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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6147 | serge | 1 | /* |
| 2 | * Ogg muxer |
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| 3 | * Copyright (c) 2007 Baptiste Coudurier |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | #include |
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| 23 | |||
| 24 | #include "libavutil/crc.h" |
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| 25 | #include "libavutil/mathematics.h" |
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| 26 | #include "libavutil/opt.h" |
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| 27 | #include "libavutil/random_seed.h" |
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| 28 | #include "libavcodec/xiph.h" |
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| 29 | #include "libavcodec/bytestream.h" |
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| 30 | #include "libavcodec/flac.h" |
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| 31 | #include "avformat.h" |
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| 32 | #include "avio_internal.h" |
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| 33 | #include "internal.h" |
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| 34 | #include "vorbiscomment.h" |
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| 35 | |||
| 36 | #define MAX_PAGE_SIZE 65025 |
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| 37 | |||
| 38 | typedef struct OGGPage { |
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| 39 | int64_t start_granule; |
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| 40 | int64_t granule; |
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| 41 | int stream_index; |
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| 42 | uint8_t flags; |
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| 43 | uint8_t segments_count; |
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| 44 | uint8_t segments[255]; |
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| 45 | uint8_t data[MAX_PAGE_SIZE]; |
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| 46 | uint16_t size; |
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| 47 | } OGGPage; |
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| 48 | |||
| 49 | typedef struct OGGStreamContext { |
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| 50 | unsigned page_counter; |
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| 51 | uint8_t *header[3]; |
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| 52 | int header_len[3]; |
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| 53 | /** for theora granule */ |
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| 54 | int kfgshift; |
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| 55 | int64_t last_kf_pts; |
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| 56 | int vrev; |
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| 57 | int eos; |
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| 58 | unsigned page_count; ///< number of page buffered |
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| 59 | OGGPage page; ///< current page |
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| 60 | unsigned serial_num; ///< serial number |
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| 61 | int64_t last_granule; ///< last packet granule |
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| 62 | } OGGStreamContext; |
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| 63 | |||
| 64 | typedef struct OGGPageList { |
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| 65 | OGGPage page; |
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| 66 | struct OGGPageList *next; |
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| 67 | } OGGPageList; |
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| 68 | |||
| 69 | typedef struct OGGContext { |
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| 70 | const AVClass *class; |
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| 71 | OGGPageList *page_list; |
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| 72 | int pref_size; ///< preferred page size (0 => fill all segments) |
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| 73 | int64_t pref_duration; ///< preferred page duration (0 => fill all segments) |
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| 74 | int serial_offset; |
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| 75 | } OGGContext; |
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| 76 | |||
| 77 | #define OFFSET(x) offsetof(OGGContext, x) |
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| 78 | #define PARAM AV_OPT_FLAG_ENCODING_PARAM |
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| 79 | |||
| 80 | static const AVOption options[] = { |
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| 81 | { "serial_offset", "serial number offset", |
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| 82 | OFFSET(serial_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, PARAM }, |
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| 83 | { "oggpagesize", "Set preferred Ogg page size.", |
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| 84 | OFFSET(pref_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, MAX_PAGE_SIZE, PARAM}, |
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| 85 | { "pagesize", "preferred page size in bytes (deprecated)", |
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| 86 | OFFSET(pref_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, MAX_PAGE_SIZE, PARAM }, |
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| 87 | { "page_duration", "preferred page duration, in microseconds", |
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| 88 | OFFSET(pref_duration), AV_OPT_TYPE_INT64, { .i64 = 1000000 }, 0, INT64_MAX, PARAM }, |
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| 89 | { NULL }, |
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| 90 | }; |
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| 91 | |||
| 92 | #define OGG_CLASS(flavor, name)\ |
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| 93 | static const AVClass flavor ## _muxer_class = {\ |
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| 94 | .class_name = #name " muxer",\ |
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| 95 | .item_name = av_default_item_name,\ |
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| 96 | .option = options,\ |
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| 97 | .version = LIBAVUTIL_VERSION_INT,\ |
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| 98 | }; |
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| 99 | |||
| 100 | static void ogg_update_checksum(AVFormatContext *s, AVIOContext *pb, int64_t crc_offset) |
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| 101 | { |
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| 102 | int64_t pos = avio_tell(pb); |
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| 103 | uint32_t checksum = ffio_get_checksum(pb); |
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| 104 | avio_seek(pb, crc_offset, SEEK_SET); |
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| 105 | avio_wb32(pb, checksum); |
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| 106 | avio_seek(pb, pos, SEEK_SET); |
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| 107 | } |
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| 108 | |||
| 109 | static int ogg_write_page(AVFormatContext *s, OGGPage *page, int extra_flags) |
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| 110 | { |
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| 111 | OGGStreamContext *oggstream = s->streams[page->stream_index]->priv_data; |
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| 112 | AVIOContext *pb; |
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| 113 | int64_t crc_offset; |
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| 114 | int ret, size; |
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| 115 | uint8_t *buf; |
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| 116 | |||
| 117 | ret = avio_open_dyn_buf(&pb); |
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| 118 | if (ret < 0) |
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| 119 | return ret; |
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| 120 | ffio_init_checksum(pb, ff_crc04C11DB7_update, 0); |
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| 121 | ffio_wfourcc(pb, "OggS"); |
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| 122 | avio_w8(pb, 0); |
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| 123 | avio_w8(pb, page->flags | extra_flags); |
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| 124 | avio_wl64(pb, page->granule); |
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| 125 | avio_wl32(pb, oggstream->serial_num); |
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| 126 | avio_wl32(pb, oggstream->page_counter++); |
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| 127 | crc_offset = avio_tell(pb); |
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| 128 | avio_wl32(pb, 0); // crc |
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| 129 | avio_w8(pb, page->segments_count); |
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| 130 | avio_write(pb, page->segments, page->segments_count); |
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| 131 | avio_write(pb, page->data, page->size); |
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| 132 | |||
| 133 | ogg_update_checksum(s, pb, crc_offset); |
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| 134 | avio_flush(pb); |
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| 135 | |||
| 136 | size = avio_close_dyn_buf(pb, &buf); |
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| 137 | if (size < 0) |
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| 138 | return size; |
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| 139 | |||
| 140 | avio_write(s->pb, buf, size); |
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| 141 | avio_flush(s->pb); |
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| 142 | av_free(buf); |
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| 143 | oggstream->page_count--; |
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| 144 | return 0; |
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| 145 | } |
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| 146 | |||
| 147 | static int ogg_key_granule(OGGStreamContext *oggstream, int64_t granule) |
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| 148 | { |
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| 149 | return oggstream->kfgshift && !(granule & ((1< |
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| 150 | } |
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| 151 | |||
| 152 | static int64_t ogg_granule_to_timestamp(OGGStreamContext *oggstream, int64_t granule) |
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| 153 | { |
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| 154 | if (oggstream->kfgshift) |
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| 155 | return (granule>>oggstream->kfgshift) + |
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| 156 | (granule & ((1< |
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| 157 | else |
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| 158 | return granule; |
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| 159 | } |
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| 160 | |||
| 161 | static int ogg_compare_granule(AVFormatContext *s, OGGPage *next, OGGPage *page) |
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| 162 | { |
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| 163 | AVStream *st2 = s->streams[next->stream_index]; |
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| 164 | AVStream *st = s->streams[page->stream_index]; |
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| 165 | int64_t next_granule, cur_granule; |
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| 166 | |||
| 167 | if (next->granule == -1 || page->granule == -1) |
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| 168 | return 0; |
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| 169 | |||
| 170 | next_granule = av_rescale_q(ogg_granule_to_timestamp(st2->priv_data, next->granule), |
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| 171 | st2->time_base, AV_TIME_BASE_Q); |
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| 172 | cur_granule = av_rescale_q(ogg_granule_to_timestamp(st->priv_data, page->granule), |
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| 173 | st ->time_base, AV_TIME_BASE_Q); |
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| 174 | return next_granule > cur_granule; |
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| 175 | } |
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| 176 | |||
| 177 | static int ogg_reset_cur_page(OGGStreamContext *oggstream) |
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| 178 | { |
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| 179 | oggstream->page.granule = -1; |
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| 180 | oggstream->page.flags = 0; |
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| 181 | oggstream->page.segments_count = 0; |
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| 182 | oggstream->page.size = 0; |
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| 183 | return 0; |
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| 184 | } |
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| 185 | |||
| 186 | static int ogg_buffer_page(AVFormatContext *s, OGGStreamContext *oggstream) |
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| 187 | { |
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| 188 | OGGContext *ogg = s->priv_data; |
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| 189 | OGGPageList **p = &ogg->page_list; |
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| 190 | OGGPageList *l = av_mallocz(sizeof(*l)); |
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| 191 | |||
| 192 | if (!l) |
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| 193 | return AVERROR(ENOMEM); |
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| 194 | l->page = oggstream->page; |
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| 195 | |||
| 196 | oggstream->page.start_granule = oggstream->page.granule; |
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| 197 | oggstream->page_count++; |
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| 198 | ogg_reset_cur_page(oggstream); |
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| 199 | |||
| 200 | while (*p) { |
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| 201 | if (ogg_compare_granule(s, &(*p)->page, &l->page)) |
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| 202 | break; |
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| 203 | p = &(*p)->next; |
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| 204 | } |
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| 205 | l->next = *p; |
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| 206 | *p = l; |
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| 207 | |||
| 208 | return 0; |
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| 209 | } |
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| 210 | |||
| 211 | static int ogg_buffer_data(AVFormatContext *s, AVStream *st, |
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| 212 | uint8_t *data, unsigned size, int64_t granule, |
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| 213 | int header) |
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| 214 | { |
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| 215 | OGGStreamContext *oggstream = st->priv_data; |
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| 216 | OGGContext *ogg = s->priv_data; |
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| 217 | int total_segments = size / 255 + 1; |
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| 218 | uint8_t *p = data; |
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| 219 | int i, segments, len, flush = 0; |
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| 220 | |||
| 221 | // Handles VFR by flushing page because this frame needs to have a timestamp |
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| 222 | // For theora, keyframes also need to have a timestamp to correctly mark |
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| 223 | // them as such, otherwise seeking will not work correctly at the very |
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| 224 | // least with old libogg versions. |
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| 225 | // Do not try to flush header packets though, that will create broken files. |
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| 226 | if (st->codec->codec_id == AV_CODEC_ID_THEORA && !header && |
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| 227 | (ogg_granule_to_timestamp(oggstream, granule) > |
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| 228 | ogg_granule_to_timestamp(oggstream, oggstream->last_granule) + 1 || |
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| 229 | ogg_key_granule(oggstream, granule))) { |
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| 230 | if (oggstream->page.granule != -1) |
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| 231 | ogg_buffer_page(s, oggstream); |
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| 232 | flush = 1; |
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| 233 | } |
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| 234 | |||
| 235 | // avoid a continued page |
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| 236 | if (!header && oggstream->page.size > 0 && |
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| 237 | MAX_PAGE_SIZE - oggstream->page.size < size) { |
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| 238 | ogg_buffer_page(s, oggstream); |
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| 239 | } |
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| 240 | |||
| 241 | for (i = 0; i < total_segments; ) { |
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| 242 | OGGPage *page = &oggstream->page; |
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| 243 | |||
| 244 | segments = FFMIN(total_segments - i, 255 - page->segments_count); |
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| 245 | |||
| 246 | if (i && !page->segments_count) |
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| 247 | page->flags |= 1; // continued packet |
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| 248 | |||
| 249 | memset(page->segments+page->segments_count, 255, segments - 1); |
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| 250 | page->segments_count += segments - 1; |
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| 251 | |||
| 252 | len = FFMIN(size, segments*255); |
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| 253 | page->segments[page->segments_count++] = len - (segments-1)*255; |
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| 254 | memcpy(page->data+page->size, p, len); |
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| 255 | p += len; |
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| 256 | size -= len; |
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| 257 | i += segments; |
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| 258 | page->size += len; |
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| 259 | |||
| 260 | if (i == total_segments) |
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| 261 | page->granule = granule; |
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| 262 | |||
| 263 | { |
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| 264 | AVStream *st = s->streams[page->stream_index]; |
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| 265 | |||
| 266 | int64_t start = av_rescale_q(page->start_granule, st->time_base, |
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| 267 | AV_TIME_BASE_Q); |
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| 268 | int64_t next = av_rescale_q(page->granule, st->time_base, |
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| 269 | AV_TIME_BASE_Q); |
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| 270 | |||
| 271 | if (page->segments_count == 255) { |
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| 272 | ogg_buffer_page(s, oggstream); |
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| 273 | } else if (!header) { |
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| 274 | if ((ogg->pref_size > 0 && page->size >= ogg->pref_size) || |
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| 275 | (ogg->pref_duration > 0 && next - start >= ogg->pref_duration)) { |
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| 276 | ogg_buffer_page(s, oggstream); |
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| 277 | } |
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| 278 | } |
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| 279 | } |
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| 280 | } |
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| 281 | |||
| 282 | if (flush && oggstream->page.granule != -1) |
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| 283 | ogg_buffer_page(s, oggstream); |
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| 284 | |||
| 285 | return 0; |
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| 286 | } |
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| 287 | |||
| 288 | static uint8_t *ogg_write_vorbiscomment(int64_t offset, int bitexact, |
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| 289 | int *header_len, AVDictionary **m, int framing_bit) |
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| 290 | { |
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| 291 | const char *vendor = bitexact ? "ffmpeg" : LIBAVFORMAT_IDENT; |
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| 292 | int64_t size; |
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| 293 | uint8_t *p, *p0; |
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| 294 | |||
| 295 | ff_metadata_conv(m, ff_vorbiscomment_metadata_conv, NULL); |
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| 296 | |||
| 297 | size = offset + ff_vorbiscomment_length(*m, vendor) + framing_bit; |
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| 298 | if (size > INT_MAX) |
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| 299 | return NULL; |
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| 300 | p = av_mallocz(size); |
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| 301 | if (!p) |
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| 302 | return NULL; |
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| 303 | p0 = p; |
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| 304 | |||
| 305 | p += offset; |
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| 306 | ff_vorbiscomment_write(&p, m, vendor); |
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| 307 | if (framing_bit) |
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| 308 | bytestream_put_byte(&p, 1); |
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| 309 | |||
| 310 | *header_len = size; |
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| 311 | return p0; |
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| 312 | } |
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| 313 | |||
| 314 | static int ogg_build_flac_headers(AVCodecContext *avctx, |
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| 315 | OGGStreamContext *oggstream, int bitexact, |
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| 316 | AVDictionary **m) |
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| 317 | { |
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| 318 | uint8_t *p; |
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| 319 | |||
| 320 | if (avctx->extradata_size < FLAC_STREAMINFO_SIZE) |
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| 321 | return AVERROR(EINVAL); |
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| 322 | |||
| 323 | // first packet: STREAMINFO |
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| 324 | oggstream->header_len[0] = 51; |
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| 325 | oggstream->header[0] = av_mallocz(51); // per ogg flac specs |
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| 326 | p = oggstream->header[0]; |
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| 327 | if (!p) |
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| 328 | return AVERROR(ENOMEM); |
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| 329 | bytestream_put_byte(&p, 0x7F); |
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| 330 | bytestream_put_buffer(&p, "FLAC", 4); |
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| 331 | bytestream_put_byte(&p, 1); // major version |
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| 332 | bytestream_put_byte(&p, 0); // minor version |
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| 333 | bytestream_put_be16(&p, 1); // headers packets without this one |
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| 334 | bytestream_put_buffer(&p, "fLaC", 4); |
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| 335 | bytestream_put_byte(&p, 0x00); // streaminfo |
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| 336 | bytestream_put_be24(&p, 34); |
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| 337 | bytestream_put_buffer(&p, avctx->extradata, FLAC_STREAMINFO_SIZE); |
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| 338 | |||
| 339 | // second packet: VorbisComment |
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| 340 | p = ogg_write_vorbiscomment(4, bitexact, &oggstream->header_len[1], m, 0); |
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| 341 | if (!p) |
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| 342 | return AVERROR(ENOMEM); |
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| 343 | oggstream->header[1] = p; |
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| 344 | bytestream_put_byte(&p, 0x84); // last metadata block and vorbis comment |
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| 345 | bytestream_put_be24(&p, oggstream->header_len[1] - 4); |
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| 346 | |||
| 347 | return 0; |
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| 348 | } |
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| 349 | |||
| 350 | #define SPEEX_HEADER_SIZE 80 |
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| 351 | |||
| 352 | static int ogg_build_speex_headers(AVCodecContext *avctx, |
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| 353 | OGGStreamContext *oggstream, int bitexact, |
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| 354 | AVDictionary **m) |
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| 355 | { |
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| 356 | uint8_t *p; |
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| 357 | |||
| 358 | if (avctx->extradata_size < SPEEX_HEADER_SIZE) |
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| 359 | return AVERROR_INVALIDDATA; |
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| 360 | |||
| 361 | // first packet: Speex header |
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| 362 | p = av_mallocz(SPEEX_HEADER_SIZE); |
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| 363 | if (!p) |
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| 364 | return AVERROR(ENOMEM); |
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| 365 | oggstream->header[0] = p; |
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| 366 | oggstream->header_len[0] = SPEEX_HEADER_SIZE; |
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| 367 | bytestream_put_buffer(&p, avctx->extradata, SPEEX_HEADER_SIZE); |
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| 368 | AV_WL32(&oggstream->header[0][68], 0); // set extra_headers to 0 |
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| 369 | |||
| 370 | // second packet: VorbisComment |
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| 371 | p = ogg_write_vorbiscomment(0, bitexact, &oggstream->header_len[1], m, 0); |
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| 372 | if (!p) |
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| 373 | return AVERROR(ENOMEM); |
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| 374 | oggstream->header[1] = p; |
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| 375 | |||
| 376 | return 0; |
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| 377 | } |
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| 378 | |||
| 379 | #define OPUS_HEADER_SIZE 19 |
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| 380 | |||
| 381 | static int ogg_build_opus_headers(AVCodecContext *avctx, |
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| 382 | OGGStreamContext *oggstream, int bitexact, |
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| 383 | AVDictionary **m) |
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| 384 | { |
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| 385 | uint8_t *p; |
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| 386 | |||
| 387 | if (avctx->extradata_size < OPUS_HEADER_SIZE) |
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| 388 | return AVERROR_INVALIDDATA; |
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| 389 | |||
| 390 | /* first packet: Opus header */ |
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| 391 | p = av_mallocz(avctx->extradata_size); |
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| 392 | if (!p) |
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| 393 | return AVERROR(ENOMEM); |
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| 394 | oggstream->header[0] = p; |
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| 395 | oggstream->header_len[0] = avctx->extradata_size; |
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| 396 | bytestream_put_buffer(&p, avctx->extradata, avctx->extradata_size); |
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| 397 | |||
| 398 | /* second packet: VorbisComment */ |
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| 399 | p = ogg_write_vorbiscomment(8, bitexact, &oggstream->header_len[1], m, 0); |
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| 400 | if (!p) |
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| 401 | return AVERROR(ENOMEM); |
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| 402 | oggstream->header[1] = p; |
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| 403 | bytestream_put_buffer(&p, "OpusTags", 8); |
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| 404 | |||
| 405 | return 0; |
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| 406 | } |
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| 407 | |||
| 408 | static void ogg_write_pages(AVFormatContext *s, int flush) |
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| 409 | { |
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| 410 | OGGContext *ogg = s->priv_data; |
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| 411 | OGGPageList *next, *p; |
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| 412 | |||
| 413 | if (!ogg->page_list) |
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| 414 | return; |
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| 415 | |||
| 416 | for (p = ogg->page_list; p; ) { |
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| 417 | OGGStreamContext *oggstream = |
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| 418 | s->streams[p->page.stream_index]->priv_data; |
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| 419 | if (oggstream->page_count < 2 && !flush) |
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| 420 | break; |
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| 421 | ogg_write_page(s, &p->page, |
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| 422 | flush == 1 && oggstream->page_count == 1 ? 4 : 0); // eos |
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| 423 | next = p->next; |
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| 424 | av_freep(&p); |
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| 425 | p = next; |
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| 426 | } |
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| 427 | ogg->page_list = p; |
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| 428 | } |
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| 429 | |||
| 430 | static int ogg_write_header(AVFormatContext *s) |
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| 431 | { |
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| 432 | OGGContext *ogg = s->priv_data; |
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| 433 | OGGStreamContext *oggstream = NULL; |
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| 434 | int i, j; |
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| 435 | |||
| 436 | if (ogg->pref_size) |
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| 437 | av_log(s, AV_LOG_WARNING, "The pagesize option is deprecated\n"); |
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| 438 | |||
| 439 | for (i = 0; i < s->nb_streams; i++) { |
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| 440 | AVStream *st = s->streams[i]; |
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| 441 | unsigned serial_num = i + ogg->serial_offset; |
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| 442 | |||
| 443 | if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) { |
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| 444 | if (st->codec->codec_id == AV_CODEC_ID_OPUS) |
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| 445 | /* Opus requires a fixed 48kHz clock */ |
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| 446 | avpriv_set_pts_info(st, 64, 1, 48000); |
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| 447 | else |
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| 448 | avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate); |
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| 449 | } |
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| 450 | |||
| 451 | if (st->codec->codec_id != AV_CODEC_ID_VORBIS && |
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| 452 | st->codec->codec_id != AV_CODEC_ID_THEORA && |
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| 453 | st->codec->codec_id != AV_CODEC_ID_SPEEX && |
||
| 454 | st->codec->codec_id != AV_CODEC_ID_FLAC && |
||
| 455 | st->codec->codec_id != AV_CODEC_ID_OPUS) { |
||
| 456 | av_log(s, AV_LOG_ERROR, "Unsupported codec id in stream %d\n", i); |
||
| 457 | return AVERROR(EINVAL); |
||
| 458 | } |
||
| 459 | |||
| 460 | if (!st->codec->extradata || !st->codec->extradata_size) { |
||
| 461 | av_log(s, AV_LOG_ERROR, "No extradata present\n"); |
||
| 462 | return AVERROR_INVALIDDATA; |
||
| 463 | } |
||
| 464 | oggstream = av_mallocz(sizeof(*oggstream)); |
||
| 465 | if (!oggstream) |
||
| 466 | return AVERROR(ENOMEM); |
||
| 467 | |||
| 468 | oggstream->page.stream_index = i; |
||
| 469 | |||
| 470 | if (!(s->flags & AVFMT_FLAG_BITEXACT)) |
||
| 471 | do { |
||
| 472 | serial_num = av_get_random_seed(); |
||
| 473 | for (j = 0; j < i; j++) { |
||
| 474 | OGGStreamContext *sc = s->streams[j]->priv_data; |
||
| 475 | if (serial_num == sc->serial_num) |
||
| 476 | break; |
||
| 477 | } |
||
| 478 | } while (j < i); |
||
| 479 | oggstream->serial_num = serial_num; |
||
| 480 | |||
| 481 | av_dict_copy(&st->metadata, s->metadata, AV_DICT_DONT_OVERWRITE); |
||
| 482 | |||
| 483 | st->priv_data = oggstream; |
||
| 484 | if (st->codec->codec_id == AV_CODEC_ID_FLAC) { |
||
| 485 | int err = ogg_build_flac_headers(st->codec, oggstream, |
||
| 486 | s->flags & AVFMT_FLAG_BITEXACT, |
||
| 487 | &st->metadata); |
||
| 488 | if (err) { |
||
| 489 | av_log(s, AV_LOG_ERROR, "Error writing FLAC headers\n"); |
||
| 490 | av_freep(&st->priv_data); |
||
| 491 | return err; |
||
| 492 | } |
||
| 493 | } else if (st->codec->codec_id == AV_CODEC_ID_SPEEX) { |
||
| 494 | int err = ogg_build_speex_headers(st->codec, oggstream, |
||
| 495 | s->flags & AVFMT_FLAG_BITEXACT, |
||
| 496 | &st->metadata); |
||
| 497 | if (err) { |
||
| 498 | av_log(s, AV_LOG_ERROR, "Error writing Speex headers\n"); |
||
| 499 | av_freep(&st->priv_data); |
||
| 500 | return err; |
||
| 501 | } |
||
| 502 | } else if (st->codec->codec_id == AV_CODEC_ID_OPUS) { |
||
| 503 | int err = ogg_build_opus_headers(st->codec, oggstream, |
||
| 504 | s->flags & AVFMT_FLAG_BITEXACT, |
||
| 505 | &st->metadata); |
||
| 506 | if (err) { |
||
| 507 | av_log(s, AV_LOG_ERROR, "Error writing Opus headers\n"); |
||
| 508 | av_freep(&st->priv_data); |
||
| 509 | return err; |
||
| 510 | } |
||
| 511 | } else { |
||
| 512 | uint8_t *p; |
||
| 513 | const char *cstr = st->codec->codec_id == AV_CODEC_ID_VORBIS ? "vorbis" : "theora"; |
||
| 514 | int header_type = st->codec->codec_id == AV_CODEC_ID_VORBIS ? 3 : 0x81; |
||
| 515 | int framing_bit = st->codec->codec_id == AV_CODEC_ID_VORBIS ? 1 : 0; |
||
| 516 | |||
| 517 | if (avpriv_split_xiph_headers(st->codec->extradata, st->codec->extradata_size, |
||
| 518 | st->codec->codec_id == AV_CODEC_ID_VORBIS ? 30 : 42, |
||
| 519 | (const uint8_t**)oggstream->header, oggstream->header_len) < 0) { |
||
| 520 | av_log(s, AV_LOG_ERROR, "Extradata corrupted\n"); |
||
| 521 | av_freep(&st->priv_data); |
||
| 522 | return AVERROR_INVALIDDATA; |
||
| 523 | } |
||
| 524 | |||
| 525 | p = ogg_write_vorbiscomment(7, s->flags & AVFMT_FLAG_BITEXACT, |
||
| 526 | &oggstream->header_len[1], &st->metadata, |
||
| 527 | framing_bit); |
||
| 528 | oggstream->header[1] = p; |
||
| 529 | if (!p) |
||
| 530 | return AVERROR(ENOMEM); |
||
| 531 | |||
| 532 | bytestream_put_byte(&p, header_type); |
||
| 533 | bytestream_put_buffer(&p, cstr, 6); |
||
| 534 | |||
| 535 | if (st->codec->codec_id == AV_CODEC_ID_THEORA) { |
||
| 536 | /** KFGSHIFT is the width of the less significant section of the granule position |
||
| 537 | The less significant section is the frame count since the last keyframe */ |
||
| 538 | oggstream->kfgshift = ((oggstream->header[0][40]&3)<<3)|(oggstream->header[0][41]>>5); |
||
| 539 | oggstream->vrev = oggstream->header[0][9]; |
||
| 540 | av_log(s, AV_LOG_DEBUG, "theora kfgshift %d, vrev %d\n", |
||
| 541 | oggstream->kfgshift, oggstream->vrev); |
||
| 542 | } |
||
| 543 | } |
||
| 544 | } |
||
| 545 | |||
| 546 | for (j = 0; j < s->nb_streams; j++) { |
||
| 547 | OGGStreamContext *oggstream = s->streams[j]->priv_data; |
||
| 548 | ogg_buffer_data(s, s->streams[j], oggstream->header[0], |
||
| 549 | oggstream->header_len[0], 0, 1); |
||
| 550 | oggstream->page.flags |= 2; // bos |
||
| 551 | ogg_buffer_page(s, oggstream); |
||
| 552 | } |
||
| 553 | for (j = 0; j < s->nb_streams; j++) { |
||
| 554 | AVStream *st = s->streams[j]; |
||
| 555 | OGGStreamContext *oggstream = st->priv_data; |
||
| 556 | for (i = 1; i < 3; i++) { |
||
| 557 | if (oggstream->header_len[i]) |
||
| 558 | ogg_buffer_data(s, st, oggstream->header[i], |
||
| 559 | oggstream->header_len[i], 0, 1); |
||
| 560 | } |
||
| 561 | ogg_buffer_page(s, oggstream); |
||
| 562 | } |
||
| 563 | |||
| 564 | oggstream->page.start_granule = AV_NOPTS_VALUE; |
||
| 565 | |||
| 566 | ogg_write_pages(s, 2); |
||
| 567 | |||
| 568 | return 0; |
||
| 569 | } |
||
| 570 | |||
| 571 | static int ogg_write_packet_internal(AVFormatContext *s, AVPacket *pkt) |
||
| 572 | { |
||
| 573 | AVStream *st = s->streams[pkt->stream_index]; |
||
| 574 | OGGStreamContext *oggstream = st->priv_data; |
||
| 575 | int ret; |
||
| 576 | int64_t granule; |
||
| 577 | |||
| 578 | if (st->codec->codec_id == AV_CODEC_ID_THEORA) { |
||
| 579 | int64_t pts = oggstream->vrev < 1 ? pkt->pts : pkt->pts + pkt->duration; |
||
| 580 | int pframe_count; |
||
| 581 | if (pkt->flags & AV_PKT_FLAG_KEY) |
||
| 582 | oggstream->last_kf_pts = pts; |
||
| 583 | pframe_count = pts - oggstream->last_kf_pts; |
||
| 584 | // prevent frame count from overflow if key frame flag is not set |
||
| 585 | if (pframe_count >= (1< |
||
| 586 | oggstream->last_kf_pts += pframe_count; |
||
| 587 | pframe_count = 0; |
||
| 588 | } |
||
| 589 | granule = (oggstream->last_kf_pts< |
||
| 590 | } else if (st->codec->codec_id == AV_CODEC_ID_OPUS) |
||
| 591 | granule = pkt->pts + pkt->duration + |
||
| 592 | av_rescale_q(st->codec->initial_padding, |
||
| 593 | (AVRational){ 1, st->codec->sample_rate }, |
||
| 594 | st->time_base); |
||
| 595 | else |
||
| 596 | granule = pkt->pts + pkt->duration; |
||
| 597 | |||
| 598 | if (oggstream->page.start_granule == AV_NOPTS_VALUE) |
||
| 599 | oggstream->page.start_granule = pkt->pts; |
||
| 600 | |||
| 601 | ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule, 0); |
||
| 602 | if (ret < 0) |
||
| 603 | return ret; |
||
| 604 | |||
| 605 | ogg_write_pages(s, 0); |
||
| 606 | |||
| 607 | oggstream->last_granule = granule; |
||
| 608 | |||
| 609 | return 0; |
||
| 610 | } |
||
| 611 | |||
| 612 | static int ogg_write_packet(AVFormatContext *s, AVPacket *pkt) |
||
| 613 | { |
||
| 614 | int i; |
||
| 615 | |||
| 616 | if (pkt) |
||
| 617 | return ogg_write_packet_internal(s, pkt); |
||
| 618 | |||
| 619 | for (i = 0; i < s->nb_streams; i++) { |
||
| 620 | OGGStreamContext *oggstream = s->streams[i]->priv_data; |
||
| 621 | if (oggstream->page.segments_count) |
||
| 622 | ogg_buffer_page(s, oggstream); |
||
| 623 | } |
||
| 624 | |||
| 625 | ogg_write_pages(s, 2); |
||
| 626 | return 1; |
||
| 627 | } |
||
| 628 | |||
| 629 | static int ogg_write_trailer(AVFormatContext *s) |
||
| 630 | { |
||
| 631 | int i; |
||
| 632 | |||
| 633 | /* flush current page if needed */ |
||
| 634 | for (i = 0; i < s->nb_streams; i++) { |
||
| 635 | OGGStreamContext *oggstream = s->streams[i]->priv_data; |
||
| 636 | |||
| 637 | if (oggstream->page.size > 0) |
||
| 638 | ogg_buffer_page(s, oggstream); |
||
| 639 | } |
||
| 640 | |||
| 641 | ogg_write_pages(s, 1); |
||
| 642 | |||
| 643 | for (i = 0; i < s->nb_streams; i++) { |
||
| 644 | AVStream *st = s->streams[i]; |
||
| 645 | OGGStreamContext *oggstream = st->priv_data; |
||
| 646 | if (st->codec->codec_id == AV_CODEC_ID_FLAC || |
||
| 647 | st->codec->codec_id == AV_CODEC_ID_SPEEX || |
||
| 648 | st->codec->codec_id == AV_CODEC_ID_OPUS) { |
||
| 649 | av_freep(&oggstream->header[0]); |
||
| 650 | } |
||
| 651 | av_freep(&oggstream->header[1]); |
||
| 652 | av_freep(&st->priv_data); |
||
| 653 | } |
||
| 654 | return 0; |
||
| 655 | } |
||
| 656 | |||
| 657 | #if CONFIG_OGG_MUXER |
||
| 658 | OGG_CLASS(ogg, Ogg) |
||
| 659 | AVOutputFormat ff_ogg_muxer = { |
||
| 660 | .name = "ogg", |
||
| 661 | .long_name = NULL_IF_CONFIG_SMALL("Ogg"), |
||
| 662 | .mime_type = "application/ogg", |
||
| 663 | .extensions = "ogg,ogv" |
||
| 664 | #if !CONFIG_SPX_MUXER |
||
| 665 | ",spx" |
||
| 666 | #endif |
||
| 667 | #if !CONFIG_OPUS_MUXER |
||
| 668 | ",opus" |
||
| 669 | #endif |
||
| 670 | , |
||
| 671 | .priv_data_size = sizeof(OGGContext), |
||
| 672 | .audio_codec = CONFIG_LIBVORBIS_ENCODER ? |
||
| 673 | AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC, |
||
| 674 | .video_codec = AV_CODEC_ID_THEORA, |
||
| 675 | .write_header = ogg_write_header, |
||
| 676 | .write_packet = ogg_write_packet, |
||
| 677 | .write_trailer = ogg_write_trailer, |
||
| 678 | .flags = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH, |
||
| 679 | .priv_class = &ogg_muxer_class, |
||
| 680 | }; |
||
| 681 | #endif |
||
| 682 | |||
| 683 | #if CONFIG_OGA_MUXER |
||
| 684 | OGG_CLASS(oga, Ogg audio) |
||
| 685 | AVOutputFormat ff_oga_muxer = { |
||
| 686 | .name = "oga", |
||
| 687 | .long_name = NULL_IF_CONFIG_SMALL("Ogg Audio"), |
||
| 688 | .mime_type = "audio/ogg", |
||
| 689 | .extensions = "oga", |
||
| 690 | .priv_data_size = sizeof(OGGContext), |
||
| 691 | .audio_codec = CONFIG_LIBVORBIS_ENCODER ? |
||
| 692 | AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC, |
||
| 693 | .write_header = ogg_write_header, |
||
| 694 | .write_packet = ogg_write_packet, |
||
| 695 | .write_trailer = ogg_write_trailer, |
||
| 696 | .flags = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH, |
||
| 697 | .priv_class = &oga_muxer_class, |
||
| 698 | }; |
||
| 699 | #endif |
||
| 700 | |||
| 701 | #if CONFIG_SPX_MUXER |
||
| 702 | OGG_CLASS(spx, Ogg Speex) |
||
| 703 | AVOutputFormat ff_spx_muxer = { |
||
| 704 | .name = "spx", |
||
| 705 | .long_name = NULL_IF_CONFIG_SMALL("Ogg Speex"), |
||
| 706 | .mime_type = "audio/ogg", |
||
| 707 | .extensions = "spx", |
||
| 708 | .priv_data_size = sizeof(OGGContext), |
||
| 709 | .audio_codec = AV_CODEC_ID_SPEEX, |
||
| 710 | .write_header = ogg_write_header, |
||
| 711 | .write_packet = ogg_write_packet, |
||
| 712 | .write_trailer = ogg_write_trailer, |
||
| 713 | .flags = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH, |
||
| 714 | .priv_class = &spx_muxer_class, |
||
| 715 | }; |
||
| 716 | #endif |
||
| 717 | |||
| 718 | #if CONFIG_OPUS_MUXER |
||
| 719 | OGG_CLASS(opus, Ogg Opus) |
||
| 720 | AVOutputFormat ff_opus_muxer = { |
||
| 721 | .name = "opus", |
||
| 722 | .long_name = NULL_IF_CONFIG_SMALL("Ogg Opus"), |
||
| 723 | .mime_type = "audio/ogg", |
||
| 724 | .extensions = "opus", |
||
| 725 | .priv_data_size = sizeof(OGGContext), |
||
| 726 | .audio_codec = AV_CODEC_ID_OPUS, |
||
| 727 | .write_header = ogg_write_header, |
||
| 728 | .write_packet = ogg_write_packet, |
||
| 729 | .write_trailer = ogg_write_trailer, |
||
| 730 | .flags = AVFMT_TS_NEGATIVE | AVFMT_ALLOW_FLUSH, |
||
| 731 | .priv_class = &opus_muxer_class, |
||
| 732 | }; |
||
| 733 | #endif |