* AVI decoder.
* Copyright (c) 2001 Fabrice Bellard.
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
#include "avi.h"
#include "dv.h"
+#include "riff.h"
#undef NDEBUG
#include <assert.h>
int scale;
int rate;
int sample_size; /* size of one sample (or packet) (in the rate/scale sense) in bytes */
- int start;
int64_t cum_len; /* temporary storage (used during seek) */
AVIStream *ast;
int i;
int64_t last_pos= -1;
+ int64_t filesize= url_fsize(&s->pb);
-// av_log(s, AV_LOG_ERROR, "longs_pre_entry:%d index_type:%d entries_in_use:%d chunk_id:%X base:%Ld\n",
-// longs_pre_entry,index_type, entries_in_use, chunk_id, base);
+#ifdef DEBUG_SEEK
+ av_log(s, AV_LOG_ERROR, "longs_pre_entry:%d index_type:%d entries_in_use:%d chunk_id:%X base:%16LX\n",
+ longs_pre_entry,index_type, entries_in_use, chunk_id, base);
+#endif
if(stream_id > s->nb_streams || stream_id < 0)
return -1;
if(index_type>1)
return -1;
+ if(filesize > 0 && base >= filesize){
+ av_log(s, AV_LOG_ERROR, "ODML index invalid\n");
+ if(base>>32 == (base & 0xFFFFFFFF) && (base & 0xFFFFFFFF) < filesize && filesize <= 0xFFFFFFFF)
+ base &= 0xFFFFFFFF;
+ else
+ return -1;
+ }
+
for(i=0; i<entries_in_use; i++){
if(index_type){
int64_t pos= get_le32(pb) + base - 8;
int key= len >= 0;
len &= 0x7FFFFFFF;
-//av_log(s, AV_LOG_ERROR, "pos:%Ld, len:%X\n", pos, len);
+#ifdef DEBUG_SEEK
+ av_log(s, AV_LOG_ERROR, "pos:%Ld, len:%X\n", pos, len);
+#endif
if(last_pos == pos || pos == base - 8)
avi->non_interleaved= 1;
else
ast->cum_len ++;
last_pos= pos;
}else{
- int64_t offset= get_le64(pb);
- int size = get_le32(pb);
- int duration = get_le32(pb);
- int64_t pos= url_ftell(pb);
+ int64_t offset, pos;
+ int duration;
+ offset = get_le64(pb);
+ get_le32(pb); /* size */
+ duration = get_le32(pb);
+ pos = url_ftell(pb);
url_fseek(pb, offset+8, SEEK_SET);
read_braindead_odml_indx(s, frame_num);
url_fseek(pb, pos, SEEK_SET);
}
}
+ avi->index_loaded=1;
return 0;
}
static void clean_index(AVFormatContext *s){
- int i, j;
+ int i;
+ int64_t j;
for(i=0; i<s->nb_streams; i++){
AVStream *st = s->streams[i];
}
}
+static int avi_read_tag(ByteIOContext *pb, char *buf, int maxlen, unsigned int size)
+{
+ offset_t i = url_ftell(pb);
+ size += (size & 1);
+ get_strz(pb, buf, maxlen);
+ url_fseek(pb, i+size, SEEK_SET);
+ return 0;
+}
+
static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
AVIContext *avi = s->priv_data;
unsigned int size, nb_frames;
int i, n;
AVStream *st;
- AVIStream *ast;
+ AVIStream *ast = NULL;
int xan_video = 0; /* hack to support Xan A/V */
+ char str_track[4];
avi->stream_index= -1;
#endif
if (tag1 == MKTAG('m', 'o', 'v', 'i')) {
avi->movi_list = url_ftell(pb) - 4;
- if(size) avi->movi_end = avi->movi_list + size;
+ if(size) avi->movi_end = avi->movi_list + size + (size & 1);
else avi->movi_end = url_fsize(pb);
#ifdef DEBUG
printf("movi end=%Lx\n", avi->movi_end);
if (stream_index >= s->nb_streams) {
url_fskip(pb, size - 8);
+ /* ignore padding stream */
+ if (tag1 == MKTAG('p', 'a', 'd', 's'))
+ stream_index--;
break;
}
st = s->streams[stream_index];
}
av_set_pts_info(st, 64, ast->scale, ast->rate);
- ast->start= get_le32(pb); /* start */
+ ast->cum_len=get_le32(pb); /* start */
nb_frames = get_le32(pb);
st->start_time = 0;
av_log(s, AV_LOG_ERROR, "unknown stream type %X\n", tag1);
goto fail;
}
+ ast->frame_offset= ast->cum_len * FFMAX(ast->sample_size, 1);
url_fskip(pb, size - 12 * 4);
break;
case MKTAG('s', 't', 'r', 'f'):
break;
case CODEC_TYPE_AUDIO:
get_wav_header(pb, st->codec, size);
+ if(ast->sample_size && st->codec->block_align && ast->sample_size % st->codec->block_align)
+ av_log(s, AV_LOG_DEBUG, "invalid sample size or block align detected\n");
if (size%2) /* 2-aligned (fix for Stargate SG-1 - 3x18 - Shades of Grey.avi) */
url_fskip(pb, 1);
/* special case time: To support Xan DPCM, hardcode
break;
case MKTAG('i', 'n', 'd', 'x'):
i= url_ftell(pb);
- read_braindead_odml_indx(s, 0);
- avi->index_loaded=1;
+ if(!url_is_streamed(pb) && !(s->flags & AVFMT_FLAG_IGNIDX)){
+ read_braindead_odml_indx(s, 0);
+ }
url_fseek(pb, i+size, SEEK_SET);
break;
+ case MKTAG('I', 'N', 'A', 'M'):
+ avi_read_tag(pb, s->title, sizeof(s->title), size);
+ break;
+ case MKTAG('I', 'A', 'R', 'T'):
+ avi_read_tag(pb, s->author, sizeof(s->author), size);
+ break;
+ case MKTAG('I', 'C', 'O', 'P'):
+ avi_read_tag(pb, s->copyright, sizeof(s->copyright), size);
+ break;
+ case MKTAG('I', 'C', 'M', 'T'):
+ avi_read_tag(pb, s->comment, sizeof(s->comment), size);
+ break;
+ case MKTAG('I', 'G', 'N', 'R'):
+ avi_read_tag(pb, s->genre, sizeof(s->genre), size);
+ break;
+ case MKTAG('I', 'P', 'R', 'D'):
+ avi_read_tag(pb, s->album, sizeof(s->album), size);
+ break;
+ case MKTAG('I', 'P', 'R', 'T'):
+ avi_read_tag(pb, str_track, sizeof(str_track), size);
+ sscanf(str_track, "%d", &s->track);
+ break;
default:
/* skip tag */
size += (size & 1);
return -1;
}
- if(!avi->index_loaded)
+ if(!avi->index_loaded && !url_is_streamed(pb))
avi_load_index(s);
avi->index_loaded = 1;
avi->non_interleaved |= guess_ni_flag(s);
AVIStream *ast= st->priv_data;
int size;
- if(ast->sample_size == 0)
+ if(ast->sample_size <= 1) // minorityreport.AVI block_align=1024 sample_size=1 IMA-ADPCM
size= INT_MAX;
else if(ast->sample_size < 32)
size= 64*ast->sample_size;
ast = st->priv_data;
#if defined(DEBUG_SEEK)
- av_log(NULL, AV_LOG_DEBUG, "%d cum_len=%d\n", len, ast->cum_len);
+ av_log(NULL, AV_LOG_DEBUG, "%d cum_len=%Ld\n", len, ast->cum_len);
#endif
if(last_pos == pos)
avi->non_interleaved= 1;
if (st2->nb_index_entries <= 0)
continue;
-// assert(st2->codec.block_align);
+// assert(st2->codec->block_align);
assert(st2->time_base.den == ast2->rate);
assert(st2->time_base.num == ast2->scale);
index = av_index_search_timestamp(
AVStream *st = s->streams[i];
AVIStream *ast = st->priv_data;
av_free(ast);
- av_free(st->codec->extradata);
av_free(st->codec->palctrl);
}
return 0;
}
-static AVInputFormat avi_iformat = {
+AVInputFormat avi_demuxer = {
"avi",
"avi format",
sizeof(AVIContext),
avi_read_close,
avi_read_seek,
};
-
-int avidec_init(void)
-{
- av_register_input_format(&avi_iformat);
- return 0;
-}
projects / ffmpeg / blobdiff