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Diffstat (limited to 'ffmpeg1/libavformat/oggparsetheora.c')
-rw-r--r--ffmpeg1/libavformat/oggparsetheora.c206
1 files changed, 0 insertions, 206 deletions
diff --git a/ffmpeg1/libavformat/oggparsetheora.c b/ffmpeg1/libavformat/oggparsetheora.c
deleted file mode 100644
index 6877d1e..0000000
--- a/ffmpeg1/libavformat/oggparsetheora.c
+++ /dev/null
@@ -1,206 +0,0 @@
-/**
- Copyright (C) 2005 Matthieu CASTET, Alex Beregszaszi
-
- 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 <stdlib.h>
-#include "libavutil/bswap.h"
-#include "libavcodec/get_bits.h"
-#include "avformat.h"
-#include "internal.h"
-#include "oggdec.h"
-
-struct theora_params {
- int gpshift;
- int gpmask;
- unsigned version;
-};
-
-static int
-theora_header (AVFormatContext * s, int idx)
-{
- struct ogg *ogg = s->priv_data;
- struct ogg_stream *os = ogg->streams + idx;
- AVStream *st = s->streams[idx];
- struct theora_params *thp = os->private;
- int cds = st->codec->extradata_size + os->psize + 2;
- uint8_t *cdp;
-
- if(!(os->buf[os->pstart] & 0x80))
- return 0;
-
- if(!thp){
- thp = av_mallocz(sizeof(*thp));
- os->private = thp;
- }
-
- switch (os->buf[os->pstart]) {
- case 0x80: {
- GetBitContext gb;
- int width, height;
- AVRational timebase;
-
- init_get_bits(&gb, os->buf + os->pstart, os->psize*8);
-
- skip_bits_long(&gb, 7*8); /* 0x80"theora" */
-
- thp->version = get_bits_long(&gb, 24);
- if (thp->version < 0x030100)
- {
- av_log(s, AV_LOG_ERROR,
- "Too old or unsupported Theora (%x)\n", thp->version);
- return -1;
- }
-
- width = get_bits(&gb, 16) << 4;
- height = get_bits(&gb, 16) << 4;
- avcodec_set_dimensions(st->codec, width, height);
-
- if (thp->version >= 0x030400)
- skip_bits(&gb, 100);
-
- if (thp->version >= 0x030200) {
- width = get_bits_long(&gb, 24);
- height = get_bits_long(&gb, 24);
- if ( width <= st->codec->width && width > st->codec->width-16
- && height <= st->codec->height && height > st->codec->height-16)
- avcodec_set_dimensions(st->codec, width, height);
-
- skip_bits(&gb, 16);
- }
- timebase.den = get_bits_long(&gb, 32);
- timebase.num = get_bits_long(&gb, 32);
- if (!(timebase.num > 0 && timebase.den > 0)) {
- av_log(s, AV_LOG_WARNING, "Invalid time base in theora stream, assuming 25 FPS\n");
- timebase.num = 1;
- timebase.den = 25;
- }
- avpriv_set_pts_info(st, 64, timebase.num, timebase.den);
-
- st->sample_aspect_ratio.num = get_bits_long(&gb, 24);
- st->sample_aspect_ratio.den = get_bits_long(&gb, 24);
-
- if (thp->version >= 0x030200)
- skip_bits_long(&gb, 38);
- if (thp->version >= 0x304000)
- skip_bits(&gb, 2);
-
- thp->gpshift = get_bits(&gb, 5);
- thp->gpmask = (1 << thp->gpshift) - 1;
-
- st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- st->codec->codec_id = AV_CODEC_ID_THEORA;
- st->need_parsing = AVSTREAM_PARSE_HEADERS;
- }
- break;
- case 0x81:
- ff_vorbis_comment(s, &st->metadata, os->buf + os->pstart + 7, os->psize - 7);
- case 0x82:
- if (!thp->version)
- return -1;
- break;
- default:
- av_log(s, AV_LOG_ERROR, "Unknown header type %X\n", os->buf[os->pstart]);
- return -1;
- }
-
- st->codec->extradata = av_realloc (st->codec->extradata,
- cds + FF_INPUT_BUFFER_PADDING_SIZE);
- cdp = st->codec->extradata + st->codec->extradata_size;
- *cdp++ = os->psize >> 8;
- *cdp++ = os->psize & 0xff;
- memcpy (cdp, os->buf + os->pstart, os->psize);
- st->codec->extradata_size = cds;
-
- return 1;
-}
-
-static uint64_t
-theora_gptopts(AVFormatContext *ctx, int idx, uint64_t gp, int64_t *dts)
-{
- struct ogg *ogg = ctx->priv_data;
- struct ogg_stream *os = ogg->streams + idx;
- struct theora_params *thp = os->private;
- uint64_t iframe, pframe;
-
- if (!thp)
- return AV_NOPTS_VALUE;
-
- iframe = gp >> thp->gpshift;
- pframe = gp & thp->gpmask;
-
- if (thp->version < 0x030201)
- iframe++;
-
- if(!pframe)
- os->pflags |= AV_PKT_FLAG_KEY;
-
- if (dts)
- *dts = iframe + pframe;
-
- return iframe + pframe;
-}
-
-static int theora_packet(AVFormatContext *s, int idx)
-{
- struct ogg *ogg = s->priv_data;
- struct ogg_stream *os = ogg->streams + idx;
- int duration;
-
- /* first packet handling
- here we parse the duration of each packet in the first page and compare
- the total duration to the page granule to find the encoder delay and
- set the first timestamp */
-
- if ((!os->lastpts || os->lastpts == AV_NOPTS_VALUE) && !(os->flags & OGG_FLAG_EOS)) {
- int seg;
-
- duration = 1;
- for (seg = os->segp; seg < os->nsegs; seg++) {
- if (os->segments[seg] < 255)
- duration ++;
- }
-
- os->lastpts = os->lastdts = theora_gptopts(s, idx, os->granule, NULL) - duration;
- if(s->streams[idx]->start_time == AV_NOPTS_VALUE) {
- s->streams[idx]->start_time = os->lastpts;
- if (s->streams[idx]->duration)
- s->streams[idx]->duration -= s->streams[idx]->start_time;
- }
- }
-
- /* parse packet duration */
- if (os->psize > 0) {
- os->pduration = 1;
- }
-
- return 0;
-}
-
-const struct ogg_codec ff_theora_codec = {
- .magic = "\200theora",
- .magicsize = 7,
- .header = theora_header,
- .packet = theora_packet,
- .gptopts = theora_gptopts,
- .nb_header = 3,
-};
generated by cgit v1.2.3 (git 2.39.1) at 2025-12-06 16:49:21 +0000