diff options
Diffstat (limited to 'ffmpeg1/libavformat/wtvenc.c')
| -rw-r--r-- | ffmpeg1/libavformat/wtvenc.c | 810 |
1 files changed, 0 insertions, 810 deletions
diff --git a/ffmpeg1/libavformat/wtvenc.c b/ffmpeg1/libavformat/wtvenc.c deleted file mode 100644 index 22917a4..0000000 --- a/ffmpeg1/libavformat/wtvenc.c +++ /dev/null @@ -1,810 +0,0 @@ -/* - * Windows Television (WTV) muxer - * Copyright (c) 2011 Zhentan Feng <spyfeng at gmail dot com> - * Copyright (c) 2011 Peter Ross <pross@xvid.org> - * 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 - */ - -/** - * @file - * Windows Television (WTV) demuxer - * @author Zhentan Feng <spyfeng at gmail dot com> - */ - -#include "libavutil/intreadwrite.h" -#include "libavutil/avassert.h" -#include "avformat.h" -#include "internal.h" -#include "wtv.h" -#include "asf.h" - -#define WTV_BIGSECTOR_SIZE (1 << WTV_BIGSECTOR_BITS) -#define INDEX_BASE 0x2 -#define MAX_NB_INDEX 10 - -/* declare utf16le strings */ -#define _ , 0, -static const uint8_t timeline_table_0_header_events[] = - {'t'_'i'_'m'_'e'_'l'_'i'_'n'_'e'_'.'_'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'h'_'e'_'a'_'d'_'e'_'r'_'.'_'E'_'v'_'e'_'n'_'t'_'s', 0}; -static const uint8_t table_0_header_legacy_attrib[] = - {'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'h'_'e'_'a'_'d'_'e'_'r'_'.'_'l'_'e'_'g'_'a'_'c'_'y'_'_'_'a'_'t'_'t'_'r'_'i'_'b', 0}; -static const uint8_t table_0_redirector_legacy_attrib[] = - {'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'r'_'e'_'d'_'i'_'r'_'e'_'c'_'t'_'o'_'r'_'.'_'l'_'e'_'g'_'a'_'c'_'y'_'_'_'a'_'t'_'t'_'r'_'i'_'b', 0}; -static const uint8_t table_0_header_time[] = - {'t'_'a'_'b'_'l'_'e'_'.'_'0'_'.'_'h'_'e'_'a'_'d'_'e'_'r'_'.'_'t'_'i'_'m'_'e', 0}; -static const uint8_t legacy_attrib[] = - {'l'_'e'_'g'_'a'_'c'_'y'_'_'_'a'_'t'_'t'_'r'_'i'_'b', 0}; -#undef _ - -static const ff_asf_guid sub_wtv_guid = - {0x8C,0xC3,0xD2,0xC2,0x7E,0x9A,0xDA,0x11,0x8B,0xF7,0x00,0x07,0xE9,0x5E,0xAD,0x8D}; - -enum WtvFileIndex { - WTV_TIMELINE_TABLE_0_HEADER_EVENTS = 0, - WTV_TIMELINE_TABLE_0_ENTRIES_EVENTS, - WTV_TIMELINE, - WTV_TABLE_0_HEADER_LEGACY_ATTRIB, - WTV_TABLE_0_ENTRIES_LEGACY_ATTRIB, - WTV_TABLE_0_REDIRECTOR_LEGACY_ATTRIB, - WTV_TABLE_0_HEADER_TIME, - WTV_TABLE_0_ENTRIES_TIME, - WTV_FILES -}; - -typedef struct { - int64_t length; - const void *header; - int depth; - int first_sector; -} WtvFile; - -typedef struct { - int64_t pos; - int64_t serial; - const ff_asf_guid * guid; - int stream_id; -} WtvChunkEntry; - -typedef struct { - int64_t serial; - int64_t value; -} WtvSyncEntry; - -typedef struct { - int64_t timeline_start_pos; - WtvFile file[WTV_FILES]; - int64_t serial; /** chunk serial number */ - int64_t last_chunk_pos; /** last chunk position */ - int64_t last_timestamp_pos; /** last timestamp chunk position */ - int64_t first_index_pos; /** first index_chunk position */ - - WtvChunkEntry index[MAX_NB_INDEX]; - int nb_index; - int first_video_flag; - - WtvSyncEntry *st_pairs; /* (serial, timestamp) pairs */ - int nb_st_pairs; - WtvSyncEntry *sp_pairs; /* (serial, position) pairs */ - int nb_sp_pairs; - - int64_t last_pts; - int64_t last_serial; - - AVPacket thumbnail; -} WtvContext; - - -static void add_serial_pair(WtvSyncEntry ** list, int * count, int64_t serial, int64_t value) -{ - int new_count = *count + 1; - WtvSyncEntry *new_list = av_realloc(*list, new_count * sizeof(WtvSyncEntry)); - if (!new_list) - return; - new_list[*count] = (WtvSyncEntry){serial, value}; - *list = new_list; - *count = new_count; -} - -typedef int WTVHeaderWriteFunc(AVIOContext *pb); - -typedef struct { - const uint8_t *header; - int header_size; - WTVHeaderWriteFunc *write_header; -} WTVRootEntryTable; - -static int write_pad(AVIOContext *pb, int size) -{ - for (; size > 0; size--) - avio_w8(pb, 0); - return 0; -} - -static const ff_asf_guid *get_codec_guid(enum AVCodecID id, const AVCodecGuid *av_guid) -{ - int i; - for (i = 0; av_guid[i].id != AV_CODEC_ID_NONE; i++) { - if (id == av_guid[i].id) - return &(av_guid[i].guid); - } - return NULL; -} - -/** - * Write chunk header. If header chunk (0x80000000 set) then add to list of header chunks - */ -static void write_chunk_header(AVFormatContext *s, const ff_asf_guid *guid, int length, int stream_id) -{ - WtvContext *wctx = s->priv_data; - AVIOContext *pb = s->pb; - - wctx->last_chunk_pos = avio_tell(pb) - wctx->timeline_start_pos; - ff_put_guid(pb, guid); - avio_wl32(pb, 32 + length); - avio_wl32(pb, stream_id); - avio_wl64(pb, wctx->serial); - - if ((stream_id & 0x80000000) && guid != &ff_index_guid) { - WtvChunkEntry *t = wctx->index + wctx->nb_index; - av_assert0(wctx->nb_index < MAX_NB_INDEX); - t->pos = wctx->last_chunk_pos; - t->serial = wctx->serial; - t->guid = guid; - t->stream_id = stream_id & 0x3FFFFFFF; - wctx->nb_index++; - } -} - -static void write_chunk_header2(AVFormatContext *s, const ff_asf_guid *guid, int stream_id) -{ - WtvContext *wctx = s->priv_data; - AVIOContext *pb = s->pb; - - int64_t last_chunk_pos = wctx->last_chunk_pos; - write_chunk_header(s, guid, 0, stream_id); // length updated later - avio_wl64(pb, last_chunk_pos); -} - -static void finish_chunk_noindex(AVFormatContext *s) -{ - WtvContext *wctx = s->priv_data; - AVIOContext *pb = s->pb; - - // update the chunk_len field and pad. - int64_t chunk_len = avio_tell(pb) - (wctx->last_chunk_pos + wctx->timeline_start_pos); - avio_seek(pb, -(chunk_len - 16), SEEK_CUR); - avio_wl32(pb, chunk_len); - avio_seek(pb, chunk_len - (16 + 4), SEEK_CUR); - - write_pad(pb, WTV_PAD8(chunk_len) - chunk_len); - wctx->serial++; -} - -static void write_index(AVFormatContext *s) -{ - AVIOContext *pb = s->pb; - WtvContext *wctx = s->priv_data; - int i; - - write_chunk_header2(s, &ff_index_guid, 0x80000000); - avio_wl32(pb, 0); - avio_wl32(pb, 0); - - for (i = 0; i < wctx->nb_index; i++) { - WtvChunkEntry *t = wctx->index + i; - ff_put_guid(pb, t->guid); - avio_wl64(pb, t->pos); - avio_wl32(pb, t->stream_id); - avio_wl32(pb, 0); // checksum? - avio_wl64(pb, t->serial); - } - wctx->nb_index = 0; // reset index - finish_chunk_noindex(s); - - if (!wctx->first_index_pos) - wctx->first_index_pos = wctx->last_chunk_pos; -} - -static void finish_chunk(AVFormatContext *s) -{ - WtvContext *wctx = s->priv_data; - finish_chunk_noindex(s); - if (wctx->nb_index == MAX_NB_INDEX) - write_index(s); -} - -static int write_stream_codec_info(AVFormatContext *s, AVStream *st) -{ - WtvContext *wctx = s->priv_data; - const ff_asf_guid *g, *media_type, *format_type; - AVIOContext *pb = s->pb; - int64_t hdr_pos_start; - int hdr_size = 0; - - if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { - g = get_codec_guid(st->codec->codec_id, ff_video_guids); - media_type = &ff_mediatype_video; - format_type = &ff_format_mpeg2_video; - } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { - g = get_codec_guid(st->codec->codec_id, ff_codec_wav_guids); - media_type = &ff_mediatype_audio; - format_type = &ff_format_waveformatex; - } else { - av_log(s, AV_LOG_ERROR, "unknown codec_type (0x%x)\n", st->codec->codec_type); - return -1; - } - - if (g == NULL) { - av_log(s, AV_LOG_ERROR, "can't get video codec_id (0x%x) guid.\n", st->codec->codec_id); - return -1; - } - - ff_put_guid(pb, media_type); // mediatype - ff_put_guid(pb, &ff_mediasubtype_cpfilters_processed); // subtype - write_pad(pb, 12); - ff_put_guid(pb,&ff_format_cpfilters_processed); // format type - avio_wl32(pb, 0); // size - - hdr_pos_start = avio_tell(pb); - if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) { - if (wctx->first_video_flag) { - write_pad(pb, 216); //The size is sensitive. - wctx->first_video_flag = 0; - } else { - write_pad(pb, 72); // aspect ratio - ff_put_bmp_header(pb, st->codec, ff_codec_bmp_tags, 0); - } - } else { - ff_put_wav_header(pb, st->codec); - } - hdr_size = avio_tell(pb) - hdr_pos_start; - - // seek back write hdr_size - avio_seek(pb, -(hdr_size + 4), SEEK_CUR); - avio_wl32(pb, hdr_size + 32); - avio_seek(pb, hdr_size, SEEK_CUR); - ff_put_guid(pb, g); // actual_subtype - ff_put_guid(pb, format_type); // actual_formattype - - return 0; -} - -static int write_stream_codec(AVFormatContext *s, AVStream * st) -{ - AVIOContext *pb = s->pb; - int ret; - write_chunk_header2(s, &ff_stream1_guid, 0x80000000 | 0x01); - - avio_wl32(pb, 0x01); - write_pad(pb, 4); - write_pad(pb, 4); - - ret = write_stream_codec_info(s, st); - if (ret < 0) { - av_log(s, AV_LOG_ERROR, "write stream codec info failed codec_type(0x%x)\n", st->codec->codec_type); - return -1; - } - - finish_chunk(s); - return 0; -} - -static void write_sync(AVFormatContext *s) -{ - AVIOContext *pb = s->pb; - WtvContext *wctx = s->priv_data; - int64_t last_chunk_pos = wctx->last_chunk_pos; - - write_chunk_header(s, &ff_sync_guid, 0x18, 0); - avio_wl64(pb, wctx->first_index_pos); - avio_wl64(pb, wctx->last_timestamp_pos); - avio_wl64(pb, 0); - - finish_chunk(s); - add_serial_pair(&wctx->sp_pairs, &wctx->nb_sp_pairs, wctx->serial, wctx->last_chunk_pos); - - wctx->last_chunk_pos = last_chunk_pos; -} - -static int write_stream_data(AVFormatContext *s, AVStream *st) -{ - AVIOContext *pb = s->pb; - int ret; - - write_chunk_header2(s, &ff_SBE2_STREAM_DESC_EVENT, 0x80000000 | (st->index + INDEX_BASE)); - avio_wl32(pb, 0x00000001); - avio_wl32(pb, st->index + INDEX_BASE); //stream_id - avio_wl32(pb, 0x00000001); - write_pad(pb, 8); - - ret = write_stream_codec_info(s, st); - if (ret < 0) { - av_log(s, AV_LOG_ERROR, "write stream codec info failed codec_type(0x%x)\n", st->codec->codec_type); - return -1; - } - finish_chunk(s); - - avpriv_set_pts_info(st, 64, 1, 10000000); - - return 0; -} - -static int write_header(AVFormatContext *s) -{ - AVIOContext *pb = s->pb; - WtvContext *wctx = s->priv_data; - int i, pad, ret; - AVStream *st; - - wctx->last_chunk_pos = -1; - wctx->last_timestamp_pos = -1; - - ff_put_guid(pb, &ff_wtv_guid); - ff_put_guid(pb, &sub_wtv_guid); - - avio_wl32(pb, 0x01); - avio_wl32(pb, 0x02); - avio_wl32(pb, 1 << WTV_SECTOR_BITS); - avio_wl32(pb, 1 << WTV_BIGSECTOR_BITS); - - //write initial root fields - avio_wl32(pb, 0); // root_size, update later - write_pad(pb, 4); - avio_wl32(pb, 0); // root_sector, update it later. - - write_pad(pb, 32); - avio_wl32(pb, 0); // file ends pointer, update it later. - - pad = (1 << WTV_SECTOR_BITS) - avio_tell(pb); - write_pad(pb, pad); - - wctx->timeline_start_pos = avio_tell(pb); - - wctx->serial = 1; - wctx->last_chunk_pos = -1; - wctx->first_video_flag = 1; - - for (i = 0; i < s->nb_streams; i++) { - st = s->streams[i]; - if (st->codec->codec_id == AV_CODEC_ID_MJPEG) - continue; - ret = write_stream_codec(s, st); - if (ret < 0) { - av_log(s, AV_LOG_ERROR, "write stream codec failed codec_type(0x%x)\n", st->codec->codec_type); - return -1; - } - if (!i) - write_sync(s); - } - - for (i = 0; i < s->nb_streams; i++) { - st = s->streams[i]; - if (st->codec->codec_id == AV_CODEC_ID_MJPEG) - continue; - ret = write_stream_data(s, st); - if (ret < 0) { - av_log(s, AV_LOG_ERROR, "write stream data failed codec_type(0x%x)\n", st->codec->codec_type); - return -1; - } - } - - if (wctx->nb_index) - write_index(s); - - return 0; -} - -static void write_timestamp(AVFormatContext *s, AVPacket *pkt) -{ - AVIOContext *pb = s->pb; - WtvContext *wctx = s->priv_data; - AVCodecContext *enc = s->streams[pkt->stream_index]->codec; - - write_chunk_header(s, &ff_timestamp_guid, 56, 0x40000000 | (INDEX_BASE + pkt->stream_index)); - write_pad(pb, 8); - avio_wl64(pb, pkt->pts == AV_NOPTS_VALUE ? -1 : pkt->pts); - avio_wl64(pb, pkt->pts == AV_NOPTS_VALUE ? -1 : pkt->pts); - avio_wl64(pb, pkt->pts == AV_NOPTS_VALUE ? -1 : pkt->pts); - avio_wl64(pb, 0); - avio_wl64(pb, enc->codec_type == AVMEDIA_TYPE_VIDEO && (pkt->flags & AV_PKT_FLAG_KEY) ? 1 : 0); - avio_wl64(pb, 0); - - wctx->last_timestamp_pos = wctx->last_chunk_pos; -} - -static int write_packet(AVFormatContext *s, AVPacket *pkt) -{ - AVIOContext *pb = s->pb; - WtvContext *wctx = s->priv_data; - - if (s->streams[pkt->stream_index]->codec->codec_id == AV_CODEC_ID_MJPEG && !wctx->thumbnail.size) { - av_copy_packet(&wctx->thumbnail, pkt); - return 0; - } - - /* emit sync chunk and 'timeline.table.0.entries.Event' record every 50 frames */ - if (wctx->serial - (wctx->nb_sp_pairs ? wctx->sp_pairs[wctx->nb_sp_pairs - 1].serial : 0) >= 50) - write_sync(s); - - /* emit 'table.0.entries.time' record every 500ms */ - if (pkt->pts != AV_NOPTS_VALUE && pkt->pts - (wctx->nb_st_pairs ? wctx->st_pairs[wctx->nb_st_pairs - 1].value : 0) >= 5000000) - add_serial_pair(&wctx->st_pairs, &wctx->nb_st_pairs, wctx->serial, pkt->pts); - - if (pkt->pts != AV_NOPTS_VALUE && pkt->pts > wctx->last_pts) { - wctx->last_pts = pkt->pts; - wctx->last_serial = wctx->serial; - } - - // write timestamp chunk - write_timestamp(s, pkt); - - write_chunk_header(s, &ff_data_guid, pkt->size, INDEX_BASE + pkt->stream_index); - avio_write(pb, pkt->data, pkt->size); - write_pad(pb, WTV_PAD8(pkt->size) - pkt->size); - - wctx->serial++; - avio_flush(pb); - return 0; -} - -static int write_table0_header_events(AVIOContext *pb) -{ - avio_wl32(pb, 0x10); - write_pad(pb, 84); - avio_wl64(pb, 0x32); - return 96; -} - -static int write_table0_header_legacy_attrib(AVIOContext *pb) -{ - int pad = 0; - avio_wl32(pb, 0xFFFFFFFF); - write_pad(pb, 12); - avio_write(pb, legacy_attrib, sizeof(legacy_attrib)); - pad = WTV_PAD8(sizeof(legacy_attrib)) - sizeof(legacy_attrib); - write_pad(pb, pad); - write_pad(pb, 32); - return 48 + WTV_PAD8(sizeof(legacy_attrib)); -} - -static int write_table0_header_time(AVIOContext *pb) -{ - avio_wl32(pb, 0x10); - write_pad(pb, 76); - avio_wl64(pb, 0x40); - return 88; -} - -static const WTVRootEntryTable wtv_root_entry_table[] = { - { timeline_table_0_header_events, sizeof(timeline_table_0_header_events), write_table0_header_events}, - { ff_timeline_table_0_entries_Events_le16, sizeof(ff_timeline_table_0_entries_Events_le16), NULL}, - { ff_timeline_le16, sizeof(ff_timeline_le16), NULL}, - { table_0_header_legacy_attrib, sizeof(table_0_header_legacy_attrib), write_table0_header_legacy_attrib}, - { ff_table_0_entries_legacy_attrib_le16, sizeof(ff_table_0_entries_legacy_attrib_le16), NULL}, - { table_0_redirector_legacy_attrib, sizeof(table_0_redirector_legacy_attrib), NULL}, - { table_0_header_time, sizeof(table_0_header_time), write_table0_header_time}, - { ff_table_0_entries_time_le16, sizeof(ff_table_0_entries_time_le16), NULL}, -}; - -static int write_root_table(AVFormatContext *s, int64_t sector_pos) -{ - AVIOContext *pb = s->pb; - WtvContext *wctx = s->priv_data; - int size, pad; - int i; - - const WTVRootEntryTable *h = wtv_root_entry_table; - for (i = 0; i < sizeof(wtv_root_entry_table)/sizeof(WTVRootEntryTable); i++, h++) { - WtvFile *w = &wctx->file[i]; - int filename_padding = WTV_PAD8(h->header_size) - h->header_size; - WTVHeaderWriteFunc *write = h->write_header; - int len = 0; - int64_t len_pos; - - ff_put_guid(pb, &ff_dir_entry_guid); - len_pos = avio_tell(pb); - avio_wl16(pb, 40 + h->header_size + filename_padding + 8); // maybe updated later - write_pad(pb, 6); - avio_wl64(pb, write ? 0 : w->length);// maybe update later - avio_wl32(pb, (h->header_size + filename_padding) >> 1); - write_pad(pb, 4); - - avio_write(pb, h->header, h->header_size); - write_pad(pb, filename_padding); - - if (write) { - len = write(pb); - // update length field - avio_seek(pb, len_pos, SEEK_SET); - avio_wl64(pb, 40 + h->header_size + filename_padding + len); - avio_wl64(pb, len |(1ULL<<62) | (1ULL<<60)); - avio_seek(pb, 8 + h->header_size + filename_padding + len, SEEK_CUR); - } else { - avio_wl32(pb, w->first_sector); - avio_wl32(pb, w->depth); - } - } - - // caculate root table size - size = avio_tell(pb) - sector_pos; - pad = WTV_SECTOR_SIZE- size; - write_pad(pb, pad); - - return size; -} - -static void write_fat(AVIOContext *pb, int start_sector, int nb_sectors, int shift) -{ - int i; - for (i = 0; i < nb_sectors; i++) { - avio_wl32(pb, start_sector + (i << shift)); - } - // pad left sector pointer size - write_pad(pb, WTV_SECTOR_SIZE - ((nb_sectors << 2) % WTV_SECTOR_SIZE)); -} - -static int64_t write_fat_sector(AVFormatContext *s, int64_t start_pos, int nb_sectors, int sector_bits, int depth) -{ - int64_t start_sector = start_pos >> WTV_SECTOR_BITS; - int shift = sector_bits - WTV_SECTOR_BITS; - - int64_t fat = avio_tell(s->pb); - write_fat(s->pb, start_sector, nb_sectors, shift); - - if (depth == 2) { - int64_t start_sector1 = fat >> WTV_SECTOR_BITS; - int nb_sectors1 = ((nb_sectors << 2) + WTV_SECTOR_SIZE - 1) / WTV_SECTOR_SIZE; - int64_t fat1 = avio_tell(s->pb); - - write_fat(s->pb, start_sector1, nb_sectors1, 0); - return fat1; - } - - return fat; -} - -static void write_table_entries_events(AVFormatContext *s) -{ - AVIOContext *pb = s->pb; - WtvContext *wctx = s->priv_data; - int i; - for (i = 0; i < wctx->nb_sp_pairs; i++) { - avio_wl64(pb, wctx->sp_pairs[i].serial); - avio_wl64(pb, wctx->sp_pairs[i].value); - } -} - -static void write_table_entries_time(AVFormatContext *s) -{ - AVIOContext *pb = s->pb; - WtvContext *wctx = s->priv_data; - int i; - for (i = 0; i < wctx->nb_st_pairs; i++) { - avio_wl64(pb, wctx->st_pairs[i].value); - avio_wl64(pb, wctx->st_pairs[i].serial); - } - avio_wl64(pb, wctx->last_pts); - avio_wl64(pb, wctx->last_serial); -} - -static void write_metadata_header(AVIOContext *pb, int type, const char *key, int value_size) -{ - ff_put_guid(pb, &ff_metadata_guid); - avio_wl32(pb, type); - avio_wl32(pb, value_size); - avio_put_str16le(pb, key); -} - -static int metadata_header_size(const char *key) -{ - return 16 + 4 + 4 + strlen(key)*2 + 2; -} - -static void write_tag_int32(AVIOContext *pb, const char *key, int value) -{ - write_metadata_header(pb, 0, key, 4); - avio_wl32(pb, value); -} - -static void write_tag(AVIOContext *pb, const char *key, const char *value) -{ - write_metadata_header(pb, 1, key, strlen(value)*2 + 2); - avio_put_str16le(pb, value); -} - -static int attachment_value_size(const AVPacket *pkt, const AVDictionaryEntry *e) -{ - return strlen("image/jpeg")*2 + 2 + 1 + (e ? strlen(e->value)*2 : 0) + 2 + 4 + pkt->size; -} - -static void write_table_entries_attrib(AVFormatContext *s) -{ - WtvContext *wctx = s->priv_data; - AVIOContext *pb = s->pb; - AVDictionaryEntry *tag = 0; - - //FIXME: translate special tags (e.g. WM/Bitrate) to binary representation - ff_metadata_conv(&s->metadata, ff_asf_metadata_conv, NULL); - while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) - write_tag(pb, tag->key, tag->value); - - if (wctx->thumbnail.size) { - AVStream *st = s->streams[wctx->thumbnail.stream_index]; - tag = av_dict_get(st->metadata, "title", NULL, 0); - write_metadata_header(pb, 2, "WM/Picture", attachment_value_size(&wctx->thumbnail, tag)); - - avio_put_str16le(pb, "image/jpeg"); - avio_w8(pb, 0x10); - avio_put_str16le(pb, tag ? tag->value : ""); - - avio_wl32(pb, wctx->thumbnail.size); - avio_write(pb, wctx->thumbnail.data, wctx->thumbnail.size); - - write_tag_int32(pb, "WM/MediaThumbType", 2); - } -} - -static void write_table_redirector_legacy_attrib(AVFormatContext *s) -{ - WtvContext *wctx = s->priv_data; - AVIOContext *pb = s->pb; - AVDictionaryEntry *tag = 0; - int64_t pos = 0; - - //FIXME: translate special tags to binary representation - while ((tag = av_dict_get(s->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) { - avio_wl64(pb, pos); - pos += metadata_header_size(tag->key) + strlen(tag->value)*2 + 2; - } - - if (wctx->thumbnail.size) { - AVStream *st = s->streams[wctx->thumbnail.stream_index]; - avio_wl64(pb, pos); - pos += metadata_header_size("WM/Picture") + attachment_value_size(&wctx->thumbnail, av_dict_get(st->metadata, "title", NULL, 0)); - - avio_wl64(pb, pos); - pos += metadata_header_size("WM/MediaThumbType") + 4; - } -} - -/** - * Pad the remainder of a file - * Write out fat table - * @return <0 on error - */ -static int finish_file(AVFormatContext *s, enum WtvFileIndex index, int64_t start_pos) -{ - WtvContext *wctx = s->priv_data; - AVIOContext *pb = s->pb; - WtvFile *w = &wctx->file[index]; - int64_t end_pos = avio_tell(pb); - int sector_bits, nb_sectors, pad; - - av_assert0(index < WTV_FILES); - - w->length = (end_pos - start_pos); - - // determine optimal fat table depth, sector_bits, nb_sectors - if (w->length <= WTV_SECTOR_SIZE) { - w->depth = 0; - sector_bits = WTV_SECTOR_BITS; - } else if (w->length <= (WTV_SECTOR_SIZE / 4) * WTV_SECTOR_SIZE) { - w->depth = 1; - sector_bits = WTV_SECTOR_BITS; - } else if (w->length <= (WTV_SECTOR_SIZE / 4) * WTV_BIGSECTOR_SIZE) { - w->depth = 1; - sector_bits = WTV_BIGSECTOR_BITS; - } else if (w->length <= (int64_t)(WTV_SECTOR_SIZE / 4) * (WTV_SECTOR_SIZE / 4) * WTV_SECTOR_SIZE) { - w->depth = 2; - sector_bits = WTV_SECTOR_BITS; - } else if (w->length <= (int64_t)(WTV_SECTOR_SIZE / 4) * (WTV_SECTOR_SIZE / 4) * WTV_BIGSECTOR_SIZE) { - w->depth = 2; - sector_bits = WTV_BIGSECTOR_BITS; - } else { - av_log(s, AV_LOG_ERROR, "unsupported file allocation table depth (%"PRIi64" bytes)\n", w->length); - return -1; - } - - // determine the nb_sectors - nb_sectors = (int)(w->length >> sector_bits); - - // pad sector of timeline - pad = (1 << sector_bits) - (w->length % (1 << sector_bits)); - if (pad) { - nb_sectors++; - write_pad(pb, pad); - } - - //write fat table - if (w->depth > 0) { - w->first_sector = write_fat_sector(s, start_pos, nb_sectors, sector_bits, w->depth) >> WTV_SECTOR_BITS; - } else { - w->first_sector = start_pos >> WTV_SECTOR_BITS; - } - - w->length |= 1ULL<<60; - if (sector_bits == WTV_SECTOR_BITS) - w->length |= 1ULL<<63; - - return 0; -} - -static int write_trailer(AVFormatContext *s) -{ - WtvContext *wctx = s->priv_data; - AVIOContext *pb = s->pb; - int root_size; - int64_t sector_pos; - int64_t start_pos, file_end_pos; - - if (finish_file(s, WTV_TIMELINE, wctx->timeline_start_pos) < 0) - return -1; - - start_pos = avio_tell(pb); - write_table_entries_events(s); - if (finish_file(s, WTV_TIMELINE_TABLE_0_ENTRIES_EVENTS, start_pos) < 0) - return -1; - - start_pos = avio_tell(pb); - write_table_entries_attrib(s); - if (finish_file(s, WTV_TABLE_0_ENTRIES_LEGACY_ATTRIB, start_pos) < 0) - return -1; - - start_pos = avio_tell(pb); - write_table_redirector_legacy_attrib(s); - if (finish_file(s, WTV_TABLE_0_REDIRECTOR_LEGACY_ATTRIB, start_pos) < 0) - return -1; - - start_pos = avio_tell(pb); - write_table_entries_time(s); - if (finish_file(s, WTV_TABLE_0_ENTRIES_TIME, start_pos) < 0) - return -1; - - // write root table - sector_pos = avio_tell(pb); - root_size = write_root_table(s, sector_pos); - - file_end_pos = avio_tell(pb); - // update root value - avio_seek(pb, 0x30, SEEK_SET); - avio_wl32(pb, root_size); - avio_seek(pb, 4, SEEK_CUR); - avio_wl32(pb, sector_pos >> WTV_SECTOR_BITS); - avio_seek(pb, 0x5c, SEEK_SET); - avio_wl32(pb, file_end_pos >> WTV_SECTOR_BITS); - - avio_flush(pb); - - av_free(wctx->sp_pairs); - av_free(wctx->st_pairs); - av_free_packet(&wctx->thumbnail); - return 0; -} - -AVOutputFormat ff_wtv_muxer = { - .name = "wtv", - .long_name = NULL_IF_CONFIG_SMALL("Windows Television (WTV)"), - .extensions = "wtv", - .priv_data_size = sizeof(WtvContext), - .audio_codec = AV_CODEC_ID_AC3, - .video_codec = AV_CODEC_ID_MPEG2VIDEO, - .write_header = write_header, - .write_packet = write_packet, - .write_trailer = write_trailer, - .codec_tag = (const AVCodecTag* const []){ ff_codec_bmp_tags, - ff_codec_wav_tags, 0 }, -}; |