serial;
+ os->bufsize = DECODER_BUFFER_SIZE;
+ os->buf = av_malloc(os->bufsize + FF_INPUT_BUFFER_PADDING_SIZE);
+ os->header = -1;
+ os->start_granule = OGG_NOGRANULE_VALUE;
if (new_avstream) {
st = avformat_new_stream(s, NULL);
return AVERROR(ENOMEM);
st->id = idx;
- av_set_pts_info(st, 64, 1, 1000000);
+ avpriv_set_pts_info(st, 64, 1, 1000000);
}
return idx;
static int ogg_new_buf(struct ogg *ogg, int idx)
{
struct ogg_stream *os = ogg->streams + idx;
- uint8_t *nb = av_malloc(os->bufsize);
+ uint8_t *nb = av_malloc(os->bufsize + FF_INPUT_BUFFER_PADDING_SIZE);
int size = os->bufpos - os->pstart;
- if(os->buf){
+
+ if (os->buf) {
memcpy(nb, os->buf + os->pstart, size);
av_free(os->buf);
}
- os->buf = nb;
+
+ os->buf = nb;
os->bufpos = size;
os->pstart = 0;
if (ret < 4)
return ret < 0 ? ret : AVERROR_EOF;
- do{
+ do {
int c;
if (sync[sp & 3] == 'O' &&
break;
c = avio_r8(bc);
+
if (bc->eof_reached)
return AVERROR_EOF;
+
sync[sp++ & 3] = c;
- }while (i++ < MAX_PAGE_SIZE);
+ } while (i++ < MAX_PAGE_SIZE);
- if (i >= MAX_PAGE_SIZE){
- av_log (s, AV_LOG_INFO, "ogg, can't find sync word\n");
+ if (i >= MAX_PAGE_SIZE) {
+ av_log(s, AV_LOG_INFO, "cannot find sync word\n");
return AVERROR_INVALIDDATA;
}
if (avio_r8(bc) != 0) /* version */
return AVERROR_INVALIDDATA;
- flags = avio_r8(bc);
- gp = avio_rl64 (bc);
- serial = avio_rl32 (bc);
+ flags = avio_r8(bc);
+ gp = avio_rl64(bc);
+ serial = avio_rl32(bc);
avio_skip(bc, 8); /* seq, crc */
- nsegs = avio_r8(bc);
+ nsegs = avio_r8(bc);
- idx = ogg_find_stream (ogg, serial);
- if (idx < 0){
+ idx = ogg_find_stream(ogg, serial);
+ if (idx < 0) {
if (ogg->headers) {
int n;
for (n = 0; n < ogg->nstreams; n++) {
av_freep(&ogg->streams[n].buf);
- if (!ogg->state || ogg->state->streams[n].private != ogg->streams[n].private)
+ if (!ogg->state ||
+ ogg->state->streams[n].private != ogg->streams[n].private)
av_freep(&ogg->streams[n].private);
}
+
ogg->curidx = -1;
ogg->nstreams = 0;
+
idx = ogg_new_stream(s, serial, 0);
} else {
idx = ogg_new_stream(s, serial, 1);
os = ogg->streams + idx;
os->page_pos = avio_tell(bc) - 27;
- if(os->psize > 0)
+ if (os->psize > 0)
ogg_new_buf(ogg, idx);
ret = avio_read(bc, os->segments, nsegs);
return ret < 0 ? ret : AVERROR_EOF;
os->nsegs = nsegs;
- os->segp = 0;
+ os->segp = 0;
size = 0;
for (i = 0; i < nsegs; i++)
size += os->segments[i];
- if (flags & OGG_FLAG_CONT || os->incomplete){
- if (!os->psize){
- while (os->segp < os->nsegs){
+ if (flags & OGG_FLAG_CONT || os->incomplete) {
+ if (!os->psize) {
+ while (os->segp < os->nsegs) {
int seg = os->segments[os->segp++];
os->pstart += seg;
if (seg < 255)
}
os->sync_pos = os->page_pos;
}
- }else{
- os->psize = 0;
+ } else {
+ os->psize = 0;
os->sync_pos = os->page_pos;
}
- if (os->bufsize - os->bufpos < size){
- uint8_t *nb = av_malloc (os->bufsize *= 2);
- memcpy (nb, os->buf, os->bufpos);
- av_free (os->buf);
+ if (os->bufsize - os->bufpos < size) {
+ uint8_t *nb = av_malloc((os->bufsize *= 2) + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!nb)
+ return AVERROR(ENOMEM);
+ memcpy(nb, os->buf, os->bufpos);
+ av_free(os->buf);
os->buf = nb;
}
os->bufpos += size;
os->granule = gp;
- os->flags = flags;
+ os->flags = flags;
+ memset(os->buf + os->bufpos, 0, FF_INPUT_BUFFER_PADDING_SIZE);
if (str)
*str = idx;
int idx, i, ret;
struct ogg_stream *os;
int complete = 0;
- int segp = 0, psize = 0;
+ int segp = 0, psize = 0;
av_dlog(s, "ogg_packet: curidx=%i\n", ogg->curidx);
- do{
+ do {
idx = ogg->curidx;
- while (idx < 0){
+ while (idx < 0) {
ret = ogg_read_page(s, &idx);
if (ret < 0)
return ret;
av_dlog(s, "ogg_packet: idx=%d pstart=%d psize=%d segp=%d nsegs=%d\n",
idx, os->pstart, os->psize, os->segp, os->nsegs);
- if (!os->codec){
- if (os->header < 0){
- os->codec = ogg_find_codec (os->buf, os->bufpos);
- if (!os->codec){
+ if (!os->codec) {
+ if (os->header < 0) {
+ os->codec = ogg_find_codec(os->buf, os->bufpos);
+ if (!os->codec) {
av_log(s, AV_LOG_WARNING, "Codec not found\n");
os->header = 0;
return 0;
}
- }else{
+ } else {
return 0;
}
}
- segp = os->segp;
+ segp = os->segp;
psize = os->psize;
- while (os->segp < os->nsegs){
+ while (os->segp < os->nsegs) {
int ss = os->segments[os->segp++];
os->psize += ss;
- if (ss < 255){
+ if (ss < 255) {
complete = 1;
break;
}
}
- if (!complete && os->segp == os->nsegs){
- ogg->curidx = -1;
+ if (!complete && os->segp == os->nsegs) {
+ ogg->curidx = -1;
os->incomplete = 1;
}
- }while (!complete);
+ } while (!complete);
av_dlog(s, "ogg_packet: idx %i, frame size %i, start %i\n",
idx, os->psize, os->pstart);
if (os->granule == -1)
- av_log(s, AV_LOG_WARNING, "Page at %"PRId64" is missing granule\n", os->page_pos);
+ av_log(s, AV_LOG_WARNING,
+ "Page at %"PRId64" is missing granule\n",
+ os->page_pos);
- ogg->curidx = idx;
+ ogg->curidx = idx;
os->incomplete = 0;
if (os->header) {
- os->header = os->codec->header (s, idx);
- if (!os->header){
- os->segp = segp;
+ os->header = os->codec->header(s, idx);
+ if (!os->header) {
+ os->segp = segp;
os->psize = psize;
// We have reached the first non-header packet in this stream.
// compute the data_offset.
if (!s->data_offset)
s->data_offset = os->sync_pos;
+
for (i = 0; i < ogg->nstreams; i++) {
struct ogg_stream *cur_os = ogg->streams + i;
if (cur_os->incomplete)
s->data_offset = FFMIN(s->data_offset, cur_os->sync_pos);
}
- }else{
+ } else {
+ os->nb_header++;
os->pstart += os->psize;
- os->psize = 0;
+ os->psize = 0;
}
} else {
- os->pflags = 0;
+ os->pflags = 0;
os->pduration = 0;
if (os->codec && os->codec->packet)
- os->codec->packet (s, idx);
+ os->codec->packet(s, idx);
if (str)
*str = idx;
if (dstart)
*dsize = os->psize;
if (fpos)
*fpos = os->sync_pos;
- os->pstart += os->psize;
- os->psize = 0;
+ os->pstart += os->psize;
+ os->psize = 0;
os->sync_pos = os->page_pos;
}
static int ogg_get_headers(AVFormatContext *s)
{
struct ogg *ogg = s->priv_data;
- int ret;
+ int ret, i;
- do{
+ do {
ret = ogg_packet(s, NULL, NULL, NULL, NULL);
if (ret < 0)
return ret;
- }while (!ogg->headers);
+ } while (!ogg->headers);
+ for (i = 0; i < ogg->nstreams; i++) {
+ struct ogg_stream *os = ogg->streams + i;
+
+ if (os->codec && os->codec->nb_header &&
+ os->nb_header < os->codec->nb_header) {
+ av_log(s, AV_LOG_ERROR,
+ "Headers mismatch for stream %d\n", i);
+ return AVERROR_INVALIDDATA;
+ }
+ if (os->start_granule != OGG_NOGRANULE_VALUE)
+ os->lastpts = s->streams[i]->start_time =
+ ogg_gptopts(s, i, os->start_granule, NULL);
+ }
av_dlog(s, "found headers\n");
return 0;
int i;
int64_t size, end;
- if(!s->pb->seekable)
+ if (!s->pb->seekable)
return 0;
// already set
return 0;
size = avio_size(s->pb);
- if(size < 0)
+ if (size < 0)
return 0;
- end = size > MAX_PAGE_SIZE? size - MAX_PAGE_SIZE: 0;
+ end = size > MAX_PAGE_SIZE ? size - MAX_PAGE_SIZE : 0;
- ogg_save (s);
- avio_seek (s->pb, end, SEEK_SET);
+ ogg_save(s);
+ avio_seek(s->pb, end, SEEK_SET);
- while (!ogg_read_page (s, &i)){
+ while (!ogg_read_page(s, &i)) {
if (ogg->streams[i].granule != -1 && ogg->streams[i].granule != 0 &&
ogg->streams[i].codec) {
s->streams[i]->duration =
- ogg_gptopts (s, i, ogg->streams[i].granule, NULL);
+ ogg_gptopts(s, i, ogg->streams[i].granule, NULL);
if (s->streams[i]->start_time != AV_NOPTS_VALUE)
s->streams[i]->duration -= s->streams[i]->start_time;
}
}
- ogg_restore (s, 0);
+ ogg_restore(s, 0);
return 0;
}
-static int ogg_read_header(AVFormatContext *s, AVFormatParameters *ap)
+static int ogg_read_close(AVFormatContext *s)
+{
+ struct ogg *ogg = s->priv_data;
+ int i;
+
+ for (i = 0; i < ogg->nstreams; i++) {
+ av_free(ogg->streams[i].buf);
+ if (ogg->streams[i].codec &&
+ ogg->streams[i].codec->cleanup) {
+ ogg->streams[i].codec->cleanup(s, i);
+ }
+ av_free(ogg->streams[i].private);
+ }
+ av_free(ogg->streams);
+ return 0;
+}
+
+static int ogg_read_header(AVFormatContext *s)
{
struct ogg *ogg = s->priv_data;
int ret, i;
ogg->curidx = -1;
//linear headers seek from start
ret = ogg_get_headers(s);
- if (ret < 0)
+ if (ret < 0) {
+ ogg_read_close(s);
return ret;
+ }
for (i = 0; i < ogg->nstreams; i++)
if (ogg->streams[i].header < 0)
ogg->streams[i].codec = NULL;
//linear granulepos seek from end
- ogg_get_length (s);
+ ogg_get_length(s);
//fill the extradata in the per codec callbacks
return 0;
static int64_t ogg_calc_pts(AVFormatContext *s, int idx, int64_t *dts)
{
- struct ogg *ogg = s->priv_data;
+ struct ogg *ogg = s->priv_data;
struct ogg_stream *os = ogg->streams + idx;
- int64_t pts = AV_NOPTS_VALUE;
+ int64_t pts = AV_NOPTS_VALUE;
if (dts)
*dts = AV_NOPTS_VALUE;
if (os->lastpts != AV_NOPTS_VALUE) {
- pts = os->lastpts;
+ pts = os->lastpts;
os->lastpts = AV_NOPTS_VALUE;
}
if (os->lastdts != AV_NOPTS_VALUE) {
//Get an ogg packet
retry:
- do{
+ do {
ret = ogg_packet(s, &idx, &pstart, &psize, &fpos);
if (ret < 0)
return ret;
- }while (idx < 0 || !s->streams[idx]);
+ } while (idx < 0 || !s->streams[idx]);
ogg = s->priv_data;
- os = ogg->streams + idx;
+ os = ogg->streams + idx;
// pflags might not be set until after this
pts = ogg_calc_pts(s, idx, &dts);
if (ret < 0)
return ret;
pkt->stream_index = idx;
- memcpy (pkt->data, os->buf + pstart, psize);
+ memcpy(pkt->data, os->buf + pstart, psize);
- pkt->pts = pts;
- pkt->dts = dts;
- pkt->flags = os->pflags;
+ pkt->pts = pts;
+ pkt->dts = dts;
+ pkt->flags = os->pflags;
pkt->duration = os->pduration;
- pkt->pos = fpos;
+ pkt->pos = fpos;
return psize;
}
-static int ogg_read_close(AVFormatContext *s)
-{
- struct ogg *ogg = s->priv_data;
- int i;
-
- for (i = 0; i < ogg->nstreams; i++){
- av_free (ogg->streams[i].buf);
- av_free (ogg->streams[i].private);
- }
- av_free (ogg->streams);
- return 0;
-}
-
static int64_t ogg_read_timestamp(AVFormatContext *s, int stream_index,
int64_t *pos_arg, int64_t pos_limit)
{
struct ogg *ogg = s->priv_data;
AVIOContext *bc = s->pb;
- int64_t pts = AV_NOPTS_VALUE;
- int i = -1;
+ int64_t pts = AV_NOPTS_VALUE;
+ int i = -1;
avio_seek(bc, *pos_arg, SEEK_SET);
ogg_reset(ogg);
- while (avio_tell(bc) < pos_limit && !ogg_packet(s, &i, NULL, NULL, pos_arg)) {
+ while (avio_tell(bc) < pos_limit &&
+ !ogg_packet(s, &i, NULL, NULL, pos_arg)) {
if (i == stream_index) {
struct ogg_stream *os = ogg->streams + stream_index;
pts = ogg_calc_pts(s, i, NULL);
static int ogg_read_seek(AVFormatContext *s, int stream_index,
int64_t timestamp, int flags)
{
- struct ogg *ogg = s->priv_data;
+ struct ogg *ogg = s->priv_data;
struct ogg_stream *os = ogg->streams + stream_index;
int ret;
&& !(flags & AVSEEK_FLAG_ANY))
os->keyframe_seek = 1;
- ret = av_seek_frame_binary(s, stream_index, timestamp, flags);
- os = ogg->streams + stream_index;
+ ret = ff_seek_frame_binary(s, stream_index, timestamp, flags);
+ os = ogg->streams + stream_index;
if (ret < 0)
os->keyframe_seek = 0;
return ret;
projects / ffmpeg / blobdiff