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-rw-r--r--contrib/ffmpeg/libavformat/ogg2.c700
1 files changed, 0 insertions, 700 deletions
diff --git a/contrib/ffmpeg/libavformat/ogg2.c b/contrib/ffmpeg/libavformat/ogg2.c
deleted file mode 100644
index 8ca7b2d13..000000000
--- a/contrib/ffmpeg/libavformat/ogg2.c
+++ /dev/null
@@ -1,700 +0,0 @@
-/*
- * 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
- obtaining a copy of this software and associated documentation
- files (the "Software"), to deal in the Software without
- restriction, including without limitation the rights to use, copy,
- modify, merge, publish, distribute, sublicense, and/or sell copies
- of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
-
- The above copyright notice and this permission notice shall be
- included in all copies or substantial portions of the Software.
-
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
- HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- 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 "ogg2.h"
-#include "avformat.h"
-
-#define MAX_PAGE_SIZE 65307
-#define DECODER_BUFFER_SIZE MAX_PAGE_SIZE
-
-static ogg_codec_t *ogg_codecs[] = {
- &vorbis_codec,
- &theora_codec,
- &flac_codec,
- &ogm_video_codec,
- &ogm_audio_codec,
- &ogm_old_codec,
- NULL
-};
-
-#if 0 // CONFIG_MUXERS
-static int
-ogg_write_header (AVFormatContext * avfcontext)
-{
-}
-
-static int
-ogg_write_packet (AVFormatContext * avfcontext, AVPacket * pkt)
-{
-}
-
-
-static int
-ogg_write_trailer (AVFormatContext * avfcontext)
-{
-}
-
-
-AVOutputFormat ogg_muxer = {
- "ogg",
- "Ogg format",
- "application/ogg",
- "ogg",
- sizeof (OggContext),
- CODEC_ID_VORBIS,
- 0,
- ogg_write_header,
- ogg_write_packet,
- ogg_write_trailer,
-};
-#endif //CONFIG_MUXERS
-
-//FIXME We could avoid some structure duplication
-static int
-ogg_save (AVFormatContext * s)
-{
- ogg_t *ogg = s->priv_data;
- ogg_state_t *ost =
- av_malloc(sizeof (*ost) + (ogg->nstreams-1) * sizeof (*ogg->streams));
- int i;
- ost->pos = url_ftell (&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++){
- ogg_stream_t *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);
- }
-
- ogg->state = ost;
-
- return 0;
-}
-
-static int
-ogg_restore (AVFormatContext * s, int discard)
-{
- ogg_t *ogg = s->priv_data;
- ByteIOContext *bc = &s->pb;
- ogg_state_t *ost = ogg->state;
- int i;
-
- if (!ost)
- return 0;
-
- ogg->state = ost->next;
-
- if (!discard){
- for (i = 0; i < ogg->nstreams; i++)
- av_free (ogg->streams[i].buf);
-
- url_fseek (bc, ost->pos, SEEK_SET);
- ogg->curidx = ost->curidx;
- ogg->nstreams = ost->nstreams;
- memcpy(ogg->streams, ost->streams,
- ost->nstreams * sizeof(*ogg->streams));
- }
-
- av_free (ost);
-
- return 0;
-}
-
-static int
-ogg_reset (ogg_t * ogg)
-{
- int i;
-
- for (i = 0; i < ogg->nstreams; i++){
- ogg_stream_t *os = ogg->streams + i;
- os->bufpos = 0;
- os->pstart = 0;
- os->psize = 0;
- os->granule = -1;
- os->lastgp = -1;
- os->nsegs = 0;
- os->segp = 0;
- }
-
- ogg->curidx = -1;
-
- return 0;
-}
-
-static ogg_codec_t *
-ogg_find_codec (uint8_t * buf, int size)
-{
- int i;
-
- for (i = 0; ogg_codecs[i]; i++)
- if (size >= ogg_codecs[i]->magicsize &&
- !memcmp (buf, ogg_codecs[i]->magic, ogg_codecs[i]->magicsize))
- return ogg_codecs[i];
-
- return NULL;
-}
-
-static int
-ogg_find_stream (ogg_t * ogg, int serial)
-{
- int i;
-
- for (i = 0; i < ogg->nstreams; i++)
- if (ogg->streams[i].serial == serial)
- return i;
-
- return -1;
-}
-
-static int
-ogg_new_stream (AVFormatContext * s, uint32_t serial)
-{
-
- ogg_t *ogg = s->priv_data;
- int idx = ogg->nstreams++;
- AVStream *st;
- ogg_stream_t *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;
-
- st = av_new_stream (s, idx);
- if (!st)
- return AVERROR_NOMEM;
-
- av_set_pts_info(st, 64, 1, 1000000);
-
- return idx;
-}
-
-static int
-ogg_new_buf(ogg_t *ogg, int idx)
-{
- ogg_stream_t *os = ogg->streams + idx;
- uint8_t *nb = av_malloc(os->bufsize);
- int size = os->bufpos - os->pstart;
- if(os->buf){
- memcpy(nb, os->buf + os->pstart, size);
- av_free(os->buf);
- }
- os->buf = nb;
- os->bufpos = size;
- os->pstart = 0;
-
- return 0;
-}
-
-static int
-ogg_read_page (AVFormatContext * s, int *str)
-{
- ByteIOContext *bc = &s->pb;
- ogg_t *ogg = s->priv_data;
- ogg_stream_t *os;
- int i = 0;
- int flags, nsegs;
- uint64_t gp;
- uint32_t serial;
- uint32_t seq;
- uint32_t crc;
- int size, idx;
- uint8_t sync[4];
- int sp = 0;
-
- if (get_buffer (bc, sync, 4) < 4)
- return -1;
-
- do{
- int c;
-
- if (sync[sp & 3] == 'O' &&
- sync[(sp + 1) & 3] == 'g' &&
- sync[(sp + 2) & 3] == 'g' && sync[(sp + 3) & 3] == 'S')
- break;
-
- c = url_fgetc (bc);
- if (c < 0)
- return -1;
- sync[sp++ & 3] = c;
- }while (i++ < MAX_PAGE_SIZE);
-
- if (i >= MAX_PAGE_SIZE){
- av_log (s, AV_LOG_INFO, "ogg, can't find sync word\n");
- return -1;
- }
-
- if (url_fgetc (bc) != 0) /* version */
- return -1;
-
- flags = url_fgetc (bc);
- gp = get_le64 (bc);
- serial = get_le32 (bc);
- seq = get_le32 (bc);
- crc = get_le32 (bc);
- nsegs = url_fgetc (bc);
-
- idx = ogg_find_stream (ogg, serial);
- if (idx < 0){
- idx = ogg_new_stream (s, serial);
- if (idx < 0)
- return -1;
- }
-
- os = ogg->streams + idx;
-
- if(os->psize > 0)
- ogg_new_buf(ogg, idx);
-
- if (get_buffer (bc, os->segments, nsegs) < nsegs)
- return -1;
-
- os->nsegs = nsegs;
- os->segp = 0;
-
- size = 0;
- for (i = 0; i < nsegs; i++)
- size += os->segments[i];
-
- if (flags & OGG_FLAG_CONT){
- if (!os->psize){
- while (os->segp < os->nsegs){
- int seg = os->segments[os->segp++];
- os->pstart += seg;
- if (seg < 255)
- break;
- }
- }
- }else{
- os->psize = 0;
- }
-
- if (os->bufsize - os->bufpos < size){
- uint8_t *nb = av_malloc (os->bufsize *= 2);
- memcpy (nb, os->buf, os->bufpos);
- av_free (os->buf);
- os->buf = nb;
- }
-
- if (get_buffer (bc, os->buf + os->bufpos, size) < size)
- return -1;
-
- os->lastgp = os->granule;
- os->bufpos += size;
- os->granule = gp;
- os->flags = flags;
-
- if (str)
- *str = idx;
-
- return 0;
-}
-
-static int
-ogg_packet (AVFormatContext * s, int *str, int *dstart, int *dsize)
-{
- ogg_t *ogg = s->priv_data;
- int idx;
- ogg_stream_t *os;
- int complete = 0;
- int segp = 0, psize = 0;
-
-#if 0
- av_log (s, AV_LOG_DEBUG, "ogg_packet: curidx=%i\n", ogg->curidx);
-#endif
-
- do{
- idx = ogg->curidx;
-
- while (idx < 0){
- if (ogg_read_page (s, &idx) < 0)
- return -1;
- }
-
- os = ogg->streams + idx;
-
-#if 0
- av_log (s, AV_LOG_DEBUG,
- "ogg_packet: idx=%d pstart=%d psize=%d segp=%d nsegs=%d\n",
- idx, os->pstart, os->psize, os->segp, os->nsegs);
-#endif
-
- if (!os->codec){
- if (os->header < 0){
- os->codec = ogg_find_codec (os->buf, os->bufpos);
- if (!os->codec){
- os->header = 0;
- return 0;
- }
- }else{
- return 0;
- }
- }
-
- segp = os->segp;
- psize = os->psize;
-
- while (os->segp < os->nsegs){
- int ss = os->segments[os->segp++];
- os->psize += ss;
- if (ss < 255){
- complete = 1;
- break;
- }
- }
-
- if (!complete && os->segp == os->nsegs){
- ogg->curidx = -1;
- }
- }while (!complete);
-
-#if 0
- av_log (s, AV_LOG_DEBUG,
- "ogg_packet: idx %i, frame size %i, start %i\n",
- idx, os->psize, os->pstart);
-#endif
-
- ogg->curidx = idx;
-
- if (os->header < 0){
- int hdr = os->codec->header (s, idx);
- if (!hdr){
- os->header = os->seq;
- os->segp = segp;
- os->psize = psize;
- ogg->headers = 1;
- }else{
- os->pstart += os->psize;
- os->psize = 0;
- }
- }
-
- if (os->header > -1 && os->seq > os->header){
- if (os->codec && os->codec->packet)
- os->codec->packet (s, idx);
- if (str)
- *str = idx;
- if (dstart)
- *dstart = os->pstart;
- if (dsize)
- *dsize = os->psize;
- os->pstart += os->psize;
- os->psize = 0;
- }
-
- os->seq++;
- if (os->segp == os->nsegs)
- ogg->curidx = -1;
-
- return 0;
-}
-
-static int
-ogg_get_headers (AVFormatContext * s)
-{
- ogg_t *ogg = s->priv_data;
-
- do{
- if (ogg_packet (s, NULL, NULL, NULL) < 0)
- return -1;
- }while (!ogg->headers);
-
-#if 0
- av_log (s, AV_LOG_DEBUG, "found headers\n");
-#endif
-
- return 0;
-}
-
-static uint64_t
-ogg_gptopts (AVFormatContext * s, int i, uint64_t gp)
-{
- ogg_t *ogg = s->priv_data;
- ogg_stream_t *os = ogg->streams + i;
- uint64_t pts = AV_NOPTS_VALUE;
-
- if(os->codec->gptopts){
- pts = os->codec->gptopts(s, i, gp);
- } else {
- pts = gp;
- }
-
- return pts;
-}
-
-
-static int
-ogg_get_length (AVFormatContext * s)
-{
- ogg_t *ogg = s->priv_data;
- int idx = -1, i;
- offset_t size, end;
-
- if(s->pb.is_streamed)
- return 0;
-
-// already set
- if (s->duration != AV_NOPTS_VALUE)
- return 0;
-
- size = url_fsize(&s->pb);
- if(size < 0)
- return 0;
- end = size > MAX_PAGE_SIZE? size - MAX_PAGE_SIZE: size;
-
- ogg_save (s);
- url_fseek (&s->pb, end, SEEK_SET);
-
- while (!ogg_read_page (s, &i)){
- if (ogg->streams[i].granule != -1 && ogg->streams[i].granule != 0 &&
- ogg->streams[i].codec)
- idx = i;
- }
-
- if (idx != -1){
- s->streams[idx]->duration =
- ogg_gptopts (s, idx, ogg->streams[idx].granule);
- }
-
- ogg->size = size;
- ogg_restore (s, 0);
- ogg_save (s);
- while (!ogg_read_page (s, &i)) {
- if (i == idx && ogg->streams[i].granule != -1 && ogg->streams[i].granule != 0)
- break;
- }
- if (i == idx) {
- s->streams[idx]->start_time = ogg_gptopts (s, idx, ogg->streams[idx].granule);
- s->streams[idx]->duration -= s->streams[idx]->start_time;
- }
- ogg_restore (s, 0);
-
- return 0;
-}
-
-
-static int
-ogg_read_header (AVFormatContext * s, AVFormatParameters * ap)
-{
- ogg_t *ogg = s->priv_data;
- ogg->curidx = -1;
- //linear headers seek from start
- if (ogg_get_headers (s) < 0){
- return -1;
- }
-
- //linear granulepos seek from end
- ogg_get_length (s);
-
- //fill the extradata in the per codec callbacks
- return 0;
-}
-
-
-static int
-ogg_read_packet (AVFormatContext * s, AVPacket * pkt)
-{
- ogg_t *ogg;
- ogg_stream_t *os;
- int idx = -1;
- int pstart, psize;
-
- //Get an ogg packet
- do{
- if (ogg_packet (s, &idx, &pstart, &psize) < 0)
- return AVERROR_IO;
- }while (idx < 0 || !s->streams[idx]);
-
- ogg = s->priv_data;
- os = ogg->streams + idx;
-
- //Alloc a pkt
- if (av_new_packet (pkt, psize) < 0)
- return AVERROR_IO;
- pkt->stream_index = idx;
- memcpy (pkt->data, os->buf + pstart, psize);
- if (os->lastgp != -1LL){
- pkt->pts = ogg_gptopts (s, idx, os->lastgp);
- os->lastgp = -1;
- }
-
- return psize;
-}
-
-
-static int
-ogg_read_close (AVFormatContext * s)
-{
- ogg_t *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 int
-ogg_read_seek (AVFormatContext * s, int stream_index, int64_t target_ts,
- int flags)
-{
- AVStream *st = s->streams[stream_index];
- ogg_t *ogg = s->priv_data;
- ByteIOContext *bc = &s->pb;
- uint64_t min = 0, max = ogg->size;
- uint64_t tmin = st->start_time, tmax = st->start_time + st->duration;
- int64_t pts = AV_NOPTS_VALUE;
-
- ogg_save (s);
-
- if ((uint64_t)target_ts < tmin || target_ts < 0)
- target_ts = tmin;
- while (min <= max && tmin < tmax){
- uint64_t p = min + (max - min) * (target_ts - tmin) / (tmax - tmin);
- int i = -1;
-
- url_fseek (bc, p, SEEK_SET);
-
- while (!ogg_read_page (s, &i)){
- if (i == stream_index && ogg->streams[i].granule != 0 &&
- ogg->streams[i].granule != -1)
- break;
- }
-
- if (i == -1)
- break;
-
- pts = ogg_gptopts (s, i, ogg->streams[i].granule);
- p = url_ftell (bc);
-
- if (FFABS (pts - target_ts) * st->time_base.num < st->time_base.den)
- break;
-
- if (pts > target_ts){
- if (max == p && tmax == pts) {
- // probably our tmin is wrong, causing us to always end up too late in the file
- tmin = (target_ts + tmin + 1) / 2;
- if (tmin == target_ts) {
- url_fseek(bc, min, SEEK_SET);
- break;
- }
- }
- max = p;
- tmax = pts;
- }else{
- if (min == p && tmin == pts) {
- // probably our tmax is wrong, causing us to always end up too early in the file
- tmax = (target_ts + tmax) / 2;
- if (tmax == target_ts) {
- url_fseek(bc, max, SEEK_SET);
- break;
- }
- }
- min = p;
- tmin = pts;
- }
- }
-
- if (FFABS (pts - target_ts) * st->time_base.num < st->time_base.den){
- ogg_restore (s, 1);
- ogg_reset (ogg);
- }else{
- ogg_restore (s, 0);
- pts = AV_NOPTS_VALUE;
- }
-
- av_update_cur_dts(s, st, pts);
- return 0;
-
-#if 0
- //later...
- int64_t pos;
- if (av_seek_frame_binary (s, stream_index, target_ts, flags) < 0)
- return -1;
- pos = url_ftell (&s->pb);
- ogg_read_timestamp (s, stream_index, &pos, pos - 1);
-#endif
-
-}
-
-#if 0
-static int64_t
-ogg_read_timestamp (AVFormatContext * s, int stream_index, int64_t * pos_arg,
- int64_t pos_limit)
-{
- ogg_t *ogg = s->priv_data;
- ByteIOContext *bc = &s->pb;
- int64_t pos, pts;
-
- if (*pos_arg < 0)
- return AV_NOPTS_VALUE;
-
- pos = *pos_arg;
-}
-#endif
-
-static int ogg_probe(AVProbeData *p)
-{
- if (p->buf_size < 6)
- return 0;
- if (p->buf[0] == 'O' && p->buf[1] == 'g' &&
- p->buf[2] == 'g' && p->buf[3] == 'S' &&
- p->buf[4] == 0x0 && p->buf[5] <= 0x7 )
- return AVPROBE_SCORE_MAX;
- else
- return 0;
-}
-
-AVInputFormat ogg_demuxer = {
- "ogg",
- "Ogg",
- sizeof (ogg_t),
- ogg_probe,
- ogg_read_header,
- ogg_read_packet,
- ogg_read_close,
- ogg_read_seek,
-// ogg_read_timestamp,
- .extensions = "ogg",
-};
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