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https://gitee.com/openharmony/third_party_ffmpeg
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4bf90e095b
To make it consistent with other muxers. The user can still control the generic flushing behaviour after write_header (same way as after packets) using the -flush_packets option, the default typically means to flush unless a non-streamed file output is used. Therefore this change should have no adverse effect on streaming, even if it is assumed that the first packet has a clean buffer, so small seekbacks within the output buffer work even when the IO context is not seekable. Signed-off-by: Marton Balint <cus@passwd.hu>
51 lines
2.1 KiB
C
51 lines
2.1 KiB
C
/*
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* Common functions for the frame{crc,md5} muxers
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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 "internal.h"
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int ff_framehash_write_header(AVFormatContext *s)
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{
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int i;
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if (s->nb_streams && !(s->flags & AVFMT_FLAG_BITEXACT))
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avio_printf(s->pb, "#software: %s\n", LIBAVFORMAT_IDENT);
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for (i = 0; i < s->nb_streams; i++) {
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AVStream *st = s->streams[i];
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AVCodecParameters *avctx = st->codecpar;
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char buf[256] = { 0 };
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avio_printf(s->pb, "#tb %d: %d/%d\n", i, st->time_base.num, st->time_base.den);
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avio_printf(s->pb, "#media_type %d: %s\n", i, av_get_media_type_string(avctx->codec_type));
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avio_printf(s->pb, "#codec_id %d: %s\n", i, avcodec_get_name(avctx->codec_id));
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switch (avctx->codec_type) {
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case AVMEDIA_TYPE_AUDIO:
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av_get_channel_layout_string(buf, sizeof(buf), avctx->channels, avctx->channel_layout);
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avio_printf(s->pb, "#sample_rate %d: %d\n", i,avctx->sample_rate);
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avio_printf(s->pb, "#channel_layout %d: %"PRIx64"\n", i,avctx->channel_layout);
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avio_printf(s->pb, "#channel_layout_name %d: %s\n", i, buf);
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break;
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case AVMEDIA_TYPE_VIDEO:
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avio_printf(s->pb, "#dimensions %d: %dx%d\n", i, avctx->width, avctx->height);
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avio_printf(s->pb, "#sar %d: %d/%d\n", i, st->sample_aspect_ratio.num, st->sample_aspect_ratio.den);
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break;
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}
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}
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return 0;
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}
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