| /* | |
| * Ogg muxer | |
| * Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at free dot fr> | |
| * | |
| * 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 "config_components.h" | |
| #include <stdint.h> | |
| #include "libavutil/crc.h" | |
| #include "libavutil/mathematics.h" | |
| #include "libavutil/opt.h" | |
| #include "libavutil/random_seed.h" | |
| #include "libavcodec/xiph.h" | |
| #include "libavcodec/bytestream.h" | |
| #include "libavcodec/flac.h" | |
| #include "avformat.h" | |
| #include "avio_internal.h" | |
| #include "internal.h" | |
| #include "mux.h" | |
| #include "version.h" | |
| #include "vorbiscomment.h" | |
| #define MAX_PAGE_SIZE 65025 | |
| typedef struct OGGPage { | |
| int64_t start_granule; | |
| int64_t granule; | |
| int stream_index; | |
| uint8_t flags; | |
| uint8_t segments_count; | |
| uint8_t segments[255]; | |
| uint8_t data[MAX_PAGE_SIZE]; | |
| uint16_t size; | |
| } OGGPage; | |
| typedef struct OGGStreamContext { | |
| unsigned page_counter; | |
| uint8_t *header[3]; | |
| int header_len[3]; | |
| /** for theora granule */ | |
| int kfgshift; | |
| int64_t last_kf_pts; | |
| int vrev; | |
| /* for VP8 granule */ | |
| int isvp8; | |
| int eos; | |
| unsigned page_count; ///< number of page buffered | |
| OGGPage page; ///< current page | |
| unsigned serial_num; ///< serial number | |
| int64_t last_granule; ///< last packet granule | |
| } OGGStreamContext; | |
| typedef struct OGGPageList { | |
| OGGPage page; | |
| struct OGGPageList *next; | |
| } OGGPageList; | |
| typedef struct OGGContext { | |
| const AVClass *class; | |
| OGGPageList *page_list; | |
| int pref_size; ///< preferred page size (0 => fill all segments) | |
| int64_t pref_duration; ///< preferred page duration (0 => fill all segments) | |
| int serial_offset; | |
| } OGGContext; | |
| #define OFFSET(x) offsetof(OGGContext, x) | |
| #define PARAM AV_OPT_FLAG_ENCODING_PARAM | |
| static const AVOption options[] = { | |
| { "serial_offset", "serial number offset", | |
| OFFSET(serial_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, PARAM }, | |
| { "oggpagesize", "Set preferred Ogg page size.", | |
| OFFSET(pref_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, MAX_PAGE_SIZE, PARAM}, | |
| { "pagesize", "preferred page size in bytes (deprecated)", | |
| OFFSET(pref_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, MAX_PAGE_SIZE, PARAM }, | |
| { "page_duration", "preferred page duration, in microseconds", | |
| OFFSET(pref_duration), AV_OPT_TYPE_INT64, { .i64 = 1000000 }, 0, INT64_MAX, PARAM }, | |
| { NULL }, | |
| }; | |
| static const AVClass ogg_muxer_class = { | |
| .class_name = "Ogg (audio/video/Speex/Opus) muxer", | |
| .item_name = av_default_item_name, | |
| .option = options, | |
| .version = LIBAVUTIL_VERSION_INT, | |
| }; | |
| static void ogg_write_page(AVFormatContext *s, OGGPage *page, int extra_flags) | |
| { | |
| OGGStreamContext *oggstream = s->streams[page->stream_index]->priv_data; | |
| uint8_t buf[4 + 1 + 1 + 8 + 4 + 4 + 4 + 1 + 255], *ptr = buf, *crc_pos; | |
| const AVCRC *crc_table = av_crc_get_table(AV_CRC_32_IEEE); | |
| uint32_t crc; | |
| bytestream_put_le32(&ptr, MKTAG('O', 'g', 'g', 'S')); | |
| bytestream_put_byte(&ptr, 0); | |
| bytestream_put_byte(&ptr, page->flags | extra_flags); | |
| bytestream_put_le64(&ptr, page->granule); | |
| bytestream_put_le32(&ptr, oggstream->serial_num); | |
| bytestream_put_le32(&ptr, oggstream->page_counter++); | |
| crc_pos = ptr; | |
| bytestream_put_le32(&ptr, 0); | |
| bytestream_put_byte(&ptr, page->segments_count); | |
| bytestream_put_buffer(&ptr, page->segments, page->segments_count); | |
| crc = av_crc(crc_table, 0, buf, ptr - buf); | |
| crc = av_crc(crc_table, crc, page->data, page->size); | |
| bytestream_put_be32(&crc_pos, crc); | |
| avio_write(s->pb, buf, ptr - buf); | |
| avio_write(s->pb, page->data, page->size); | |
| avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT); | |
| oggstream->page_count--; | |
| } | |
| static int ogg_key_granule(OGGStreamContext *oggstream, int64_t granule) | |
| { | |
| return (oggstream->kfgshift && !(granule & ((1<<oggstream->kfgshift)-1))) || | |
| (oggstream->isvp8 && !((granule >> 3) & 0x07ffffff)); | |
| } | |
| static int64_t ogg_granule_to_timestamp(OGGStreamContext *oggstream, int64_t granule) | |
| { | |
| if (oggstream->kfgshift) | |
| return (granule>>oggstream->kfgshift) + | |
| (granule & ((1<<oggstream->kfgshift)-1)); | |
| else if (oggstream->isvp8) | |
| return granule >> 32; | |
| else | |
| return granule; | |
| } | |
| static int ogg_compare_granule(AVFormatContext *s, OGGPage *next, OGGPage *page) | |
| { | |
| AVStream *st2 = s->streams[next->stream_index]; | |
| AVStream *st = s->streams[page->stream_index]; | |
| int64_t next_granule, cur_granule; | |
| if (next->granule == -1 || page->granule == -1) | |
| return 0; | |
| next_granule = av_rescale_q(ogg_granule_to_timestamp(st2->priv_data, next->granule), | |
| st2->time_base, AV_TIME_BASE_Q); | |
| cur_granule = av_rescale_q(ogg_granule_to_timestamp(st->priv_data, page->granule), | |
| st ->time_base, AV_TIME_BASE_Q); | |
| return next_granule > cur_granule; | |
| } | |
| static int ogg_reset_cur_page(OGGStreamContext *oggstream) | |
| { | |
| oggstream->page.granule = -1; | |
| oggstream->page.flags = 0; | |
| oggstream->page.segments_count = 0; | |
| oggstream->page.size = 0; | |
| return 0; | |
| } | |
| static int ogg_buffer_page(AVFormatContext *s, OGGStreamContext *oggstream) | |
| { | |
| OGGContext *ogg = s->priv_data; | |
| OGGPageList **p = &ogg->page_list; | |
| OGGPageList *l = av_mallocz(sizeof(*l)); | |
| if (!l) | |
| return AVERROR(ENOMEM); | |
| l->page = oggstream->page; | |
| oggstream->page.start_granule = ogg_granule_to_timestamp(oggstream, oggstream->page.granule); | |
| oggstream->page_count++; | |
| ogg_reset_cur_page(oggstream); | |
| while (*p) { | |
| if (ogg_compare_granule(s, &(*p)->page, &l->page)) | |
| break; | |
| p = &(*p)->next; | |
| } | |
| l->next = *p; | |
| *p = l; | |
| return 0; | |
| } | |
| static int ogg_buffer_data(AVFormatContext *s, AVStream *st, | |
| const uint8_t *data, unsigned size, int64_t granule, | |
| int header) | |
| { | |
| OGGStreamContext *oggstream = st->priv_data; | |
| OGGContext *ogg = s->priv_data; | |
| int total_segments = size / 255 + 1; | |
| const uint8_t *p = data; | |
| int i, segments, len, flush = 0; | |
| // Handles VFR by flushing page because this frame needs to have a timestamp | |
| // For theora and VP8, keyframes also need to have a timestamp to correctly mark | |
| // them as such, otherwise seeking will not work correctly at the very | |
| // least with old libogg versions. | |
| // Do not try to flush header packets though, that will create broken files. | |
| if ((st->codecpar->codec_id == AV_CODEC_ID_THEORA || st->codecpar->codec_id == AV_CODEC_ID_VP8) && !header && | |
| (ogg_granule_to_timestamp(oggstream, granule) > | |
| ogg_granule_to_timestamp(oggstream, oggstream->last_granule) + 1 || | |
| ogg_key_granule(oggstream, granule))) { | |
| if (oggstream->page.granule != -1) | |
| ogg_buffer_page(s, oggstream); | |
| flush = 1; | |
| } | |
| // avoid a continued page | |
| if (!header && oggstream->page.size > 0 && | |
| MAX_PAGE_SIZE - oggstream->page.size < size) { | |
| ogg_buffer_page(s, oggstream); | |
| } | |
| for (i = 0; i < total_segments; ) { | |
| OGGPage *page = &oggstream->page; | |
| segments = FFMIN(total_segments - i, 255 - page->segments_count); | |
| if (i && !page->segments_count) | |
| page->flags |= 1; // continued packet | |
| memset(page->segments+page->segments_count, 255, segments - 1); | |
| page->segments_count += segments - 1; | |
| len = FFMIN(size, segments*255); | |
| page->segments[page->segments_count++] = len - (segments-1)*255; | |
| memcpy(page->data+page->size, p, len); | |
| p += len; | |
| size -= len; | |
| i += segments; | |
| page->size += len; | |
| if (i == total_segments) | |
| page->granule = granule; | |
| { | |
| AVStream *st = s->streams[page->stream_index]; | |
| int64_t start = av_rescale_q(page->start_granule, st->time_base, | |
| AV_TIME_BASE_Q); | |
| int64_t next = av_rescale_q(ogg_granule_to_timestamp(oggstream, page->granule), | |
| st->time_base, AV_TIME_BASE_Q); | |
| if (page->segments_count == 255) { | |
| ogg_buffer_page(s, oggstream); | |
| } else if (!header) { | |
| if ((ogg->pref_size > 0 && page->size >= ogg->pref_size) || | |
| (ogg->pref_duration > 0 && next - start >= ogg->pref_duration)) { | |
| ogg_buffer_page(s, oggstream); | |
| } | |
| } | |
| } | |
| } | |
| if (flush && oggstream->page.granule != -1) | |
| ogg_buffer_page(s, oggstream); | |
| return 0; | |
| } | |
| static uint8_t *ogg_write_vorbiscomment(int64_t offset, int bitexact, | |
| int *header_len, AVDictionary **m, int framing_bit, | |
| AVChapter **chapters, unsigned int nb_chapters) | |
| { | |
| const char *vendor = bitexact ? "ffmpeg" : LIBAVFORMAT_IDENT; | |
| FFIOContext pb; | |
| int64_t size; | |
| uint8_t *p; | |
| ff_metadata_conv(m, ff_vorbiscomment_metadata_conv, NULL); | |
| size = offset + ff_vorbiscomment_length(*m, vendor, chapters, nb_chapters) + framing_bit; | |
| if (size > INT_MAX) | |
| return NULL; | |
| p = av_mallocz(size); | |
| if (!p) | |
| return NULL; | |
| ffio_init_write_context(&pb, p + offset, size - offset); | |
| ff_vorbiscomment_write(&pb.pub, *m, vendor, chapters, nb_chapters); | |
| if (framing_bit) | |
| avio_w8(&pb.pub, 1); | |
| *header_len = size; | |
| return p; | |
| } | |
| static int ogg_build_flac_headers(AVCodecParameters *par, | |
| OGGStreamContext *oggstream, int bitexact, | |
| AVDictionary **m) | |
| { | |
| uint8_t *p; | |
| if (par->extradata_size < FLAC_STREAMINFO_SIZE) | |
| return AVERROR(EINVAL); | |
| // first packet: STREAMINFO | |
| oggstream->header_len[0] = 51; | |
| oggstream->header[0] = av_mallocz(51); // per ogg flac specs | |
| p = oggstream->header[0]; | |
| if (!p) | |
| return AVERROR(ENOMEM); | |
| bytestream_put_byte(&p, 0x7F); | |
| bytestream_put_buffer(&p, "FLAC", 4); | |
| bytestream_put_byte(&p, 1); // major version | |
| bytestream_put_byte(&p, 0); // minor version | |
| bytestream_put_be16(&p, 1); // headers packets without this one | |
| bytestream_put_buffer(&p, "fLaC", 4); | |
| bytestream_put_byte(&p, 0x00); // streaminfo | |
| bytestream_put_be24(&p, 34); | |
| bytestream_put_buffer(&p, par->extradata, FLAC_STREAMINFO_SIZE); | |
| // second packet: VorbisComment | |
| p = ogg_write_vorbiscomment(4, bitexact, &oggstream->header_len[1], m, 0, NULL, 0); | |
| if (!p) | |
| return AVERROR(ENOMEM); | |
| oggstream->header[1] = p; | |
| bytestream_put_byte(&p, 0x84); // last metadata block and vorbis comment | |
| bytestream_put_be24(&p, oggstream->header_len[1] - 4); | |
| return 0; | |
| } | |
| #define SPEEX_HEADER_SIZE 80 | |
| static int ogg_build_speex_headers(AVCodecParameters *par, | |
| OGGStreamContext *oggstream, int bitexact, | |
| AVDictionary **m) | |
| { | |
| uint8_t *p; | |
| if (par->extradata_size < SPEEX_HEADER_SIZE) | |
| return AVERROR_INVALIDDATA; | |
| // first packet: Speex header | |
| p = av_mallocz(SPEEX_HEADER_SIZE); | |
| if (!p) | |
| return AVERROR(ENOMEM); | |
| oggstream->header[0] = p; | |
| oggstream->header_len[0] = SPEEX_HEADER_SIZE; | |
| bytestream_put_buffer(&p, par->extradata, SPEEX_HEADER_SIZE); | |
| AV_WL32(&oggstream->header[0][68], 0); // set extra_headers to 0 | |
| // second packet: VorbisComment | |
| p = ogg_write_vorbiscomment(0, bitexact, &oggstream->header_len[1], m, 0, NULL, 0); | |
| if (!p) | |
| return AVERROR(ENOMEM); | |
| oggstream->header[1] = p; | |
| return 0; | |
| } | |
| #define OPUS_HEADER_SIZE 19 | |
| static int ogg_build_opus_headers(AVCodecParameters *par, | |
| OGGStreamContext *oggstream, int bitexact, | |
| AVDictionary **m, AVChapter **chapters, | |
| unsigned int nb_chapters) | |
| { | |
| uint8_t *p; | |
| if (par->extradata_size < OPUS_HEADER_SIZE) | |
| return AVERROR_INVALIDDATA; | |
| /* first packet: Opus header */ | |
| p = av_mallocz(par->extradata_size); | |
| if (!p) | |
| return AVERROR(ENOMEM); | |
| oggstream->header[0] = p; | |
| oggstream->header_len[0] = par->extradata_size; | |
| bytestream_put_buffer(&p, par->extradata, par->extradata_size); | |
| /* second packet: VorbisComment */ | |
| p = ogg_write_vorbiscomment(8, bitexact, &oggstream->header_len[1], m, 0, chapters, nb_chapters); | |
| if (!p) | |
| return AVERROR(ENOMEM); | |
| oggstream->header[1] = p; | |
| bytestream_put_buffer(&p, "OpusTags", 8); | |
| return 0; | |
| } | |
| #define VP8_HEADER_SIZE 26 | |
| static int ogg_build_vp8_headers(AVFormatContext *s, AVStream *st, | |
| OGGStreamContext *oggstream, int bitexact) | |
| { | |
| AVCodecParameters *par = st->codecpar; | |
| uint8_t *p; | |
| /* first packet: VP8 header */ | |
| p = av_mallocz(VP8_HEADER_SIZE); | |
| if (!p) | |
| return AVERROR(ENOMEM); | |
| oggstream->header[0] = p; | |
| oggstream->header_len[0] = VP8_HEADER_SIZE; | |
| bytestream_put_byte(&p, 0x4f); // HDRID | |
| bytestream_put_buffer(&p, "VP80", 4); // Identifier | |
| bytestream_put_byte(&p, 1); // HDRTYP | |
| bytestream_put_byte(&p, 1); // VMAJ | |
| bytestream_put_byte(&p, 0); // VMIN | |
| bytestream_put_be16(&p, par->width); | |
| bytestream_put_be16(&p, par->height); | |
| bytestream_put_be24(&p, par->sample_aspect_ratio.num); | |
| bytestream_put_be24(&p, par->sample_aspect_ratio.den); | |
| if (st->r_frame_rate.num > 0 && st->r_frame_rate.den > 0) { | |
| // OggVP8 requires pts to increase by 1 per visible frame, so use the least common | |
| // multiple framerate if available. | |
| av_log(s, AV_LOG_DEBUG, "Changing time base from %d/%d to %d/%d\n", | |
| st->time_base.num, st->time_base.den, | |
| st->r_frame_rate.den, st->r_frame_rate.num); | |
| avpriv_set_pts_info(st, 64, st->r_frame_rate.den, st->r_frame_rate.num); | |
| } | |
| bytestream_put_be32(&p, st->time_base.den); | |
| bytestream_put_be32(&p, st->time_base.num); | |
| /* optional second packet: VorbisComment */ | |
| if (av_dict_get(st->metadata, "", NULL, AV_DICT_IGNORE_SUFFIX)) { | |
| p = ogg_write_vorbiscomment(7, bitexact, &oggstream->header_len[1], &st->metadata, 0, NULL, 0); | |
| if (!p) | |
| return AVERROR(ENOMEM); | |
| oggstream->header[1] = p; | |
| bytestream_put_byte(&p, 0x4f); // HDRID | |
| bytestream_put_buffer(&p, "VP80", 4); // Identifier | |
| bytestream_put_byte(&p, 2); // HDRTYP | |
| bytestream_put_byte(&p, 0x20); | |
| } | |
| oggstream->isvp8 = 1; | |
| return 0; | |
| } | |
| static void ogg_write_pages(AVFormatContext *s, int flush) | |
| { | |
| OGGContext *ogg = s->priv_data; | |
| OGGPageList *next, *p; | |
| if (!ogg->page_list) | |
| return; | |
| for (p = ogg->page_list; p; ) { | |
| OGGStreamContext *oggstream = | |
| s->streams[p->page.stream_index]->priv_data; | |
| if (oggstream->page_count < 2 && !flush) | |
| break; | |
| ogg_write_page(s, &p->page, | |
| flush == 1 && oggstream->page_count == 1 ? 4 : 0); // eos | |
| next = p->next; | |
| av_freep(&p); | |
| p = next; | |
| } | |
| ogg->page_list = p; | |
| } | |
| static int ogg_init(AVFormatContext *s) | |
| { | |
| OGGContext *ogg = s->priv_data; | |
| OGGStreamContext *oggstream = NULL; | |
| int i, j; | |
| if (ogg->pref_size) | |
| av_log(s, AV_LOG_WARNING, "The pagesize option is deprecated\n"); | |
| for (i = 0; i < s->nb_streams; i++) { | |
| AVStream *st = s->streams[i]; | |
| unsigned serial_num = i + ogg->serial_offset; | |
| if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) { | |
| if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) | |
| /* Opus requires a fixed 48kHz clock */ | |
| avpriv_set_pts_info(st, 64, 1, 48000); | |
| else | |
| avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate); | |
| } | |
| if (st->codecpar->codec_id != AV_CODEC_ID_VORBIS && | |
| st->codecpar->codec_id != AV_CODEC_ID_THEORA && | |
| st->codecpar->codec_id != AV_CODEC_ID_SPEEX && | |
| st->codecpar->codec_id != AV_CODEC_ID_FLAC && | |
| st->codecpar->codec_id != AV_CODEC_ID_OPUS && | |
| st->codecpar->codec_id != AV_CODEC_ID_VP8) { | |
| av_log(s, AV_LOG_ERROR, "Unsupported codec id in stream %d\n", i); | |
| return AVERROR(EINVAL); | |
| } | |
| if ((!st->codecpar->extradata || !st->codecpar->extradata_size) && | |
| st->codecpar->codec_id != AV_CODEC_ID_VP8) { | |
| av_log(s, AV_LOG_ERROR, "No extradata present\n"); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| oggstream = av_mallocz(sizeof(*oggstream)); | |
| if (!oggstream) | |
| return AVERROR(ENOMEM); | |
| oggstream->page.stream_index = i; | |
| if (!(s->flags & AVFMT_FLAG_BITEXACT)) | |
| do { | |
| serial_num = av_get_random_seed(); | |
| for (j = 0; j < i; j++) { | |
| OGGStreamContext *sc = s->streams[j]->priv_data; | |
| if (serial_num == sc->serial_num) | |
| break; | |
| } | |
| } while (j < i); | |
| oggstream->serial_num = serial_num; | |
| av_dict_copy(&st->metadata, s->metadata, AV_DICT_DONT_OVERWRITE); | |
| st->priv_data = oggstream; | |
| if (st->codecpar->codec_id == AV_CODEC_ID_FLAC) { | |
| int err = ogg_build_flac_headers(st->codecpar, oggstream, | |
| s->flags & AVFMT_FLAG_BITEXACT, | |
| &st->metadata); | |
| if (err) { | |
| av_log(s, AV_LOG_ERROR, "Error writing FLAC headers\n"); | |
| return err; | |
| } | |
| } else if (st->codecpar->codec_id == AV_CODEC_ID_SPEEX) { | |
| int err = ogg_build_speex_headers(st->codecpar, oggstream, | |
| s->flags & AVFMT_FLAG_BITEXACT, | |
| &st->metadata); | |
| if (err) { | |
| av_log(s, AV_LOG_ERROR, "Error writing Speex headers\n"); | |
| return err; | |
| } | |
| } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) { | |
| int err = ogg_build_opus_headers(st->codecpar, oggstream, | |
| s->flags & AVFMT_FLAG_BITEXACT, | |
| &st->metadata, s->chapters, s->nb_chapters); | |
| if (err) { | |
| av_log(s, AV_LOG_ERROR, "Error writing Opus headers\n"); | |
| return err; | |
| } | |
| } else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) { | |
| int err = ogg_build_vp8_headers(s, st, oggstream, | |
| s->flags & AVFMT_FLAG_BITEXACT); | |
| if (err) { | |
| av_log(s, AV_LOG_ERROR, "Error writing VP8 headers\n"); | |
| return err; | |
| } | |
| } else { | |
| uint8_t *p; | |
| const char *cstr = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? "vorbis" : "theora"; | |
| int header_type = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 3 : 0x81; | |
| int framing_bit = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 1 : 0; | |
| if (avpriv_split_xiph_headers(st->codecpar->extradata, st->codecpar->extradata_size, | |
| st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 30 : 42, | |
| (const uint8_t**)oggstream->header, oggstream->header_len) < 0) { | |
| av_log(s, AV_LOG_ERROR, "Extradata corrupted\n"); | |
| oggstream->header[1] = NULL; | |
| return AVERROR_INVALIDDATA; | |
| } | |
| p = ogg_write_vorbiscomment(7, s->flags & AVFMT_FLAG_BITEXACT, | |
| &oggstream->header_len[1], &st->metadata, | |
| framing_bit, NULL, 0); | |
| oggstream->header[1] = p; | |
| if (!p) | |
| return AVERROR(ENOMEM); | |
| bytestream_put_byte(&p, header_type); | |
| bytestream_put_buffer(&p, cstr, 6); | |
| if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) { | |
| int den = AV_RB32(oggstream->header[0] + 22), num = AV_RB32(oggstream->header[0] + 26); | |
| /* Make sure to use time base stored in the Theora stream header to write | |
| correct timestamps */ | |
| if (st->time_base.num != num || st->time_base.den != den) { | |
| av_log(s, AV_LOG_DEBUG, "Changing time base from %d/%d to %d/%d\n", | |
| st->time_base.num, st->time_base.den, num, den); | |
| avpriv_set_pts_info(st, 64, num, den); | |
| } | |
| /** KFGSHIFT is the width of the less significant section of the granule position | |
| The less significant section is the frame count since the last keyframe */ | |
| oggstream->kfgshift = ((oggstream->header[0][40]&3)<<3)|(oggstream->header[0][41]>>5); | |
| oggstream->vrev = oggstream->header[0][9]; | |
| av_log(s, AV_LOG_DEBUG, "theora kfgshift %d, vrev %d\n", | |
| oggstream->kfgshift, oggstream->vrev); | |
| } | |
| } | |
| } | |
| return 0; | |
| } | |
| static int ogg_write_header(AVFormatContext *s) | |
| { | |
| OGGStreamContext *oggstream = NULL; | |
| int i, j; | |
| for (j = 0; j < s->nb_streams; j++) { | |
| oggstream = s->streams[j]->priv_data; | |
| ogg_buffer_data(s, s->streams[j], oggstream->header[0], | |
| oggstream->header_len[0], 0, 1); | |
| oggstream->page.flags |= 2; // bos | |
| ogg_buffer_page(s, oggstream); | |
| } | |
| for (j = 0; j < s->nb_streams; j++) { | |
| AVStream *st = s->streams[j]; | |
| oggstream = st->priv_data; | |
| for (i = 1; i < 3; i++) { | |
| if (oggstream->header_len[i]) | |
| ogg_buffer_data(s, st, oggstream->header[i], | |
| oggstream->header_len[i], 0, 1); | |
| } | |
| ogg_buffer_page(s, oggstream); | |
| } | |
| oggstream->page.start_granule = AV_NOPTS_VALUE; | |
| ogg_write_pages(s, 2); | |
| return 0; | |
| } | |
| static int ogg_write_packet_internal(AVFormatContext *s, AVPacket *pkt) | |
| { | |
| AVStream *st = s->streams[pkt->stream_index]; | |
| OGGStreamContext *oggstream = st->priv_data; | |
| int ret; | |
| int64_t granule; | |
| if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) { | |
| int64_t pts = oggstream->vrev < 1 ? pkt->pts : pkt->pts + pkt->duration; | |
| int pframe_count; | |
| if (pkt->flags & AV_PKT_FLAG_KEY) | |
| oggstream->last_kf_pts = pts; | |
| pframe_count = pts - oggstream->last_kf_pts; | |
| // prevent frame count from overflow if key frame flag is not set | |
| if (pframe_count >= (1<<oggstream->kfgshift)) { | |
| oggstream->last_kf_pts += pframe_count; | |
| pframe_count = 0; | |
| } | |
| granule = (oggstream->last_kf_pts<<oggstream->kfgshift) | pframe_count; | |
| } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) | |
| granule = pkt->pts + pkt->duration + | |
| av_rescale_q(st->codecpar->initial_padding, | |
| (AVRational){ 1, st->codecpar->sample_rate }, | |
| st->time_base); | |
| else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) { | |
| int64_t pts, invcnt, dist; | |
| int visible; | |
| visible = (pkt->data[0] >> 4) & 1; | |
| pts = pkt->pts + pkt->duration; | |
| invcnt = (oggstream->last_granule >> 30) & 3; | |
| invcnt = visible ? 3 : (invcnt == 3 ? 0 : invcnt + 1); | |
| dist = (pkt->flags & AV_PKT_FLAG_KEY) ? 0 : ((oggstream->last_granule >> 3) & 0x07ffffff) + 1; | |
| granule = (pts << 32) | (invcnt << 30) | (dist << 3); | |
| } else | |
| granule = pkt->pts + pkt->duration; | |
| if (oggstream->page.start_granule == AV_NOPTS_VALUE) | |
| oggstream->page.start_granule = pkt->pts; | |
| ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule, 0); | |
| if (ret < 0) | |
| return ret; | |
| ogg_write_pages(s, 0); | |
| oggstream->last_granule = granule; | |
| return 0; | |
| } | |
| static int ogg_write_packet(AVFormatContext *s, AVPacket *pkt) | |
| { | |
| int i; | |
| if (pkt) | |
| return pkt->size ? ogg_write_packet_internal(s, pkt) : 0; | |
| for (i = 0; i < s->nb_streams; i++) { | |
| OGGStreamContext *oggstream = s->streams[i]->priv_data; | |
| if (oggstream->page.segments_count) | |
| ogg_buffer_page(s, oggstream); | |
| } | |
| ogg_write_pages(s, 2); | |
| return 1; | |
| } | |
| static int ogg_write_trailer(AVFormatContext *s) | |
| { | |
| int i; | |
| /* flush current page if needed */ | |
| for (i = 0; i < s->nb_streams; i++) { | |
| OGGStreamContext *oggstream = s->streams[i]->priv_data; | |
| if (oggstream->page.size > 0) | |
| ogg_buffer_page(s, oggstream); | |
| } | |
| ogg_write_pages(s, 1); | |
| return 0; | |
| } | |
| static void ogg_free(AVFormatContext *s) | |
| { | |
| OGGContext *ogg = s->priv_data; | |
| OGGPageList *p = ogg->page_list; | |
| int i; | |
| for (i = 0; i < s->nb_streams; i++) { | |
| AVStream *st = s->streams[i]; | |
| OGGStreamContext *oggstream = st->priv_data; | |
| if (!oggstream) | |
| continue; | |
| if (st->codecpar->codec_id == AV_CODEC_ID_FLAC || | |
| st->codecpar->codec_id == AV_CODEC_ID_SPEEX || | |
| st->codecpar->codec_id == AV_CODEC_ID_OPUS || | |
| st->codecpar->codec_id == AV_CODEC_ID_VP8) { | |
| av_freep(&oggstream->header[0]); | |
| } | |
| av_freep(&oggstream->header[1]); | |
| } | |
| while (p) { | |
| OGGPageList *next = p->next; | |
| av_free(p); | |
| p = next; | |
| } | |
| ogg->page_list = NULL; | |
| } | |
| #if CONFIG_OGG_MUXER | |
| const FFOutputFormat ff_ogg_muxer = { | |
| .p.name = "ogg", | |
| .p.long_name = NULL_IF_CONFIG_SMALL("Ogg"), | |
| .p.mime_type = "application/ogg", | |
| .p.extensions = "ogg" | |
| #if !CONFIG_OGV_MUXER | |
| ",ogv" | |
| #endif | |
| #if !CONFIG_SPX_MUXER | |
| ",spx" | |
| #endif | |
| #if !CONFIG_OPUS_MUXER | |
| ",opus" | |
| #endif | |
| , | |
| .priv_data_size = sizeof(OGGContext), | |
| .p.audio_codec = CONFIG_LIBVORBIS_ENCODER ? | |
| AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC, | |
| .p.video_codec = AV_CODEC_ID_THEORA, | |
| .init = ogg_init, | |
| .write_header = ogg_write_header, | |
| .write_packet = ogg_write_packet, | |
| .write_trailer = ogg_write_trailer, | |
| .deinit = ogg_free, | |
| #if FF_API_ALLOW_FLUSH | |
| .p.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH, | |
| #else | |
| .p.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT, | |
| #endif | |
| .p.priv_class = &ogg_muxer_class, | |
| .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH, | |
| }; | |
| #endif | |
| #if CONFIG_OGA_MUXER | |
| const FFOutputFormat ff_oga_muxer = { | |
| .p.name = "oga", | |
| .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Audio"), | |
| .p.mime_type = "audio/ogg", | |
| .p.extensions = "oga", | |
| .priv_data_size = sizeof(OGGContext), | |
| .p.audio_codec = AV_CODEC_ID_FLAC, | |
| .init = ogg_init, | |
| .write_header = ogg_write_header, | |
| .write_packet = ogg_write_packet, | |
| .write_trailer = ogg_write_trailer, | |
| .deinit = ogg_free, | |
| #if FF_API_ALLOW_FLUSH | |
| .p.flags = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH, | |
| #else | |
| .p.flags = AVFMT_TS_NEGATIVE, | |
| #endif | |
| .p.priv_class = &ogg_muxer_class, | |
| .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH, | |
| }; | |
| #endif | |
| #if CONFIG_OGV_MUXER | |
| const FFOutputFormat ff_ogv_muxer = { | |
| .p.name = "ogv", | |
| .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Video"), | |
| .p.mime_type = "video/ogg", | |
| .p.extensions = "ogv", | |
| .priv_data_size = sizeof(OGGContext), | |
| .p.audio_codec = CONFIG_LIBVORBIS_ENCODER ? | |
| AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC, | |
| .p.video_codec = CONFIG_LIBTHEORA_ENCODER ? | |
| AV_CODEC_ID_THEORA : AV_CODEC_ID_VP8, | |
| .init = ogg_init, | |
| .write_header = ogg_write_header, | |
| .write_packet = ogg_write_packet, | |
| .write_trailer = ogg_write_trailer, | |
| .deinit = ogg_free, | |
| #if FF_API_ALLOW_FLUSH | |
| .p.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT | AVFMT_ALLOW_FLUSH, | |
| #else | |
| .p.flags = AVFMT_TS_NEGATIVE | AVFMT_TS_NONSTRICT, | |
| #endif | |
| .p.priv_class = &ogg_muxer_class, | |
| .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH, | |
| }; | |
| #endif | |
| #if CONFIG_SPX_MUXER | |
| const FFOutputFormat ff_spx_muxer = { | |
| .p.name = "spx", | |
| .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Speex"), | |
| .p.mime_type = "audio/ogg", | |
| .p.extensions = "spx", | |
| .priv_data_size = sizeof(OGGContext), | |
| .p.audio_codec = AV_CODEC_ID_SPEEX, | |
| .init = ogg_init, | |
| .write_header = ogg_write_header, | |
| .write_packet = ogg_write_packet, | |
| .write_trailer = ogg_write_trailer, | |
| .deinit = ogg_free, | |
| #if FF_API_ALLOW_FLUSH | |
| .p.flags = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH, | |
| #else | |
| .p.flags = AVFMT_TS_NEGATIVE, | |
| #endif | |
| .p.priv_class = &ogg_muxer_class, | |
| .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH, | |
| }; | |
| #endif | |
| #if CONFIG_OPUS_MUXER | |
| const FFOutputFormat ff_opus_muxer = { | |
| .p.name = "opus", | |
| .p.long_name = NULL_IF_CONFIG_SMALL("Ogg Opus"), | |
| .p.mime_type = "audio/ogg", | |
| .p.extensions = "opus", | |
| .priv_data_size = sizeof(OGGContext), | |
| .p.audio_codec = AV_CODEC_ID_OPUS, | |
| .init = ogg_init, | |
| .write_header = ogg_write_header, | |
| .write_packet = ogg_write_packet, | |
| .write_trailer = ogg_write_trailer, | |
| .deinit = ogg_free, | |
| #if FF_API_ALLOW_FLUSH | |
| .p.flags = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH, | |
| #else | |
| .p.flags = AVFMT_TS_NEGATIVE, | |
| #endif | |
| .p.priv_class = &ogg_muxer_class, | |
| .flags_internal = FF_OFMT_FLAG_ALLOW_FLUSH, | |
| }; | |
| #endif |