Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

31_ASF_compatibility_with_WMP_and_add_index.patch by (Calcium | calcium nurs or jp)

Browse Source 
Originally committed as revision 4073 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Calcium 20 years ago committed by Michael Niedermayer
parent c64d476ccd
commit 982e53fe44
3 changed files with 134 additions and 21 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 131
      libavformat/asf-enc.c
  2. 22
      libavformat/asf.h
  3. 2
      tests/libav.regression.ref

131
libavformat/asf-enc.c
Unescape View File

@ -25,6 +25,10 @@
#ifdef CONFIG_ENCODERS
#define ASF_INDEXED_INTERVAL 10000000
#define ASF_INDEX_BLOCK 600
#define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
#define ASF_PACKET_ERROR_CORRECTION_FLAGS (\
ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
@ -185,6 +189,8 @@
static int preroll_time = 2000;
static const uint8_t error_spread_ADPCM_G726[] = { 0x01, 0x90, 0x01, 0x90, 0x01, 0x01, 0x00, 0x00 };
static void put_guid(ByteIOContext *s, const GUID *g)
{
int i;
@ -328,37 +334,47 @@ static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data
/* title and other infos */
if (has_title) {
hpos = put_header(pb, &comment_header);
put_le16(pb, 2 * (strlen(s->title) + 1));
put_le16(pb, 2 * (strlen(s->author) + 1));
put_le16(pb, 2 * (strlen(s->copyright) + 1));
put_le16(pb, 2 * (strlen(s->comment) + 1));
if ( s->title[0] ) { put_le16(pb, 2 * (strlen(s->title ) + 1)); } else { put_le16(pb, 0); }
if ( s->author[0] ) { put_le16(pb, 2 * (strlen(s->author ) + 1)); } else { put_le16(pb, 0); }
if ( s->copyright[0] ) { put_le16(pb, 2 * (strlen(s->copyright) + 1)); } else { put_le16(pb, 0); }
if ( s->comment[0] ) { put_le16(pb, 2 * (strlen(s->comment ) + 1)); } else { put_le16(pb, 0); }
put_le16(pb, 0);
put_str16_nolen(pb, s->title);
put_str16_nolen(pb, s->author);
put_str16_nolen(pb, s->copyright);
put_str16_nolen(pb, s->comment);
if ( s->title[0] ) put_str16_nolen(pb, s->title);
if ( s->author[0] ) put_str16_nolen(pb, s->author);
if ( s->copyright[0] ) put_str16_nolen(pb, s->copyright);
if ( s->comment[0] ) put_str16_nolen(pb, s->comment);
end_header(pb, hpos);
}
/* stream headers */
for(n=0;n<s->nb_streams;n++) {
int64_t es_pos;
uint8_t *er_spr = NULL;
int er_spr_len = 0;
// ASFStream *stream = &asf->streams[n];
enc = &s->streams[n]->codec;
asf->streams[n].num = n + 1;
asf->streams[n].seq = 0;
if (enc->codec_type == CODEC_TYPE_AUDIO) {
if (enc->codec_id == CODEC_ID_ADPCM_G726) {
er_spr = (uint8_t *)error_spread_ADPCM_G726;
er_spr_len = sizeof(error_spread_ADPCM_G726);
}
}
switch(enc->codec_type) {
case CODEC_TYPE_AUDIO:
wav_extra_size = 0;
extra_size = 18 + wav_extra_size;
extra_size2 = 0;
extra_size2 = er_spr_len;
break;
default:
case CODEC_TYPE_VIDEO:
wav_extra_size = 0;
extra_size = 0x33;
wav_extra_size = enc->extradata_size;
extra_size = 0x33 + wav_extra_size;
extra_size2 = 0;
break;
}
@ -366,7 +382,11 @@ static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data
hpos = put_header(pb, &stream_header);
if (enc->codec_type == CODEC_TYPE_AUDIO) {
put_guid(pb, &audio_stream);
put_guid(pb, &audio_conceal_none);
if ((er_spr != NULL) && (er_spr_len != 0)) {
put_guid(pb, &audio_conceal_spread);
} else {
put_guid(pb, &video_conceal_none);
}
} else {
put_guid(pb, &video_stream);
put_guid(pb, &video_conceal_none);
@ -381,6 +401,10 @@ static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data
if (enc->codec_type == CODEC_TYPE_AUDIO) {
/* WAVEFORMATEX header */
int wavsize = put_wav_header(pb, enc);
if ((enc->codec_id != CODEC_ID_MP3) && (enc->codec_id != CODEC_ID_MP2) && (enc->codec_id != CODEC_ID_ADPCM_IMA_WAV) && (enc->extradata_size==0)) {
wavsize += 2;
put_le16(pb, 0);
}
if (wavsize < 0)
return -1;
@ -390,11 +414,14 @@ static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data
put_le32(pb, wavsize); /* wav header len */
url_fseek(pb, cur_pos, SEEK_SET);
}
/* ERROR Correction */
if ((er_spr != NULL) && (er_spr_len != 0))
put_buffer(pb, er_spr, er_spr_len);
} else {
put_le32(pb, enc->width);
put_le32(pb, enc->height);
put_byte(pb, 2); /* ??? */
put_le16(pb, 40); /* size */
put_le16(pb, 40 + enc->extradata_size); /* size */
/* BITMAPINFOHEADER header */
put_bmp_header(pb, enc, codec_bmp_tags, 1);
@ -474,6 +501,12 @@ static int asf_write_header(AVFormatContext *s)
asf->packet_size = PACKET_SIZE;
asf->nb_packets = 0;
asf->last_indexed_pts = 0;
asf->index_ptr = (ASFIndex*)av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK );
asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
asf->nb_index_count = 0;
asf->maximum_packet = 0;
if (asf_write_header1(s, 0, 50) < 0) {
//av_free(asf);
return -1;
@ -694,43 +727,99 @@ static int asf_write_packet(AVFormatContext *s, AVPacket *pkt)
ASFStream *stream;
int64_t duration;
AVCodecContext *codec;
int64_t packet_st,pts;
int start_sec,i;
codec = &s->streams[pkt->stream_index]->codec;
stream = &asf->streams[pkt->stream_index];
//XXX /FIXME use duration from AVPacket
if (codec->codec_type == CODEC_TYPE_AUDIO) {
duration = (codec->frame_number * (int64_t)codec->frame_size * int64_t_C(10000000)) /
codec->sample_rate;
//XXX /FIXME use duration from AVPacket (quick hack by)
pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts;
if (pts == AV_NOPTS_VALUE) {
if (codec->codec_type == CODEC_TYPE_AUDIO) {
duration = (codec->frame_number * (int64_t)codec->frame_size * int64_t_C(10000000)) /
codec->sample_rate;
} else {
duration = av_rescale(codec->frame_number * (int64_t)codec->frame_rate_base, 10000000, codec->frame_rate);
}
} else {
duration = av_rescale(codec->frame_number * (int64_t)codec->frame_rate_base, 10000000, codec->frame_rate);
duration = pts * 10000;
}
if (duration > asf->duration)
asf->duration = duration;
packet_st = asf->nb_packets;
put_frame(s, stream, pkt->pts, pkt->data, pkt->size, pkt->flags);
/* check index */
if ((!asf->is_streamed) && (codec->codec_type == CODEC_TYPE_VIDEO) && (pkt->flags & PKT_FLAG_KEY)) {
start_sec = (int)(duration / int64_t_C(10000000));
if (start_sec != (int)(asf->last_indexed_pts / int64_t_C(10000000))) {
for(i=asf->nb_index_count;i<start_sec;i++) {
if (i>=asf->nb_index_memory_alloc) {
asf->nb_index_memory_alloc += ASF_INDEX_BLOCK;
asf->index_ptr = (ASFIndex*)av_realloc( asf->index_ptr, sizeof(ASFIndex) * asf->nb_index_memory_alloc );
}
// store
asf->index_ptr[i].packet_number = (uint32_t)packet_st;
asf->index_ptr[i].packet_count = (uint16_t)(asf->nb_packets-packet_st);
if (asf->maximum_packet < (uint16_t)(asf->nb_packets-packet_st))
asf->maximum_packet = (uint16_t)(asf->nb_packets-packet_st);
}
asf->nb_index_count = start_sec;
asf->last_indexed_pts = duration;
}
}
return 0;
}
//
static int asf_write_index(AVFormatContext *s, ASFIndex *index, uint16_t max, uint32_t count)
{
ByteIOContext *pb = &s->pb;
int i;
put_guid(pb, &simple_index_header);
put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count);
put_guid(pb, &my_guid);
put_le64(pb, ASF_INDEXED_INTERVAL);
put_le32(pb, max);
put_le32(pb, count);
for(i=0; i<count; i++) {
put_le32(pb, index[i].packet_number);
put_le16(pb, index[i].packet_count);
}
return 0;
}
static int asf_write_trailer(AVFormatContext *s)
{
ASFContext *asf = s->priv_data;
int64_t file_size;
int64_t file_size,data_size;
/* flush the current packet */
if (asf->pb.buf_ptr > asf->pb.buffer)
flush_packet(s);
/* write index */
data_size = url_ftell(&s->pb);
if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
}
put_flush_packet(&s->pb);
if (asf->is_streamed) {
put_chunk(s, 0x4524, 0, 0); /* end of stream */
} else {
/* rewrite an updated header */
file_size = url_ftell(&s->pb);
url_fseek(&s->pb, 0, SEEK_SET);
asf_write_header1(s, file_size, file_size - asf->data_offset);
asf_write_header1(s, file_size, data_size - asf->data_offset);
}
put_flush_packet(&s->pb);
av_free(asf->index_ptr);
return 0;
}
@ -749,6 +838,7 @@ AVOutputFormat asf_oformat = {
asf_write_header,
asf_write_packet,
asf_write_trailer,
.flags = AVFMT_GLOBALHEADER,
};
AVOutputFormat asf_stream_oformat = {
@ -766,5 +856,6 @@ AVOutputFormat asf_stream_oformat = {
asf_write_stream_header,
asf_write_packet,
asf_write_trailer,
.flags = AVFMT_GLOBALHEADER,
};
#endif //CONFIG_ENCODERS

22
libavformat/asf.h
Unescape View File

@ -71,6 +71,12 @@ typedef struct {
} ASFMainHeader;
typedef struct {
uint32_t packet_number;
uint16_t packet_count;
} ASFIndex;
typedef struct {
uint32_t seqno;
unsigned int packet_size;
@ -114,6 +120,14 @@ typedef struct {
int packet_pos;
int stream_index;
int64_t last_indexed_pts;
ASFIndex* index_ptr;
uint32_t nb_index_count;
uint32_t nb_index_memory_alloc;
uint16_t maximum_packet;
ASFStream* asf_st; /* currently decoded stream */
} ASFContext;
@ -139,6 +153,10 @@ static const GUID audio_conceal_none = {
0x20fb5700, 0x5b55, 0x11cf, { 0xa8, 0xfd, 0x00, 0x80, 0x5f, 0x5c, 0x44, 0x2b },
};
static const GUID audio_conceal_spread = {
0xBFC3CD50, 0x618F, 0x11CF, { 0x8B, 0xB2, 0x00, 0xAA, 0x00, 0xB4, 0xE2, 0x20 },
};
static const GUID video_stream = {
0xBC19EFC0, 0x5B4D, 0x11CF, { 0xA8, 0xFD, 0x00, 0x80, 0x5F, 0x5C, 0x44, 0x2B },
};
@ -175,6 +193,10 @@ static const GUID extended_content_header = {
0xD2D0A440, 0xE307, 0x11D2, { 0x97, 0xF0, 0x00, 0xA0, 0xC9, 0x5E, 0xA8, 0x50 },
};
static const GUID simple_index_header = {
0x33000890, 0xE5B1, 0x11CF, { 0x89, 0xF4, 0x00, 0xA0, 0xC9, 0x03, 0x49, 0xCB },
};
/* I am not a number !!! This GUID is the one found on the PC used to
generate the stream */
static const GUID my_guid = {

2
tests/libav.regression.ref
Unescape View File

@ -2,7 +2,7 @@ ffmpeg regression test
9f2252939564a3b735605be5e6575f04 *./data/b-libav.avi
342282 ./data/b-libav.avi
./data/b-libav.avi CRC=ccab3a27
c83444a0e8ef47b6af1d868d1bb21696 *./data/b-libav.asf
6f4dca897d9a009009798e434fe5f651 *./data/b-libav.asf
342967 ./data/b-libav.asf
./data/b-libav.asf CRC=41af1ed9
5240a23a9264bc6062d6739c70825ace *./data/b-libav.rm

Write Preview
Loading…
Cancel
Save