* AVI demuxer
* Copyright (c) 2001 Fabrice Bellard
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-//#define DEBUG
-//#define DEBUG_SEEK
+#include <inttypes.h>
-#include "libavutil/intreadwrite.h"
+#include "libavutil/avstring.h"
#include "libavutil/bswap.h"
+#include "libavutil/dict.h"
+#include "libavutil/internal.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/mathematics.h"
#include "avformat.h"
#include "avi.h"
#include "dv.h"
+#include "internal.h"
+#include "isom.h"
#include "riff.h"
#undef NDEBUG
#include <assert.h>
typedef struct AVIStream {
- int64_t frame_offset; /* current frame (video) or byte (audio) counter
- (used to compute the pts) */
+ int64_t frame_offset; /* current frame (video) or byte (audio) counter
+ * (used to compute the pts) */
int remaining;
int packet_size;
- int scale;
- int rate;
- int sample_size; /* size of one sample (or packet) (in the rate/scale sense) in bytes */
+ uint32_t handler;
+ uint32_t scale;
+ uint32_t rate;
+ int sample_size; /* size of one sample (or packet)
+ * (in the rate/scale sense) in bytes */
- int64_t cum_len; /* temporary storage (used during seek) */
-
- int prefix; ///< normally 'd'<<8 + 'c' or 'w'<<8 + 'b'
+ int64_t cum_len; /* temporary storage (used during seek) */
+ int prefix; /* normally 'd'<<8 + 'c' or 'w'<<8 + 'b' */
int prefix_count;
uint32_t pal[256];
int has_pal;
+ int dshow_block_align; /* block align variable used to emulate bugs in
+ * the MS dshow demuxer */
+
+ AVFormatContext *sub_ctx;
+ AVPacket sub_pkt;
+ uint8_t *sub_buffer;
} AVIStream;
-typedef struct {
- int64_t riff_end;
- int64_t movi_end;
- int64_t fsize;
+typedef struct AVIContext {
+ int64_t riff_end;
+ int64_t movi_end;
+ int64_t fsize;
int64_t movi_list;
int64_t last_pkt_pos;
int index_loaded;
int is_odml;
int non_interleaved;
int stream_index;
- DVDemuxContext* dv_demux;
+ DVDemuxContext *dv_demux;
int odml_depth;
#define MAX_ODML_DEPTH 1000
} AVIContext;
static const char avi_headers[][8] = {
- { 'R', 'I', 'F', 'F', 'A', 'V', 'I', ' ' },
- { 'R', 'I', 'F', 'F', 'A', 'V', 'I', 'X' },
- { 'R', 'I', 'F', 'F', 'A', 'V', 'I', 0x19},
- { 'O', 'N', '2', ' ', 'O', 'N', '2', 'f' },
- { 'R', 'I', 'F', 'F', 'A', 'M', 'V', ' ' },
+ { 'R', 'I', 'F', 'F', 'A', 'V', 'I', ' ' },
+ { 'R', 'I', 'F', 'F', 'A', 'V', 'I', 'X' },
+ { 'R', 'I', 'F', 'F', 'A', 'V', 'I', 0x19 },
+ { 'O', 'N', '2', ' ', 'O', 'N', '2', 'f' },
+ { 'R', 'I', 'F', 'F', 'A', 'M', 'V', ' ' },
{ 0 }
};
+static const AVMetadataConv avi_metadata_conv[] = {
+ { "strn", "title" },
+ { 0 },
+};
+
static int avi_load_index(AVFormatContext *s);
static int guess_ni_flag(AVFormatContext *s);
-#ifdef DEBUG
-static void print_tag(const char *str, unsigned int tag, int size)
-{
- dprintf(NULL, "%s: tag=%c%c%c%c size=0x%x\n",
- str, tag & 0xff,
- (tag >> 8) & 0xff,
- (tag >> 16) & 0xff,
- (tag >> 24) & 0xff,
- size);
-}
-#endif
+#define print_tag(str, tag, size) \
+ av_log(NULL, AV_LOG_TRACE, "%s: tag=%c%c%c%c size=0x%x\n", \
+ str, tag & 0xff, \
+ (tag >> 8) & 0xff, \
+ (tag >> 16) & 0xff, \
+ (tag >> 24) & 0xff, \
+ size)
-static inline int get_duration(AVIStream *ast, int len){
- if(ast->sample_size){
+static inline int get_duration(AVIStream *ast, int len)
+{
+ if (ast->sample_size)
return len;
- }else
+ else if (ast->dshow_block_align)
+ return (len + ast->dshow_block_align - 1) / ast->dshow_block_align;
+ else
return 1;
}
-static int get_riff(AVFormatContext *s, ByteIOContext *pb)
+static int get_riff(AVFormatContext *s, AVIOContext *pb)
{
AVIContext *avi = s->priv_data;
char header[8];
int i;
/* check RIFF header */
- get_buffer(pb, header, 4);
- avi->riff_end = get_le32(pb); /* RIFF chunk size */
- avi->riff_end += url_ftell(pb); /* RIFF chunk end */
- get_buffer(pb, header+4, 4);
+ avio_read(pb, header, 4);
+ avi->riff_end = avio_rl32(pb); /* RIFF chunk size */
+ avi->riff_end += avio_tell(pb); /* RIFF chunk end */
+ avio_read(pb, header + 4, 4);
- for(i=0; avi_headers[i][0]; i++)
- if(!memcmp(header, avi_headers[i], 8))
+ for (i = 0; avi_headers[i][0]; i++)
+ if (!memcmp(header, avi_headers[i], 8))
break;
- if(!avi_headers[i][0])
- return -1;
+ if (!avi_headers[i][0])
+ return AVERROR_INVALIDDATA;
- if(header[7] == 0x19)
- av_log(s, AV_LOG_INFO, "This file has been generated by a totally broken muxer.\n");
+ if (header[7] == 0x19)
+ av_log(s, AV_LOG_INFO,
+ "This file has been generated by a totally broken muxer.\n");
return 0;
}
-static int read_braindead_odml_indx(AVFormatContext *s, int frame_num){
- AVIContext *avi = s->priv_data;
- ByteIOContext *pb = s->pb;
- int longs_pre_entry= get_le16(pb);
- int index_sub_type = get_byte(pb);
- int index_type = get_byte(pb);
- int entries_in_use = get_le32(pb);
- int chunk_id = get_le32(pb);
- int64_t base = get_le64(pb);
- int stream_id= 10*((chunk_id&0xFF) - '0') + (((chunk_id>>8)&0xFF) - '0');
+static int read_braindead_odml_indx(AVFormatContext *s, int frame_num)
+{
+ AVIContext *avi = s->priv_data;
+ AVIOContext *pb = s->pb;
+ int longs_pre_entry = avio_rl16(pb);
+ int index_sub_type = avio_r8(pb);
+ int index_type = avio_r8(pb);
+ int entries_in_use = avio_rl32(pb);
+ int chunk_id = avio_rl32(pb);
+ int64_t base = avio_rl64(pb);
+ int stream_id = ((chunk_id & 0xFF) - '0') * 10 +
+ ((chunk_id >> 8 & 0xFF) - '0');
AVStream *st;
AVIStream *ast;
int i;
- int64_t last_pos= -1;
- int64_t filesize= url_fsize(s->pb);
-
-#ifdef DEBUG_SEEK
- av_log(s, AV_LOG_ERROR, "longs_pre_entry:%d index_type:%d entries_in_use:%d chunk_id:%X base:%16"PRIX64"\n",
- longs_pre_entry,index_type, entries_in_use, chunk_id, base);
-#endif
-
- if(stream_id >= s->nb_streams || stream_id < 0)
- return -1;
- st= s->streams[stream_id];
+ int64_t last_pos = -1;
+ int64_t filesize = avi->fsize;
+
+ av_log(s, AV_LOG_TRACE,
+ "longs_pre_entry:%d index_type:%d entries_in_use:%d "
+ "chunk_id:%X base:%16"PRIX64"\n",
+ longs_pre_entry,
+ index_type,
+ entries_in_use,
+ chunk_id,
+ base);
+
+ if (stream_id >= s->nb_streams || stream_id < 0)
+ return AVERROR_INVALIDDATA;
+ st = s->streams[stream_id];
ast = st->priv_data;
- if(index_sub_type)
- return -1;
+ if (index_sub_type)
+ return AVERROR_INVALIDDATA;
- get_le32(pb);
+ avio_rl32(pb);
- if(index_type && longs_pre_entry != 2)
- return -1;
- if(index_type>1)
- return -1;
+ if (index_type && longs_pre_entry != 2)
+ return AVERROR_INVALIDDATA;
+ if (index_type > 1)
+ return AVERROR_INVALIDDATA;
- if(filesize > 0 && base >= filesize){
+ 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)
+ if (base >> 32 == (base & 0xFFFFFFFF) &&
+ (base & 0xFFFFFFFF) < filesize &&
+ filesize <= 0xFFFFFFFF)
base &= 0xFFFFFFFF;
else
- return -1;
+ return AVERROR_INVALIDDATA;
}
- for(i=0; i<entries_in_use; i++){
- if(index_type){
- int64_t pos= get_le32(pb) + base - 8;
- int len = get_le32(pb);
- int key= len >= 0;
+ for (i = 0; i < entries_in_use; i++) {
+ if (index_type) {
+ int64_t pos = avio_rl32(pb) + base - 8;
+ int len = avio_rl32(pb);
+ int key = len >= 0;
len &= 0x7FFFFFFF;
-#ifdef DEBUG_SEEK
- av_log(s, AV_LOG_ERROR, "pos:%"PRId64", len:%X\n", pos, len);
-#endif
- if(url_feof(pb))
- return -1;
+ av_log(s, AV_LOG_TRACE, "pos:%"PRId64", len:%X\n", pos, len);
+
+ if (pb->eof_reached)
+ return AVERROR_INVALIDDATA;
- if(last_pos == pos || pos == base - 8)
- avi->non_interleaved= 1;
- if(last_pos != pos && (len || !ast->sample_size))
- av_add_index_entry(st, pos, ast->cum_len, len, 0, key ? AVINDEX_KEYFRAME : 0);
+ if (last_pos == pos || pos == base - 8)
+ avi->non_interleaved = 1;
+ if (last_pos != pos && (len || !ast->sample_size))
+ av_add_index_entry(st, pos, ast->cum_len, len, 0,
+ key ? AVINDEX_KEYFRAME : 0);
ast->cum_len += get_duration(ast, len);
- last_pos= pos;
- }else{
+ last_pos = pos;
+ } else {
int64_t offset, pos;
int duration;
- offset = get_le64(pb);
- get_le32(pb); /* size */
- duration = get_le32(pb);
+ offset = avio_rl64(pb);
+ avio_rl32(pb); /* size */
+ duration = avio_rl32(pb);
- if(url_feof(pb))
- return -1;
+ if (pb->eof_reached)
+ return AVERROR_INVALIDDATA;
- pos = url_ftell(pb);
+ pos = avio_tell(pb);
- if(avi->odml_depth > MAX_ODML_DEPTH){
+ if (avi->odml_depth > MAX_ODML_DEPTH) {
av_log(s, AV_LOG_ERROR, "Too deeply nested ODML indexes\n");
- return -1;
+ return AVERROR_INVALIDDATA;
}
- url_fseek(pb, offset+8, SEEK_SET);
+ avio_seek(pb, offset + 8, SEEK_SET);
avi->odml_depth++;
read_braindead_odml_indx(s, frame_num);
avi->odml_depth--;
frame_num += duration;
- url_fseek(pb, pos, SEEK_SET);
+ avio_seek(pb, pos, SEEK_SET);
}
}
- avi->index_loaded=1;
+ avi->index_loaded = 1;
return 0;
}
-static void clean_index(AVFormatContext *s){
+static void clean_index(AVFormatContext *s)
+{
int i;
int64_t j;
- for(i=0; i<s->nb_streams; i++){
- AVStream *st = s->streams[i];
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
AVIStream *ast = st->priv_data;
- int n= st->nb_index_entries;
- int max= ast->sample_size;
+ int n = st->nb_index_entries;
+ int max = ast->sample_size;
int64_t pos, size, ts;
- if(n != 1 || ast->sample_size==0)
+ if (n != 1 || ast->sample_size == 0)
continue;
- while(max < 1024) max+=max;
+ while (max < 1024)
+ max += max;
- pos= st->index_entries[0].pos;
- size= st->index_entries[0].size;
- ts= st->index_entries[0].timestamp;
+ pos = st->index_entries[0].pos;
+ size = st->index_entries[0].size;
+ ts = st->index_entries[0].timestamp;
- for(j=0; j<size; j+=max){
- av_add_index_entry(st, pos+j, ts+j, FFMIN(max, size-j), 0, AVINDEX_KEYFRAME);
- }
+ for (j = 0; j < size; j += max)
+ av_add_index_entry(st, pos + j, ts + j, FFMIN(max, size - j), 0,
+ AVINDEX_KEYFRAME);
}
}
-static int avi_read_tag(AVFormatContext *s, AVStream *st, uint32_t tag, uint32_t size)
+static int avi_read_tag(AVFormatContext *s, AVStream *st, uint32_t tag,
+ uint32_t size)
{
- ByteIOContext *pb = s->pb;
- char key[5] = {0}, *value;
+ AVIOContext *pb = s->pb;
+ char key[5] = { 0 };
+ char *value;
size += (size & 1);
if (size == UINT_MAX)
- return -1;
- value = av_malloc(size+1);
+ return AVERROR(EINVAL);
+ value = av_malloc(size + 1);
if (!value)
- return -1;
- get_buffer(pb, value, size);
- value[size]=0;
+ return AVERROR(ENOMEM);
+ avio_read(pb, value, size);
+ value[size] = 0;
AV_WL32(key, tag);
- if(st)
- return av_metadata_set2(&st->metadata, key, value,
- AV_METADATA_DONT_STRDUP_VAL);
- else
- return av_metadata_set2(&s->metadata, key, value,
- AV_METADATA_DONT_STRDUP_VAL);
+ return av_dict_set(st ? &st->metadata : &s->metadata, key, value,
+ AV_DICT_DONT_STRDUP_VAL);
}
-static void avi_read_info(AVFormatContext *s, uint64_t end)
+static const char months[12][4] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
+
+static void avi_metadata_creation_time(AVDictionary **metadata, char *date)
+{
+ char month[4], time[9], buffer[64];
+ int i, day, year;
+ /* parse standard AVI date format (ie. "Mon Mar 10 15:04:43 2003") */
+ if (sscanf(date, "%*3s%*[ ]%3s%*[ ]%2d%*[ ]%8s%*[ ]%4d",
+ month, &day, time, &year) == 4) {
+ for (i = 0; i < 12; i++)
+ if (!av_strcasecmp(month, months[i])) {
+ snprintf(buffer, sizeof(buffer), "%.4d-%.2d-%.2d %s",
+ year, i + 1, day, time);
+ av_dict_set(metadata, "creation_time", buffer, 0);
+ }
+ } else if (date[4] == '/' && date[7] == '/') {
+ date[4] = date[7] = '-';
+ av_dict_set(metadata, "creation_time", date, 0);
+ }
+}
+
+static void avi_read_nikon(AVFormatContext *s, uint64_t end)
{
- while (url_ftell(s->pb) < end) {
- uint32_t tag = get_le32(s->pb);
- uint32_t size = get_le32(s->pb);
- avi_read_tag(s, NULL, tag, size);
+ while (avio_tell(s->pb) < end) {
+ uint32_t tag = avio_rl32(s->pb);
+ uint32_t size = avio_rl32(s->pb);
+ switch (tag) {
+ case MKTAG('n', 'c', 't', 'g'): /* Nikon Tags */
+ {
+ uint64_t tag_end = avio_tell(s->pb) + size;
+ while (avio_tell(s->pb) < tag_end) {
+ uint16_t tag = avio_rl16(s->pb);
+ uint16_t size = avio_rl16(s->pb);
+ const char *name = NULL;
+ char buffer[64] = { 0 };
+ size -= avio_read(s->pb, buffer,
+ FFMIN(size, sizeof(buffer) - 1));
+ switch (tag) {
+ case 0x03:
+ name = "maker";
+ break;
+ case 0x04:
+ name = "model";
+ break;
+ case 0x13:
+ name = "creation_time";
+ if (buffer[4] == ':' && buffer[7] == ':')
+ buffer[4] = buffer[7] = '-';
+ break;
+ }
+ if (name)
+ av_dict_set(&s->metadata, name, buffer, 0);
+ avio_skip(s->pb, size);
+ }
+ break;
+ }
+ default:
+ avio_skip(s->pb, size);
+ break;
+ }
}
}
-static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
+static int avi_read_header(AVFormatContext *s)
{
AVIContext *avi = s->priv_data;
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
unsigned int tag, tag1, handler;
- int codec_type, stream_index, frame_period, bit_rate;
+ int codec_type, stream_index, frame_period;
unsigned int size;
int i;
AVStream *st;
- AVIStream *ast = NULL;
- int avih_width=0, avih_height=0;
- int amv_file_format=0;
- uint64_t list_end = 0;
+ AVIStream *ast = NULL;
+ int avih_width = 0, avih_height = 0;
+ int amv_file_format = 0;
+ uint64_t list_end = 0;
+ int ret;
- avi->stream_index= -1;
+ avi->stream_index = -1;
- if (get_riff(s, pb) < 0)
- return -1;
+ ret = get_riff(s, pb);
+ if (ret < 0)
+ return ret;
- avi->fsize = url_fsize(pb);
- if(avi->fsize<=0)
- avi->fsize= avi->riff_end == 8 ? INT64_MAX : avi->riff_end;
+ avi->fsize = avio_size(pb);
+ if (avi->fsize <= 0 || avi->fsize < avi->riff_end)
+ avi->fsize = avi->riff_end == 8 ? INT64_MAX : avi->riff_end;
/* first list tag */
stream_index = -1;
- codec_type = -1;
+ codec_type = -1;
frame_period = 0;
- for(;;) {
- if (url_feof(pb))
+ for (;;) {
+ if (pb->eof_reached)
goto fail;
- tag = get_le32(pb);
- size = get_le32(pb);
-#ifdef DEBUG
+ tag = avio_rl32(pb);
+ size = avio_rl32(pb);
+
print_tag("tag", tag, size);
-#endif
- switch(tag) {
+ switch (tag) {
case MKTAG('L', 'I', 'S', 'T'):
- list_end = url_ftell(pb) + size;
+ list_end = avio_tell(pb) + size;
/* Ignored, except at start of video packets. */
- tag1 = get_le32(pb);
-#ifdef DEBUG
+ tag1 = avio_rl32(pb);
+
print_tag("list", tag1, 0);
-#endif
+
if (tag1 == MKTAG('m', 'o', 'v', 'i')) {
- avi->movi_list = url_ftell(pb) - 4;
- if(size) avi->movi_end = avi->movi_list + size + (size & 1);
- else avi->movi_end = url_fsize(pb);
- dprintf(NULL, "movi end=%"PRIx64"\n", avi->movi_end);
+ avi->movi_list = avio_tell(pb) - 4;
+ if (size)
+ avi->movi_end = avi->movi_list + size + (size & 1);
+ else
+ avi->movi_end = avi->fsize;
+ av_log(NULL, AV_LOG_TRACE, "movi end=%"PRIx64"\n", avi->movi_end);
goto end_of_header;
- }
- else if (tag1 == MKTAG('I', 'N', 'F', 'O'))
- avi_read_info(s, list_end);
+ } else if (tag1 == MKTAG('I', 'N', 'F', 'O'))
+ ff_read_riff_info(s, size - 4);
+ else if (tag1 == MKTAG('n', 'c', 'd', 't'))
+ avi_read_nikon(s, list_end);
break;
+ case MKTAG('I', 'D', 'I', 'T'):
+ {
+ unsigned char date[64] = { 0 };
+ size += (size & 1);
+ size -= avio_read(pb, date, FFMIN(size, sizeof(date) - 1));
+ avio_skip(pb, size);
+ avi_metadata_creation_time(&s->metadata, date);
+ break;
+ }
case MKTAG('d', 'm', 'l', 'h'):
avi->is_odml = 1;
- url_fskip(pb, size + (size & 1));
+ avio_skip(pb, size + (size & 1));
break;
case MKTAG('a', 'm', 'v', 'h'):
- amv_file_format=1;
+ amv_file_format = 1;
case MKTAG('a', 'v', 'i', 'h'):
/* AVI header */
/* using frame_period is bad idea */
- frame_period = get_le32(pb);
- bit_rate = get_le32(pb) * 8;
- get_le32(pb);
- avi->non_interleaved |= get_le32(pb) & AVIF_MUSTUSEINDEX;
-
- url_fskip(pb, 2 * 4);
- get_le32(pb);
- get_le32(pb);
- avih_width=get_le32(pb);
- avih_height=get_le32(pb);
-
- url_fskip(pb, size - 10 * 4);
+ frame_period = avio_rl32(pb);
+ avio_skip(pb, 4);
+ avio_rl32(pb);
+ avi->non_interleaved |= avio_rl32(pb) & AVIF_MUSTUSEINDEX;
+
+ avio_skip(pb, 2 * 4);
+ avio_rl32(pb);
+ avio_rl32(pb);
+ avih_width = avio_rl32(pb);
+ avih_height = avio_rl32(pb);
+
+ avio_skip(pb, size - 10 * 4);
break;
case MKTAG('s', 't', 'r', 'h'):
/* stream header */
- tag1 = get_le32(pb);
- handler = get_le32(pb); /* codec tag */
+ tag1 = avio_rl32(pb);
+ handler = avio_rl32(pb); /* codec tag */
- if(tag1 == MKTAG('p', 'a', 'd', 's')){
- url_fskip(pb, size - 8);
+ if (tag1 == MKTAG('p', 'a', 'd', 's')) {
+ avio_skip(pb, size - 8);
break;
- }else{
+ } else {
stream_index++;
- st = av_new_stream(s, stream_index);
+ st = avformat_new_stream(s, NULL);
if (!st)
goto fail;
- ast = av_mallocz(sizeof(AVIStream));
+ st->id = stream_index;
+ ast = av_mallocz(sizeof(AVIStream));
if (!ast)
goto fail;
st->priv_data = ast;
}
- if(amv_file_format)
- tag1 = stream_index ? MKTAG('a','u','d','s') : MKTAG('v','i','d','s');
+ if (amv_file_format)
+ tag1 = stream_index ? MKTAG('a', 'u', 'd', 's')
+ : MKTAG('v', 'i', 'd', 's');
-#ifdef DEBUG
print_tag("strh", tag1, -1);
-#endif
- if(tag1 == MKTAG('i', 'a', 'v', 's') || tag1 == MKTAG('i', 'v', 'a', 's')){
+
+ if (tag1 == MKTAG('i', 'a', 'v', 's') ||
+ tag1 == MKTAG('i', 'v', 'a', 's')) {
int64_t dv_dur;
- /*
- * After some consideration -- I don't think we
- * have to support anything but DV in type1 AVIs.
- */
+ /* After some consideration -- I don't think we
+ * have to support anything but DV in type1 AVIs. */
if (s->nb_streams != 1)
goto fail;
if (handler != MKTAG('d', 'v', 's', 'd') &&
handler != MKTAG('d', 'v', 'h', 'd') &&
handler != MKTAG('d', 'v', 's', 'l'))
- goto fail;
+ goto fail;
ast = s->streams[0]->priv_data;
av_freep(&s->streams[0]->codec->extradata);
+ av_freep(&s->streams[0]->codec);
+ av_freep(&s->streams[0]->info);
av_freep(&s->streams[0]);
s->nb_streams = 0;
if (CONFIG_DV_DEMUXER) {
- avi->dv_demux = dv_init_demux(s);
+ avi->dv_demux = avpriv_dv_init_demux(s);
if (!avi->dv_demux)
goto fail;
- }
+ } else
+ goto fail;
s->streams[0]->priv_data = ast;
- url_fskip(pb, 3 * 4);
- ast->scale = get_le32(pb);
- ast->rate = get_le32(pb);
- url_fskip(pb, 4); /* start time */
+ avio_skip(pb, 3 * 4);
+ ast->scale = avio_rl32(pb);
+ ast->rate = avio_rl32(pb);
+ avio_skip(pb, 4); /* start time */
- dv_dur = get_le32(pb);
+ dv_dur = avio_rl32(pb);
if (ast->scale > 0 && ast->rate > 0 && dv_dur > 0) {
- dv_dur *= AV_TIME_BASE;
+ dv_dur *= AV_TIME_BASE;
s->duration = av_rescale(dv_dur, ast->scale, ast->rate);
}
- /*
- * else, leave duration alone; timing estimation in utils.c
- * will make a guess based on bitrate.
- */
+ /* else, leave duration alone; timing estimation in utils.c
+ * will make a guess based on bitrate. */
stream_index = s->nb_streams - 1;
- url_fskip(pb, size - 9*4);
+ avio_skip(pb, size - 9 * 4);
break;
}
assert(stream_index < s->nb_streams);
- st->codec->stream_codec_tag= handler;
-
- get_le32(pb); /* flags */
- get_le16(pb); /* priority */
- get_le16(pb); /* language */
- get_le32(pb); /* initial frame */
- ast->scale = get_le32(pb);
- ast->rate = get_le32(pb);
- if(!(ast->scale && ast->rate)){
- av_log(s, AV_LOG_WARNING, "scale/rate is %u/%u which is invalid. (This file has been generated by broken software.)\n", ast->scale, ast->rate);
- if(frame_period){
- ast->rate = 1000000;
+ ast->handler = handler;
+
+ avio_rl32(pb); /* flags */
+ avio_rl16(pb); /* priority */
+ avio_rl16(pb); /* language */
+ avio_rl32(pb); /* initial frame */
+ ast->scale = avio_rl32(pb);
+ ast->rate = avio_rl32(pb);
+ if (!(ast->scale && ast->rate)) {
+ av_log(s, AV_LOG_WARNING,
+ "scale/rate is %"PRIu32"/%"PRIu32" which is invalid. "
+ "(This file has been generated by broken software.)\n",
+ ast->scale,
+ ast->rate);
+ if (frame_period) {
+ ast->rate = 1000000;
ast->scale = frame_period;
- }else{
- ast->rate = 25;
+ } else {
+ ast->rate = 25;
ast->scale = 1;
}
}
- av_set_pts_info(st, 64, ast->scale, ast->rate);
+ avpriv_set_pts_info(st, 64, ast->scale, ast->rate);
- ast->cum_len=get_le32(pb); /* start */
- st->nb_frames = get_le32(pb);
+ ast->cum_len = avio_rl32(pb); /* start */
+ st->nb_frames = avio_rl32(pb);
st->start_time = 0;
- get_le32(pb); /* buffer size */
- get_le32(pb); /* quality */
- ast->sample_size = get_le32(pb); /* sample ssize */
- ast->cum_len *= FFMAX(1, ast->sample_size);
-// av_log(s, AV_LOG_DEBUG, "%d %d %d %d\n", ast->rate, ast->scale, ast->start, ast->sample_size);
-
- switch(tag1) {
+ avio_rl32(pb); /* buffer size */
+ avio_rl32(pb); /* quality */
+ ast->sample_size = avio_rl32(pb); /* sample ssize */
+ ast->cum_len *= FFMAX(1, ast->sample_size);
+ av_log(s, AV_LOG_TRACE, "%"PRIu32" %"PRIu32" %d\n",
+ ast->rate, ast->scale, ast->sample_size);
+
+ switch (tag1) {
case MKTAG('v', 'i', 'd', 's'):
codec_type = AVMEDIA_TYPE_VIDEO;
codec_type = AVMEDIA_TYPE_AUDIO;
break;
case MKTAG('t', 'x', 't', 's'):
- //FIXME
- codec_type = AVMEDIA_TYPE_DATA; //AVMEDIA_TYPE_SUB ? FIXME
+ codec_type = AVMEDIA_TYPE_SUBTITLE;
break;
case MKTAG('d', 'a', 't', 's'):
codec_type = AVMEDIA_TYPE_DATA;
av_log(s, AV_LOG_ERROR, "unknown stream type %X\n", tag1);
goto fail;
}
- if(ast->sample_size == 0)
+
+ if (ast->sample_size < 0) {
+ if (s->error_recognition & AV_EF_EXPLODE) {
+ av_log(s, AV_LOG_ERROR,
+ "Invalid sample_size %d at stream %d\n",
+ ast->sample_size,
+ stream_index);
+ goto fail;
+ }
+ av_log(s, AV_LOG_WARNING,
+ "Invalid sample_size %d at stream %d "
+ "setting it to 0\n",
+ ast->sample_size,
+ stream_index);
+ ast->sample_size = 0;
+ }
+
+ if (ast->sample_size == 0)
st->duration = st->nb_frames;
- ast->frame_offset= ast->cum_len;
- url_fskip(pb, size - 12 * 4);
+ ast->frame_offset = ast->cum_len;
+ avio_skip(pb, size - 12 * 4);
break;
case MKTAG('s', 't', 'r', 'f'):
/* stream header */
if (stream_index >= (unsigned)s->nb_streams || avi->dv_demux) {
- url_fskip(pb, size);
+ avio_skip(pb, size);
} else {
- uint64_t cur_pos = url_ftell(pb);
+ uint64_t cur_pos = avio_tell(pb);
if (cur_pos < list_end)
size = FFMIN(size, list_end - cur_pos);
st = s->streams[stream_index];
- switch(codec_type) {
+ switch (codec_type) {
case AVMEDIA_TYPE_VIDEO:
- if(amv_file_format){
- st->codec->width=avih_width;
- st->codec->height=avih_height;
+ if (amv_file_format) {
+ st->codec->width = avih_width;
+ st->codec->height = avih_height;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- st->codec->codec_id = CODEC_ID_AMV;
- url_fskip(pb, size);
+ st->codec->codec_id = AV_CODEC_ID_AMV;
+ avio_skip(pb, size);
break;
}
- get_le32(pb); /* size */
- st->codec->width = get_le32(pb);
- st->codec->height = (int32_t)get_le32(pb);
- get_le16(pb); /* panes */
- st->codec->bits_per_coded_sample= get_le16(pb); /* depth */
- tag1 = get_le32(pb);
- get_le32(pb); /* ImageSize */
- get_le32(pb); /* XPelsPerMeter */
- get_le32(pb); /* YPelsPerMeter */
- get_le32(pb); /* ClrUsed */
- get_le32(pb); /* ClrImportant */
-
- if (tag1 == MKTAG('D', 'X', 'S', 'B') || tag1 == MKTAG('D','X','S','A')) {
+ tag1 = ff_get_bmp_header(pb, st);
+
+ if (tag1 == MKTAG('D', 'X', 'S', 'B') ||
+ tag1 == MKTAG('D', 'X', 'S', 'A')) {
st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
- st->codec->codec_tag = tag1;
- st->codec->codec_id = CODEC_ID_XSUB;
+ st->codec->codec_tag = tag1;
+ st->codec->codec_id = AV_CODEC_ID_XSUB;
break;
}
- if(size > 10*4 && size<(1<<30)){
- st->codec->extradata_size= size - 10*4;
- st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (size > 10 * 4 && size < (1 << 30)) {
+ st->codec->extradata_size = size - 10 * 4;
+ st->codec->extradata = av_malloc(st->codec->extradata_size +
+ AV_INPUT_BUFFER_PADDING_SIZE);
if (!st->codec->extradata) {
- st->codec->extradata_size= 0;
+ st->codec->extradata_size = 0;
return AVERROR(ENOMEM);
}
- get_buffer(pb, st->codec->extradata, st->codec->extradata_size);
+ avio_read(pb,
+ st->codec->extradata,
+ st->codec->extradata_size);
}
- if(st->codec->extradata_size & 1) //FIXME check if the encoder really did this correctly
- get_byte(pb);
-
- /* Extract palette from extradata if bpp <= 8. */
- /* This code assumes that extradata contains only palette. */
- /* This is true for all paletted codecs implemented in FFmpeg. */
- if (st->codec->extradata_size && (st->codec->bits_per_coded_sample <= 8)) {
- st->codec->palctrl = av_mallocz(sizeof(AVPaletteControl));
+ // FIXME: check if the encoder really did this correctly
+ if (st->codec->extradata_size & 1)
+ avio_r8(pb);
+
+ /* Extract palette from extradata if bpp <= 8.
+ * This code assumes that extradata contains only palette.
+ * This is true for all paletted codecs implemented in
+ * Libav. */
+ if (st->codec->extradata_size &&
+ (st->codec->bits_per_coded_sample <= 8)) {
+ int pal_size = (1 << st->codec->bits_per_coded_sample) << 2;
+ const uint8_t *pal_src;
+
+ pal_size = FFMIN(pal_size, st->codec->extradata_size);
+ pal_src = st->codec->extradata +
+ st->codec->extradata_size - pal_size;
#if HAVE_BIGENDIAN
- for (i = 0; i < FFMIN(st->codec->extradata_size, AVPALETTE_SIZE)/4; i++)
- st->codec->palctrl->palette[i] = bswap_32(((uint32_t*)st->codec->extradata)[i]);
+ for (i = 0; i < pal_size / 4; i++)
+ ast->pal[i] = av_bswap32(((uint32_t *)pal_src)[i]);
#else
- memcpy(st->codec->palctrl->palette, st->codec->extradata,
- FFMIN(st->codec->extradata_size, AVPALETTE_SIZE));
+ memcpy(ast->pal, pal_src, pal_size);
#endif
- st->codec->palctrl->palette_changed = 1;
+ ast->has_pal = 1;
}
-#ifdef DEBUG
print_tag("video", tag1, 0);
-#endif
+
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- st->codec->codec_tag = tag1;
- st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags, tag1);
- st->need_parsing = AVSTREAM_PARSE_HEADERS; // This is needed to get the pict type which is necessary for generating correct pts.
+ st->codec->codec_tag = tag1;
+ st->codec->codec_id = ff_codec_get_id(ff_codec_bmp_tags,
+ tag1);
+ /* If codec is not found yet, try with the mov tags. */
+ if (!st->codec->codec_id) {
+ char tag_buf[32];
+ av_get_codec_tag_string(tag_buf, sizeof(tag_buf), tag1);
+ st->codec->codec_id =
+ ff_codec_get_id(ff_codec_movvideo_tags, tag1);
+ if (st->codec->codec_id)
+ av_log(s, AV_LOG_WARNING,
+ "mov tag found in avi (fourcc %s)\n",
+ tag_buf);
+ }
+ /* This is needed to get the pict type which is necessary
+ * for generating correct pts. */
+ st->need_parsing = AVSTREAM_PARSE_HEADERS;
+
+ if (st->codec->codec_id == AV_CODEC_ID_MPEG4 &&
+ ast->handler == MKTAG('X', 'V', 'I', 'D'))
+ st->codec->codec_tag = MKTAG('X', 'V', 'I', 'D');
+
// Support "Resolution 1:1" for Avid AVI Codec
- if(tag1 == MKTAG('A', 'V', 'R', 'n') &&
- st->codec->extradata_size >= 31 &&
- !memcmp(&st->codec->extradata[28], "1:1", 3))
- st->codec->codec_id = CODEC_ID_RAWVIDEO;
-
- if(st->codec->codec_tag==0 && st->codec->height > 0 && st->codec->extradata_size < 1U<<30){
- st->codec->extradata_size+= 9;
- st->codec->extradata= av_realloc(st->codec->extradata, st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
- if(st->codec->extradata)
- memcpy(st->codec->extradata + st->codec->extradata_size - 9, "BottomUp", 9);
+ if (tag1 == MKTAG('A', 'V', 'R', 'n') &&
+ st->codec->extradata_size >= 31 &&
+ !memcmp(&st->codec->extradata[28], "1:1", 3))
+ st->codec->codec_id = AV_CODEC_ID_RAWVIDEO;
+
+ if (st->codec->codec_tag == 0 && st->codec->height > 0 &&
+ st->codec->extradata_size < 1U << 30) {
+ st->codec->extradata_size += 9;
+ if ((ret = av_reallocp(&st->codec->extradata,
+ st->codec->extradata_size +
+ AV_INPUT_BUFFER_PADDING_SIZE)) < 0) {
+ st->codec->extradata_size = 0;
+ return ret;
+ } else
+ memcpy(st->codec->extradata + st->codec->extradata_size - 9,
+ "BottomUp", 9);
}
- st->codec->height= FFABS(st->codec->height);
+ st->codec->height = FFABS(st->codec->height);
-// url_fskip(pb, size - 5 * 4);
+// avio_skip(pb, size - 5 * 4);
break;
case AVMEDIA_TYPE_AUDIO:
- ff_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_WARNING, "sample size (%d) != block align (%d)\n", ast->sample_size, st->codec->block_align);
- ast->sample_size= st->codec->block_align;
+ ret = ff_get_wav_header(s, pb, st->codec, size);
+ if (ret < 0)
+ return ret;
+ ast->dshow_block_align = st->codec->block_align;
+ if (ast->sample_size && st->codec->block_align &&
+ ast->sample_size != st->codec->block_align) {
+ av_log(s,
+ AV_LOG_WARNING,
+ "sample size (%d) != block align (%d)\n",
+ ast->sample_size,
+ st->codec->block_align);
+ ast->sample_size = st->codec->block_align;
}
- if (size&1) /* 2-aligned (fix for Stargate SG-1 - 3x18 - Shades of Grey.avi) */
- url_fskip(pb, 1);
+ /* 2-aligned
+ * (fix for Stargate SG-1 - 3x18 - Shades of Grey.avi) */
+ if (size & 1)
+ avio_skip(pb, 1);
/* Force parsing as several audio frames can be in
* one packet and timestamps refer to packet start. */
st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
/* ADTS header is in extradata, AAC without header must be
* stored as exact frames. Parser not needed and it will
* fail. */
- if (st->codec->codec_id == CODEC_ID_AAC && st->codec->extradata_size)
+ if (st->codec->codec_id == AV_CODEC_ID_AAC &&
+ st->codec->extradata_size)
st->need_parsing = AVSTREAM_PARSE_NONE;
/* AVI files with Xan DPCM audio (wrongly) declare PCM
* audio in the header but have Axan as stream_code_tag. */
- if (st->codec->stream_codec_tag == AV_RL32("Axan")){
- st->codec->codec_id = CODEC_ID_XAN_DPCM;
+ if (ast->handler == AV_RL32("Axan")) {
+ st->codec->codec_id = AV_CODEC_ID_XAN_DPCM;
st->codec->codec_tag = 0;
}
- if (amv_file_format)
- st->codec->codec_id = CODEC_ID_ADPCM_IMA_AMV;
+ if (amv_file_format) {
+ st->codec->codec_id = AV_CODEC_ID_ADPCM_IMA_AMV;
+ ast->dshow_block_align = 0;
+ }
+ break;
+ case AVMEDIA_TYPE_SUBTITLE:
+ st->codec->codec_type = AVMEDIA_TYPE_SUBTITLE;
+ st->codec->codec_id = AV_CODEC_ID_PROBE;
break;
default:
st->codec->codec_type = AVMEDIA_TYPE_DATA;
- st->codec->codec_id= CODEC_ID_NONE;
- st->codec->codec_tag= 0;
- url_fskip(pb, size);
+ st->codec->codec_id = AV_CODEC_ID_NONE;
+ st->codec->codec_tag = 0;
+ avio_skip(pb, size);
break;
}
}
break;
case MKTAG('i', 'n', 'd', 'x'):
- i= url_ftell(pb);
- if(!url_is_streamed(pb) && !(s->flags & AVFMT_FLAG_IGNIDX)){
- read_braindead_odml_indx(s, 0);
- }
- url_fseek(pb, i+size, SEEK_SET);
+ i = avio_tell(pb);
+ if (pb->seekable && !(s->flags & AVFMT_FLAG_IGNIDX) &&
+ read_braindead_odml_indx(s, 0) < 0 &&
+ (s->error_recognition & AV_EF_EXPLODE))
+ goto fail;
+ avio_seek(pb, i + size, SEEK_SET);
break;
case MKTAG('v', 'p', 'r', 'p'):
- if(stream_index < (unsigned)s->nb_streams && size > 9*4){
+ if (stream_index < (unsigned)s->nb_streams && size > 9 * 4) {
AVRational active, active_aspect;
st = s->streams[stream_index];
- get_le32(pb);
- get_le32(pb);
- get_le32(pb);
- get_le32(pb);
- get_le32(pb);
-
- active_aspect.den= get_le16(pb);
- active_aspect.num= get_le16(pb);
- active.num = get_le32(pb);
- active.den = get_le32(pb);
- get_le32(pb); //nbFieldsPerFrame
-
- if(active_aspect.num && active_aspect.den && active.num && active.den){
- st->sample_aspect_ratio= av_div_q(active_aspect, active);
-//av_log(s, AV_LOG_ERROR, "vprp %d/%d %d/%d\n", active_aspect.num, active_aspect.den, active.num, active.den);
+ avio_rl32(pb);
+ avio_rl32(pb);
+ avio_rl32(pb);
+ avio_rl32(pb);
+ avio_rl32(pb);
+
+ active_aspect.den = avio_rl16(pb);
+ active_aspect.num = avio_rl16(pb);
+ active.num = avio_rl32(pb);
+ active.den = avio_rl32(pb);
+ avio_rl32(pb); // nbFieldsPerFrame
+
+ if (active_aspect.num && active_aspect.den &&
+ active.num && active.den) {
+ st->sample_aspect_ratio = av_div_q(active_aspect, active);
+ av_log(s, AV_LOG_TRACE, "vprp %d/%d %d/%d\n",
+ active_aspect.num, active_aspect.den,
+ active.num, active.den);
}
- size -= 9*4;
+ size -= 9 * 4;
}
- url_fseek(pb, size, SEEK_CUR);
+ avio_skip(pb, size);
break;
case MKTAG('s', 't', 'r', 'n'):
- if(s->nb_streams){
- avi_read_tag(s, s->streams[s->nb_streams-1], tag, size);
+ if (s->nb_streams) {
+ ret = avi_read_tag(s, s->streams[s->nb_streams - 1], tag, size);
+ if (ret < 0)
+ return ret;
break;
}
default:
- if(size > 1000000){
- av_log(s, AV_LOG_ERROR, "Something went wrong during header parsing, "
- "I will ignore it and try to continue anyway.\n");
- avi->movi_list = url_ftell(pb) - 4;
- avi->movi_end = url_fsize(pb);
+ if (size > 1000000) {
+ av_log(s, AV_LOG_ERROR,
+ "Something went wrong during header parsing, "
+ "I will ignore it and try to continue anyway.\n");
+ if (s->error_recognition & AV_EF_EXPLODE)
+ goto fail;
+ avi->movi_list = avio_tell(pb) - 4;
+ avi->movi_end = avi->fsize;
goto end_of_header;
}
/* skip tag */
size += (size & 1);
- url_fskip(pb, size);
+ avio_skip(pb, size);
break;
}
}
- end_of_header:
+
+end_of_header:
/* check stream number */
if (stream_index != s->nb_streams - 1) {
- fail:
- return -1;
+
+fail:
+ return AVERROR_INVALIDDATA;
}
- if(!avi->index_loaded && !url_is_streamed(pb))
+ if (!avi->index_loaded && pb->seekable)
avi_load_index(s);
- avi->index_loaded = 1;
- avi->non_interleaved |= guess_ni_flag(s);
- for(i=0; i<s->nb_streams; i++){
+ avi->index_loaded = 1;
+
+ if ((ret = guess_ni_flag(s)) < 0)
+ return ret;
+
+ avi->non_interleaved |= ret;
+ for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
- if(st->nb_index_entries)
+ if (st->nb_index_entries)
break;
}
- if(i==s->nb_streams && avi->non_interleaved) {
- av_log(s, AV_LOG_WARNING, "non-interleaved AVI without index, switching to interleaved\n");
- avi->non_interleaved=0;
+ if (i == s->nb_streams && avi->non_interleaved) {
+ av_log(s, AV_LOG_WARNING,
+ "Non-interleaved AVI without index, switching to interleaved\n");
+ avi->non_interleaved = 0;
}
- if(avi->non_interleaved) {
+ if (avi->non_interleaved) {
av_log(s, AV_LOG_INFO, "non-interleaved AVI\n");
clean_index(s);
}
+ ff_metadata_conv_ctx(s, NULL, avi_metadata_conv);
+ ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
+
return 0;
}
-static int get_stream_idx(int *d){
- if( d[0] >= '0' && d[0] <= '9'
- && d[1] >= '0' && d[1] <= '9'){
+static int read_gab2_sub(AVStream *st, AVPacket *pkt)
+{
+ if (pkt->size >= 7 &&
+ !strcmp(pkt->data, "GAB2") && AV_RL16(pkt->data + 5) == 2) {
+ uint8_t desc[256];
+ int score = AVPROBE_SCORE_EXTENSION, ret;
+ AVIStream *ast = st->priv_data;
+ AVInputFormat *sub_demuxer;
+ AVRational time_base;
+ AVIOContext *pb = avio_alloc_context(pkt->data + 7,
+ pkt->size - 7,
+ 0, NULL, NULL, NULL, NULL);
+ AVProbeData pd;
+ unsigned int desc_len = avio_rl32(pb);
+
+ if (desc_len > pb->buf_end - pb->buf_ptr)
+ goto error;
+
+ ret = avio_get_str16le(pb, desc_len, desc, sizeof(desc));
+ avio_skip(pb, desc_len - ret);
+ if (*desc)
+ av_dict_set(&st->metadata, "title", desc, 0);
+
+ avio_rl16(pb); /* flags? */
+ avio_rl32(pb); /* data size */
+
+ pd = (AVProbeData) { .buf = pb->buf_ptr,
+ .buf_size = pb->buf_end - pb->buf_ptr };
+ if (!(sub_demuxer = av_probe_input_format2(&pd, 1, &score)))
+ goto error;
+
+ if (!(ast->sub_ctx = avformat_alloc_context()))
+ goto error;
+
+ ast->sub_ctx->pb = pb;
+ if (!avformat_open_input(&ast->sub_ctx, "", sub_demuxer, NULL)) {
+ ff_read_packet(ast->sub_ctx, &ast->sub_pkt);
+ *st->codec = *ast->sub_ctx->streams[0]->codec;
+ ast->sub_ctx->streams[0]->codec->extradata = NULL;
+ time_base = ast->sub_ctx->streams[0]->time_base;
+ avpriv_set_pts_info(st, 64, time_base.num, time_base.den);
+ }
+ ast->sub_buffer = pkt->data;
+ memset(pkt, 0, sizeof(*pkt));
+ return 1;
+
+error:
+ av_freep(&pb);
+ }
+ return 0;
+}
+
+static AVStream *get_subtitle_pkt(AVFormatContext *s, AVStream *next_st,
+ AVPacket *pkt)
+{
+ AVIStream *ast, *next_ast = next_st->priv_data;
+ int64_t ts, next_ts, ts_min = INT64_MAX;
+ AVStream *st, *sub_st = NULL;
+ int i;
+
+ next_ts = av_rescale_q(next_ast->frame_offset, next_st->time_base,
+ AV_TIME_BASE_Q);
+
+ for (i = 0; i < s->nb_streams; i++) {
+ st = s->streams[i];
+ ast = st->priv_data;
+ if (st->discard < AVDISCARD_ALL && ast && ast->sub_pkt.data) {
+ ts = av_rescale_q(ast->sub_pkt.dts, st->time_base, AV_TIME_BASE_Q);
+ if (ts <= next_ts && ts < ts_min) {
+ ts_min = ts;
+ sub_st = st;
+ }
+ }
+ }
+
+ if (sub_st) {
+ ast = sub_st->priv_data;
+ *pkt = ast->sub_pkt;
+ pkt->stream_index = sub_st->index;
+
+ if (ff_read_packet(ast->sub_ctx, &ast->sub_pkt) < 0)
+ ast->sub_pkt.data = NULL;
+ }
+ return sub_st;
+}
+
+static int get_stream_idx(int *d)
+{
+ if (d[0] >= '0' && d[0] <= '9' &&
+ d[1] >= '0' && d[1] <= '9') {
return (d[0] - '0') * 10 + (d[1] - '0');
- }else{
- return 100; //invalid stream ID
+ } else {
+ return 100; // invalid stream ID
}
}
-static int avi_read_packet(AVFormatContext *s, AVPacket *pkt)
+static int avi_sync(AVFormatContext *s, int exit_early)
{
AVIContext *avi = s->priv_data;
- ByteIOContext *pb = s->pb;
- int n, d[8];
+ AVIOContext *pb = s->pb;
+ int n;
+ unsigned int d[8];
unsigned int size;
int64_t i, sync;
- void* dstr;
+
+start_sync:
+ memset(d, -1, sizeof(d));
+ for (i = sync = avio_tell(pb); !pb->eof_reached; i++) {
+ int j;
+
+ for (j = 0; j < 7; j++)
+ d[j] = d[j + 1];
+ d[7] = avio_r8(pb);
+
+ size = d[4] + (d[5] << 8) + (d[6] << 16) + (d[7] << 24);
+
+ n = get_stream_idx(d + 2);
+ av_log(s, AV_LOG_TRACE, "%X %X %X %X %X %X %X %X %"PRId64" %u %d\n",
+ d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], i, size, n);
+ if (i + (uint64_t)size > avi->fsize || d[0] > 127)
+ continue;
+
+ // parse ix##
+ if ((d[0] == 'i' && d[1] == 'x' && n < s->nb_streams) ||
+ // parse JUNK
+ (d[0] == 'J' && d[1] == 'U' && d[2] == 'N' && d[3] == 'K') ||
+ (d[0] == 'i' && d[1] == 'd' && d[2] == 'x' && d[3] == '1')) {
+ avio_skip(pb, size);
+ goto start_sync;
+ }
+
+ // parse stray LIST
+ if (d[0] == 'L' && d[1] == 'I' && d[2] == 'S' && d[3] == 'T') {
+ avio_skip(pb, 4);
+ goto start_sync;
+ }
+
+ n = avi->dv_demux ? 0 : get_stream_idx(d);
+
+ if (!((i - avi->last_pkt_pos) & 1) &&
+ get_stream_idx(d + 1) < s->nb_streams)
+ continue;
+
+ // detect ##ix chunk and skip
+ if (d[2] == 'i' && d[3] == 'x' && n < s->nb_streams) {
+ avio_skip(pb, size);
+ goto start_sync;
+ }
+
+ // parse ##dc/##wb
+ if (n < s->nb_streams) {
+ AVStream *st;
+ AVIStream *ast;
+ st = s->streams[n];
+ ast = st->priv_data;
+
+ if (s->nb_streams >= 2) {
+ AVStream *st1 = s->streams[1];
+ AVIStream *ast1 = st1->priv_data;
+ // workaround for broken small-file-bug402.avi
+ if (d[2] == 'w' && d[3] == 'b' && n == 0 &&
+ st->codec->codec_type == AVMEDIA_TYPE_VIDEO &&
+ st1->codec->codec_type == AVMEDIA_TYPE_AUDIO &&
+ ast->prefix == 'd' * 256 + 'c' &&
+ (d[2] * 256 + d[3] == ast1->prefix ||
+ !ast1->prefix_count)) {
+ n = 1;
+ st = st1;
+ ast = ast1;
+ av_log(s, AV_LOG_WARNING,
+ "Invalid stream + prefix combination, assuming audio.\n");
+ }
+ }
+
+ if (!avi->dv_demux &&
+ ((st->discard >= AVDISCARD_DEFAULT && size == 0) /* ||
+ // FIXME: needs a little reordering
+ (st->discard >= AVDISCARD_NONKEY &&
+ !(pkt->flags & AV_PKT_FLAG_KEY)) */
+ || st->discard >= AVDISCARD_ALL)) {
+ if (!exit_early) {
+ ast->frame_offset += get_duration(ast, size);
+ }
+ avio_skip(pb, size);
+ goto start_sync;
+ }
+
+ if (d[2] == 'p' && d[3] == 'c' && size <= 4 * 256 + 4) {
+ int k = avio_r8(pb);
+ int last = (k + avio_r8(pb) - 1) & 0xFF;
+
+ avio_rl16(pb); // flags
+
+ // b + (g << 8) + (r << 16);
+ for (; k <= last; k++)
+ ast->pal[k] = avio_rb32(pb) >> 8;
+
+ ast->has_pal = 1;
+ goto start_sync;
+ } else if (((ast->prefix_count < 5 || sync + 9 > i) &&
+ d[2] < 128 && d[3] < 128) ||
+ d[2] * 256 + d[3] == ast->prefix /* ||
+ (d[2] == 'd' && d[3] == 'c') ||
+ (d[2] == 'w' && d[3] == 'b') */) {
+ if (exit_early)
+ return 0;
+ if (d[2] * 256 + d[3] == ast->prefix)
+ ast->prefix_count++;
+ else {
+ ast->prefix = d[2] * 256 + d[3];
+ ast->prefix_count = 0;
+ }
+
+ avi->stream_index = n;
+ ast->packet_size = size + 8;
+ ast->remaining = size;
+
+ if (size || !ast->sample_size) {
+ uint64_t pos = avio_tell(pb) - 8;
+ if (!st->index_entries || !st->nb_index_entries ||
+ st->index_entries[st->nb_index_entries - 1].pos < pos) {
+ av_add_index_entry(st, pos, ast->frame_offset, size,
+ 0, AVINDEX_KEYFRAME);
+ }
+ }
+ return 0;
+ }
+ }
+ }
+
+ return AVERROR_EOF;
+}
+
+static int avi_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ AVIContext *avi = s->priv_data;
+ AVIOContext *pb = s->pb;
+ int err;
if (CONFIG_DV_DEMUXER && avi->dv_demux) {
- int size = dv_get_packet(avi->dv_demux, pkt);
+ int size = avpriv_dv_get_packet(avi->dv_demux, pkt);
if (size >= 0)
return size;
+ else
+ goto resync;
}
- if(avi->non_interleaved){
+ if (avi->non_interleaved) {
int best_stream_index = 0;
- AVStream *best_st= NULL;
+ AVStream *best_st = NULL;
AVIStream *best_ast;
- int64_t best_ts= INT64_MAX;
+ int64_t best_ts = INT64_MAX;
int i;
- for(i=0; i<s->nb_streams; i++){
- AVStream *st = s->streams[i];
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
AVIStream *ast = st->priv_data;
- int64_t ts= ast->frame_offset;
+ int64_t ts = ast->frame_offset;
int64_t last_ts;
- if(!st->nb_index_entries)
+ if (!st->nb_index_entries)
continue;
last_ts = st->index_entries[st->nb_index_entries - 1].timestamp;
- if(!ast->remaining && ts > last_ts)
+ if (!ast->remaining && ts > last_ts)
continue;
- ts = av_rescale_q(ts, st->time_base, (AVRational){FFMAX(1, ast->sample_size), AV_TIME_BASE});
+ ts = av_rescale_q(ts, st->time_base,
+ (AVRational) { FFMAX(1, ast->sample_size),
+ AV_TIME_BASE });
-// av_log(s, AV_LOG_DEBUG, "%"PRId64" %d/%d %"PRId64"\n", ts, st->time_base.num, st->time_base.den, ast->frame_offset);
- if(ts < best_ts){
- best_ts= ts;
- best_st= st;
- best_stream_index= i;
+ av_log(s, AV_LOG_TRACE, "%"PRId64" %d/%d %"PRId64"\n", ts,
+ st->time_base.num, st->time_base.den, ast->frame_offset);
+ if (ts < best_ts) {
+ best_ts = ts;
+ best_st = st;
+ best_stream_index = i;
}
}
- if(!best_st)
- return -1;
+ if (!best_st)
+ return AVERROR_EOF;
best_ast = best_st->priv_data;
- best_ts = av_rescale_q(best_ts, (AVRational){FFMAX(1, best_ast->sample_size), AV_TIME_BASE}, best_st->time_base);
- if(best_ast->remaining)
- i= av_index_search_timestamp(best_st, best_ts, AVSEEK_FLAG_ANY | AVSEEK_FLAG_BACKWARD);
- else{
- i= av_index_search_timestamp(best_st, best_ts, AVSEEK_FLAG_ANY);
- if(i>=0)
- best_ast->frame_offset= best_st->index_entries[i].timestamp;
+ best_ts = av_rescale_q(best_ts,
+ (AVRational) { FFMAX(1, best_ast->sample_size),
+ AV_TIME_BASE },
+ best_st->time_base);
+ if (best_ast->remaining) {
+ i = av_index_search_timestamp(best_st,
+ best_ts,
+ AVSEEK_FLAG_ANY |
+ AVSEEK_FLAG_BACKWARD);
+ } else {
+ i = av_index_search_timestamp(best_st, best_ts, AVSEEK_FLAG_ANY);
+ if (i >= 0)
+ best_ast->frame_offset = best_st->index_entries[i].timestamp;
}
-// av_log(s, AV_LOG_DEBUG, "%d\n", i);
- if(i>=0){
- int64_t pos= best_st->index_entries[i].pos;
+ if (i >= 0) {
+ int64_t pos = best_st->index_entries[i].pos;
pos += best_ast->packet_size - best_ast->remaining;
- url_fseek(s->pb, pos + 8, SEEK_SET);
-// av_log(s, AV_LOG_DEBUG, "pos=%"PRId64"\n", pos);
+ avio_seek(s->pb, pos + 8, SEEK_SET);
assert(best_ast->remaining <= best_ast->packet_size);
- avi->stream_index= best_stream_index;
- if(!best_ast->remaining)
- best_ast->packet_size=
- best_ast->remaining= best_st->index_entries[i].size;
+ avi->stream_index = best_stream_index;
+ if (!best_ast->remaining)
+ best_ast->packet_size =
+ best_ast->remaining = best_st->index_entries[i].size;
}
}
resync:
- if(avi->stream_index >= 0){
- AVStream *st= s->streams[ avi->stream_index ];
- AVIStream *ast= st->priv_data;
+ if (avi->stream_index >= 0) {
+ AVStream *st = s->streams[avi->stream_index];
+ AVIStream *ast = st->priv_data;
int size, err;
- if(ast->sample_size <= 1) // minorityreport.AVI block_align=1024 sample_size=1 IMA-ADPCM
- size= INT_MAX;
- else if(ast->sample_size < 32)
+ if (get_subtitle_pkt(s, st, pkt))
+ return 0;
+
+ // minorityreport.AVI block_align=1024 sample_size=1 IMA-ADPCM
+ if (ast->sample_size <= 1)
+ size = INT_MAX;
+ else if (ast->sample_size < 32)
// arbitrary multiplier to avoid tiny packets for raw PCM data
- size= 1024*ast->sample_size;
+ size = 1024 * ast->sample_size;
else
- size= ast->sample_size;
+ size = ast->sample_size;
- if(size > ast->remaining)
- size= ast->remaining;
- avi->last_pkt_pos= url_ftell(pb);
- err= av_get_packet(pb, pkt, size);
- if(err<0)
+ if (size > ast->remaining)
+ size = ast->remaining;
+ avi->last_pkt_pos = avio_tell(pb);
+ err = av_get_packet(pb, pkt, size);
+ if (err < 0)
return err;
- if(ast->has_pal && pkt->data && pkt->size<(unsigned)INT_MAX/2){
- void *ptr= av_realloc(pkt->data, pkt->size + 4*256 + FF_INPUT_BUFFER_PADDING_SIZE);
- if(ptr){
- ast->has_pal=0;
- pkt->size += 4*256;
- pkt->data= ptr;
- memcpy(pkt->data + pkt->size - 4*256, ast->pal, 4*256);
- }else
- av_log(s, AV_LOG_ERROR, "Failed to append palette\n");
+ if (ast->has_pal && pkt->data && pkt->size < (unsigned)INT_MAX / 2) {
+ uint8_t *pal;
+ pal = av_packet_new_side_data(pkt,
+ AV_PKT_DATA_PALETTE,
+ AVPALETTE_SIZE);
+ if (!pal) {
+ av_log(s, AV_LOG_ERROR,
+ "Failed to allocate data for palette\n");
+ } else {
+ memcpy(pal, ast->pal, AVPALETTE_SIZE);
+ ast->has_pal = 0;
+ }
}
if (CONFIG_DV_DEMUXER && avi->dv_demux) {
- dstr = pkt->destruct;
- size = dv_produce_packet(avi->dv_demux, pkt,
- pkt->data, pkt->size);
- pkt->destruct = dstr;
+ AVBufferRef *avbuf = pkt->buf;
+ size = avpriv_dv_produce_packet(avi->dv_demux, pkt,
+ pkt->data, pkt->size);
+ pkt->buf = avbuf;
pkt->flags |= AV_PKT_FLAG_KEY;
+ if (size < 0)
+ av_packet_unref(pkt);
+ } else if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE &&
+ !st->codec->codec_tag && read_gab2_sub(st, pkt)) {
+ ast->frame_offset++;
+ avi->stream_index = -1;
+ ast->remaining = 0;
+ goto resync;
} else {
/* XXX: How to handle B-frames in AVI? */
pkt->dts = ast->frame_offset;
// pkt->dts += ast->start;
- if(ast->sample_size)
+ if (ast->sample_size)
pkt->dts /= ast->sample_size;
-//av_log(s, AV_LOG_DEBUG, "dts:%"PRId64" offset:%"PRId64" %d/%d smpl_siz:%d base:%d st:%d size:%d\n", pkt->dts, ast->frame_offset, ast->scale, ast->rate, ast->sample_size, AV_TIME_BASE, avi->stream_index, size);
+ av_log(s, AV_LOG_TRACE,
+ "dts:%"PRId64" offset:%"PRId64" %d/%d smpl_siz:%d "
+ "base:%d st:%d size:%d\n",
+ pkt->dts,
+ ast->frame_offset,
+ ast->scale,
+ ast->rate,
+ ast->sample_size,
+ AV_TIME_BASE,
+ avi->stream_index,
+ size);
pkt->stream_index = avi->stream_index;
if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
int index;
assert(st->index_entries);
- index= av_index_search_timestamp(st, ast->frame_offset, 0);
- e= &st->index_entries[index];
+ index = av_index_search_timestamp(st, ast->frame_offset, 0);
+ e = &st->index_entries[index];
- if(index >= 0 && e->timestamp == ast->frame_offset){
+ if (index >= 0 && e->timestamp == ast->frame_offset)
if (e->flags & AVINDEX_KEYFRAME)
pkt->flags |= AV_PKT_FLAG_KEY;
- }
} else {
pkt->flags |= AV_PKT_FLAG_KEY;
}
ast->frame_offset += get_duration(ast, pkt->size);
}
- ast->remaining -= size;
- if(!ast->remaining){
- avi->stream_index= -1;
- ast->packet_size= 0;
- }
-
- return size;
- }
-
- memset(d, -1, sizeof(int)*8);
- for(i=sync=url_ftell(pb); !url_feof(pb); i++) {
- int j;
-
- for(j=0; j<7; j++)
- d[j]= d[j+1];
- d[7]= get_byte(pb);
-
- size= d[4] + (d[5]<<8) + (d[6]<<16) + (d[7]<<24);
-
- n= get_stream_idx(d+2);
-//av_log(s, AV_LOG_DEBUG, "%X %X %X %X %X %X %X %X %"PRId64" %d %d\n", d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], i, size, n);
- if(i + (uint64_t)size > avi->fsize || d[0]<0)
- continue;
-
- //parse ix##
- if( (d[0] == 'i' && d[1] == 'x' && n < s->nb_streams)
- //parse JUNK
- ||(d[0] == 'J' && d[1] == 'U' && d[2] == 'N' && d[3] == 'K')
- ||(d[0] == 'i' && d[1] == 'd' && d[2] == 'x' && d[3] == '1')){
- url_fskip(pb, size);
-//av_log(s, AV_LOG_DEBUG, "SKIP\n");
- goto resync;
- }
-
- //parse stray LIST
- if(d[0] == 'L' && d[1] == 'I' && d[2] == 'S' && d[3] == 'T'){
- url_fskip(pb, 4);
- goto resync;
- }
-
- n= get_stream_idx(d);
-
- if(!((i-avi->last_pkt_pos)&1) && get_stream_idx(d+1) < s->nb_streams)
- continue;
-
- //detect ##ix chunk and skip
- if(d[2] == 'i' && d[3] == 'x' && n < s->nb_streams){
- url_fskip(pb, size);
- goto resync;
+ ast->remaining -= err;
+ if (!ast->remaining) {
+ avi->stream_index = -1;
+ ast->packet_size = 0;
}
- //parse ##dc/##wb
- if(n < s->nb_streams){
- AVStream *st;
- AVIStream *ast;
- st = s->streams[n];
- ast = st->priv_data;
-
- if(s->nb_streams>=2){
- AVStream *st1 = s->streams[1];
- AVIStream *ast1= st1->priv_data;
- //workaround for broken small-file-bug402.avi
- if( d[2] == 'w' && d[3] == 'b'
- && n==0
- && st ->codec->codec_type == AVMEDIA_TYPE_VIDEO
- && st1->codec->codec_type == AVMEDIA_TYPE_AUDIO
- && ast->prefix == 'd'*256+'c'
- && (d[2]*256+d[3] == ast1->prefix || !ast1->prefix_count)
- ){
- n=1;
- st = st1;
- ast = ast1;
- av_log(s, AV_LOG_WARNING, "Invalid stream + prefix combination, assuming audio.\n");
- }
- }
-
-
- if( (st->discard >= AVDISCARD_DEFAULT && size==0)
- /*|| (st->discard >= AVDISCARD_NONKEY && !(pkt->flags & AV_PKT_FLAG_KEY))*/ //FIXME needs a little reordering
- || st->discard >= AVDISCARD_ALL){
- ast->frame_offset += get_duration(ast, size);
- url_fskip(pb, size);
- goto resync;
- }
-
- if (d[2] == 'p' && d[3] == 'c' && size<=4*256+4) {
- int k = get_byte(pb);
- int last = (k + get_byte(pb) - 1) & 0xFF;
-
- get_le16(pb); //flags
-
- for (; k <= last; k++)
- ast->pal[k] = get_be32(pb)>>8;// b + (g << 8) + (r << 16);
- ast->has_pal= 1;
- goto resync;
- } else if( ((ast->prefix_count<5 || sync+9 > i) && d[2]<128 && d[3]<128) ||
- d[2]*256+d[3] == ast->prefix /*||
- (d[2] == 'd' && d[3] == 'c') ||
- (d[2] == 'w' && d[3] == 'b')*/) {
-
-//av_log(s, AV_LOG_DEBUG, "OK\n");
- if(d[2]*256+d[3] == ast->prefix)
- ast->prefix_count++;
- else{
- ast->prefix= d[2]*256+d[3];
- ast->prefix_count= 0;
- }
-
- avi->stream_index= n;
- ast->packet_size= size + 8;
- ast->remaining= size;
-
- if(size || !ast->sample_size){
- uint64_t pos= url_ftell(pb) - 8;
- if(!st->index_entries || !st->nb_index_entries || st->index_entries[st->nb_index_entries - 1].pos < pos){
- av_add_index_entry(st, pos, ast->frame_offset, size, 0, AVINDEX_KEYFRAME);
- }
- }
- goto resync;
- }
- }
+ return 0;
}
- return AVERROR_EOF;
+ if ((err = avi_sync(s, 0)) < 0)
+ return err;
+ goto resync;
}
/* XXX: We make the implicit supposition that the positions are sorted
- for each stream. */
+ * for each stream. */
static int avi_read_idx1(AVFormatContext *s, int size)
{
AVIContext *avi = s->priv_data;
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
int nb_index_entries, i;
AVStream *st;
AVIStream *ast;
- unsigned int index, tag, flags, pos, len;
- unsigned last_pos= -1;
+ unsigned int index, tag, flags, pos, len, first_packet = 1;
+ unsigned last_pos = -1;
+ int64_t idx1_pos, first_packet_pos = 0, data_offset = 0;
nb_index_entries = size / 16;
if (nb_index_entries <= 0)
- return -1;
+ return AVERROR_INVALIDDATA;
- /* Read the entries and sort them in each stream component. */
- for(i = 0; i < nb_index_entries; i++) {
- tag = get_le32(pb);
- flags = get_le32(pb);
- pos = get_le32(pb);
- len = get_le32(pb);
-#if defined(DEBUG_SEEK)
- av_log(s, AV_LOG_DEBUG, "%d: tag=0x%x flags=0x%x pos=0x%x len=%d/",
- i, tag, flags, pos, len);
-#endif
- if(i==0 && pos > avi->movi_list)
- avi->movi_list= 0; //FIXME better check
- pos += avi->movi_list;
+ idx1_pos = avio_tell(pb);
+ avio_seek(pb, avi->movi_list + 4, SEEK_SET);
+ if (avi_sync(s, 1) == 0)
+ first_packet_pos = avio_tell(pb) - 8;
+ avi->stream_index = -1;
+ avio_seek(pb, idx1_pos, SEEK_SET);
- index = ((tag & 0xff) - '0') * 10;
- index += ((tag >> 8) & 0xff) - '0';
+ /* Read the entries and sort them in each stream component. */
+ for (i = 0; i < nb_index_entries; i++) {
+ tag = avio_rl32(pb);
+ flags = avio_rl32(pb);
+ pos = avio_rl32(pb);
+ len = avio_rl32(pb);
+ av_log(s, AV_LOG_TRACE, "%d: tag=0x%x flags=0x%x pos=0x%x len=%d/",
+ i, tag, flags, pos, len);
+
+ index = ((tag & 0xff) - '0') * 10;
+ index += (tag >> 8 & 0xff) - '0';
if (index >= s->nb_streams)
continue;
- st = s->streams[index];
+ st = s->streams[index];
ast = st->priv_data;
-#if defined(DEBUG_SEEK)
- av_log(s, AV_LOG_DEBUG, "%d cum_len=%"PRId64"\n", len, ast->cum_len);
-#endif
- if(url_feof(pb))
- return -1;
+ if (first_packet && first_packet_pos && len) {
+ data_offset = first_packet_pos - pos;
+ first_packet = 0;
+ }
+ pos += data_offset;
+
+ av_log(s, AV_LOG_TRACE, "%d cum_len=%"PRId64"\n", len, ast->cum_len);
+
+ if (pb->eof_reached)
+ return AVERROR_INVALIDDATA;
- if(last_pos == pos)
- avi->non_interleaved= 1;
- else if(len || !ast->sample_size)
- av_add_index_entry(st, pos, ast->cum_len, len, 0, (flags&AVIIF_INDEX) ? AVINDEX_KEYFRAME : 0);
+ if (last_pos == pos)
+ avi->non_interleaved = 1;
+ else if (len || !ast->sample_size)
+ av_add_index_entry(st, pos, ast->cum_len, len, 0,
+ (flags & AVIIF_INDEX) ? AVINDEX_KEYFRAME : 0);
ast->cum_len += get_duration(ast, len);
- last_pos= pos;
+ last_pos = pos;
}
return 0;
}
-static int guess_ni_flag(AVFormatContext *s){
+/* Scan the index and consider any file with streams more than
+ * 2 seconds or 64MB apart non-interleaved. */
+static int check_stream_max_drift(AVFormatContext *s)
+{
+ int64_t min_pos, pos;
int i;
- int64_t last_start=0;
- int64_t first_end= INT64_MAX;
- int64_t oldpos= url_ftell(s->pb);
+ int *idx = av_mallocz_array(s->nb_streams, sizeof(*idx));
+ if (!idx)
+ return AVERROR(ENOMEM);
+
+ for (min_pos = pos = 0; min_pos != INT64_MAX; pos = min_pos + 1LU) {
+ int64_t max_dts = INT64_MIN / 2;
+ int64_t min_dts = INT64_MAX / 2;
+ int64_t max_buffer = 0;
+
+ min_pos = INT64_MAX;
+
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ AVIStream *ast = st->priv_data;
+ int n = st->nb_index_entries;
+ while (idx[i] < n && st->index_entries[idx[i]].pos < pos)
+ idx[i]++;
+ if (idx[i] < n) {
+ int64_t dts;
+ dts = av_rescale_q(st->index_entries[idx[i]].timestamp /
+ FFMAX(ast->sample_size, 1),
+ st->time_base, AV_TIME_BASE_Q);
+ min_dts = FFMIN(min_dts, dts);
+ min_pos = FFMIN(min_pos, st->index_entries[idx[i]].pos);
+ }
+ }
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ AVIStream *ast = st->priv_data;
- for(i=0; i<s->nb_streams; i++){
+ if (idx[i] && min_dts != INT64_MAX / 2) {
+ int64_t dts;
+ dts = av_rescale_q(st->index_entries[idx[i] - 1].timestamp /
+ FFMAX(ast->sample_size, 1),
+ st->time_base, AV_TIME_BASE_Q);
+ max_dts = FFMAX(max_dts, dts);
+ max_buffer = FFMAX(max_buffer,
+ av_rescale(dts - min_dts,
+ st->codec->bit_rate,
+ AV_TIME_BASE));
+ }
+ }
+ if (max_dts - min_dts > 2 * AV_TIME_BASE ||
+ max_buffer > 1024 * 1024 * 8 * 8) {
+ av_free(idx);
+ return 1;
+ }
+ }
+ av_free(idx);
+ return 0;
+}
+
+static int guess_ni_flag(AVFormatContext *s)
+{
+ int i;
+ int64_t last_start = 0;
+ int64_t first_end = INT64_MAX;
+ int64_t oldpos = avio_tell(s->pb);
+
+ for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
- int n= st->nb_index_entries;
+ int n = st->nb_index_entries;
unsigned int size;
- if(n <= 0)
+ if (n <= 0)
continue;
- if(n >= 2){
- int64_t pos= st->index_entries[0].pos;
- url_fseek(s->pb, pos + 4, SEEK_SET);
- size= get_le32(s->pb);
- if(pos + size > st->index_entries[1].pos)
- last_start= INT64_MAX;
+ if (n >= 2) {
+ int64_t pos = st->index_entries[0].pos;
+ avio_seek(s->pb, pos + 4, SEEK_SET);
+ size = avio_rl32(s->pb);
+ if (pos + size > st->index_entries[1].pos)
+ last_start = INT64_MAX;
}
- if(st->index_entries[0].pos > last_start)
- last_start= st->index_entries[0].pos;
- if(st->index_entries[n-1].pos < first_end)
- first_end= st->index_entries[n-1].pos;
+ if (st->index_entries[0].pos > last_start)
+ last_start = st->index_entries[0].pos;
+ if (st->index_entries[n - 1].pos < first_end)
+ first_end = st->index_entries[n - 1].pos;
}
- url_fseek(s->pb, oldpos, SEEK_SET);
- return last_start > first_end;
+ avio_seek(s->pb, oldpos, SEEK_SET);
+
+ if (last_start > first_end)
+ return 1;
+
+ return check_stream_max_drift(s);
}
static int avi_load_index(AVFormatContext *s)
{
AVIContext *avi = s->priv_data;
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
uint32_t tag, size;
- int64_t pos= url_ftell(pb);
- int ret = -1;
+ int64_t pos = avio_tell(pb);
+ int ret = -1;
- if (url_fseek(pb, avi->movi_end, SEEK_SET) < 0)
+ if (avio_seek(pb, avi->movi_end, SEEK_SET) < 0)
goto the_end; // maybe truncated file
-#ifdef DEBUG_SEEK
- printf("movi_end=0x%"PRIx64"\n", avi->movi_end);
-#endif
- for(;;) {
- if (url_feof(pb))
+ av_log(s, AV_LOG_TRACE, "movi_end=0x%"PRIx64"\n", avi->movi_end);
+ for (;;) {
+ if (pb->eof_reached)
break;
- tag = get_le32(pb);
- size = get_le32(pb);
-#ifdef DEBUG_SEEK
- printf("tag=%c%c%c%c size=0x%x\n",
- tag & 0xff,
- (tag >> 8) & 0xff,
- (tag >> 16) & 0xff,
- (tag >> 24) & 0xff,
- size);
-#endif
- switch(tag) {
- case MKTAG('i', 'd', 'x', '1'):
- if (avi_read_idx1(s, size) < 0)
- goto skip;
+ tag = avio_rl32(pb);
+ size = avio_rl32(pb);
+ av_log(s, AV_LOG_TRACE, "tag=%c%c%c%c size=0x%x\n",
+ tag & 0xff,
+ (tag >> 8) & 0xff,
+ (tag >> 16) & 0xff,
+ (tag >> 24) & 0xff,
+ size);
+
+ if (tag == MKTAG('i', 'd', 'x', '1') &&
+ avi_read_idx1(s, size) >= 0) {
ret = 0;
- goto the_end;
- break;
- default:
- skip:
- size += (size & 1);
- if (url_fseek(pb, size, SEEK_CUR) < 0)
- goto the_end; // something is wrong here
break;
}
+
+ size += (size & 1);
+ if (avio_skip(pb, size) < 0)
+ break; // something is wrong here
}
- the_end:
- url_fseek(pb, pos, SEEK_SET);
+
+the_end:
+ avio_seek(pb, pos, SEEK_SET);
return ret;
}
-static int avi_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
+static void seek_subtitle(AVStream *st, AVStream *st2, int64_t timestamp)
+{
+ AVIStream *ast2 = st2->priv_data;
+ int64_t ts2 = av_rescale_q(timestamp, st->time_base, st2->time_base);
+ av_packet_unref(&ast2->sub_pkt);
+ if (avformat_seek_file(ast2->sub_ctx, 0, INT64_MIN, ts2, ts2, 0) >= 0 ||
+ avformat_seek_file(ast2->sub_ctx, 0, ts2, ts2, INT64_MAX, 0) >= 0)
+ ff_read_packet(ast2->sub_ctx, &ast2->sub_pkt);
+}
+
+static int avi_read_seek(AVFormatContext *s, int stream_index,
+ int64_t timestamp, int flags)
{
AVIContext *avi = s->priv_data;
AVStream *st;
int64_t pos;
AVIStream *ast;
+ /* Does not matter which stream is requested dv in avi has the
+ * stream information in the first video stream.
+ */
+ if (avi->dv_demux)
+ stream_index = 0;
+
if (!avi->index_loaded) {
/* we only load the index on demand */
avi_load_index(s);
avi->index_loaded = 1;
}
- assert(stream_index>= 0);
- st = s->streams[stream_index];
- ast= st->priv_data;
- index= av_index_search_timestamp(st, timestamp * FFMAX(ast->sample_size, 1), flags);
- if(index<0)
- return -1;
+ st = s->streams[stream_index];
+ ast = st->priv_data;
+ index = av_index_search_timestamp(st,
+ timestamp * FFMAX(ast->sample_size, 1),
+ flags);
+ if (index < 0)
+ return AVERROR_INVALIDDATA;
/* find the position */
- pos = st->index_entries[index].pos;
+ pos = st->index_entries[index].pos;
timestamp = st->index_entries[index].timestamp / FFMAX(ast->sample_size, 1);
-// av_log(s, AV_LOG_DEBUG, "XX %"PRId64" %d %"PRId64"\n", timestamp, index, st->index_entries[index].timestamp);
+ av_log(s, AV_LOG_TRACE, "XX %"PRId64" %d %"PRId64"\n",
+ timestamp, index, st->index_entries[index].timestamp);
if (CONFIG_DV_DEMUXER && avi->dv_demux) {
/* One and only one real stream for DV in AVI, and it has video */
/* offsets. Calling with other stream indexes should have failed */
/* the av_index_search_timestamp call above. */
- assert(stream_index == 0);
/* Feed the DV video stream version of the timestamp to the */
/* DV demux so it can synthesize correct timestamps. */
- dv_offset_reset(avi->dv_demux, timestamp);
+ ff_dv_offset_reset(avi->dv_demux, timestamp);
- url_fseek(s->pb, pos, SEEK_SET);
- avi->stream_index= -1;
+ avio_seek(s->pb, pos, SEEK_SET);
+ avi->stream_index = -1;
return 0;
}
- for(i = 0; i < s->nb_streams; i++) {
- AVStream *st2 = s->streams[i];
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st2 = s->streams[i];
AVIStream *ast2 = st2->priv_data;
- ast2->packet_size=
- ast2->remaining= 0;
+ ast2->packet_size =
+ ast2->remaining = 0;
+
+ if (ast2->sub_ctx) {
+ seek_subtitle(st, st2, timestamp);
+ continue;
+ }
if (st2->nb_index_entries <= 0)
continue;
// assert(st2->codec->block_align);
- assert((int64_t)st2->time_base.num*ast2->rate == (int64_t)st2->time_base.den*ast2->scale);
- index = av_index_search_timestamp(
- st2,
- av_rescale_q(timestamp, st->time_base, st2->time_base) * FFMAX(ast2->sample_size, 1),
- flags | AVSEEK_FLAG_BACKWARD);
- if(index<0)
- index=0;
-
- if(!avi->non_interleaved){
- while(index>0 && st2->index_entries[index].pos > pos)
+ assert((int64_t)st2->time_base.num * ast2->rate ==
+ (int64_t)st2->time_base.den * ast2->scale);
+ index = av_index_search_timestamp(st2,
+ av_rescale_q(timestamp,
+ st->time_base,
+ st2->time_base) *
+ FFMAX(ast2->sample_size, 1),
+ flags | AVSEEK_FLAG_BACKWARD);
+ if (index < 0)
+ index = 0;
+
+ if (!avi->non_interleaved) {
+ while (index > 0 && st2->index_entries[index].pos > pos)
index--;
- while(index+1 < st2->nb_index_entries && st2->index_entries[index].pos < pos)
+ while (index + 1 < st2->nb_index_entries &&
+ st2->index_entries[index].pos < pos)
index++;
}
-// av_log(s, AV_LOG_DEBUG, "%"PRId64" %d %"PRId64"\n", timestamp, index, st2->index_entries[index].timestamp);
+ av_log(s, AV_LOG_TRACE, "%"PRId64" %d %"PRId64"\n",
+ timestamp, index, st2->index_entries[index].timestamp);
/* extract the current frame number */
ast2->frame_offset = st2->index_entries[index].timestamp;
}
/* do the seek */
- url_fseek(s->pb, pos, SEEK_SET);
- avi->stream_index= -1;
+ avio_seek(s->pb, pos, SEEK_SET);
+ avi->stream_index = -1;
return 0;
}
int i;
AVIContext *avi = s->priv_data;
- for(i=0;i<s->nb_streams;i++) {
- AVStream *st = s->streams[i];
- av_free(st->codec->palctrl);
+ for (i = 0; i < s->nb_streams; i++) {
+ AVStream *st = s->streams[i];
+ AVIStream *ast = st->priv_data;
+ if (ast) {
+ if (ast->sub_ctx) {
+ av_freep(&ast->sub_ctx->pb);
+ avformat_close_input(&ast->sub_ctx);
+ }
+ av_free(ast->sub_buffer);
+ av_packet_unref(&ast->sub_pkt);
+ }
}
- if (avi->dv_demux)
- av_free(avi->dv_demux);
+ av_free(avi->dv_demux);
return 0;
}
int i;
/* check file header */
- for(i=0; avi_headers[i][0]; i++)
- if(!memcmp(p->buf , avi_headers[i] , 4) &&
- !memcmp(p->buf+8, avi_headers[i]+4, 4))
+ for (i = 0; avi_headers[i][0]; i++)
+ if (!memcmp(p->buf, avi_headers[i], 4) &&
+ !memcmp(p->buf + 8, avi_headers[i] + 4, 4))
return AVPROBE_SCORE_MAX;
return 0;
}
-AVInputFormat avi_demuxer = {
- "avi",
- NULL_IF_CONFIG_SMALL("AVI format"),
- sizeof(AVIContext),
- avi_probe,
- avi_read_header,
- avi_read_packet,
- avi_read_close,
- avi_read_seek,
- .metadata_conv = ff_avi_metadata_conv,
+AVInputFormat ff_avi_demuxer = {
+ .name = "avi",
+ .long_name = NULL_IF_CONFIG_SMALL("AVI (Audio Video Interleaved)"),
+ .priv_data_size = sizeof(AVIContext),
+ .extensions = "avi",
+ .read_probe = avi_probe,
+ .read_header = avi_read_header,
+ .read_packet = avi_read_packet,
+ .read_close = avi_read_close,
+ .read_seek = avi_read_seek,
};
projects / ffmpeg / blobdiff