virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

Complete support for OpenDML AVIs and AVIs > 2Gb.

Browse Source 
Originally committed as revision 1814 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Roman Shaposhnik 2003-04-23 02:04:40 +00:00
parent 80097bbf71
commit e738cee9c4
6 changed files with 219 additions and 74 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
ffmpeg.c
View File

@ -1363,9 +1363,9 @@ static int av_encode(AVFormatContext **output_files,
/* no reencoding needed : output the packet directly */
/* force the input stream PTS */
//XXX/FIXME set keyframe flag from demuxer (or optionally from decoder)
memset(&avframe, 0, sizeof(AVFrame));
ost->st->codec.coded_frame= &avframe;
avframe.key_frame = pkt.flags & PKT_FLAG_KEY;
av_write_frame(os, ost->index, data_buf, data_size);
ost->st->codec.frame_number++;

1
libavformat/avi.h
View File

@ -7,6 +7,7 @@
#define AVIF_COPYRIGHTED 0x00020000
#define AVI_MAX_RIFF_SIZE 0x40000000LL
#define AVI_MASTER_INDEX_SIZE 256
offset_t start_tag(ByteIOContext *pb, const char *tag);
void end_tag(ByteIOContext *pb, offset_t start);

1
libavformat/avidec.c
View File

@ -368,6 +368,7 @@ pkt_init:
pkt->size = avi->buf_size;
pkt->destruct = __destruct_pkt;
pkt->stream_index = avi->stream_index;
pkt->flags |= PKT_FLAG_KEY; // FIXME: We really should read index for that
avi->stream_index = !avi->stream_index;
return 0;
}

287
libavformat/avienc.c
View File

@ -24,19 +24,35 @@
* - fill all fields if non streamed (nb_frames for example)
*/
typedef struct AVIIndex {
unsigned char tag[4];
typedef struct AVIIentry {
unsigned int flags, pos, len;
struct AVIIndex *next;
} AVIIentry;
#define AVI_INDEX_CLUSTER_SIZE 16384
typedef struct AVIIndex {
offset_t indx_start;
int entry;
int ents_allocated;
AVIIentry** cluster;
} AVIIndex;
typedef struct {
offset_t riff_start, movi_list, odml_list;
offset_t frames_hdr_all, frames_hdr_strm[MAX_STREAMS];
int audio_strm_length[MAX_STREAMS];
AVIIndex *first, *last;
int riff_id;
AVIIndex indexes[MAX_STREAMS];
} AVIContext;
static inline AVIIentry* avi_get_ientry(AVIIndex* idx, int ent_id)
{
int cl = ent_id / AVI_INDEX_CLUSTER_SIZE;
int id = ent_id % AVI_INDEX_CLUSTER_SIZE;
return &idx->cluster[cl][id];
}
offset_t start_tag(ByteIOContext *pb, const char *tag)
{
put_tag(pb, tag);
@ -240,6 +256,12 @@ static offset_t avi_start_new_riff(AVIContext *avi, ByteIOContext *pb,
const char* riff_tag, const char* list_tag)
{
offset_t loff;
int i;
avi->riff_id++;
for (i=0; i<MAX_STREAMS; i++)
avi->indexes[i].entry = 0;
avi->riff_start = start_tag(pb, "RIFF");
put_tag(pb, riff_tag);
loff = start_tag(pb, "LIST");
@ -247,6 +269,22 @@ static offset_t avi_start_new_riff(AVIContext *avi, ByteIOContext *pb,
return loff;
}
static unsigned char* avi_stream2fourcc(unsigned char* tag, int index,
enum CodecType type)
{
tag[0] = '0';
tag[1] = '0' + index;
if (type == CODEC_TYPE_VIDEO) {
tag[2] = 'd';
tag[3] = 'c';
} else {
tag[2] = 'w';
tag[3] = 'b';
}
tag[4] = '\0';
return tag;
}
static int avi_write_header(AVFormatContext *s)
{
AVIContext *avi = s->priv_data;
@ -256,6 +294,7 @@ static int avi_write_header(AVFormatContext *s)
offset_t list1, list2, strh, strf;
/* header list */
avi->riff_id = 0;
list1 = avi_start_new_riff(avi, pb, "AVI ", "hdrl");
/* avi header */
@ -374,23 +413,46 @@ static int avi_write_header(AVFormatContext *s)
av_abort();
}
end_tag(pb, strf);
if (!url_is_streamed(pb)) {
unsigned char tag[5];
/* Starting to lay out AVI OpenDML master index.
* We want to make it JUNK entry for now, since we'd
* like to get away without making AVI and OpenDML one
* for compatibility reasons.
*/
avi->indexes[i].entry = avi->indexes[i].ents_allocated = 0;
avi->indexes[i].indx_start = start_tag(pb, "JUNK");
put_le16(pb, 4); /* wLongsPerEntry */
put_byte(pb, 0); /* bIndexSubType (0 == frame index) */
put_byte(pb, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
put_le32(pb, 0); /* nEntriesInUse (will fill out later on) */
put_tag(pb, avi_stream2fourcc(&tag[0], i, stream->codec_type));
/* dwChunkId */
put_le64(pb, 0); /* dwReserved[3]
put_le32(pb, 0); Must be 0. */
url_fskip(pb, AVI_MASTER_INDEX_SIZE * 4 * 4);
end_tag(pb, avi->indexes[i].indx_start);
}
end_tag(pb, list2);
}
/* AVI could become an OpenDML one, if it grows beyond 2Gb range */
avi->odml_list = start_tag(pb, "JUNK");
put_tag(pb, "odml");
put_tag(pb, "dmlh");
put_le32(pb, 248);
for (i = 0; i < 248; i+= 4)
put_le32(pb, 0);
end_tag(pb, avi->odml_list);
if (!url_is_streamed(pb)) {
/* AVI could become an OpenDML one, if it grows beyond 2Gb range */
avi->odml_list = start_tag(pb, "JUNK");
put_tag(pb, "odml");
put_tag(pb, "dmlh");
put_le32(pb, 248);
for (i = 0; i < 248; i+= 4)
put_le32(pb, 0);
end_tag(pb, avi->odml_list);
}
end_tag(pb, list1);
avi->movi_list = start_tag(pb, "LIST");
avi->first = NULL;
avi->last = NULL;
put_tag(pb, "movi");
put_flush_packet(pb);
@ -398,34 +460,104 @@ static int avi_write_header(AVFormatContext *s)
return 0;
}
static int avi_finish_riff1(AVFormatContext *s)
static int avi_write_ix(AVFormatContext *s)
{
ByteIOContext *pb = &s->pb;
AVIContext *avi = s->priv_data;
unsigned char tag[5];
unsigned char ix_tag[] = "ix00";
int i, j;
if (avi->riff_id > AVI_MASTER_INDEX_SIZE)
return -1;
for (i=0;i<s->nb_streams;i++) {
offset_t ix, pos;
avi_stream2fourcc(&tag[0], i, s->streams[i]->codec.codec_type);
ix_tag[3] = '0' + i;
/* Writing AVI OpenDML leaf index chunk */
ix = url_ftell(pb);
put_tag(pb, &ix_tag[0]); /* ix?? */
put_le32(pb, avi->indexes[i].entry * 8 + 24);
/* chunk size */
put_le16(pb, 2); /* wLongsPerEntry */
put_byte(pb, 0); /* bIndexSubType (0 == frame index) */
put_byte(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
put_le32(pb, avi->indexes[i].entry);
/* nEntriesInUse */
put_tag(pb, &tag[0]); /* dwChunkId */
put_le64(pb, avi->movi_list);/* qwBaseOffset */
put_le32(pb, 0); /* dwReserved_3 (must be 0) */
for (j=0; j<avi->indexes[i].entry; j++) {
AVIIentry* ie = avi_get_ientry(&avi->indexes[i], j);
put_le32(pb, ie->pos + 8);
put_le32(pb, ((uint32_t)ie->len & ~0x80000000) |
(ie->flags & 0x10 ? 0 : 0x80000000));
}
put_flush_packet(pb);
pos = url_ftell(pb);
/* Updating one entry in the AVI OpenDML master index */
url_fseek(pb, avi->indexes[i].indx_start - 8, SEEK_SET);
put_tag(pb, "indx"); /* enabling this entry */
url_fskip(pb, 8);
put_le32(pb, avi->riff_id); /* nEntriesInUse */
url_fskip(pb, 16*avi->riff_id);
put_le64(pb, ix); /* qwOffset */
put_le32(pb, pos - ix); /* dwSize */
put_le32(pb, avi->indexes[i].entry); /* dwDuration */
url_fseek(pb, pos, SEEK_SET);
}
return 0;
}
static int avi_write_idx1(AVFormatContext *s)
{
ByteIOContext *pb = &s->pb;
AVIContext *avi = s->priv_data;
offset_t file_size, idx_chunk;
int n, nb_frames, au_byterate, au_ssize, au_scale;
int i, n, nb_frames, au_byterate, au_ssize, au_scale;
AVCodecContext *stream;
AVIIndex *idx;
unsigned char tag[5];
if (!url_is_streamed(pb)) {
end_tag(pb, avi->movi_list);
AVIIentry* ie, *tie;
int entry[MAX_STREAMS];
int empty, stream_id;
idx_chunk = start_tag(pb, "idx1");
idx = avi->first;
while (idx != NULL) {
put_buffer(pb, idx->tag, 4);
put_le32(pb, idx->flags);
put_le32(pb, idx->pos);
put_le32(pb, idx->len);
idx = idx->next;
}
end_tag(pb, idx_chunk);
/* update file size */
file_size = url_ftell(pb);
end_tag(pb, avi->riff_start);
idx_chunk = start_tag(pb, "idx1");
memset(&entry[0], 0, sizeof(entry));
do {
empty = 1;
for (i=0; i<s->nb_streams; i++) {
if (avi->indexes[i].entry <= entry[i])
continue;
tie = avi_get_ientry(&avi->indexes[i], entry[i]);
if (empty || tie->pos < ie->pos) {
ie = tie;
stream_id = i;
}
empty = 0;
}
if (!empty) {
avi_stream2fourcc(&tag[0], stream_id,
s->streams[stream_id]->codec.codec_type);
put_tag(pb, &tag[0]);
put_le32(pb, ie->flags);
put_le32(pb, ie->pos);
put_le32(pb, ie->len);
entry[stream_id]++;
}
} while (!empty);
end_tag(pb, idx_chunk);
/* Fill in frame/sample counters */
file_size = url_ftell(pb);
nb_frames = 0;
for(n=0;n<s->nb_streams;n++) {
if (avi->frames_hdr_strm[n] != 0) {
@ -460,49 +592,47 @@ static int avi_write_packet(AVFormatContext *s, int stream_index,
{
AVIContext *avi = s->priv_data;
ByteIOContext *pb = &s->pb;
AVIIndex *idx;
unsigned char tag[5];
unsigned int flags;
AVCodecContext *enc;
if (url_ftell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE) {
if (avi->riff_start != 8) {
end_tag(pb, avi->movi_list);
end_tag(pb, avi->riff_start);
} else
avi_finish_riff1(s);
avi_write_ix(s);
end_tag(pb, avi->movi_list);
if (avi->riff_id == 1)
avi_write_idx1(s);
end_tag(pb, avi->riff_start);
avi->movi_list = avi_start_new_riff(avi, pb, "AVIX", "movi");
}
enc = &s->streams[stream_index]->codec;
tag[0] = '0';
tag[1] = '0' + stream_index;
if (enc->codec_type == CODEC_TYPE_VIDEO) {
tag[2] = 'd';
tag[3] = 'c';
flags = enc->coded_frame->key_frame ? 0x10 : 0x00;
} else {
tag[2] = 'w';
tag[3] = 'b';
flags = 0x10;
}
if (enc->codec_type == CODEC_TYPE_AUDIO)
avi_stream2fourcc(&tag[0], stream_index, enc->codec_type);
if (enc->codec_type == CODEC_TYPE_AUDIO) {
avi->audio_strm_length[stream_index] += size;
flags = 0x10;
} else
flags = enc->coded_frame->key_frame ? 0x10 : 0x00;
if (!url_is_streamed(&s->pb)) {
idx = av_malloc(sizeof(AVIIndex));
memcpy(idx->tag, tag, 4);
idx->flags = flags;
idx->pos = url_ftell(pb) - avi->movi_list;
idx->len = size;
idx->next = NULL;
if (!avi->last)
avi->first = idx;
else
avi->last->next = idx;
avi->last = idx;
AVIIndex* idx = &avi->indexes[stream_index];
int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
if (idx->ents_allocated <= idx->entry) {
idx->cluster = av_realloc(idx->cluster, (cl+1)*sizeof(void*));
if (!idx->cluster)
return -1;
idx->cluster[cl] = av_malloc(AVI_INDEX_CLUSTER_SIZE*sizeof(AVIIentry));
if (!idx->cluster[cl])
return -1;
idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;
}
idx->cluster[cl][id].flags = flags;
idx->cluster[cl][id].pos = url_ftell(pb) - avi->movi_list;
idx->cluster[cl][id].len = size;
idx->entry++;
}
put_buffer(pb, tag, 4);
@ -520,11 +650,18 @@ static int avi_write_trailer(AVFormatContext *s)
AVIContext *avi = s->priv_data;
ByteIOContext *pb = &s->pb;
int res = 0;
int i, j, n, nb_frames;
offset_t file_size;
if (avi->riff_id == 1) {
end_tag(pb, avi->movi_list);
res = avi_write_idx1(s);
end_tag(pb, avi->riff_start);
} else {
avi_write_ix(s);
end_tag(pb, avi->movi_list);
end_tag(pb, avi->riff_start);
if (avi->riff_start != 8) {
int n, nb_frames;
offset_t file_size;
file_size = url_ftell(pb);
url_fseek(pb, avi->odml_list - 8, SEEK_SET);
put_tag(pb, "LIST"); /* Making this AVI OpenDML one */
@ -542,14 +679,18 @@ static int avi_write_trailer(AVFormatContext *s)
}
}
put_le32(pb, nb_frames);
end_tag(pb, avi->movi_list);
end_tag(pb, avi->riff_start);
url_fseek(pb, file_size, SEEK_SET);
} else
res = avi_finish_riff1(s);
}
put_flush_packet(pb);
for (i=0; i<MAX_STREAMS; i++) {
for (j=0; j<avi->indexes[i].ents_allocated/AVI_INDEX_CLUSTER_SIZE; j++)
av_free(avi->indexes[i].cluster[j]);
av_free(avi->indexes[i].cluster);
avi->indexes[i].cluster = NULL;
avi->indexes[i].ents_allocated = avi->indexes[i].entry = 0;
}
return res;
}

1
libavformat/dv.c
View File

@ -83,6 +83,7 @@ static int dv_read_packet(AVFormatContext *s, AVPacket *pkt)
pkt->data = c->buf;
pkt->size = c->size;
pkt->stream_index = c->is_audio;
pkt->flags |= PKT_FLAG_KEY;
c->is_audio = !c->is_audio;
return c->size;

1
libavformat/dv1394.c
View File

@ -184,6 +184,7 @@ static inline int __get_frame(struct dv1394_data *dv, AVPacket *pkt)
pkt->size = dv->frame_size;
pkt->pts = dv->pts;
pkt->stream_index = dv->stream;
pkt->flags |= PKT_FLAG_KEY;
dv->stream ^= 1;