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/* |
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* ASF muxer |
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* Copyright (c) 2000, 2001 Fabrice Bellard |
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* |
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* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* 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 |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/
#include "avformat.h" |
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#include "metadata.h" |
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#include "riff.h" |
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#include "asf.h"
#undef NDEBUG
#include <assert.h>
|
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|
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#define ASF_INDEXED_INTERVAL 10000000
#define ASF_INDEX_BLOCK 600 |
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|
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#define ASF_PACKET_ERROR_CORRECTION_DATA_SIZE 0x2
#define ASF_PACKET_ERROR_CORRECTION_FLAGS (\ |
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ASF_PACKET_FLAG_ERROR_CORRECTION_PRESENT | \
ASF_PACKET_ERROR_CORRECTION_DATA_SIZE\
) |
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#if (ASF_PACKET_ERROR_CORRECTION_FLAGS != 0)
# define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 1
#else
# define ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE 0
#endif
#define ASF_PPI_PROPERTY_FLAGS (\ |
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ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE | \
ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD | \
ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE | \
ASF_PL_FLAG_STREAM_NUMBER_LENGTH_FIELD_IS_BYTE \
) |
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#define ASF_PPI_LENGTH_TYPE_FLAGS 0
#define ASF_PAYLOAD_FLAGS ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD
#if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
# define ASF_PPI_SEQUENCE_FIELD_SIZE 1
#endif
#if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
# define ASF_PPI_SEQUENCE_FIELD_SIZE 2
#endif
#if (ASF_PPI_FLAG_SEQUENCE_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_SEQUENCE_FIELD_SIZE))
# define ASF_PPI_SEQUENCE_FIELD_SIZE 4
#endif
#ifndef ASF_PPI_SEQUENCE_FIELD_SIZE
# define ASF_PPI_SEQUENCE_FIELD_SIZE 0
#endif
#if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
# define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 1
#endif
#if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
# define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 2
#endif
#if (ASF_PPI_FLAG_PACKET_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PACKET_LENGTH_FIELD_SIZE))
# define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 4
#endif
#ifndef ASF_PPI_PACKET_LENGTH_FIELD_SIZE
# define ASF_PPI_PACKET_LENGTH_FIELD_SIZE 0
#endif
#if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
# define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 1
#endif
#if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
# define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 2
#endif
#if (ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_DWORD == (ASF_PPI_LENGTH_TYPE_FLAGS & ASF_PPI_MASK_PADDING_LENGTH_FIELD_SIZE))
# define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 4
#endif
#ifndef ASF_PPI_PADDING_LENGTH_FIELD_SIZE
# define ASF_PPI_PADDING_LENGTH_FIELD_SIZE 0
#endif
#if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
# define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 1
#endif
#if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
# define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 2
#endif
#if (ASF_PL_FLAG_REPLICATED_DATA_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_REPLICATED_DATA_LENGTH_FIELD_SIZE))
# define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 4
#endif
#ifndef ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE
# define ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE 0
#endif
#if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
# define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 1
#endif
#if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
# define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 2
#endif
#if (ASF_PL_FLAG_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_OFFSET_INTO_MEDIA_OBJECT_LENGTH_FIELD_SIZE))
# define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 4
#endif
#ifndef ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE
# define ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE 0
#endif
#if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_BYTE == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
# define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 1
#endif
#if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_WORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
# define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 2
#endif
#if (ASF_PL_FLAG_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_IS_DWORD == (ASF_PPI_PROPERTY_FLAGS & ASF_PL_MASK_MEDIA_OBJECT_NUMBER_LENGTH_FIELD_SIZE))
# define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 4
#endif
#ifndef ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE
# define ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE 0
#endif
#if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_BYTE == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
# define ASF_PAYLOAD_LENGTH_FIELD_SIZE 1
#endif
#if (ASF_PL_FLAG_PAYLOAD_LENGTH_FIELD_IS_WORD == (ASF_PAYLOAD_FLAGS & ASF_PL_MASK_PAYLOAD_LENGTH_FIELD_SIZE))
# define ASF_PAYLOAD_LENGTH_FIELD_SIZE 2
#endif
#ifndef ASF_PAYLOAD_LENGTH_FIELD_SIZE
# define ASF_PAYLOAD_LENGTH_FIELD_SIZE 0
#endif
#define PACKET_HEADER_MIN_SIZE (\ |
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ASF_PACKET_ERROR_CORRECTION_FLAGS_FIELD_SIZE + \
ASF_PACKET_ERROR_CORRECTION_DATA_SIZE + \
1 + /*Length Type Flags*/ \
1 + /*Property Flags*/ \
ASF_PPI_PACKET_LENGTH_FIELD_SIZE + \
ASF_PPI_SEQUENCE_FIELD_SIZE + \
ASF_PPI_PADDING_LENGTH_FIELD_SIZE + \
4 + /*Send Time Field*/ \
2 /*Duration Field*/ \
) |
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// Replicated Data shall be at least 8 bytes long.
#define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08
#define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD (\ |
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1 + /*Stream Number*/ \
ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
ASF_PAYLOAD_REPLICATED_DATA_LENGTH \
) |
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|
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#define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS (\ |
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1 + /*Stream Number*/ \
ASF_PAYLOAD_MEDIA_OBJECT_NUMBER_FIELD_SIZE + \
ASF_PAYLOAD_OFFSET_INTO_MEDIA_OBJECT_FIELD_SIZE + \
ASF_PAYLOAD_REPLICATED_DATA_LENGTH_FIELD_SIZE + \
ASF_PAYLOAD_REPLICATED_DATA_LENGTH + \
ASF_PAYLOAD_LENGTH_FIELD_SIZE \
) |
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#define SINGLE_PAYLOAD_DATA_LENGTH (\ |
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PACKET_SIZE - \
PACKET_HEADER_MIN_SIZE - \
PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \
) |
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#define MULTI_PAYLOAD_CONSTANT (\ |
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PACKET_SIZE - \
PACKET_HEADER_MIN_SIZE - \
1 - /*Payload Flags*/ \
2*PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \
) |
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|
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static const AVCodecTag codec_asf_bmp_tags[] = {
{ CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') },
{ CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') },
{ CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') },
{ CODEC_ID_NONE, 0 },
};
|
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#define PREROLL_TIME 3100 |
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|
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static void put_guid(ByteIOContext *s, const GUID *g)
{ |
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assert(sizeof(*g) == 16); |
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put_buffer(s, *g, sizeof(*g)); |
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}
|
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static void put_str16_nolen(ByteIOContext *s, const char *tag); |
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static void put_str16(ByteIOContext *s, const char *tag)
{
put_le16(s,strlen(tag) + 1); |
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put_str16_nolen(s, tag); |
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}
static void put_str16_nolen(ByteIOContext *s, const char *tag)
{
int c;
|
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do{ |
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c = (uint8_t)*tag++;
put_le16(s, c); |
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}while(c); |
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}
static int64_t put_header(ByteIOContext *pb, const GUID *g)
{
int64_t pos;
pos = url_ftell(pb);
put_guid(pb, g);
put_le64(pb, 24);
return pos;
}
/* update header size */
static void end_header(ByteIOContext *pb, int64_t pos)
{
int64_t pos1;
pos1 = url_ftell(pb);
url_fseek(pb, pos + 16, SEEK_SET);
put_le64(pb, pos1 - pos);
url_fseek(pb, pos1, SEEK_SET);
}
/* write an asf chunk (only used in streaming case) */
static void put_chunk(AVFormatContext *s, int type, int payload_length, int flags)
{
ASFContext *asf = s->priv_data; |
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ByteIOContext *pb = s->pb; |
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int length;
length = payload_length + 8;
put_le16(pb, type); |
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put_le16(pb, length); //size
put_le32(pb, asf->seqno);//sequence number |
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put_le16(pb, flags); /* unknown bytes */ |
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put_le16(pb, length); //size_confirm |
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asf->seqno++;
}
/* convert from unix to windows time */
static int64_t unix_to_file_time(int ti)
{
int64_t t;
|
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t = ti * INT64_C(10000000);
t += INT64_C(116444736000000000); |
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return t;
}
/* write the header (used two times if non streamed) */
static int asf_write_header1(AVFormatContext *s, int64_t file_size, int64_t data_chunk_size)
{
ASFContext *asf = s->priv_data; |
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ByteIOContext *pb = s->pb; |
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AVMetadataTag *title, *author, *copyright, *comment; |
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int header_size, n, extra_size, extra_size2, wav_extra_size, file_time;
int has_title; |
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int metadata_count; |
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AVCodecContext *enc;
int64_t header_offset, cur_pos, hpos;
int bit_rate; |
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int64_t duration; |
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|
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title = av_metadata_get(s->metadata, "title" , NULL, 0);
author = av_metadata_get(s->metadata, "author" , NULL, 0);
copyright = av_metadata_get(s->metadata, "copyright", NULL, 0);
comment = av_metadata_get(s->metadata, "comment" , NULL, 0);
|
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duration = asf->duration + PREROLL_TIME * 10000; |
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has_title = title || author || copyright || comment; |
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metadata_count = s->metadata ? s->metadata->count : 0; |
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bit_rate = 0;
for(n=0;n<s->nb_streams;n++) { |
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enc = s->streams[n]->codec; |
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|
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av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */
|
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bit_rate += enc->bit_rate;
}
if (asf->is_streamed) {
put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */
}
|
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put_guid(pb, &ff_asf_header); |
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put_le64(pb, -1); /* header length, will be patched after */ |
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put_le32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */ |
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put_byte(pb, 1); /* ??? */
put_byte(pb, 2); /* ??? */
/* file header */
header_offset = url_ftell(pb); |
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hpos = put_header(pb, &ff_asf_file_header);
put_guid(pb, &ff_asf_my_guid); |
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put_le64(pb, file_size);
file_time = 0;
put_le64(pb, unix_to_file_time(file_time));
put_le64(pb, asf->nb_packets); /* number of packets */ |
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put_le64(pb, duration); /* end time stamp (in 100ns units) */ |
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put_le64(pb, asf->duration); /* duration (in 100ns units) */ |
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put_le64(pb, PREROLL_TIME); /* start time stamp */ |
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put_le32(pb, (asf->is_streamed || url_is_streamed(pb)) ? 3 : 2); /* ??? */ |
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put_le32(pb, s->packet_size); /* packet size */
put_le32(pb, s->packet_size); /* packet size */ |
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put_le32(pb, bit_rate); /* Nominal data rate in bps */
end_header(pb, hpos);
/* unknown headers */ |
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hpos = put_header(pb, &ff_asf_head1_guid);
put_guid(pb, &ff_asf_head2_guid); |
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put_le32(pb, 6);
put_le16(pb, 0);
end_header(pb, hpos);
/* title and other infos */
if (has_title) { |
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hpos = put_header(pb, &ff_asf_comment_header); |
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put_le16(pb, title ? 2 * (strlen(title->value ) + 1) : 0);
put_le16(pb, author ? 2 * (strlen(author->value ) + 1) : 0);
put_le16(pb, copyright ? 2 * (strlen(copyright->value) + 1) : 0);
put_le16(pb, comment ? 2 * (strlen(comment->value ) + 1) : 0); |
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put_le16(pb, 0); |
300f24f3 |
if (title ) put_str16_nolen(pb, title->value );
if (author ) put_str16_nolen(pb, author->value );
if (copyright) put_str16_nolen(pb, copyright->value);
if (comment ) put_str16_nolen(pb, comment->value ); |
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end_header(pb, hpos);
} |
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if (metadata_count) {
AVMetadataTag *tag = NULL; |
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hpos = put_header(pb, &ff_asf_extended_content_header); |
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put_le16(pb, metadata_count);
while ((tag = av_metadata_get(s->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX))) {
put_le16(pb, 2*(strlen(tag->key) + 3) + 1);
put_le16(pb, 'W');
put_le16(pb, 'M');
put_le16(pb, '/');
put_str16_nolen(pb, tag->key);
put_le16(pb, 0);
put_le16(pb, 2*strlen(tag->value) + 1);
put_str16_nolen(pb, tag->value);
}
end_header(pb, hpos);
} |
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/* stream headers */
for(n=0;n<s->nb_streams;n++) {
int64_t es_pos;
// ASFStream *stream = &asf->streams[n];
|
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enc = s->streams[n]->codec; |
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asf->streams[n].num = n + 1;
asf->streams[n].seq = 0;
|
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|
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switch(enc->codec_type) {
case CODEC_TYPE_AUDIO:
wav_extra_size = 0;
extra_size = 18 + wav_extra_size; |
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extra_size2 = 8; |
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break;
default:
case CODEC_TYPE_VIDEO: |
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wav_extra_size = enc->extradata_size;
extra_size = 0x33 + wav_extra_size; |
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extra_size2 = 0;
break;
}
|
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hpos = put_header(pb, &ff_asf_stream_header); |
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if (enc->codec_type == CODEC_TYPE_AUDIO) { |
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put_guid(pb, &ff_asf_audio_stream);
put_guid(pb, &ff_asf_audio_conceal_spread); |
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} else { |
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put_guid(pb, &ff_asf_video_stream);
put_guid(pb, &ff_asf_video_conceal_none); |
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}
put_le64(pb, 0); /* ??? */
es_pos = url_ftell(pb);
put_le32(pb, extra_size); /* wav header len */
put_le32(pb, extra_size2); /* additional data len */
put_le16(pb, n + 1); /* stream number */
put_le32(pb, 0); /* ??? */
if (enc->codec_type == CODEC_TYPE_AUDIO) {
/* WAVEFORMATEX header */
int wavsize = put_wav_header(pb, enc); |
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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);
} |
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if (wavsize < 0)
return -1;
if (wavsize != extra_size) {
cur_pos = url_ftell(pb);
url_fseek(pb, es_pos, SEEK_SET);
put_le32(pb, wavsize); /* wav header len */
url_fseek(pb, cur_pos, SEEK_SET);
} |
982e53fe |
/* ERROR Correction */ |
1d7d9935 |
put_byte(pb, 0x01);
if(enc->codec_id == CODEC_ID_ADPCM_G726 || !enc->block_align){
put_le16(pb, 0x0190);
put_le16(pb, 0x0190);
}else{
put_le16(pb, enc->block_align);
put_le16(pb, enc->block_align);
}
put_le16(pb, 0x01);
put_byte(pb, 0x00); |
542993b0 |
} else {
put_le32(pb, enc->width);
put_le32(pb, enc->height);
put_byte(pb, 2); /* ??? */ |
982e53fe |
put_le16(pb, 40 + enc->extradata_size); /* size */ |
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/* BITMAPINFOHEADER header */
put_bmp_header(pb, enc, codec_bmp_tags, 1);
}
end_header(pb, hpos);
}
/* media comments */
|
17af0525 |
hpos = put_header(pb, &ff_asf_codec_comment_header);
put_guid(pb, &ff_asf_codec_comment1_header); |
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put_le32(pb, s->nb_streams);
for(n=0;n<s->nb_streams;n++) {
AVCodec *p;
|
01f4895c |
enc = s->streams[n]->codec; |
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p = avcodec_find_encoder(enc->codec_id);
|
7205395b |
if(enc->codec_type == CODEC_TYPE_AUDIO)
put_le16(pb, 2);
else if(enc->codec_type == CODEC_TYPE_VIDEO)
put_le16(pb, 1);
else
put_le16(pb, -1);
if(enc->codec_id == CODEC_ID_WMAV2)
put_str16(pb, "Windows Media Audio V8");
else
put_str16(pb, p ? p->name : enc->codec_name); |
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put_le16(pb, 0); /* no parameters */ |
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|
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/* id */
if (enc->codec_type == CODEC_TYPE_AUDIO) {
put_le16(pb, 2);
put_le16(pb, enc->codec_tag);
} else {
put_le16(pb, 4);
put_le32(pb, enc->codec_tag);
} |
d65b8230 |
if(!enc->codec_tag)
return -1; |
542993b0 |
}
end_header(pb, hpos);
/* patch the header size fields */
cur_pos = url_ftell(pb);
header_size = cur_pos - header_offset;
if (asf->is_streamed) {
header_size += 8 + 30 + 50;
url_fseek(pb, header_offset - 10 - 30, SEEK_SET);
put_le16(pb, header_size);
url_fseek(pb, header_offset - 2 - 30, SEEK_SET);
put_le16(pb, header_size);
header_size -= 8 + 30 + 50;
}
header_size += 24 + 6;
url_fseek(pb, header_offset - 14, SEEK_SET);
put_le64(pb, header_size);
url_fseek(pb, cur_pos, SEEK_SET);
/* movie chunk, followed by packets of packet_size */
asf->data_offset = cur_pos; |
17af0525 |
put_guid(pb, &ff_asf_data_header); |
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put_le64(pb, data_chunk_size); |
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put_guid(pb, &ff_asf_my_guid); |
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put_le64(pb, asf->nb_packets); /* nb packets */
put_byte(pb, 1); /* ??? */
put_byte(pb, 1); /* ??? */
return 0;
}
static int asf_write_header(AVFormatContext *s)
{
ASFContext *asf = s->priv_data;
|
c46038f6 |
s->packet_size = PACKET_SIZE; |
542993b0 |
asf->nb_packets = 0; |
115329f1 |
|
982e53fe |
asf->last_indexed_pts = 0; |
90901860 |
asf->index_ptr = av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK ); |
982e53fe |
asf->nb_index_memory_alloc = ASF_INDEX_BLOCK;
asf->nb_index_count = 0;
asf->maximum_packet = 0; |
542993b0 |
|
ed7b48b2 |
/* the data-chunk-size has to be 50, which is data_size - asf->data_offset
* at the moment this function is done. It is needed to use asf as
* streamable format. */
if (asf_write_header1(s, 0, 50) < 0) { |
542993b0 |
//av_free(asf);
return -1;
}
|
899681cd |
put_flush_packet(s->pb); |
542993b0 |
|
615b92fd |
asf->packet_nb_payloads = 0; |
542993b0 |
asf->packet_timestamp_start = -1;
asf->packet_timestamp_end = -1; |
c46038f6 |
init_put_byte(&asf->pb, asf->packet_buf, s->packet_size, 1, |
542993b0 |
NULL, NULL, NULL, NULL);
return 0;
}
static int asf_write_stream_header(AVFormatContext *s)
{
ASFContext *asf = s->priv_data;
asf->is_streamed = 1;
return asf_write_header(s);
}
|
615b92fd |
static int put_payload_parsing_info(
AVFormatContext *s, |
115329f1 |
unsigned int sendtime, |
615b92fd |
unsigned int duration, |
115329f1 |
int nb_payloads, |
615b92fd |
int padsize
) |
542993b0 |
{
ASFContext *asf = s->priv_data; |
899681cd |
ByteIOContext *pb = s->pb; |
615b92fd |
int ppi_size, i; |
ff5b8d83 |
int64_t start= url_ftell(pb); |
615b92fd |
int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS; |
115329f1 |
|
2d241e66 |
padsize -= PACKET_HEADER_MIN_SIZE;
if(asf->multi_payloads_present)
padsize--;
assert(padsize>=0);
|
615b92fd |
put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS);
for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){
put_byte(pb, 0x0); |
542993b0 |
}
|
615b92fd |
if (asf->multi_payloads_present)
iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT; |
542993b0 |
if (padsize > 0) {
if (padsize < 256) |
615b92fd |
iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE; |
542993b0 |
else |
615b92fd |
iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD; |
542993b0 |
} |
615b92fd |
put_byte(pb, iLengthTypeFlags);
put_byte(pb, ASF_PPI_PROPERTY_FLAGS);
if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD) |
542993b0 |
put_le16(pb, padsize - 2); |
615b92fd |
if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE) |
542993b0 |
put_byte(pb, padsize - 1); |
615b92fd |
put_le32(pb, sendtime); |
542993b0 |
put_le16(pb, duration); |
615b92fd |
if (asf->multi_payloads_present)
put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS);
|
ff5b8d83 |
ppi_size = url_ftell(pb) - start; |
542993b0 |
|
615b92fd |
return ppi_size; |
542993b0 |
}
static void flush_packet(AVFormatContext *s)
{
ASFContext *asf = s->priv_data; |
615b92fd |
int packet_hdr_size, packet_filled_size; |
542993b0 |
|
a57c41b2 |
assert(asf->packet_timestamp_end >= asf->packet_timestamp_start);
|
615b92fd |
if (asf->is_streamed) { |
c46038f6 |
put_chunk(s, 0x4424, s->packet_size, 0); |
615b92fd |
}
packet_hdr_size = put_payload_parsing_info(
s,
asf->packet_timestamp_start,
asf->packet_timestamp_end - asf->packet_timestamp_start,
asf->packet_nb_payloads,
asf->packet_size_left
); |
542993b0 |
|
2d241e66 |
packet_filled_size = PACKET_SIZE - asf->packet_size_left;
assert(packet_hdr_size <= asf->packet_size_left); |
615b92fd |
memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left); |
542993b0 |
|
c46038f6 |
put_buffer(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size); |
542993b0 |
|
899681cd |
put_flush_packet(s->pb); |
542993b0 |
asf->nb_packets++; |
615b92fd |
asf->packet_nb_payloads = 0; |
542993b0 |
asf->packet_timestamp_start = -1;
asf->packet_timestamp_end = -1; |
c46038f6 |
init_put_byte(&asf->pb, asf->packet_buf, s->packet_size, 1, |
542993b0 |
NULL, NULL, NULL, NULL);
}
|
615b92fd |
static void put_payload_header(
AVFormatContext *s,
ASFStream *stream,
int presentation_time,
int m_obj_size,
int m_obj_offset, |
3c895fc0 |
int payload_len,
int flags |
615b92fd |
) |
542993b0 |
{
ASFContext *asf = s->priv_data;
ByteIOContext *pb = &asf->pb;
int val; |
115329f1 |
|
542993b0 |
val = stream->num; |
3c895fc0 |
if (flags & PKT_FLAG_KEY) |
615b92fd |
val |= ASF_PL_FLAG_KEY_FRAME; |
542993b0 |
put_byte(pb, val); |
115329f1 |
|
615b92fd |
put_byte(pb, stream->seq); //Media object number
put_le32(pb, m_obj_offset); //Offset Into Media Object |
115329f1 |
|
615b92fd |
// Replicated Data shall be at least 8 bytes long. |
115329f1 |
// The first 4 bytes of data shall contain the |
615b92fd |
// Size of the Media Object that the payload belongs to. |
115329f1 |
// The next 4 bytes of data shall contain the |
615b92fd |
// Presentation Time for the media object that the payload belongs to.
put_byte(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH);
put_le32(pb, m_obj_size); //Replicated Data - Media Object Size
put_le32(pb, presentation_time);//Replicated Data - Presentation Time |
115329f1 |
|
615b92fd |
if (asf->multi_payloads_present){
put_le16(pb, payload_len); //payload length
} |
542993b0 |
}
|
615b92fd |
static void put_frame(
AVFormatContext *s,
ASFStream *stream, |
75b213ed |
AVStream *avst, |
bb270c08 |
int timestamp, |
615b92fd |
const uint8_t *buf, |
bb270c08 |
int m_obj_size, |
3c895fc0 |
int flags |
bb270c08 |
) |
542993b0 |
{
ASFContext *asf = s->priv_data; |
615b92fd |
int m_obj_offset, payload_len, frag_len1;
m_obj_offset = 0;
while (m_obj_offset < m_obj_size) {
payload_len = m_obj_size - m_obj_offset;
if (asf->packet_timestamp_start == -1) {
asf->multi_payloads_present = (payload_len < MULTI_PAYLOAD_CONSTANT); |
115329f1 |
|
2d241e66 |
asf->packet_size_left = PACKET_SIZE; |
615b92fd |
if (asf->multi_payloads_present){
frag_len1 = MULTI_PAYLOAD_CONSTANT - 1;
}
else {
frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH;
} |
190972a0 |
asf->packet_timestamp_start = timestamp; |
615b92fd |
}
else {
// multi payloads |
2d241e66 |
frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS - PACKET_HEADER_MIN_SIZE - 1; |
542993b0 |
|
75b213ed |
if(frag_len1 < payload_len && avst->codec->codec_type == CODEC_TYPE_AUDIO){
flush_packet(s);
continue;
} |
615b92fd |
} |
542993b0 |
if (frag_len1 > 0) { |
615b92fd |
if (payload_len > frag_len1)
payload_len = frag_len1;
else if (payload_len == (frag_len1 - 1))
payload_len = frag_len1 - 2; //additional byte need to put padding length |
115329f1 |
|
3caa0d93 |
put_payload_header(s, stream, timestamp+PREROLL_TIME, m_obj_size, m_obj_offset, payload_len, flags); |
615b92fd |
put_buffer(&asf->pb, buf, payload_len);
if (asf->multi_payloads_present)
asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS);
else
asf->packet_size_left -= (payload_len + PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD); |
542993b0 |
asf->packet_timestamp_end = timestamp; |
115329f1 |
|
615b92fd |
asf->packet_nb_payloads++; |
542993b0 |
} else { |
615b92fd |
payload_len = 0; |
542993b0 |
} |
615b92fd |
m_obj_offset += payload_len;
buf += payload_len;
if (!asf->multi_payloads_present)
flush_packet(s); |
2d241e66 |
else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1)) |
542993b0 |
flush_packet(s);
}
stream->seq++;
}
|
e928649b |
static int asf_write_packet(AVFormatContext *s, AVPacket *pkt) |
542993b0 |
{
ASFContext *asf = s->priv_data;
ASFStream *stream;
int64_t duration;
AVCodecContext *codec; |
115329f1 |
int64_t packet_st,pts; |
982e53fe |
int start_sec,i; |
0d9f8633 |
int flags= pkt->flags; |
542993b0 |
|
01f4895c |
codec = s->streams[pkt->stream_index]->codec; |
e928649b |
stream = &asf->streams[pkt->stream_index]; |
542993b0 |
|
0d9f8633 |
if(codec->codec_type == CODEC_TYPE_AUDIO)
flags &= ~PKT_FLAG_KEY;
|
982e53fe |
pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts; |
9bc93229 |
assert(pts != AV_NOPTS_VALUE);
duration = pts * 10000; |
4fa6eac5 |
asf->duration= FFMAX(asf->duration, duration + pkt->duration * 10000); |
542993b0 |
|
982e53fe |
packet_st = asf->nb_packets; |
75b213ed |
put_frame(s, stream, s->streams[pkt->stream_index], pkt->dts, pkt->data, pkt->size, flags); |
982e53fe |
/* check index */ |
0d9f8633 |
if ((!asf->is_streamed) && (flags & PKT_FLAG_KEY)) { |
8da9266c |
start_sec = (int)(duration / INT64_C(10000000));
if (start_sec != (int)(asf->last_indexed_pts / INT64_C(10000000))) { |
982e53fe |
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); |
d65b8230 |
asf->maximum_packet = FFMAX(asf->maximum_packet, (uint16_t)(asf->nb_packets-packet_st)); |
982e53fe |
}
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)
{ |
899681cd |
ByteIOContext *pb = s->pb; |
982e53fe |
int i;
|
17af0525 |
put_guid(pb, &ff_asf_simple_index_header); |
982e53fe |
put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count); |
17af0525 |
put_guid(pb, &ff_asf_my_guid); |
982e53fe |
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);
}
|
542993b0 |
return 0;
}
static int asf_write_trailer(AVFormatContext *s)
{
ASFContext *asf = s->priv_data; |
982e53fe |
int64_t file_size,data_size; |
542993b0 |
/* flush the current packet */
if (asf->pb.buf_ptr > asf->pb.buffer)
flush_packet(s);
|
982e53fe |
/* write index */ |
899681cd |
data_size = url_ftell(s->pb); |
982e53fe |
if ((!asf->is_streamed) && (asf->nb_index_count != 0)) {
asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->nb_index_count);
} |
899681cd |
put_flush_packet(s->pb); |
982e53fe |
|
899681cd |
if (asf->is_streamed || url_is_streamed(s->pb)) { |
542993b0 |
put_chunk(s, 0x4524, 0, 0); /* end of stream */
} else {
/* rewrite an updated header */ |
899681cd |
file_size = url_ftell(s->pb);
url_fseek(s->pb, 0, SEEK_SET); |
982e53fe |
asf_write_header1(s, file_size, data_size - asf->data_offset); |
542993b0 |
}
|
899681cd |
put_flush_packet(s->pb); |
982e53fe |
av_free(asf->index_ptr); |
542993b0 |
return 0;
}
|
b250f9c6 |
#if CONFIG_ASF_MUXER |
d2a067d1 |
AVOutputFormat asf_muxer = { |
542993b0 |
"asf", |
bde15e74 |
NULL_IF_CONFIG_SMALL("ASF format"), |
542993b0 |
"video/x-ms-asf", |
87094371 |
"asf,wmv,wma", |
542993b0 |
sizeof(ASFContext), |
b250f9c6 |
#if CONFIG_LIBMP3LAME |
542993b0 |
CODEC_ID_MP3,
#else
CODEC_ID_MP2,
#endif
CODEC_ID_MSMPEG4V3,
asf_write_header,
asf_write_packet,
asf_write_trailer, |
982e53fe |
.flags = AVFMT_GLOBALHEADER, |
c1854592 |
.codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0}, |
719e721a |
.metadata_conv = ff_asf_metadata_conv, |
542993b0 |
}; |
ff70e601 |
#endif |
542993b0 |
|
b250f9c6 |
#if CONFIG_ASF_STREAM_MUXER |
d2a067d1 |
AVOutputFormat asf_stream_muxer = { |
542993b0 |
"asf_stream", |
bde15e74 |
NULL_IF_CONFIG_SMALL("ASF format"), |
542993b0 |
"video/x-ms-asf", |
87094371 |
"asf,wmv,wma", |
542993b0 |
sizeof(ASFContext), |
b250f9c6 |
#if CONFIG_LIBMP3LAME |
542993b0 |
CODEC_ID_MP3,
#else
CODEC_ID_MP2,
#endif
CODEC_ID_MSMPEG4V3,
asf_write_stream_header,
asf_write_packet,
asf_write_trailer, |
982e53fe |
.flags = AVFMT_GLOBALHEADER, |
c1854592 |
.codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0}, |
719e721a |
.metadata_conv = ff_asf_metadata_conv, |
542993b0 |
}; |
ff70e601 |
#endif //CONFIG_ASF_STREAM_MUXER |