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898 lines
21 KiB
898 lines
21 KiB
/* |
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* RAW muxer and demuxer |
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* Copyright (c) 2001 Fabrice Bellard. |
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* Copyright (c) 2005 Alex Beregszaszi |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "avformat.h" |
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#include "parser.h" |
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|
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#ifdef CONFIG_MUXERS |
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/* simple formats */ |
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static int raw_write_header(struct AVFormatContext *s) |
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{ |
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return 0; |
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} |
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|
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static int flac_write_header(struct AVFormatContext *s) |
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{ |
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static const uint8_t header[8] = { |
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0x66, 0x4C, 0x61, 0x43, 0x80, 0x00, 0x00, 0x22 |
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}; |
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uint8_t *streaminfo = s->streams[0]->codec->extradata; |
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int len = s->streams[0]->codec->extradata_size; |
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if(streaminfo != NULL && len > 0) { |
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put_buffer(&s->pb, header, 8); |
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put_buffer(&s->pb, streaminfo, len); |
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} |
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return 0; |
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} |
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|
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static int raw_write_packet(struct AVFormatContext *s, AVPacket *pkt) |
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{ |
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put_buffer(&s->pb, pkt->data, pkt->size); |
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put_flush_packet(&s->pb); |
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return 0; |
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} |
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static int raw_write_trailer(struct AVFormatContext *s) |
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{ |
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return 0; |
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} |
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#endif //CONFIG_MUXERS |
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|
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/* raw input */ |
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static int raw_read_header(AVFormatContext *s, AVFormatParameters *ap) |
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{ |
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AVStream *st; |
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int id; |
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st = av_new_stream(s, 0); |
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if (!st) |
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return AVERROR_NOMEM; |
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|
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id = s->iformat->value; |
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if (id == CODEC_ID_RAWVIDEO) { |
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st->codec->codec_type = CODEC_TYPE_VIDEO; |
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} else { |
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st->codec->codec_type = CODEC_TYPE_AUDIO; |
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} |
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st->codec->codec_id = id; |
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|
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switch(st->codec->codec_type) { |
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case CODEC_TYPE_AUDIO: |
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st->codec->sample_rate = ap->sample_rate; |
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st->codec->channels = ap->channels; |
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av_set_pts_info(st, 64, 1, st->codec->sample_rate); |
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break; |
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case CODEC_TYPE_VIDEO: |
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av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den); |
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st->codec->width = ap->width; |
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st->codec->height = ap->height; |
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st->codec->pix_fmt = ap->pix_fmt; |
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if(st->codec->pix_fmt == PIX_FMT_NONE) |
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st->codec->pix_fmt= PIX_FMT_YUV420P; |
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break; |
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default: |
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return -1; |
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} |
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return 0; |
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} |
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#define RAW_PACKET_SIZE 1024 |
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static int raw_read_packet(AVFormatContext *s, AVPacket *pkt) |
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{ |
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int ret, size; |
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// AVStream *st = s->streams[0]; |
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size= RAW_PACKET_SIZE; |
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ret= av_get_packet(&s->pb, pkt, size); |
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pkt->stream_index = 0; |
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if (ret <= 0) { |
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return AVERROR_IO; |
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} |
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/* note: we need to modify the packet size here to handle the last |
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packet */ |
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pkt->size = ret; |
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return ret; |
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} |
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static int raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt) |
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{ |
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int ret, size; |
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size = RAW_PACKET_SIZE; |
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if (av_new_packet(pkt, size) < 0) |
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return AVERROR_IO; |
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pkt->pos= url_ftell(&s->pb); |
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pkt->stream_index = 0; |
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ret = get_partial_buffer(&s->pb, pkt->data, size); |
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if (ret <= 0) { |
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av_free_packet(pkt); |
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return AVERROR_IO; |
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} |
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pkt->size = ret; |
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return ret; |
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} |
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// http://www.artificis.hu/files/texts/ingenient.txt |
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static int ingenient_read_packet(AVFormatContext *s, AVPacket *pkt) |
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{ |
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int ret, size, w, h, unk1, unk2; |
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if (get_le32(&s->pb) != MKTAG('M', 'J', 'P', 'G')) |
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return AVERROR_IO; // FIXME |
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size = get_le32(&s->pb); |
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w = get_le16(&s->pb); |
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h = get_le16(&s->pb); |
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url_fskip(&s->pb, 8); // zero + size (padded?) |
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url_fskip(&s->pb, 2); |
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unk1 = get_le16(&s->pb); |
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unk2 = get_le16(&s->pb); |
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url_fskip(&s->pb, 22); // ascii timestamp |
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av_log(NULL, AV_LOG_DEBUG, "Ingenient packet: size=%d, width=%d, height=%d, unk1=%d unk2=%d\n", |
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size, w, h, unk1, unk2); |
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if (av_new_packet(pkt, size) < 0) |
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return AVERROR_IO; |
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pkt->pos = url_ftell(&s->pb); |
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pkt->stream_index = 0; |
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ret = get_buffer(&s->pb, pkt->data, size); |
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if (ret <= 0) { |
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av_free_packet(pkt); |
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return AVERROR_IO; |
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} |
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pkt->size = ret; |
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return ret; |
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} |
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static int raw_read_close(AVFormatContext *s) |
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{ |
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return 0; |
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} |
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int pcm_read_seek(AVFormatContext *s, |
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int stream_index, int64_t timestamp, int flags) |
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{ |
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AVStream *st; |
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int block_align, byte_rate; |
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int64_t pos; |
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st = s->streams[0]; |
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block_align = st->codec->block_align ? st->codec->block_align : |
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(av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3; |
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byte_rate = st->codec->bit_rate ? st->codec->bit_rate >> 3 : |
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block_align * st->codec->sample_rate; |
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if (block_align <= 0 || byte_rate <= 0) |
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return -1; |
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/* compute the position by aligning it to block_align */ |
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pos = av_rescale_rnd(timestamp * byte_rate, |
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st->time_base.num, |
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st->time_base.den * (int64_t)block_align, |
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(flags & AVSEEK_FLAG_BACKWARD) ? AV_ROUND_DOWN : AV_ROUND_UP); |
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pos *= block_align; |
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/* recompute exact position */ |
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st->cur_dts = av_rescale(pos, st->time_base.den, byte_rate * (int64_t)st->time_base.num); |
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url_fseek(&s->pb, pos + s->data_offset, SEEK_SET); |
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return 0; |
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} |
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/* ac3 read */ |
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static int ac3_read_header(AVFormatContext *s, |
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AVFormatParameters *ap) |
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{ |
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AVStream *st; |
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st = av_new_stream(s, 0); |
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if (!st) |
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return AVERROR_NOMEM; |
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st->codec->codec_type = CODEC_TYPE_AUDIO; |
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st->codec->codec_id = CODEC_ID_AC3; |
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st->need_parsing = AVSTREAM_PARSE_FULL; |
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/* the parameters will be extracted from the compressed bitstream */ |
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return 0; |
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} |
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static int shorten_read_header(AVFormatContext *s, |
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AVFormatParameters *ap) |
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{ |
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AVStream *st; |
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st = av_new_stream(s, 0); |
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if (!st) |
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return AVERROR_NOMEM; |
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st->codec->codec_type = CODEC_TYPE_AUDIO; |
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st->codec->codec_id = CODEC_ID_SHORTEN; |
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st->need_parsing = AVSTREAM_PARSE_FULL; |
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/* the parameters will be extracted from the compressed bitstream */ |
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return 0; |
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} |
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/* flac read */ |
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static int flac_read_header(AVFormatContext *s, |
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AVFormatParameters *ap) |
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{ |
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AVStream *st; |
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st = av_new_stream(s, 0); |
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if (!st) |
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return AVERROR_NOMEM; |
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st->codec->codec_type = CODEC_TYPE_AUDIO; |
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st->codec->codec_id = CODEC_ID_FLAC; |
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st->need_parsing = AVSTREAM_PARSE_FULL; |
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/* the parameters will be extracted from the compressed bitstream */ |
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return 0; |
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} |
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/* dts read */ |
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static int dts_read_header(AVFormatContext *s, |
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AVFormatParameters *ap) |
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{ |
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AVStream *st; |
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st = av_new_stream(s, 0); |
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if (!st) |
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return AVERROR_NOMEM; |
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st->codec->codec_type = CODEC_TYPE_AUDIO; |
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st->codec->codec_id = CODEC_ID_DTS; |
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st->need_parsing = AVSTREAM_PARSE_FULL; |
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/* the parameters will be extracted from the compressed bitstream */ |
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return 0; |
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} |
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/* aac read */ |
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static int aac_read_header(AVFormatContext *s, |
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AVFormatParameters *ap) |
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{ |
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AVStream *st; |
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st = av_new_stream(s, 0); |
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if (!st) |
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return AVERROR_NOMEM; |
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st->codec->codec_type = CODEC_TYPE_AUDIO; |
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st->codec->codec_id = CODEC_ID_AAC; |
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st->need_parsing = AVSTREAM_PARSE_FULL; |
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/* the parameters will be extracted from the compressed bitstream */ |
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return 0; |
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} |
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/* mpeg1/h263 input */ |
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static int video_read_header(AVFormatContext *s, |
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AVFormatParameters *ap) |
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{ |
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AVStream *st; |
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st = av_new_stream(s, 0); |
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if (!st) |
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return AVERROR_NOMEM; |
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st->codec->codec_type = CODEC_TYPE_VIDEO; |
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st->codec->codec_id = s->iformat->value; |
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st->need_parsing = AVSTREAM_PARSE_FULL; |
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/* for mjpeg, specify frame rate */ |
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/* for mpeg4 specify it too (most mpeg4 streams dont have the fixed_vop_rate set ...)*/ |
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if (ap->time_base.num) { |
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av_set_pts_info(st, 64, ap->time_base.num, ap->time_base.den); |
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} else if ( st->codec->codec_id == CODEC_ID_MJPEG || |
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st->codec->codec_id == CODEC_ID_MPEG4 || |
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st->codec->codec_id == CODEC_ID_H264) { |
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av_set_pts_info(st, 64, 1, 25); |
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} |
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return 0; |
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} |
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#define SEQ_START_CODE 0x000001b3 |
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#define GOP_START_CODE 0x000001b8 |
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#define PICTURE_START_CODE 0x00000100 |
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#define SLICE_START_CODE 0x00000101 |
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#define PACK_START_CODE 0x000001ba |
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#define VIDEO_ID 0x000001e0 |
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#define AUDIO_ID 0x000001c0 |
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static int mpegvideo_probe(AVProbeData *p) |
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{ |
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uint32_t code= -1; |
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int pic=0, seq=0, slice=0, pspack=0, pes=0; |
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int i; |
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for(i=0; i<p->buf_size; i++){ |
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code = (code<<8) + p->buf[i]; |
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if ((code & 0xffffff00) == 0x100) { |
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switch(code){ |
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case SEQ_START_CODE: seq++; break; |
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case PICTURE_START_CODE: pic++; break; |
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case SLICE_START_CODE: slice++; break; |
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case PACK_START_CODE: pspack++; break; |
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} |
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if ((code & 0x1f0) == VIDEO_ID) pes++; |
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else if((code & 0x1e0) == AUDIO_ID) pes++; |
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} |
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} |
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if(seq && seq*9<=pic*10 && pic*9<=slice*10 && !pspack && !pes) |
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return AVPROBE_SCORE_MAX/2+1; // +1 for .mpg |
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return 0; |
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} |
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#define VISUAL_OBJECT_START_CODE 0x000001b5 |
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#define VOP_START_CODE 0x000001b6 |
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static int mpeg4video_probe(AVProbeData *probe_packet) |
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{ |
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uint32_t temp_buffer= -1; |
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int VO=0, VOL=0, VOP = 0, VISO = 0, res=0; |
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int i; |
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for(i=0; i<probe_packet->buf_size; i++){ |
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temp_buffer = (temp_buffer<<8) + probe_packet->buf[i]; |
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if ((temp_buffer & 0xffffff00) == 0x100) { |
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switch(temp_buffer){ |
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case VOP_START_CODE: VOP++; break; |
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case VISUAL_OBJECT_START_CODE: VISO++; break; |
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case 0x100 ... 0x11F: VO++; break; |
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case 0x120 ... 0x12F: VOL++; break; |
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case 0x130 ... 0x1AF: |
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case 0x1B7 ... 0x1B9: |
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case 0x1C4 ... 0x1FF: res++; break; |
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} |
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} |
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} |
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if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res==0) |
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return AVPROBE_SCORE_MAX/2; |
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return 0; |
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} |
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static int h263_probe(AVProbeData *p) |
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{ |
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int code; |
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const uint8_t *d; |
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d = p->buf; |
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code = (d[0] << 14) | (d[1] << 6) | (d[2] >> 2); |
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if (code == 0x20) { |
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return 50; |
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} |
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return 0; |
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} |
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static int h261_probe(AVProbeData *p) |
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{ |
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int code; |
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const uint8_t *d; |
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d = p->buf; |
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code = (d[0] << 12) | (d[1] << 4) | (d[2] >> 4); |
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if (code == 0x10) { |
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return 50; |
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} |
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return 0; |
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} |
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static int ac3_probe(AVProbeData *p) |
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{ |
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int max_frames, first_frames, frames; |
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uint8_t *buf, *buf2, *end; |
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AC3HeaderInfo hdr; |
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if(p->buf_size < 7) |
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return 0; |
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max_frames = 0; |
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buf = p->buf; |
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end = buf + FFMIN(4096, p->buf_size - 7); |
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for(; buf < end; buf++) { |
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buf2 = buf; |
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for(frames = 0; buf2 < end; frames++) { |
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if(ff_ac3_parse_header(buf2, &hdr) < 0) |
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break; |
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buf2 += hdr.frame_size; |
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} |
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max_frames = FFMAX(max_frames, frames); |
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if(buf == p->buf) |
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first_frames = frames; |
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} |
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if (first_frames>=3) return AVPROBE_SCORE_MAX * 3 / 4; |
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else if(max_frames>=3) return AVPROBE_SCORE_MAX / 2; |
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else if(max_frames>=1) return 1; |
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else return 0; |
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} |
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AVInputFormat shorten_demuxer = { |
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"shn", |
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"raw shorten", |
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0, |
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NULL, |
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shorten_read_header, |
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raw_read_partial_packet, |
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raw_read_close, |
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.flags= AVFMT_GENERIC_INDEX, |
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.extensions = "shn", |
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}; |
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AVInputFormat flac_demuxer = { |
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"flac", |
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"raw flac", |
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0, |
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NULL, |
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flac_read_header, |
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raw_read_partial_packet, |
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raw_read_close, |
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.flags= AVFMT_GENERIC_INDEX, |
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.extensions = "flac", |
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}; |
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#ifdef CONFIG_MUXERS |
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AVOutputFormat flac_muxer = { |
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"flac", |
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"raw flac", |
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"audio/x-flac", |
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"flac", |
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0, |
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CODEC_ID_FLAC, |
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0, |
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flac_write_header, |
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raw_write_packet, |
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raw_write_trailer, |
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.flags= AVFMT_NOTIMESTAMPS, |
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}; |
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#endif //CONFIG_MUXERS |
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|
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#ifdef CONFIG_AC3_DEMUXER |
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AVInputFormat ac3_demuxer = { |
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"ac3", |
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"raw ac3", |
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0, |
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ac3_probe, |
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ac3_read_header, |
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raw_read_partial_packet, |
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raw_read_close, |
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.flags= AVFMT_GENERIC_INDEX, |
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.extensions = "ac3", |
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}; |
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#endif |
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#ifdef CONFIG_MUXERS |
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AVOutputFormat ac3_muxer = { |
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"ac3", |
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"raw ac3", |
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"audio/x-ac3", |
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"ac3", |
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0, |
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CODEC_ID_AC3, |
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0, |
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raw_write_header, |
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raw_write_packet, |
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raw_write_trailer, |
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.flags= AVFMT_NOTIMESTAMPS, |
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}; |
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#endif //CONFIG_MUXERS |
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|
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AVInputFormat dts_demuxer = { |
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"dts", |
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"raw dts", |
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0, |
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NULL, |
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dts_read_header, |
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raw_read_partial_packet, |
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raw_read_close, |
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.flags= AVFMT_GENERIC_INDEX, |
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.extensions = "dts", |
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}; |
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|
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AVInputFormat aac_demuxer = { |
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"aac", |
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"ADTS AAC", |
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0, |
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NULL, |
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aac_read_header, |
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raw_read_partial_packet, |
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raw_read_close, |
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.flags= AVFMT_GENERIC_INDEX, |
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.extensions = "aac", |
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}; |
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|
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AVInputFormat h261_demuxer = { |
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"h261", |
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"raw h261", |
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0, |
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h261_probe, |
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video_read_header, |
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raw_read_partial_packet, |
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raw_read_close, |
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.flags= AVFMT_GENERIC_INDEX, |
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.extensions = "h261", |
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.value = CODEC_ID_H261, |
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}; |
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|
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#ifdef CONFIG_MUXERS |
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AVOutputFormat h261_muxer = { |
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"h261", |
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"raw h261", |
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"video/x-h261", |
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"h261", |
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0, |
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0, |
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CODEC_ID_H261, |
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raw_write_header, |
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raw_write_packet, |
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raw_write_trailer, |
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.flags= AVFMT_NOTIMESTAMPS, |
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}; |
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#endif //CONFIG_MUXERS |
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|
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AVInputFormat h263_demuxer = { |
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"h263", |
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"raw h263", |
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0, |
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h263_probe, |
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video_read_header, |
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raw_read_partial_packet, |
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raw_read_close, |
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.flags= AVFMT_GENERIC_INDEX, |
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// .extensions = "h263", //FIXME remove after writing mpeg4_probe |
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.value = CODEC_ID_H263, |
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}; |
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|
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#ifdef CONFIG_MUXERS |
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AVOutputFormat h263_muxer = { |
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"h263", |
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"raw h263", |
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"video/x-h263", |
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"h263", |
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0, |
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0, |
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CODEC_ID_H263, |
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raw_write_header, |
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raw_write_packet, |
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raw_write_trailer, |
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.flags= AVFMT_NOTIMESTAMPS, |
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}; |
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#endif //CONFIG_MUXERS |
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|
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AVInputFormat m4v_demuxer = { |
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"m4v", |
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"raw MPEG4 video format", |
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0, |
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mpeg4video_probe, /** probing for mpeg4 data */ |
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video_read_header, |
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raw_read_partial_packet, |
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raw_read_close, |
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.flags= AVFMT_GENERIC_INDEX, |
|
.extensions = "m4v", //FIXME remove after writing mpeg4_probe |
|
.value = CODEC_ID_MPEG4, |
|
}; |
|
|
|
#ifdef CONFIG_MUXERS |
|
AVOutputFormat m4v_muxer = { |
|
"m4v", |
|
"raw MPEG4 video format", |
|
NULL, |
|
"m4v", |
|
0, |
|
CODEC_ID_NONE, |
|
CODEC_ID_MPEG4, |
|
raw_write_header, |
|
raw_write_packet, |
|
raw_write_trailer, |
|
.flags= AVFMT_NOTIMESTAMPS, |
|
}; |
|
#endif //CONFIG_MUXERS |
|
|
|
AVInputFormat h264_demuxer = { |
|
"h264", |
|
"raw H264 video format", |
|
0, |
|
NULL /*mpegvideo_probe*/, |
|
video_read_header, |
|
raw_read_partial_packet, |
|
raw_read_close, |
|
.flags= AVFMT_GENERIC_INDEX, |
|
.extensions = "h26l,h264,264", //FIXME remove after writing mpeg4_probe |
|
.value = CODEC_ID_H264, |
|
}; |
|
|
|
#ifdef CONFIG_MUXERS |
|
AVOutputFormat h264_muxer = { |
|
"h264", |
|
"raw H264 video format", |
|
NULL, |
|
"h264", |
|
0, |
|
CODEC_ID_NONE, |
|
CODEC_ID_H264, |
|
raw_write_header, |
|
raw_write_packet, |
|
raw_write_trailer, |
|
.flags= AVFMT_NOTIMESTAMPS, |
|
}; |
|
#endif //CONFIG_MUXERS |
|
|
|
AVInputFormat mpegvideo_demuxer = { |
|
"mpegvideo", |
|
"MPEG video", |
|
0, |
|
mpegvideo_probe, |
|
video_read_header, |
|
raw_read_partial_packet, |
|
raw_read_close, |
|
.flags= AVFMT_GENERIC_INDEX, |
|
.value = CODEC_ID_MPEG1VIDEO, |
|
}; |
|
|
|
#ifdef CONFIG_MUXERS |
|
AVOutputFormat mpeg1video_muxer = { |
|
"mpeg1video", |
|
"MPEG video", |
|
"video/x-mpeg", |
|
"mpg,mpeg,m1v", |
|
0, |
|
0, |
|
CODEC_ID_MPEG1VIDEO, |
|
raw_write_header, |
|
raw_write_packet, |
|
raw_write_trailer, |
|
.flags= AVFMT_NOTIMESTAMPS, |
|
}; |
|
#endif //CONFIG_MUXERS |
|
|
|
#ifdef CONFIG_MUXERS |
|
AVOutputFormat mpeg2video_muxer = { |
|
"mpeg2video", |
|
"MPEG2 video", |
|
NULL, |
|
"m2v", |
|
0, |
|
0, |
|
CODEC_ID_MPEG2VIDEO, |
|
raw_write_header, |
|
raw_write_packet, |
|
raw_write_trailer, |
|
.flags= AVFMT_NOTIMESTAMPS, |
|
}; |
|
#endif //CONFIG_MUXERS |
|
|
|
AVInputFormat mjpeg_demuxer = { |
|
"mjpeg", |
|
"MJPEG video", |
|
0, |
|
NULL, |
|
video_read_header, |
|
raw_read_partial_packet, |
|
raw_read_close, |
|
.flags= AVFMT_GENERIC_INDEX, |
|
.extensions = "mjpg,mjpeg", |
|
.value = CODEC_ID_MJPEG, |
|
}; |
|
|
|
AVInputFormat ingenient_demuxer = { |
|
"ingenient", |
|
"Ingenient MJPEG", |
|
0, |
|
NULL, |
|
video_read_header, |
|
ingenient_read_packet, |
|
raw_read_close, |
|
.flags= AVFMT_GENERIC_INDEX, |
|
.extensions = "cgi", // FIXME |
|
.value = CODEC_ID_MJPEG, |
|
}; |
|
|
|
#ifdef CONFIG_MUXERS |
|
AVOutputFormat mjpeg_muxer = { |
|
"mjpeg", |
|
"MJPEG video", |
|
"video/x-mjpeg", |
|
"mjpg,mjpeg", |
|
0, |
|
0, |
|
CODEC_ID_MJPEG, |
|
raw_write_header, |
|
raw_write_packet, |
|
raw_write_trailer, |
|
.flags= AVFMT_NOTIMESTAMPS, |
|
}; |
|
#endif //CONFIG_MUXERS |
|
|
|
AVInputFormat vc1_demuxer = { |
|
"vc1", |
|
"raw vc1", |
|
0, |
|
NULL /* vc1_probe */, |
|
video_read_header, |
|
raw_read_partial_packet, |
|
raw_read_close, |
|
.extensions = "vc1", |
|
.value = CODEC_ID_VC1, |
|
}; |
|
|
|
/* pcm formats */ |
|
|
|
#define PCMINPUTDEF(name, long_name, ext, codec) \ |
|
AVInputFormat pcm_ ## name ## _demuxer = {\ |
|
#name,\ |
|
long_name,\ |
|
0,\ |
|
NULL,\ |
|
raw_read_header,\ |
|
raw_read_packet,\ |
|
raw_read_close,\ |
|
pcm_read_seek,\ |
|
.flags= AVFMT_GENERIC_INDEX,\ |
|
.extensions = ext,\ |
|
.value = codec,\ |
|
}; |
|
|
|
#define PCMOUTPUTDEF(name, long_name, ext, codec) \ |
|
AVOutputFormat pcm_ ## name ## _muxer = {\ |
|
#name,\ |
|
long_name,\ |
|
NULL,\ |
|
ext,\ |
|
0,\ |
|
codec,\ |
|
0,\ |
|
raw_write_header,\ |
|
raw_write_packet,\ |
|
raw_write_trailer,\ |
|
.flags= AVFMT_NOTIMESTAMPS,\ |
|
}; |
|
|
|
|
|
#if !defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS) |
|
#define PCMDEF(name, long_name, ext, codec) \ |
|
PCMINPUTDEF(name, long_name, ext, codec) |
|
#elif defined(CONFIG_MUXERS) && !defined(CONFIG_DEMUXERS) |
|
#define PCMDEF(name, long_name, ext, codec) \ |
|
PCMOUTPUTDEF(name, long_name, ext, codec) |
|
#elif defined(CONFIG_MUXERS) && defined(CONFIG_DEMUXERS) |
|
#define PCMDEF(name, long_name, ext, codec) \ |
|
PCMINPUTDEF(name, long_name, ext, codec)\ |
|
PCMOUTPUTDEF(name, long_name, ext, codec) |
|
#else |
|
#define PCMDEF(name, long_name, ext, codec) |
|
#endif |
|
|
|
#ifdef WORDS_BIGENDIAN |
|
#define BE_DEF(s) s |
|
#define LE_DEF(s) NULL |
|
#else |
|
#define BE_DEF(s) NULL |
|
#define LE_DEF(s) s |
|
#endif |
|
|
|
|
|
PCMDEF(s16le, "pcm signed 16 bit little endian format", |
|
LE_DEF("sw"), CODEC_ID_PCM_S16LE) |
|
|
|
PCMDEF(s16be, "pcm signed 16 bit big endian format", |
|
BE_DEF("sw"), CODEC_ID_PCM_S16BE) |
|
|
|
PCMDEF(u16le, "pcm unsigned 16 bit little endian format", |
|
LE_DEF("uw"), CODEC_ID_PCM_U16LE) |
|
|
|
PCMDEF(u16be, "pcm unsigned 16 bit big endian format", |
|
BE_DEF("uw"), CODEC_ID_PCM_U16BE) |
|
|
|
PCMDEF(s8, "pcm signed 8 bit format", |
|
"sb", CODEC_ID_PCM_S8) |
|
|
|
PCMDEF(u8, "pcm unsigned 8 bit format", |
|
"ub", CODEC_ID_PCM_U8) |
|
|
|
PCMDEF(mulaw, "pcm mu law format", |
|
"ul", CODEC_ID_PCM_MULAW) |
|
|
|
PCMDEF(alaw, "pcm A law format", |
|
"al", CODEC_ID_PCM_ALAW) |
|
|
|
static int rawvideo_read_packet(AVFormatContext *s, AVPacket *pkt) |
|
{ |
|
int packet_size, ret, width, height; |
|
AVStream *st = s->streams[0]; |
|
|
|
width = st->codec->width; |
|
height = st->codec->height; |
|
|
|
packet_size = avpicture_get_size(st->codec->pix_fmt, width, height); |
|
if (packet_size < 0) |
|
return -1; |
|
|
|
ret= av_get_packet(&s->pb, pkt, packet_size); |
|
|
|
pkt->stream_index = 0; |
|
if (ret != packet_size) { |
|
return AVERROR_IO; |
|
} else { |
|
return 0; |
|
} |
|
} |
|
|
|
AVInputFormat rawvideo_demuxer = { |
|
"rawvideo", |
|
"raw video format", |
|
0, |
|
NULL, |
|
raw_read_header, |
|
rawvideo_read_packet, |
|
raw_read_close, |
|
.flags= AVFMT_GENERIC_INDEX, |
|
.extensions = "yuv,cif,qcif", |
|
.value = CODEC_ID_RAWVIDEO, |
|
}; |
|
|
|
#ifdef CONFIG_MUXERS |
|
AVOutputFormat rawvideo_muxer = { |
|
"rawvideo", |
|
"raw video format", |
|
NULL, |
|
"yuv,rgb", |
|
0, |
|
CODEC_ID_NONE, |
|
CODEC_ID_RAWVIDEO, |
|
raw_write_header, |
|
raw_write_packet, |
|
raw_write_trailer, |
|
.flags= AVFMT_NOTIMESTAMPS, |
|
}; |
|
#endif //CONFIG_MUXERS |
|
|
|
#ifdef CONFIG_MUXERS |
|
static int null_write_packet(struct AVFormatContext *s, AVPacket *pkt) |
|
{ |
|
return 0; |
|
} |
|
|
|
AVOutputFormat null_muxer = { |
|
"null", |
|
"null video format", |
|
NULL, |
|
NULL, |
|
0, |
|
#ifdef WORDS_BIGENDIAN |
|
CODEC_ID_PCM_S16BE, |
|
#else |
|
CODEC_ID_PCM_S16LE, |
|
#endif |
|
CODEC_ID_RAWVIDEO, |
|
raw_write_header, |
|
null_write_packet, |
|
raw_write_trailer, |
|
.flags = AVFMT_NOFILE | AVFMT_RAWPICTURE | AVFMT_NOTIMESTAMPS, |
|
}; |
|
#endif //CONFIG_MUXERS
|
|
|