| /* |
| * ASF muxer |
| * Copyright (c) 2000, 2001 Fabrice Bellard |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| #include "avformat.h" |
| #include "metadata.h" |
| #include "riff.h" |
| #include "asf.h" |
| |
| #undef NDEBUG |
| #include <assert.h> |
| |
| |
| #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 | \ |
| ASF_PACKET_ERROR_CORRECTION_DATA_SIZE\ |
| ) |
| |
| #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 (\ |
| 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 \ |
| ) |
| |
| #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 (\ |
| 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*/ \ |
| ) |
| |
| |
| // Replicated Data shall be at least 8 bytes long. |
| #define ASF_PAYLOAD_REPLICATED_DATA_LENGTH 0x08 |
| |
| #define PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD (\ |
| 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 \ |
| ) |
| |
| #define PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS (\ |
| 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 \ |
| ) |
| |
| #define SINGLE_PAYLOAD_DATA_LENGTH (\ |
| PACKET_SIZE - \ |
| PACKET_HEADER_MIN_SIZE - \ |
| PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD \ |
| ) |
| |
| #define MULTI_PAYLOAD_CONSTANT (\ |
| PACKET_SIZE - \ |
| PACKET_HEADER_MIN_SIZE - \ |
| 1 - /*Payload Flags*/ \ |
| 2*PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS \ |
| ) |
| |
| 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 }, |
| }; |
| |
| #define PREROLL_TIME 3100 |
| |
| static void put_guid(ByteIOContext *s, const GUID *g) |
| { |
| assert(sizeof(*g) == 16); |
| put_buffer(s, *g, sizeof(*g)); |
| } |
| |
| static void put_str16_nolen(ByteIOContext *s, const char *tag); |
| static void put_str16(ByteIOContext *s, const char *tag) |
| { |
| put_le16(s,strlen(tag) + 1); |
| put_str16_nolen(s, tag); |
| } |
| |
| static void put_str16_nolen(ByteIOContext *s, const char *tag) |
| { |
| int c; |
| |
| do{ |
| c = (uint8_t)*tag++; |
| put_le16(s, c); |
| }while(c); |
| } |
| |
| 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; |
| ByteIOContext *pb = s->pb; |
| int length; |
| |
| length = payload_length + 8; |
| put_le16(pb, type); |
| put_le16(pb, length); //size |
| put_le32(pb, asf->seqno);//sequence number |
| put_le16(pb, flags); /* unknown bytes */ |
| put_le16(pb, length); //size_confirm |
| asf->seqno++; |
| } |
| |
| /* convert from unix to windows time */ |
| static int64_t unix_to_file_time(int ti) |
| { |
| int64_t t; |
| |
| t = ti * INT64_C(10000000); |
| t += INT64_C(116444736000000000); |
| 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; |
| ByteIOContext *pb = s->pb; |
| AVMetadataTag *title, *author, *copyright, *comment; |
| int header_size, n, extra_size, extra_size2, wav_extra_size, file_time; |
| int has_title; |
| int metadata_count; |
| AVCodecContext *enc; |
| int64_t header_offset, cur_pos, hpos; |
| int bit_rate; |
| int64_t duration; |
| |
| 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); |
| |
| duration = asf->duration + PREROLL_TIME * 10000; |
| has_title = title || author || copyright || comment; |
| metadata_count = s->metadata ? s->metadata->count : 0; |
| |
| bit_rate = 0; |
| for(n=0;n<s->nb_streams;n++) { |
| enc = s->streams[n]->codec; |
| |
| av_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */ |
| |
| bit_rate += enc->bit_rate; |
| } |
| |
| if (asf->is_streamed) { |
| put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */ |
| } |
| |
| put_guid(pb, &ff_asf_header); |
| put_le64(pb, -1); /* header length, will be patched after */ |
| put_le32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */ |
| put_byte(pb, 1); /* ??? */ |
| put_byte(pb, 2); /* ??? */ |
| |
| /* file header */ |
| header_offset = url_ftell(pb); |
| hpos = put_header(pb, &ff_asf_file_header); |
| put_guid(pb, &ff_asf_my_guid); |
| 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 */ |
| put_le64(pb, duration); /* end time stamp (in 100ns units) */ |
| put_le64(pb, asf->duration); /* duration (in 100ns units) */ |
| put_le64(pb, PREROLL_TIME); /* start time stamp */ |
| put_le32(pb, (asf->is_streamed || url_is_streamed(pb)) ? 3 : 2); /* ??? */ |
| put_le32(pb, s->packet_size); /* packet size */ |
| put_le32(pb, s->packet_size); /* packet size */ |
| put_le32(pb, bit_rate); /* Nominal data rate in bps */ |
| end_header(pb, hpos); |
| |
| /* unknown headers */ |
| hpos = put_header(pb, &ff_asf_head1_guid); |
| put_guid(pb, &ff_asf_head2_guid); |
| put_le32(pb, 6); |
| put_le16(pb, 0); |
| end_header(pb, hpos); |
| |
| /* title and other infos */ |
| if (has_title) { |
| hpos = put_header(pb, &ff_asf_comment_header); |
| 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); |
| put_le16(pb, 0); |
| 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 ); |
| end_header(pb, hpos); |
| } |
| if (metadata_count) { |
| AVMetadataTag *tag = NULL; |
| hpos = put_header(pb, &ff_asf_extended_content_header); |
| 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); |
| } |
| |
| /* stream headers */ |
| for(n=0;n<s->nb_streams;n++) { |
| int64_t es_pos; |
| // ASFStream *stream = &asf->streams[n]; |
| |
| enc = s->streams[n]->codec; |
| asf->streams[n].num = n + 1; |
| asf->streams[n].seq = 0; |
| |
| |
| switch(enc->codec_type) { |
| case CODEC_TYPE_AUDIO: |
| wav_extra_size = 0; |
| extra_size = 18 + wav_extra_size; |
| extra_size2 = 8; |
| break; |
| default: |
| case CODEC_TYPE_VIDEO: |
| wav_extra_size = enc->extradata_size; |
| extra_size = 0x33 + wav_extra_size; |
| extra_size2 = 0; |
| break; |
| } |
| |
| hpos = put_header(pb, &ff_asf_stream_header); |
| if (enc->codec_type == CODEC_TYPE_AUDIO) { |
| put_guid(pb, &ff_asf_audio_stream); |
| put_guid(pb, &ff_asf_audio_conceal_spread); |
| } else { |
| put_guid(pb, &ff_asf_video_stream); |
| put_guid(pb, &ff_asf_video_conceal_none); |
| } |
| 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); |
| 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; |
| 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); |
| } |
| /* ERROR Correction */ |
| 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); |
| } else { |
| put_le32(pb, enc->width); |
| put_le32(pb, enc->height); |
| put_byte(pb, 2); /* ??? */ |
| put_le16(pb, 40 + enc->extradata_size); /* size */ |
| |
| /* BITMAPINFOHEADER header */ |
| put_bmp_header(pb, enc, codec_bmp_tags, 1); |
| } |
| end_header(pb, hpos); |
| } |
| |
| /* media comments */ |
| |
| hpos = put_header(pb, &ff_asf_codec_comment_header); |
| put_guid(pb, &ff_asf_codec_comment1_header); |
| put_le32(pb, s->nb_streams); |
| for(n=0;n<s->nb_streams;n++) { |
| AVCodec *p; |
| |
| enc = s->streams[n]->codec; |
| p = avcodec_find_encoder(enc->codec_id); |
| |
| 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); |
| put_le16(pb, 0); /* no parameters */ |
| |
| |
| /* 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); |
| } |
| if(!enc->codec_tag) |
| return -1; |
| } |
| 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; |
| put_guid(pb, &ff_asf_data_header); |
| put_le64(pb, data_chunk_size); |
| put_guid(pb, &ff_asf_my_guid); |
| 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; |
| |
| s->packet_size = PACKET_SIZE; |
| asf->nb_packets = 0; |
| |
| asf->last_indexed_pts = 0; |
| asf->index_ptr = av_malloc( sizeof(ASFIndex) * ASF_INDEX_BLOCK ); |
| asf->nb_index_memory_alloc = ASF_INDEX_BLOCK; |
| asf->nb_index_count = 0; |
| asf->maximum_packet = 0; |
| |
| /* 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) { |
| //av_free(asf); |
| return -1; |
| } |
| |
| put_flush_packet(s->pb); |
| |
| asf->packet_nb_payloads = 0; |
| asf->packet_timestamp_start = -1; |
| asf->packet_timestamp_end = -1; |
| init_put_byte(&asf->pb, asf->packet_buf, s->packet_size, 1, |
| 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); |
| } |
| |
| static int put_payload_parsing_info( |
| AVFormatContext *s, |
| unsigned int sendtime, |
| unsigned int duration, |
| int nb_payloads, |
| int padsize |
| ) |
| { |
| ASFContext *asf = s->priv_data; |
| ByteIOContext *pb = s->pb; |
| int ppi_size, i; |
| int64_t start= url_ftell(pb); |
| |
| int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS; |
| |
| padsize -= PACKET_HEADER_MIN_SIZE; |
| if(asf->multi_payloads_present) |
| padsize--; |
| assert(padsize>=0); |
| |
| put_byte(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS); |
| for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++){ |
| put_byte(pb, 0x0); |
| } |
| |
| if (asf->multi_payloads_present) |
| iLengthTypeFlags |= ASF_PPI_FLAG_MULTIPLE_PAYLOADS_PRESENT; |
| |
| if (padsize > 0) { |
| if (padsize < 256) |
| iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE; |
| else |
| iLengthTypeFlags |= ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD; |
| } |
| put_byte(pb, iLengthTypeFlags); |
| |
| put_byte(pb, ASF_PPI_PROPERTY_FLAGS); |
| |
| if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD) |
| put_le16(pb, padsize - 2); |
| if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE) |
| put_byte(pb, padsize - 1); |
| |
| put_le32(pb, sendtime); |
| put_le16(pb, duration); |
| if (asf->multi_payloads_present) |
| put_byte(pb, nb_payloads | ASF_PAYLOAD_FLAGS); |
| |
| ppi_size = url_ftell(pb) - start; |
| |
| return ppi_size; |
| } |
| |
| static void flush_packet(AVFormatContext *s) |
| { |
| ASFContext *asf = s->priv_data; |
| int packet_hdr_size, packet_filled_size; |
| |
| assert(asf->packet_timestamp_end >= asf->packet_timestamp_start); |
| |
| if (asf->is_streamed) { |
| put_chunk(s, 0x4424, s->packet_size, 0); |
| } |
| |
| 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 |
| ); |
| |
| packet_filled_size = PACKET_SIZE - asf->packet_size_left; |
| assert(packet_hdr_size <= asf->packet_size_left); |
| memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left); |
| |
| put_buffer(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size); |
| |
| put_flush_packet(s->pb); |
| asf->nb_packets++; |
| asf->packet_nb_payloads = 0; |
| asf->packet_timestamp_start = -1; |
| asf->packet_timestamp_end = -1; |
| init_put_byte(&asf->pb, asf->packet_buf, s->packet_size, 1, |
| NULL, NULL, NULL, NULL); |
| } |
| |
| static void put_payload_header( |
| AVFormatContext *s, |
| ASFStream *stream, |
| int presentation_time, |
| int m_obj_size, |
| int m_obj_offset, |
| int payload_len, |
| int flags |
| ) |
| { |
| ASFContext *asf = s->priv_data; |
| ByteIOContext *pb = &asf->pb; |
| int val; |
| |
| val = stream->num; |
| if (flags & PKT_FLAG_KEY) |
| val |= ASF_PL_FLAG_KEY_FRAME; |
| put_byte(pb, val); |
| |
| put_byte(pb, stream->seq); //Media object number |
| put_le32(pb, m_obj_offset); //Offset Into Media Object |
| |
| // Replicated Data shall be at least 8 bytes long. |
| // The first 4 bytes of data shall contain the |
| // Size of the Media Object that the payload belongs to. |
| // The next 4 bytes of data shall contain the |
| // 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 |
| |
| if (asf->multi_payloads_present){ |
| put_le16(pb, payload_len); //payload length |
| } |
| } |
| |
| static void put_frame( |
| AVFormatContext *s, |
| ASFStream *stream, |
| AVStream *avst, |
| int timestamp, |
| const uint8_t *buf, |
| int m_obj_size, |
| int flags |
| ) |
| { |
| ASFContext *asf = s->priv_data; |
| 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); |
| |
| asf->packet_size_left = PACKET_SIZE; |
| if (asf->multi_payloads_present){ |
| frag_len1 = MULTI_PAYLOAD_CONSTANT - 1; |
| } |
| else { |
| frag_len1 = SINGLE_PAYLOAD_DATA_LENGTH; |
| } |
| asf->packet_timestamp_start = timestamp; |
| } |
| else { |
| // multi payloads |
| frag_len1 = asf->packet_size_left - PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS - PACKET_HEADER_MIN_SIZE - 1; |
| |
| if(frag_len1 < payload_len && avst->codec->codec_type == CODEC_TYPE_AUDIO){ |
| flush_packet(s); |
| continue; |
| } |
| } |
| if (frag_len1 > 0) { |
| 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 |
| |
| put_payload_header(s, stream, timestamp+PREROLL_TIME, m_obj_size, m_obj_offset, payload_len, flags); |
| 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); |
| asf->packet_timestamp_end = timestamp; |
| |
| asf->packet_nb_payloads++; |
| } else { |
| payload_len = 0; |
| } |
| m_obj_offset += payload_len; |
| buf += payload_len; |
| |
| if (!asf->multi_payloads_present) |
| flush_packet(s); |
| else if (asf->packet_size_left <= (PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS + PACKET_HEADER_MIN_SIZE + 1)) |
| flush_packet(s); |
| } |
| stream->seq++; |
| } |
| |
| static int asf_write_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| ASFContext *asf = s->priv_data; |
| ASFStream *stream; |
| int64_t duration; |
| AVCodecContext *codec; |
| int64_t packet_st,pts; |
| int start_sec,i; |
| int flags= pkt->flags; |
| |
| codec = s->streams[pkt->stream_index]->codec; |
| stream = &asf->streams[pkt->stream_index]; |
| |
| if(codec->codec_type == CODEC_TYPE_AUDIO) |
| flags &= ~PKT_FLAG_KEY; |
| |
| pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts; |
| assert(pts != AV_NOPTS_VALUE); |
| duration = pts * 10000; |
| asf->duration= FFMAX(asf->duration, duration + pkt->duration * 10000); |
| |
| packet_st = asf->nb_packets; |
| put_frame(s, stream, s->streams[pkt->stream_index], pkt->dts, pkt->data, pkt->size, flags); |
| |
| /* check index */ |
| if ((!asf->is_streamed) && (flags & PKT_FLAG_KEY)) { |
| start_sec = (int)(duration / INT64_C(10000000)); |
| if (start_sec != (int)(asf->last_indexed_pts / INT64_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); |
| asf->maximum_packet = FFMAX(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, &ff_asf_simple_index_header); |
| put_le64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2)*count); |
| put_guid(pb, &ff_asf_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,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 || url_is_streamed(s->pb)) { |
| 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, data_size - asf->data_offset); |
| } |
| |
| put_flush_packet(s->pb); |
| av_free(asf->index_ptr); |
| return 0; |
| } |
| |
| #if CONFIG_ASF_MUXER |
| AVOutputFormat asf_muxer = { |
| "asf", |
| NULL_IF_CONFIG_SMALL("ASF format"), |
| "video/x-ms-asf", |
| "asf,wmv,wma", |
| sizeof(ASFContext), |
| #if CONFIG_LIBMP3LAME |
| CODEC_ID_MP3, |
| #else |
| CODEC_ID_MP2, |
| #endif |
| CODEC_ID_MSMPEG4V3, |
| asf_write_header, |
| asf_write_packet, |
| asf_write_trailer, |
| .flags = AVFMT_GLOBALHEADER, |
| .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0}, |
| .metadata_conv = ff_asf_metadata_conv, |
| }; |
| #endif |
| |
| #if CONFIG_ASF_STREAM_MUXER |
| AVOutputFormat asf_stream_muxer = { |
| "asf_stream", |
| NULL_IF_CONFIG_SMALL("ASF format"), |
| "video/x-ms-asf", |
| "asf,wmv,wma", |
| sizeof(ASFContext), |
| #if CONFIG_LIBMP3LAME |
| CODEC_ID_MP3, |
| #else |
| CODEC_ID_MP2, |
| #endif |
| CODEC_ID_MSMPEG4V3, |
| asf_write_stream_header, |
| asf_write_packet, |
| asf_write_trailer, |
| .flags = AVFMT_GLOBALHEADER, |
| .codec_tag= (const AVCodecTag* const []){codec_asf_bmp_tags, codec_bmp_tags, codec_wav_tags, 0}, |
| .metadata_conv = ff_asf_metadata_conv, |
| }; |
| #endif //CONFIG_ASF_STREAM_MUXER |
