| /* |
| * 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 "libavutil/avassert.h" |
| #include "libavutil/dict.h" |
| #include "libavutil/mathematics.h" |
| #include "libavutil/parseutils.h" |
| #include "libavutil/opt.h" |
| #include "avformat.h" |
| #include "avlanguage.h" |
| #include "avio_internal.h" |
| #include "internal.h" |
| #include "riff.h" |
| #include "asf.h" |
| |
| #define ASF_INDEXED_INTERVAL 10000000 |
| #define ASF_INDEX_BLOCK (1<<9) |
| #define ASF_PAYLOADS_PER_PACKET 63 |
| |
| #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_HEADERS \ |
| (PACKET_HEADER_MIN_SIZE + \ |
| PAYLOAD_HEADER_SIZE_SINGLE_PAYLOAD) |
| |
| #define MULTI_PAYLOAD_HEADERS \ |
| (PACKET_HEADER_MIN_SIZE + \ |
| 1 + /* Payload Flags */ \ |
| 2 * PAYLOAD_HEADER_SIZE_MULTIPLE_PAYLOADS) |
| |
| #define DATA_HEADER_SIZE 50 |
| |
| #define PACKET_SIZE_MAX 65536 |
| #define PACKET_SIZE_MIN 100 |
| |
| typedef struct ASFPayload { |
| uint8_t type; |
| uint16_t size; |
| } ASFPayload; |
| |
| typedef struct ASFStream { |
| int num; |
| unsigned char seq; |
| /* use for reading */ |
| AVPacket pkt; |
| int frag_offset; |
| int packet_obj_size; |
| int timestamp; |
| int64_t duration; |
| int skip_to_key; |
| int pkt_clean; |
| |
| int ds_span; /* descrambling */ |
| int ds_packet_size; |
| int ds_chunk_size; |
| |
| int64_t packet_pos; |
| |
| uint16_t stream_language_index; |
| |
| int palette_changed; |
| uint32_t palette[256]; |
| |
| int payload_ext_ct; |
| ASFPayload payload[8]; |
| } ASFStream; |
| |
| typedef struct ASFContext { |
| AVClass *av_class; |
| uint32_t seqno; |
| int is_streamed; |
| ASFStream streams[128]; ///< it's max number and it's not that big |
| const char *languages[128]; |
| int nb_languages; |
| int64_t creation_time; |
| /* non streamed additonnal info */ |
| uint64_t nb_packets; ///< how many packets are there in the file, invalid if broadcasting |
| int64_t duration; ///< in 100ns units |
| /* packet filling */ |
| unsigned char multi_payloads_present; |
| int packet_size_left; |
| int64_t packet_timestamp_start; |
| int64_t packet_timestamp_end; |
| unsigned int packet_nb_payloads; |
| uint8_t packet_buf[PACKET_SIZE_MAX]; |
| AVIOContext pb; |
| /* only for reading */ |
| uint64_t data_offset; ///< beginning of the first data packet |
| |
| ASFIndex *index_ptr; |
| uint32_t nb_index_memory_alloc; |
| uint16_t maximum_packet; |
| uint32_t next_packet_number; |
| uint16_t next_packet_count; |
| uint64_t next_packet_offset; |
| int next_start_sec; |
| int end_sec; |
| int packet_size; |
| } ASFContext; |
| |
| static const AVCodecTag codec_asf_bmp_tags[] = { |
| { AV_CODEC_ID_MPEG4, MKTAG('M', '4', 'S', '2') }, |
| { AV_CODEC_ID_MPEG4, MKTAG('M', 'P', '4', 'S') }, |
| { AV_CODEC_ID_MSMPEG4V3, MKTAG('M', 'P', '4', '3') }, |
| { AV_CODEC_ID_NONE, 0 }, |
| }; |
| |
| #define PREROLL_TIME 3100 |
| |
| static void put_str16(AVIOContext *s, const char *tag) |
| { |
| int len; |
| uint8_t *pb; |
| AVIOContext *dyn_buf; |
| if (avio_open_dyn_buf(&dyn_buf) < 0) |
| return; |
| |
| avio_put_str16le(dyn_buf, tag); |
| len = avio_close_dyn_buf(dyn_buf, &pb); |
| avio_wl16(s, len); |
| avio_write(s, pb, len); |
| av_freep(&pb); |
| } |
| |
| static int64_t put_header(AVIOContext *pb, const ff_asf_guid *g) |
| { |
| int64_t pos; |
| |
| pos = avio_tell(pb); |
| ff_put_guid(pb, g); |
| avio_wl64(pb, 24); |
| return pos; |
| } |
| |
| /* update header size */ |
| static void end_header(AVIOContext *pb, int64_t pos) |
| { |
| int64_t pos1; |
| |
| pos1 = avio_tell(pb); |
| avio_seek(pb, pos + 16, SEEK_SET); |
| avio_wl64(pb, pos1 - pos); |
| avio_seek(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; |
| AVIOContext *pb = s->pb; |
| int length; |
| |
| length = payload_length + 8; |
| avio_wl16(pb, type); |
| avio_wl16(pb, length); // size |
| avio_wl32(pb, asf->seqno); // sequence number |
| avio_wl16(pb, flags); // unknown bytes |
| avio_wl16(pb, length); // size_confirm |
| asf->seqno++; |
| } |
| |
| /* convert from av time to windows time */ |
| static int64_t unix_to_file_time(int64_t ti) |
| { |
| int64_t t; |
| |
| t = ti * INT64_C(10); |
| t += INT64_C(116444736000000000); |
| return t; |
| } |
| |
| static int32_t get_send_time(ASFContext *asf, int64_t pres_time, uint64_t *offset) |
| { |
| int i; |
| int32_t send_time = 0; |
| *offset = asf->data_offset + DATA_HEADER_SIZE; |
| for (i = 0; i < asf->next_start_sec; i++) { |
| if (pres_time <= asf->index_ptr[i].send_time) |
| break; |
| send_time = asf->index_ptr[i].send_time; |
| *offset = asf->index_ptr[i].offset; |
| } |
| |
| return send_time / 10000; |
| } |
| |
| static int asf_write_markers(AVFormatContext *s) |
| { |
| ASFContext *asf = s->priv_data; |
| AVIOContext *pb = s->pb; |
| int i; |
| AVRational scale = {1, 10000000}; |
| int64_t hpos = put_header(pb, &ff_asf_marker_header); |
| |
| ff_put_guid(pb, &ff_asf_reserved_4);// ASF spec mandates this reserved value |
| avio_wl32(pb, s->nb_chapters); // markers count |
| avio_wl16(pb, 0); // ASF spec mandates 0 for this |
| avio_wl16(pb, 0); // name length 0, no name given |
| |
| for (i = 0; i < s->nb_chapters; i++) { |
| AVChapter *c = s->chapters[i]; |
| AVDictionaryEntry *t = av_dict_get(c->metadata, "title", NULL, 0); |
| int64_t pres_time = av_rescale_q(c->start, c->time_base, scale); |
| uint64_t offset; |
| int32_t send_time = get_send_time(asf, pres_time, &offset); |
| int len = 0; |
| uint8_t *buf; |
| AVIOContext *dyn_buf; |
| if (t) { |
| if (avio_open_dyn_buf(&dyn_buf) < 0) |
| return AVERROR(ENOMEM); |
| avio_put_str16le(dyn_buf, t->value); |
| len = avio_close_dyn_buf(dyn_buf, &buf); |
| } |
| avio_wl64(pb, offset); // offset of the packet with send_time |
| avio_wl64(pb, pres_time + PREROLL_TIME * 10000); // presentation time |
| avio_wl16(pb, 12 + len); // entry length |
| avio_wl32(pb, send_time); // send time |
| avio_wl32(pb, 0); // flags, should be 0 |
| avio_wl32(pb, len / 2); // marker desc length in WCHARS! |
| if (t) { |
| avio_write(pb, buf, len); // marker desc |
| av_freep(&buf); |
| } |
| } |
| end_header(pb, hpos); |
| return 0; |
| } |
| |
| /* 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; |
| AVIOContext *pb = s->pb; |
| AVDictionaryEntry *tags[5]; |
| int header_size, n, extra_size, extra_size2, wav_extra_size; |
| int has_title, has_aspect_ratio = 0; |
| int metadata_count; |
| AVCodecContext *enc; |
| int64_t header_offset, cur_pos, hpos; |
| int bit_rate; |
| int64_t duration; |
| |
| ff_metadata_conv(&s->metadata, ff_asf_metadata_conv, NULL); |
| |
| tags[0] = av_dict_get(s->metadata, "title", NULL, 0); |
| tags[1] = av_dict_get(s->metadata, "author", NULL, 0); |
| tags[2] = av_dict_get(s->metadata, "copyright", NULL, 0); |
| tags[3] = av_dict_get(s->metadata, "comment", NULL, 0); |
| tags[4] = av_dict_get(s->metadata, "rating", NULL, 0); |
| |
| duration = asf->duration + PREROLL_TIME * 10000; |
| has_title = tags[0] || tags[1] || tags[2] || tags[3] || tags[4]; |
| |
| if (!file_size) { |
| if (ff_parse_creation_time_metadata(s, &asf->creation_time, 0) != 0) |
| av_dict_set(&s->metadata, "creation_time", NULL, 0); |
| } |
| |
| metadata_count = av_dict_count(s->metadata); |
| |
| bit_rate = 0; |
| for (n = 0; n < s->nb_streams; n++) { |
| AVDictionaryEntry *entry; |
| enc = s->streams[n]->codec; |
| |
| avpriv_set_pts_info(s->streams[n], 32, 1, 1000); /* 32 bit pts in ms */ |
| |
| bit_rate += enc->bit_rate; |
| if ( enc->codec_type == AVMEDIA_TYPE_VIDEO |
| && enc->sample_aspect_ratio.num > 0 |
| && enc->sample_aspect_ratio.den > 0) |
| has_aspect_ratio++; |
| |
| entry = av_dict_get(s->streams[n]->metadata, "language", NULL, 0); |
| if (entry) { |
| const char *iso6391lang = av_convert_lang_to(entry->value, AV_LANG_ISO639_1); |
| if (iso6391lang) { |
| int i; |
| for (i = 0; i < asf->nb_languages; i++) { |
| if (!strcmp(asf->languages[i], iso6391lang)) { |
| asf->streams[n].stream_language_index = i; |
| break; |
| } |
| } |
| if (i >= asf->nb_languages) { |
| asf->languages[asf->nb_languages] = iso6391lang; |
| asf->streams[n].stream_language_index = asf->nb_languages; |
| asf->nb_languages++; |
| } |
| } |
| } else { |
| asf->streams[n].stream_language_index = 128; |
| } |
| } |
| |
| if (asf->is_streamed) { |
| put_chunk(s, 0x4824, 0, 0xc00); /* start of stream (length will be patched later) */ |
| } |
| |
| ff_put_guid(pb, &ff_asf_header); |
| avio_wl64(pb, -1); /* header length, will be patched after */ |
| avio_wl32(pb, 3 + has_title + !!metadata_count + s->nb_streams); /* number of chunks in header */ |
| avio_w8(pb, 1); /* ??? */ |
| avio_w8(pb, 2); /* ??? */ |
| |
| /* file header */ |
| header_offset = avio_tell(pb); |
| hpos = put_header(pb, &ff_asf_file_header); |
| ff_put_guid(pb, &ff_asf_my_guid); |
| avio_wl64(pb, file_size); |
| avio_wl64(pb, unix_to_file_time(asf->creation_time)); |
| avio_wl64(pb, asf->nb_packets); /* number of packets */ |
| avio_wl64(pb, duration); /* end time stamp (in 100ns units) */ |
| avio_wl64(pb, asf->duration); /* duration (in 100ns units) */ |
| avio_wl64(pb, PREROLL_TIME); /* start time stamp */ |
| avio_wl32(pb, (asf->is_streamed || !pb->seekable) ? 3 : 2); /* ??? */ |
| avio_wl32(pb, s->packet_size); /* packet size */ |
| avio_wl32(pb, s->packet_size); /* packet size */ |
| avio_wl32(pb, bit_rate ? bit_rate : -1); /* Maximum data rate in bps */ |
| end_header(pb, hpos); |
| |
| /* header_extension */ |
| hpos = put_header(pb, &ff_asf_head1_guid); |
| ff_put_guid(pb, &ff_asf_head2_guid); |
| avio_wl16(pb, 6); |
| avio_wl32(pb, 0); /* length, to be filled later */ |
| if (asf->nb_languages) { |
| int64_t hpos2; |
| int i; |
| |
| hpos2 = put_header(pb, &ff_asf_language_guid); |
| avio_wl16(pb, asf->nb_languages); |
| for (i = 0; i < asf->nb_languages; i++) { |
| avio_w8(pb, 6); |
| avio_put_str16le(pb, asf->languages[i]); |
| } |
| end_header(pb, hpos2); |
| |
| for (n = 0; n < s->nb_streams; n++) { |
| int64_t es_pos; |
| if (asf->streams[n].stream_language_index > 127) |
| continue; |
| es_pos = put_header(pb, &ff_asf_extended_stream_properties_object); |
| avio_wl64(pb, 0); /* start time */ |
| avio_wl64(pb, 0); /* end time */ |
| avio_wl32(pb, s->streams[n]->codec->bit_rate); /* data bitrate bps */ |
| avio_wl32(pb, 5000); /* buffer size ms */ |
| avio_wl32(pb, 0); /* initial buffer fullness */ |
| avio_wl32(pb, s->streams[n]->codec->bit_rate); /* peak data bitrate */ |
| avio_wl32(pb, 5000); /* maximum buffer size ms */ |
| avio_wl32(pb, 0); /* max initial buffer fullness */ |
| avio_wl32(pb, 0); /* max object size */ |
| avio_wl32(pb, (!asf->is_streamed && pb->seekable) << 1); /* flags - seekable */ |
| avio_wl16(pb, n + 1); /* stream number */ |
| avio_wl16(pb, asf->streams[n].stream_language_index); /* language id index */ |
| avio_wl64(pb, 0); /* avg time per frame */ |
| avio_wl16(pb, 0); /* stream name count */ |
| avio_wl16(pb, 0); /* payload extension system count */ |
| end_header(pb, es_pos); |
| } |
| } |
| if (has_aspect_ratio) { |
| int64_t hpos2; |
| hpos2 = put_header(pb, &ff_asf_metadata_header); |
| avio_wl16(pb, 2 * has_aspect_ratio); |
| for (n = 0; n < s->nb_streams; n++) { |
| enc = s->streams[n]->codec; |
| if ( enc->codec_type == AVMEDIA_TYPE_VIDEO |
| && enc->sample_aspect_ratio.num > 0 |
| && enc->sample_aspect_ratio.den > 0) { |
| AVRational sar = enc->sample_aspect_ratio; |
| avio_wl16(pb, 0); |
| // the stream number is set like this below |
| avio_wl16(pb, n + 1); |
| avio_wl16(pb, 26); // name_len |
| avio_wl16(pb, 3); // value_type |
| avio_wl32(pb, 4); // value_len |
| avio_put_str16le(pb, "AspectRatioX"); |
| avio_wl32(pb, sar.num); |
| avio_wl16(pb, 0); |
| // the stream number is set like this below |
| avio_wl16(pb, n + 1); |
| avio_wl16(pb, 26); // name_len |
| avio_wl16(pb, 3); // value_type |
| avio_wl32(pb, 4); // value_len |
| avio_put_str16le(pb, "AspectRatioY"); |
| avio_wl32(pb, sar.den); |
| } |
| } |
| end_header(pb, hpos2); |
| } |
| { |
| int64_t pos1; |
| pos1 = avio_tell(pb); |
| avio_seek(pb, hpos + 42, SEEK_SET); |
| avio_wl32(pb, pos1 - hpos - 46); |
| avio_seek(pb, pos1, SEEK_SET); |
| } |
| end_header(pb, hpos); |
| |
| /* title and other infos */ |
| if (has_title) { |
| int len; |
| uint8_t *buf; |
| AVIOContext *dyn_buf; |
| |
| if (avio_open_dyn_buf(&dyn_buf) < 0) |
| return AVERROR(ENOMEM); |
| |
| hpos = put_header(pb, &ff_asf_comment_header); |
| |
| for (n = 0; n < FF_ARRAY_ELEMS(tags); n++) { |
| len = tags[n] ? avio_put_str16le(dyn_buf, tags[n]->value) : 0; |
| avio_wl16(pb, len); |
| } |
| len = avio_close_dyn_buf(dyn_buf, &buf); |
| avio_write(pb, buf, len); |
| av_freep(&buf); |
| end_header(pb, hpos); |
| } |
| if (metadata_count) { |
| AVDictionaryEntry *tag = NULL; |
| hpos = put_header(pb, &ff_asf_extended_content_header); |
| avio_wl16(pb, metadata_count); |
| while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) { |
| put_str16(pb, tag->key); |
| avio_wl16(pb, 0); |
| put_str16(pb, tag->value); |
| } |
| end_header(pb, hpos); |
| } |
| /* chapters using ASF markers */ |
| if (!asf->is_streamed && s->nb_chapters) { |
| int ret; |
| if ((ret = asf_write_markers(s)) < 0) |
| return ret; |
| } |
| /* 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 = 1; |
| |
| switch (enc->codec_type) { |
| case AVMEDIA_TYPE_AUDIO: |
| wav_extra_size = 0; |
| extra_size = 18 + wav_extra_size; |
| extra_size2 = 8; |
| break; |
| default: |
| case AVMEDIA_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 == AVMEDIA_TYPE_AUDIO) { |
| ff_put_guid(pb, &ff_asf_audio_stream); |
| ff_put_guid(pb, &ff_asf_audio_conceal_spread); |
| } else { |
| ff_put_guid(pb, &ff_asf_video_stream); |
| ff_put_guid(pb, &ff_asf_video_conceal_none); |
| } |
| avio_wl64(pb, 0); /* ??? */ |
| es_pos = avio_tell(pb); |
| avio_wl32(pb, extra_size); /* wav header len */ |
| avio_wl32(pb, extra_size2); /* additional data len */ |
| avio_wl16(pb, n + 1); /* stream number */ |
| avio_wl32(pb, 0); /* ??? */ |
| |
| if (enc->codec_type == AVMEDIA_TYPE_AUDIO) { |
| /* WAVEFORMATEX header */ |
| int wavsize = ff_put_wav_header(pb, enc, FF_PUT_WAV_HEADER_FORCE_WAVEFORMATEX); |
| |
| if (wavsize < 0) |
| return -1; |
| if (wavsize != extra_size) { |
| cur_pos = avio_tell(pb); |
| avio_seek(pb, es_pos, SEEK_SET); |
| avio_wl32(pb, wavsize); /* wav header len */ |
| avio_seek(pb, cur_pos, SEEK_SET); |
| } |
| /* ERROR Correction */ |
| avio_w8(pb, 0x01); |
| if (enc->codec_id == AV_CODEC_ID_ADPCM_G726 || !enc->block_align) { |
| avio_wl16(pb, 0x0190); |
| avio_wl16(pb, 0x0190); |
| } else { |
| avio_wl16(pb, enc->block_align); |
| avio_wl16(pb, enc->block_align); |
| } |
| avio_wl16(pb, 0x01); |
| avio_w8(pb, 0x00); |
| } else { |
| avio_wl32(pb, enc->width); |
| avio_wl32(pb, enc->height); |
| avio_w8(pb, 2); /* ??? */ |
| avio_wl16(pb, 40 + enc->extradata_size); /* size */ |
| |
| /* BITMAPINFOHEADER header */ |
| ff_put_bmp_header(pb, enc, ff_codec_bmp_tags, 1, 0); |
| } |
| end_header(pb, hpos); |
| } |
| |
| /* media comments */ |
| |
| hpos = put_header(pb, &ff_asf_codec_comment_header); |
| ff_put_guid(pb, &ff_asf_codec_comment1_header); |
| avio_wl32(pb, s->nb_streams); |
| for (n = 0; n < s->nb_streams; n++) { |
| const AVCodecDescriptor *codec_desc; |
| const char *desc; |
| |
| enc = s->streams[n]->codec; |
| codec_desc = avcodec_descriptor_get(enc->codec_id); |
| |
| if (enc->codec_type == AVMEDIA_TYPE_AUDIO) |
| avio_wl16(pb, 2); |
| else if (enc->codec_type == AVMEDIA_TYPE_VIDEO) |
| avio_wl16(pb, 1); |
| else |
| avio_wl16(pb, -1); |
| |
| if (enc->codec_id == AV_CODEC_ID_WMAV2) |
| desc = "Windows Media Audio V8"; |
| else |
| desc = codec_desc ? codec_desc->name : NULL; |
| |
| if (desc) { |
| AVIOContext *dyn_buf; |
| uint8_t *buf; |
| int len; |
| |
| if (avio_open_dyn_buf(&dyn_buf) < 0) |
| return AVERROR(ENOMEM); |
| |
| avio_put_str16le(dyn_buf, desc); |
| len = avio_close_dyn_buf(dyn_buf, &buf); |
| avio_wl16(pb, len / 2); // "number of characters" = length in bytes / 2 |
| |
| avio_write(pb, buf, len); |
| av_freep(&buf); |
| } else |
| avio_wl16(pb, 0); |
| |
| avio_wl16(pb, 0); /* no parameters */ |
| |
| /* id */ |
| if (enc->codec_type == AVMEDIA_TYPE_AUDIO) { |
| avio_wl16(pb, 2); |
| avio_wl16(pb, enc->codec_tag); |
| } else { |
| avio_wl16(pb, 4); |
| avio_wl32(pb, enc->codec_tag); |
| } |
| if (!enc->codec_tag) |
| return -1; |
| } |
| end_header(pb, hpos); |
| |
| /* patch the header size fields */ |
| |
| cur_pos = avio_tell(pb); |
| header_size = cur_pos - header_offset; |
| if (asf->is_streamed) { |
| header_size += 8 + 30 + DATA_HEADER_SIZE; |
| |
| avio_seek(pb, header_offset - 10 - 30, SEEK_SET); |
| avio_wl16(pb, header_size); |
| avio_seek(pb, header_offset - 2 - 30, SEEK_SET); |
| avio_wl16(pb, header_size); |
| |
| header_size -= 8 + 30 + DATA_HEADER_SIZE; |
| } |
| header_size += 24 + 6; |
| avio_seek(pb, header_offset - 14, SEEK_SET); |
| avio_wl64(pb, header_size); |
| avio_seek(pb, cur_pos, SEEK_SET); |
| |
| /* movie chunk, followed by packets of packet_size */ |
| asf->data_offset = cur_pos; |
| ff_put_guid(pb, &ff_asf_data_header); |
| avio_wl64(pb, data_chunk_size); |
| ff_put_guid(pb, &ff_asf_my_guid); |
| avio_wl64(pb, asf->nb_packets); /* nb packets */ |
| avio_w8(pb, 1); /* ??? */ |
| avio_w8(pb, 1); /* ??? */ |
| return 0; |
| } |
| |
| static int asf_write_header(AVFormatContext *s) |
| { |
| ASFContext *asf = s->priv_data; |
| |
| s->packet_size = asf->packet_size; |
| s->max_interleave_delta = 0; |
| asf->nb_packets = 0; |
| |
| if (s->nb_streams > 127) { |
| av_log(s, AV_LOG_ERROR, "ASF can only handle 127 streams\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| asf->index_ptr = av_malloc(sizeof(ASFIndex) * ASF_INDEX_BLOCK); |
| if (!asf->index_ptr) |
| return AVERROR(ENOMEM); |
| asf->nb_index_memory_alloc = ASF_INDEX_BLOCK; |
| asf->maximum_packet = 0; |
| |
| /* the data-chunk-size has to be 50 (DATA_HEADER_SIZE), which is |
| * data_size - asf->data_offset at the moment this function is done. |
| * It is needed to use asf as a streamable format. */ |
| if (asf_write_header1(s, 0, DATA_HEADER_SIZE) < 0) { |
| //av_free(asf); |
| av_freep(&asf->index_ptr); |
| return -1; |
| } |
| |
| avio_flush(s->pb); |
| |
| asf->packet_nb_payloads = 0; |
| asf->packet_timestamp_start = -1; |
| asf->packet_timestamp_end = -1; |
| ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1, |
| NULL, NULL, NULL, NULL); |
| |
| if (s->avoid_negative_ts < 0) |
| s->avoid_negative_ts = 1; |
| |
| 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 sendtime, unsigned duration, |
| int nb_payloads, int padsize) |
| { |
| ASFContext *asf = s->priv_data; |
| AVIOContext *pb = s->pb; |
| int ppi_size, i; |
| int64_t start = avio_tell(pb); |
| |
| int iLengthTypeFlags = ASF_PPI_LENGTH_TYPE_FLAGS; |
| |
| padsize -= PACKET_HEADER_MIN_SIZE; |
| if (asf->multi_payloads_present) |
| padsize--; |
| av_assert0(padsize >= 0); |
| |
| avio_w8(pb, ASF_PACKET_ERROR_CORRECTION_FLAGS); |
| for (i = 0; i < ASF_PACKET_ERROR_CORRECTION_DATA_SIZE; i++) |
| avio_w8(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; |
| } |
| avio_w8(pb, iLengthTypeFlags); |
| |
| avio_w8(pb, ASF_PPI_PROPERTY_FLAGS); |
| |
| if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_WORD) |
| avio_wl16(pb, padsize - 2); |
| if (iLengthTypeFlags & ASF_PPI_FLAG_PADDING_LENGTH_FIELD_IS_BYTE) |
| avio_w8(pb, padsize - 1); |
| |
| avio_wl32(pb, sendtime); |
| avio_wl16(pb, duration); |
| if (asf->multi_payloads_present) |
| avio_w8(pb, nb_payloads | ASF_PAYLOAD_FLAGS); |
| |
| ppi_size = avio_tell(pb) - start; |
| |
| return ppi_size; |
| } |
| |
| static void flush_packet(AVFormatContext *s) |
| { |
| ASFContext *asf = s->priv_data; |
| int packet_hdr_size, packet_filled_size; |
| |
| av_assert0(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 = asf->packet_size - asf->packet_size_left; |
| av_assert0(packet_hdr_size <= asf->packet_size_left); |
| memset(asf->packet_buf + packet_filled_size, 0, asf->packet_size_left); |
| |
| avio_write(s->pb, asf->packet_buf, s->packet_size - packet_hdr_size); |
| |
| avio_flush(s->pb); |
| asf->nb_packets++; |
| asf->packet_nb_payloads = 0; |
| asf->packet_timestamp_start = -1; |
| asf->packet_timestamp_end = -1; |
| ffio_init_context(&asf->pb, asf->packet_buf, s->packet_size, 1, |
| NULL, NULL, NULL, NULL); |
| } |
| |
| static void put_payload_header(AVFormatContext *s, ASFStream *stream, |
| int64_t presentation_time, int m_obj_size, |
| int m_obj_offset, int payload_len, int flags) |
| { |
| ASFContext *asf = s->priv_data; |
| AVIOContext *pb = &asf->pb; |
| int val; |
| |
| val = stream->num; |
| if (flags & AV_PKT_FLAG_KEY) |
| val |= ASF_PL_FLAG_KEY_FRAME; |
| avio_w8(pb, val); |
| |
| avio_w8(pb, stream->seq); // Media object number |
| avio_wl32(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. |
| avio_w8(pb, ASF_PAYLOAD_REPLICATED_DATA_LENGTH); |
| |
| avio_wl32(pb, m_obj_size); // Replicated Data - Media Object Size |
| avio_wl32(pb, (uint32_t) presentation_time); // Replicated Data - Presentation Time |
| |
| if (asf->multi_payloads_present) { |
| avio_wl16(pb, payload_len); // payload length |
| } |
| } |
| |
| static void put_frame(AVFormatContext *s, ASFStream *stream, AVStream *avst, |
| int64_t 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) { |
| const int multi_payload_constant = (asf->packet_size - MULTI_PAYLOAD_HEADERS); |
| asf->multi_payloads_present = (payload_len < multi_payload_constant); |
| |
| asf->packet_size_left = asf->packet_size; |
| if (asf->multi_payloads_present) { |
| frag_len1 = multi_payload_constant - 1; |
| } else { |
| frag_len1 = asf->packet_size - SINGLE_PAYLOAD_HEADERS; |
| } |
| 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 == AVMEDIA_TYPE_AUDIO) { |
| flush_packet(s); |
| continue; |
| } |
| if (asf->packet_timestamp_start > INT64_MAX - UINT16_MAX || |
| timestamp > asf->packet_timestamp_start + UINT16_MAX) { |
| 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); |
| avio_write(&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); |
| else if (asf->packet_nb_payloads == ASF_PAYLOADS_PER_PACKET) |
| flush_packet(s); |
| } |
| stream->seq++; |
| } |
| |
| static int update_index(AVFormatContext *s, int start_sec, |
| uint32_t packet_number, uint16_t packet_count, |
| uint64_t packet_offset) |
| { |
| ASFContext *asf = s->priv_data; |
| |
| if (start_sec > asf->next_start_sec) { |
| int i; |
| |
| if (!asf->next_start_sec) { |
| asf->next_packet_number = packet_number; |
| asf->next_packet_count = packet_count; |
| asf->next_packet_offset = packet_offset; |
| } |
| |
| if (start_sec > asf->nb_index_memory_alloc) { |
| int err; |
| asf->nb_index_memory_alloc = (start_sec + ASF_INDEX_BLOCK) & ~(ASF_INDEX_BLOCK - 1); |
| if ((err = av_reallocp_array(&asf->index_ptr, |
| asf->nb_index_memory_alloc, |
| sizeof(*asf->index_ptr))) < 0) { |
| asf->nb_index_memory_alloc = 0; |
| return err; |
| } |
| } |
| for (i = asf->next_start_sec; i < start_sec; i++) { |
| asf->index_ptr[i].packet_number = asf->next_packet_number; |
| asf->index_ptr[i].packet_count = asf->next_packet_count; |
| asf->index_ptr[i].send_time = asf->next_start_sec * INT64_C(10000000); |
| asf->index_ptr[i].offset = asf->next_packet_offset; |
| |
| } |
| } |
| asf->maximum_packet = FFMAX(asf->maximum_packet, packet_count); |
| asf->next_packet_number = packet_number; |
| asf->next_packet_count = packet_count; |
| asf->next_packet_offset = packet_offset; |
| asf->next_start_sec = start_sec; |
| |
| return 0; |
| } |
| |
| static int asf_write_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| ASFContext *asf = s->priv_data; |
| AVIOContext *pb = s->pb; |
| ASFStream *stream; |
| AVCodecContext *codec; |
| uint32_t packet_number; |
| int64_t pts; |
| int start_sec; |
| int flags = pkt->flags; |
| int ret; |
| uint64_t offset = avio_tell(pb); |
| |
| codec = s->streams[pkt->stream_index]->codec; |
| stream = &asf->streams[pkt->stream_index]; |
| |
| if (codec->codec_type == AVMEDIA_TYPE_AUDIO) |
| flags &= ~AV_PKT_FLAG_KEY; |
| |
| pts = (pkt->pts != AV_NOPTS_VALUE) ? pkt->pts : pkt->dts; |
| av_assert0(pts != AV_NOPTS_VALUE); |
| if ( pts < - PREROLL_TIME |
| || pts > (INT_MAX-3)/10000LL * ASF_INDEXED_INTERVAL - PREROLL_TIME) { |
| av_log(s, AV_LOG_ERROR, "input pts %"PRId64" is invalid\n", pts); |
| return AVERROR(EINVAL); |
| } |
| pts *= 10000; |
| asf->duration = FFMAX(asf->duration, pts + pkt->duration * 10000); |
| |
| packet_number = asf->nb_packets; |
| put_frame(s, stream, s->streams[pkt->stream_index], |
| pkt->dts, pkt->data, pkt->size, flags); |
| |
| start_sec = (int)((PREROLL_TIME * 10000 + pts + ASF_INDEXED_INTERVAL - 1) |
| / ASF_INDEXED_INTERVAL); |
| |
| /* check index */ |
| if ((!asf->is_streamed) && (flags & AV_PKT_FLAG_KEY)) { |
| uint16_t packet_count = asf->nb_packets - packet_number; |
| ret = update_index(s, start_sec, packet_number, packet_count, offset); |
| if (ret < 0) |
| return ret; |
| } |
| asf->end_sec = start_sec; |
| |
| return 0; |
| } |
| |
| static int asf_write_index(AVFormatContext *s, const ASFIndex *index, |
| uint16_t max, uint32_t count) |
| { |
| AVIOContext *pb = s->pb; |
| int i; |
| |
| ff_put_guid(pb, &ff_asf_simple_index_header); |
| avio_wl64(pb, 24 + 16 + 8 + 4 + 4 + (4 + 2) * count); |
| ff_put_guid(pb, &ff_asf_my_guid); |
| avio_wl64(pb, ASF_INDEXED_INTERVAL); |
| avio_wl32(pb, max); |
| avio_wl32(pb, count); |
| for (i = 0; i < count; i++) { |
| avio_wl32(pb, index[i].packet_number); |
| avio_wl16(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; |
| int ret; |
| |
| /* flush the current packet */ |
| if (asf->pb.buf_ptr > asf->pb.buffer) |
| flush_packet(s); |
| |
| /* write index */ |
| data_size = avio_tell(s->pb); |
| if (!asf->is_streamed && asf->next_start_sec) { |
| if ((ret = update_index(s, asf->end_sec + 1, 0, 0, 0)) < 0) |
| return ret; |
| asf_write_index(s, asf->index_ptr, asf->maximum_packet, asf->next_start_sec); |
| } |
| avio_flush(s->pb); |
| |
| if (asf->is_streamed || !s->pb->seekable) { |
| put_chunk(s, 0x4524, 0, 0); /* end of stream */ |
| } else { |
| /* rewrite an updated header */ |
| file_size = avio_tell(s->pb); |
| avio_seek(s->pb, 0, SEEK_SET); |
| asf_write_header1(s, file_size, data_size - asf->data_offset); |
| } |
| |
| av_freep(&asf->index_ptr); |
| return 0; |
| } |
| |
| static const AVOption asf_options[] = { |
| { "packet_size", "Packet size", offsetof(ASFContext, packet_size), AV_OPT_TYPE_INT, {.i64 = 3200}, PACKET_SIZE_MIN, PACKET_SIZE_MAX, AV_OPT_FLAG_ENCODING_PARAM }, |
| { NULL }, |
| }; |
| |
| #if CONFIG_ASF_MUXER |
| static const AVClass asf_muxer_class = { |
| .class_name = "ASF muxer", |
| .item_name = av_default_item_name, |
| .option = asf_options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| AVOutputFormat ff_asf_muxer = { |
| .name = "asf", |
| .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"), |
| .mime_type = "video/x-ms-asf", |
| .extensions = "asf,wmv,wma", |
| .priv_data_size = sizeof(ASFContext), |
| .audio_codec = AV_CODEC_ID_WMAV2, |
| .video_codec = AV_CODEC_ID_MSMPEG4V3, |
| .write_header = asf_write_header, |
| .write_packet = asf_write_packet, |
| .write_trailer = asf_write_trailer, |
| .flags = AVFMT_GLOBALHEADER, |
| .codec_tag = (const AVCodecTag * const []) { |
| codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0 |
| }, |
| .priv_class = &asf_muxer_class, |
| }; |
| #endif /* CONFIG_ASF_MUXER */ |
| |
| #if CONFIG_ASF_STREAM_MUXER |
| static const AVClass asf_stream_muxer_class = { |
| .class_name = "ASF stream muxer", |
| .item_name = av_default_item_name, |
| .option = asf_options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| AVOutputFormat ff_asf_stream_muxer = { |
| .name = "asf_stream", |
| .long_name = NULL_IF_CONFIG_SMALL("ASF (Advanced / Active Streaming Format)"), |
| .mime_type = "video/x-ms-asf", |
| .extensions = "asf,wmv,wma", |
| .priv_data_size = sizeof(ASFContext), |
| .audio_codec = AV_CODEC_ID_WMAV2, |
| .video_codec = AV_CODEC_ID_MSMPEG4V3, |
| .write_header = asf_write_stream_header, |
| .write_packet = asf_write_packet, |
| .write_trailer = asf_write_trailer, |
| .flags = AVFMT_GLOBALHEADER, |
| .codec_tag = (const AVCodecTag * const []) { |
| codec_asf_bmp_tags, ff_codec_bmp_tags, ff_codec_wav_tags, 0 |
| }, |
| .priv_class = &asf_stream_muxer_class, |
| }; |
| #endif /* CONFIG_ASF_STREAM_MUXER */ |
