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Diffstat (limited to 'ffmpeg/libavformat/oggparsetheora.c')
-rw-r--r--ffmpeg/libavformat/oggparsetheora.c138
1 files changed, 73 insertions, 65 deletions
diff --git a/ffmpeg/libavformat/oggparsetheora.c b/ffmpeg/libavformat/oggparsetheora.c
index 6877d1e..59df17e 100644
--- a/ffmpeg/libavformat/oggparsetheora.c
+++ b/ffmpeg/libavformat/oggparsetheora.c
@@ -1,26 +1,26 @@
/**
- 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.
-**/
+ * 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"
@@ -29,64 +29,67 @@
#include "internal.h"
#include "oggdec.h"
-struct theora_params {
+typedef struct TheoraParams {
int gpshift;
int gpmask;
unsigned version;
-};
+} TheoraParams;
-static int
-theora_header (AVFormatContext * s, int idx)
+static int theora_header(AVFormatContext *s, int idx)
{
- struct ogg *ogg = s->priv_data;
+ 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;
+ AVStream *st = s->streams[idx];
+ TheoraParams *thp = os->private;
+ int cds = st->codec->extradata_size + os->psize + 2;
+ int err;
uint8_t *cdp;
- if(!(os->buf[os->pstart] & 0x80))
+ if (!(os->buf[os->pstart] & 0x80))
return 0;
- if(!thp){
+ if (!thp) {
thp = av_mallocz(sizeof(*thp));
+ if (!thp)
+ return AVERROR(ENOMEM);
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);
+ init_get_bits(&gb, os->buf + os->pstart, os->psize * 8);
- skip_bits_long(&gb, 7*8); /* 0x80"theora" */
+ /* 0x80"theora" */
+ skip_bits_long(&gb, 7 * 8);
thp->version = get_bits_long(&gb, 24);
- if (thp->version < 0x030100)
- {
+ if (thp->version < 0x030100) {
av_log(s, AV_LOG_ERROR,
- "Too old or unsupported Theora (%x)\n", thp->version);
- return -1;
+ "Too old or unsupported Theora (%x)\n", thp->version);
+ return AVERROR(ENOSYS);
}
- width = get_bits(&gb, 16) << 4;
- height = get_bits(&gb, 16) << 4;
- avcodec_set_dimensions(st->codec, width, height);
+ st->codec->width = get_bits(&gb, 16) << 4;
+ st->codec->height = get_bits(&gb, 16) << 4;
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);
+ int width = get_bits_long(&gb, 24);
+ int 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) {
+ st->codec->width = width;
+ st->codec->height = 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)) {
@@ -105,41 +108,46 @@ theora_header (AVFormatContext * s, int idx)
skip_bits(&gb, 2);
thp->gpshift = get_bits(&gb, 5);
- thp->gpmask = (1 << thp->gpshift) - 1;
+ 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;
+ 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;
+ return AVERROR_INVALIDDATA;
break;
default:
av_log(s, AV_LOG_ERROR, "Unknown header type %X\n", os->buf[os->pstart]);
- return -1;
+ return AVERROR_INVALIDDATA;
+ }
+
+ if ((err = av_reallocp(&st->codec->extradata,
+ cds + FF_INPUT_BUFFER_PADDING_SIZE)) < 0) {
+ st->codec->extradata_size = 0;
+ return err;
}
+ memset(st->codec->extradata + cds, 0, FF_INPUT_BUFFER_PADDING_SIZE);
- st->codec->extradata = av_realloc (st->codec->extradata,
- cds + FF_INPUT_BUFFER_PADDING_SIZE);
- cdp = st->codec->extradata + st->codec->extradata_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);
+ 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)
+static uint64_t theora_gptopts(AVFormatContext *ctx, int idx, uint64_t gp,
+ int64_t *dts)
{
- struct ogg *ogg = ctx->priv_data;
+ struct ogg *ogg = ctx->priv_data;
struct ogg_stream *os = ogg->streams + idx;
- struct theora_params *thp = os->private;
+ TheoraParams *thp = os->private;
uint64_t iframe, pframe;
if (!thp)
@@ -151,7 +159,7 @@ theora_gptopts(AVFormatContext *ctx, int idx, uint64_t gp, int64_t *dts)
if (thp->version < 0x030201)
iframe++;
- if(!pframe)
+ if (!pframe)
os->pflags |= AV_PKT_FLAG_KEY;
if (dts)
@@ -197,10 +205,10 @@ static int theora_packet(AVFormatContext *s, int idx)
}
const struct ogg_codec ff_theora_codec = {
- .magic = "\200theora",
+ .magic = "\200theora",
.magicsize = 7,
- .header = theora_header,
- .packet = theora_packet,
- .gptopts = theora_gptopts,
+ .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 14:49:51 +0000