diff options
Diffstat (limited to 'ffmpeg1/libavformat/oggparseopus.c')
| -rw-r--r-- | ffmpeg1/libavformat/oggparseopus.c | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/ffmpeg1/libavformat/oggparseopus.c b/ffmpeg1/libavformat/oggparseopus.c deleted file mode 100644 index 0e8f1ca..0000000 --- a/ffmpeg1/libavformat/oggparseopus.c +++ /dev/null @@ -1,135 +0,0 @@ -/* - * Opus parser for Ogg - * Copyright (c) 2012 Nicolas George - * - * 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 <string.h> - -#include "libavutil/intreadwrite.h" -#include "avformat.h" -#include "internal.h" -#include "oggdec.h" - -struct oggopus_private { - int need_comments; - unsigned pre_skip; - int64_t cur_dts; -}; - -#define OPUS_HEAD_SIZE 19 - -static int opus_header(AVFormatContext *avf, int idx) -{ - struct ogg *ogg = avf->priv_data; - struct ogg_stream *os = &ogg->streams[idx]; - AVStream *st = avf->streams[idx]; - struct oggopus_private *priv = os->private; - uint8_t *packet = os->buf + os->pstart; - uint8_t *extradata; - - if (!priv) { - priv = os->private = av_mallocz(sizeof(*priv)); - if (!priv) - return AVERROR(ENOMEM); - } - if (os->flags & OGG_FLAG_BOS) { - if (os->psize < OPUS_HEAD_SIZE || (AV_RL8(packet + 8) & 0xF0) != 0) - return AVERROR_INVALIDDATA; - st->codec->codec_type = AVMEDIA_TYPE_AUDIO; - st->codec->codec_id = AV_CODEC_ID_OPUS; - st->codec->channels = AV_RL8 (packet + 9); - priv->pre_skip = AV_RL16(packet + 10); - /*orig_sample_rate = AV_RL32(packet + 12);*/ - /*gain = AV_RL16(packet + 16);*/ - /*channel_map = AV_RL8 (packet + 18);*/ - - extradata = av_malloc(os->psize + FF_INPUT_BUFFER_PADDING_SIZE); - if (!extradata) - return AVERROR(ENOMEM); - memcpy(extradata, packet, os->psize); - st->codec->extradata = extradata; - st->codec->extradata_size = os->psize; - - st->codec->sample_rate = 48000; - avpriv_set_pts_info(st, 64, 1, 48000); - priv->need_comments = 1; - return 1; - } - - if (priv->need_comments) { - if (os->psize < 8 || memcmp(packet, "OpusTags", 8)) - return AVERROR_INVALIDDATA; - ff_vorbis_comment(avf, &st->metadata, packet + 8, os->psize - 8); - priv->need_comments--; - return 1; - } - return 0; -} - -static int opus_packet(AVFormatContext *avf, int idx) -{ - struct ogg *ogg = avf->priv_data; - struct ogg_stream *os = &ogg->streams[idx]; - AVStream *st = avf->streams[idx]; - struct oggopus_private *priv = os->private; - uint8_t *packet = os->buf + os->pstart; - unsigned toc, toc_config, toc_count, frame_size, nb_frames = 1; - - if (!os->psize) - return AVERROR_INVALIDDATA; - toc = *packet; - toc_config = toc >> 3; - toc_count = toc & 3; - frame_size = toc_config < 12 ? FFMAX(480, 960 * (toc_config & 3)) : - toc_config < 16 ? 480 << (toc_config & 1) : - 120 << (toc_config & 3); - if (toc_count == 3) { - if (os->psize < 2) - return AVERROR_INVALIDDATA; - nb_frames = packet[1] & 0x3F; - } else if (toc_count) { - nb_frames = 2; - } - os->pduration = frame_size * nb_frames; - if (os->lastpts != AV_NOPTS_VALUE) { - if (st->start_time == AV_NOPTS_VALUE) - st->start_time = os->lastpts; - priv->cur_dts = os->lastdts = os->lastpts -= priv->pre_skip; - } - priv->cur_dts += os->pduration; - if ((os->flags & OGG_FLAG_EOS)) { - int64_t skip = priv->cur_dts - os->granule + priv->pre_skip; - skip = FFMIN(skip, os->pduration); - if (skip > 0) { - os->pduration = skip < os->pduration ? os->pduration - skip : 1; - av_log(avf, AV_LOG_WARNING, - "Last packet must be truncated to %d (unimplemented).\n", - os->pduration); - } - } - return 0; -} - -const struct ogg_codec ff_opus_codec = { - .name = "Opus", - .magic = "OpusHead", - .magicsize = 8, - .header = opus_header, - .packet = opus_packet, -}; |