mirror of
https://git.ffmpeg.org/ffmpeg.git
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split ffm de/muxer
Originally committed as revision 13413 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Baptiste Coudurier
parent
ba26712b5c
commit
85a6b01da4
@ -44,8 +44,8 @@ OBJS-$(CONFIG_DV_MUXER) += dvenc.o
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OBJS-$(CONFIG_DXA_DEMUXER) += dxa.o riff.o
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OBJS-$(CONFIG_DXA_DEMUXER) += dxa.o riff.o
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OBJS-$(CONFIG_EA_CDATA_DEMUXER) += eacdata.o
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OBJS-$(CONFIG_EA_CDATA_DEMUXER) += eacdata.o
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OBJS-$(CONFIG_EA_DEMUXER) += electronicarts.o
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OBJS-$(CONFIG_EA_DEMUXER) += electronicarts.o
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OBJS-$(CONFIG_FFM_DEMUXER) += ffm.o
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OBJS-$(CONFIG_FFM_DEMUXER) += ffmdec.o
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OBJS-$(CONFIG_FFM_MUXER) += ffm.o
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OBJS-$(CONFIG_FFM_MUXER) += ffmenc.o
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OBJS-$(CONFIG_FLAC_DEMUXER) += raw.o
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OBJS-$(CONFIG_FLAC_DEMUXER) += raw.o
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OBJS-$(CONFIG_FLAC_MUXER) += raw.o
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OBJS-$(CONFIG_FLAC_MUXER) += raw.o
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OBJS-$(CONFIG_FLIC_DEMUXER) += flic.o
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OBJS-$(CONFIG_FLIC_DEMUXER) += flic.o
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60
libavformat/ffm.h
Normal file
60
libavformat/ffm.h
Normal file
@ -0,0 +1,60 @@
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/*
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* FFM (ffserver live feed) common header
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* Copyright (c) 2001 Fabrice Bellard.
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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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#ifndef FFMPEG_FFM_H
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#define FFMPEG_FFM_H
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#include "avformat.h"
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/* The FFM file is made of blocks of fixed size */
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#define FFM_HEADER_SIZE 14
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#define PACKET_ID 0x666d
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/* each packet contains frames (which can span several packets */
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#define FRAME_HEADER_SIZE 8
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#define FLAG_KEY_FRAME 0x01
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typedef struct FFMStream {
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int64_t pts;
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} FFMStream;
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enum {
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READ_HEADER,
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READ_DATA,
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};
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typedef struct FFMContext {
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/* only reading mode */
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offset_t write_index, file_size;
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int read_state;
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uint8_t header[FRAME_HEADER_SIZE];
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/* read and write */
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int first_packet; /* true if first packet, needed to set the discontinuity tag */
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int first_frame_in_packet; /* true if first frame in packet, needed to know if PTS information is valid */
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int packet_size;
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int frame_offset;
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int64_t pts;
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uint8_t *packet_ptr, *packet_end;
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uint8_t packet[FFM_PACKET_SIZE];
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} FFMContext;
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#endif /* FFMPEG_FFM_H */
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@ -1,5 +1,5 @@
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/*
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/*
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* FFM (ffserver live feed) muxer and demuxer
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* FFM (ffserver live feed) demuxer
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* Copyright (c) 2001 Fabrice Bellard.
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* Copyright (c) 2001 Fabrice Bellard.
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*
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*
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* This file is part of FFmpeg.
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* This file is part of FFmpeg.
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@ -18,277 +18,13 @@
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* License along with FFmpeg; if not, write to the Free Software
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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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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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*/
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#include "avformat.h"
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#include "avformat.h"
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#include "ffm.h"
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#include <unistd.h>
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#include <unistd.h>
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/* The FFM file is made of blocks of fixed size */
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#define FFM_HEADER_SIZE 14
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#define PACKET_ID 0x666d
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/* each packet contains frames (which can span several packets */
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#define FRAME_HEADER_SIZE 8
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#define FLAG_KEY_FRAME 0x01
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typedef struct FFMStream {
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int64_t pts;
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} FFMStream;
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enum {
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READ_HEADER,
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READ_DATA,
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};
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typedef struct FFMContext {
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/* only reading mode */
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offset_t write_index, file_size;
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int read_state;
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uint8_t header[FRAME_HEADER_SIZE];
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/* read and write */
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int first_packet; /* true if first packet, needed to set the discontinuity tag */
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int first_frame_in_packet; /* true if first frame in packet, needed to know if PTS information is valid */
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int packet_size;
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int frame_offset;
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int64_t pts;
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uint8_t *packet_ptr, *packet_end;
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uint8_t packet[FFM_PACKET_SIZE];
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} FFMContext;
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static int64_t get_pts(AVFormatContext *s, offset_t pos);
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static int64_t get_pts(AVFormatContext *s, offset_t pos);
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/* disable pts hack for testing */
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int ffm_nopts = 0;
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#ifdef CONFIG_MUXERS
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static void flush_packet(AVFormatContext *s)
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{
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FFMContext *ffm = s->priv_data;
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int fill_size, h;
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ByteIOContext *pb = s->pb;
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fill_size = ffm->packet_end - ffm->packet_ptr;
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memset(ffm->packet_ptr, 0, fill_size);
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if (url_ftell(pb) % ffm->packet_size)
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av_abort();
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/* put header */
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put_be16(pb, PACKET_ID);
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put_be16(pb, fill_size);
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put_be64(pb, ffm->pts);
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h = ffm->frame_offset;
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if (ffm->first_packet)
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h |= 0x8000;
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put_be16(pb, h);
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put_buffer(pb, ffm->packet, ffm->packet_end - ffm->packet);
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put_flush_packet(pb);
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/* prepare next packet */
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ffm->frame_offset = 0; /* no key frame */
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ffm->pts = 0; /* no pts */
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ffm->packet_ptr = ffm->packet;
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ffm->first_packet = 0;
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}
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/* 'first' is true if first data of a frame */
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static void ffm_write_data(AVFormatContext *s,
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const uint8_t *buf, int size,
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int64_t pts, int first)
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{
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FFMContext *ffm = s->priv_data;
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int len;
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if (first && ffm->frame_offset == 0)
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ffm->frame_offset = ffm->packet_ptr - ffm->packet + FFM_HEADER_SIZE;
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if (first && ffm->pts == 0)
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ffm->pts = pts;
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/* write as many packets as needed */
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while (size > 0) {
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len = ffm->packet_end - ffm->packet_ptr;
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if (len > size)
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len = size;
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memcpy(ffm->packet_ptr, buf, len);
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ffm->packet_ptr += len;
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buf += len;
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size -= len;
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if (ffm->packet_ptr >= ffm->packet_end) {
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/* special case : no pts in packet : we leave the current one */
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if (ffm->pts == 0)
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ffm->pts = pts;
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flush_packet(s);
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}
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}
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}
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static int ffm_write_header(AVFormatContext *s)
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{
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FFMContext *ffm = s->priv_data;
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AVStream *st;
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FFMStream *fst;
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ByteIOContext *pb = s->pb;
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AVCodecContext *codec;
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int bit_rate, i;
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ffm->packet_size = FFM_PACKET_SIZE;
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/* header */
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put_le32(pb, MKTAG('F', 'F', 'M', '1'));
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put_be32(pb, ffm->packet_size);
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/* XXX: store write position in other file ? */
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put_be64(pb, ffm->packet_size); /* current write position */
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put_be32(pb, s->nb_streams);
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bit_rate = 0;
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for(i=0;i<s->nb_streams;i++) {
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st = s->streams[i];
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bit_rate += st->codec->bit_rate;
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}
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put_be32(pb, bit_rate);
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/* list of streams */
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for(i=0;i<s->nb_streams;i++) {
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st = s->streams[i];
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fst = av_mallocz(sizeof(FFMStream));
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if (!fst)
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goto fail;
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av_set_pts_info(st, 64, 1, 1000000);
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st->priv_data = fst;
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codec = st->codec;
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/* generic info */
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put_be32(pb, codec->codec_id);
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put_byte(pb, codec->codec_type);
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put_be32(pb, codec->bit_rate);
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put_be32(pb, st->quality);
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put_be32(pb, codec->flags);
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put_be32(pb, codec->flags2);
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put_be32(pb, codec->debug);
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/* specific info */
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switch(codec->codec_type) {
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case CODEC_TYPE_VIDEO:
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put_be32(pb, codec->time_base.num);
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put_be32(pb, codec->time_base.den);
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put_be16(pb, codec->width);
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put_be16(pb, codec->height);
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put_be16(pb, codec->gop_size);
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put_be32(pb, codec->pix_fmt);
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put_byte(pb, codec->qmin);
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put_byte(pb, codec->qmax);
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put_byte(pb, codec->max_qdiff);
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put_be16(pb, (int) (codec->qcompress * 10000.0));
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put_be16(pb, (int) (codec->qblur * 10000.0));
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put_be32(pb, codec->bit_rate_tolerance);
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put_strz(pb, codec->rc_eq);
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put_be32(pb, codec->rc_max_rate);
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put_be32(pb, codec->rc_min_rate);
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put_be32(pb, codec->rc_buffer_size);
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put_be64(pb, av_dbl2int(codec->i_quant_factor));
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put_be64(pb, av_dbl2int(codec->b_quant_factor));
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put_be64(pb, av_dbl2int(codec->i_quant_offset));
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put_be64(pb, av_dbl2int(codec->b_quant_offset));
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put_be32(pb, codec->dct_algo);
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put_be32(pb, codec->strict_std_compliance);
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put_be32(pb, codec->max_b_frames);
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put_be32(pb, codec->luma_elim_threshold);
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put_be32(pb, codec->chroma_elim_threshold);
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put_be32(pb, codec->mpeg_quant);
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put_be32(pb, codec->intra_dc_precision);
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put_be32(pb, codec->me_method);
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put_be32(pb, codec->mb_decision);
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put_be32(pb, codec->nsse_weight);
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put_be32(pb, codec->frame_skip_cmp);
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put_be64(pb, av_dbl2int(codec->rc_buffer_aggressivity));
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put_be32(pb, codec->codec_tag);
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break;
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case CODEC_TYPE_AUDIO:
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put_be32(pb, codec->sample_rate);
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put_le16(pb, codec->channels);
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put_le16(pb, codec->frame_size);
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break;
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default:
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return -1;
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}
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/* hack to have real time */
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if (ffm_nopts)
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fst->pts = 0;
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else
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fst->pts = av_gettime();
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}
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/* flush until end of block reached */
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while ((url_ftell(pb) % ffm->packet_size) != 0)
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put_byte(pb, 0);
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put_flush_packet(pb);
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/* init packet mux */
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ffm->packet_ptr = ffm->packet;
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ffm->packet_end = ffm->packet + ffm->packet_size - FFM_HEADER_SIZE;
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assert(ffm->packet_end >= ffm->packet);
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ffm->frame_offset = 0;
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ffm->pts = 0;
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ffm->first_packet = 1;
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return 0;
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fail:
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for(i=0;i<s->nb_streams;i++) {
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st = s->streams[i];
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av_freep(&st->priv_data);
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}
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return -1;
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}
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static int ffm_write_packet(AVFormatContext *s, AVPacket *pkt)
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{
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AVStream *st = s->streams[pkt->stream_index];
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FFMStream *fst = st->priv_data;
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int64_t pts;
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uint8_t header[FRAME_HEADER_SIZE];
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pts = fst->pts;
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/* packet size & key_frame */
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header[0] = pkt->stream_index;
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header[1] = 0;
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if (pkt->flags & PKT_FLAG_KEY)
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header[1] |= FLAG_KEY_FRAME;
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AV_WB24(header+2, pkt->size);
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AV_WB24(header+5, pkt->duration);
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ffm_write_data(s, header, FRAME_HEADER_SIZE, pts, 1);
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ffm_write_data(s, pkt->data, pkt->size, pts, 0);
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fst->pts += pkt->duration;
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return 0;
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}
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static int ffm_write_trailer(AVFormatContext *s)
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{
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ByteIOContext *pb = s->pb;
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FFMContext *ffm = s->priv_data;
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/* flush packets */
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if (ffm->packet_ptr > ffm->packet)
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flush_packet(s);
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put_flush_packet(pb);
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if (!url_is_streamed(pb)) {
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int64_t size;
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/* update the write offset */
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size = url_ftell(pb);
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url_fseek(pb, 8, SEEK_SET);
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put_be64(pb, size);
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put_flush_packet(pb);
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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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/* ffm demux */
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static int ffm_is_avail_data(AVFormatContext *s, int size)
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static int ffm_is_avail_data(AVFormatContext *s, int size)
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{
|
{
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FFMContext *ffm = s->priv_data;
|
FFMContext *ffm = s->priv_data;
|
||||||
@ -750,7 +486,6 @@ static int ffm_probe(AVProbeData *p)
|
|||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
||||||
#ifdef CONFIG_FFM_DEMUXER
|
|
||||||
AVInputFormat ffm_demuxer = {
|
AVInputFormat ffm_demuxer = {
|
||||||
"ffm",
|
"ffm",
|
||||||
"ffm format",
|
"ffm format",
|
||||||
@ -761,19 +496,3 @@ AVInputFormat ffm_demuxer = {
|
|||||||
ffm_read_close,
|
ffm_read_close,
|
||||||
ffm_seek,
|
ffm_seek,
|
||||||
};
|
};
|
||||||
#endif
|
|
||||||
#ifdef CONFIG_FFM_MUXER
|
|
||||||
AVOutputFormat ffm_muxer = {
|
|
||||||
"ffm",
|
|
||||||
"ffm format",
|
|
||||||
"",
|
|
||||||
"ffm",
|
|
||||||
sizeof(FFMContext),
|
|
||||||
/* not really used */
|
|
||||||
CODEC_ID_MP2,
|
|
||||||
CODEC_ID_MPEG1VIDEO,
|
|
||||||
ffm_write_header,
|
|
||||||
ffm_write_packet,
|
|
||||||
ffm_write_trailer,
|
|
||||||
};
|
|
||||||
#endif //CONFIG_FFM_MUXER
|
|
||||||
267
libavformat/ffmenc.c
Normal file
267
libavformat/ffmenc.c
Normal file
@ -0,0 +1,267 @@
|
|||||||
|
/*
|
||||||
|
* FFM (ffserver live feed) muxer
|
||||||
|
* Copyright (c) 2001 Fabrice Bellard.
|
||||||
|
*
|
||||||
|
* 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 "avformat.h"
|
||||||
|
#include "ffm.h"
|
||||||
|
#include <unistd.h>
|
||||||
|
|
||||||
|
/* disable pts hack for testing */
|
||||||
|
int ffm_nopts = 0;
|
||||||
|
|
||||||
|
static void flush_packet(AVFormatContext *s)
|
||||||
|
{
|
||||||
|
FFMContext *ffm = s->priv_data;
|
||||||
|
int fill_size, h;
|
||||||
|
ByteIOContext *pb = s->pb;
|
||||||
|
|
||||||
|
fill_size = ffm->packet_end - ffm->packet_ptr;
|
||||||
|
memset(ffm->packet_ptr, 0, fill_size);
|
||||||
|
|
||||||
|
if (url_ftell(pb) % ffm->packet_size)
|
||||||
|
av_abort();
|
||||||
|
|
||||||
|
/* put header */
|
||||||
|
put_be16(pb, PACKET_ID);
|
||||||
|
put_be16(pb, fill_size);
|
||||||
|
put_be64(pb, ffm->pts);
|
||||||
|
h = ffm->frame_offset;
|
||||||
|
if (ffm->first_packet)
|
||||||
|
h |= 0x8000;
|
||||||
|
put_be16(pb, h);
|
||||||
|
put_buffer(pb, ffm->packet, ffm->packet_end - ffm->packet);
|
||||||
|
put_flush_packet(pb);
|
||||||
|
|
||||||
|
/* prepare next packet */
|
||||||
|
ffm->frame_offset = 0; /* no key frame */
|
||||||
|
ffm->pts = 0; /* no pts */
|
||||||
|
ffm->packet_ptr = ffm->packet;
|
||||||
|
ffm->first_packet = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* 'first' is true if first data of a frame */
|
||||||
|
static void ffm_write_data(AVFormatContext *s,
|
||||||
|
const uint8_t *buf, int size,
|
||||||
|
int64_t pts, int first)
|
||||||
|
{
|
||||||
|
FFMContext *ffm = s->priv_data;
|
||||||
|
int len;
|
||||||
|
|
||||||
|
if (first && ffm->frame_offset == 0)
|
||||||
|
ffm->frame_offset = ffm->packet_ptr - ffm->packet + FFM_HEADER_SIZE;
|
||||||
|
if (first && ffm->pts == 0)
|
||||||
|
ffm->pts = pts;
|
||||||
|
|
||||||
|
/* write as many packets as needed */
|
||||||
|
while (size > 0) {
|
||||||
|
len = ffm->packet_end - ffm->packet_ptr;
|
||||||
|
if (len > size)
|
||||||
|
len = size;
|
||||||
|
memcpy(ffm->packet_ptr, buf, len);
|
||||||
|
|
||||||
|
ffm->packet_ptr += len;
|
||||||
|
buf += len;
|
||||||
|
size -= len;
|
||||||
|
if (ffm->packet_ptr >= ffm->packet_end) {
|
||||||
|
/* special case : no pts in packet : we leave the current one */
|
||||||
|
if (ffm->pts == 0)
|
||||||
|
ffm->pts = pts;
|
||||||
|
|
||||||
|
flush_packet(s);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static int ffm_write_header(AVFormatContext *s)
|
||||||
|
{
|
||||||
|
FFMContext *ffm = s->priv_data;
|
||||||
|
AVStream *st;
|
||||||
|
FFMStream *fst;
|
||||||
|
ByteIOContext *pb = s->pb;
|
||||||
|
AVCodecContext *codec;
|
||||||
|
int bit_rate, i;
|
||||||
|
|
||||||
|
ffm->packet_size = FFM_PACKET_SIZE;
|
||||||
|
|
||||||
|
/* header */
|
||||||
|
put_le32(pb, MKTAG('F', 'F', 'M', '1'));
|
||||||
|
put_be32(pb, ffm->packet_size);
|
||||||
|
/* XXX: store write position in other file ? */
|
||||||
|
put_be64(pb, ffm->packet_size); /* current write position */
|
||||||
|
|
||||||
|
put_be32(pb, s->nb_streams);
|
||||||
|
bit_rate = 0;
|
||||||
|
for(i=0;i<s->nb_streams;i++) {
|
||||||
|
st = s->streams[i];
|
||||||
|
bit_rate += st->codec->bit_rate;
|
||||||
|
}
|
||||||
|
put_be32(pb, bit_rate);
|
||||||
|
|
||||||
|
/* list of streams */
|
||||||
|
for(i=0;i<s->nb_streams;i++) {
|
||||||
|
st = s->streams[i];
|
||||||
|
fst = av_mallocz(sizeof(FFMStream));
|
||||||
|
if (!fst)
|
||||||
|
goto fail;
|
||||||
|
av_set_pts_info(st, 64, 1, 1000000);
|
||||||
|
st->priv_data = fst;
|
||||||
|
|
||||||
|
codec = st->codec;
|
||||||
|
/* generic info */
|
||||||
|
put_be32(pb, codec->codec_id);
|
||||||
|
put_byte(pb, codec->codec_type);
|
||||||
|
put_be32(pb, codec->bit_rate);
|
||||||
|
put_be32(pb, st->quality);
|
||||||
|
put_be32(pb, codec->flags);
|
||||||
|
put_be32(pb, codec->flags2);
|
||||||
|
put_be32(pb, codec->debug);
|
||||||
|
/* specific info */
|
||||||
|
switch(codec->codec_type) {
|
||||||
|
case CODEC_TYPE_VIDEO:
|
||||||
|
put_be32(pb, codec->time_base.num);
|
||||||
|
put_be32(pb, codec->time_base.den);
|
||||||
|
put_be16(pb, codec->width);
|
||||||
|
put_be16(pb, codec->height);
|
||||||
|
put_be16(pb, codec->gop_size);
|
||||||
|
put_be32(pb, codec->pix_fmt);
|
||||||
|
put_byte(pb, codec->qmin);
|
||||||
|
put_byte(pb, codec->qmax);
|
||||||
|
put_byte(pb, codec->max_qdiff);
|
||||||
|
put_be16(pb, (int) (codec->qcompress * 10000.0));
|
||||||
|
put_be16(pb, (int) (codec->qblur * 10000.0));
|
||||||
|
put_be32(pb, codec->bit_rate_tolerance);
|
||||||
|
put_strz(pb, codec->rc_eq);
|
||||||
|
put_be32(pb, codec->rc_max_rate);
|
||||||
|
put_be32(pb, codec->rc_min_rate);
|
||||||
|
put_be32(pb, codec->rc_buffer_size);
|
||||||
|
put_be64(pb, av_dbl2int(codec->i_quant_factor));
|
||||||
|
put_be64(pb, av_dbl2int(codec->b_quant_factor));
|
||||||
|
put_be64(pb, av_dbl2int(codec->i_quant_offset));
|
||||||
|
put_be64(pb, av_dbl2int(codec->b_quant_offset));
|
||||||
|
put_be32(pb, codec->dct_algo);
|
||||||
|
put_be32(pb, codec->strict_std_compliance);
|
||||||
|
put_be32(pb, codec->max_b_frames);
|
||||||
|
put_be32(pb, codec->luma_elim_threshold);
|
||||||
|
put_be32(pb, codec->chroma_elim_threshold);
|
||||||
|
put_be32(pb, codec->mpeg_quant);
|
||||||
|
put_be32(pb, codec->intra_dc_precision);
|
||||||
|
put_be32(pb, codec->me_method);
|
||||||
|
put_be32(pb, codec->mb_decision);
|
||||||
|
put_be32(pb, codec->nsse_weight);
|
||||||
|
put_be32(pb, codec->frame_skip_cmp);
|
||||||
|
put_be64(pb, av_dbl2int(codec->rc_buffer_aggressivity));
|
||||||
|
put_be32(pb, codec->codec_tag);
|
||||||
|
break;
|
||||||
|
case CODEC_TYPE_AUDIO:
|
||||||
|
put_be32(pb, codec->sample_rate);
|
||||||
|
put_le16(pb, codec->channels);
|
||||||
|
put_le16(pb, codec->frame_size);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
/* hack to have real time */
|
||||||
|
if (ffm_nopts)
|
||||||
|
fst->pts = 0;
|
||||||
|
else
|
||||||
|
fst->pts = av_gettime();
|
||||||
|
}
|
||||||
|
|
||||||
|
/* flush until end of block reached */
|
||||||
|
while ((url_ftell(pb) % ffm->packet_size) != 0)
|
||||||
|
put_byte(pb, 0);
|
||||||
|
|
||||||
|
put_flush_packet(pb);
|
||||||
|
|
||||||
|
/* init packet mux */
|
||||||
|
ffm->packet_ptr = ffm->packet;
|
||||||
|
ffm->packet_end = ffm->packet + ffm->packet_size - FFM_HEADER_SIZE;
|
||||||
|
assert(ffm->packet_end >= ffm->packet);
|
||||||
|
ffm->frame_offset = 0;
|
||||||
|
ffm->pts = 0;
|
||||||
|
ffm->first_packet = 1;
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
fail:
|
||||||
|
for(i=0;i<s->nb_streams;i++) {
|
||||||
|
st = s->streams[i];
|
||||||
|
av_freep(&st->priv_data);
|
||||||
|
}
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int ffm_write_packet(AVFormatContext *s, AVPacket *pkt)
|
||||||
|
{
|
||||||
|
AVStream *st = s->streams[pkt->stream_index];
|
||||||
|
FFMStream *fst = st->priv_data;
|
||||||
|
int64_t pts;
|
||||||
|
uint8_t header[FRAME_HEADER_SIZE];
|
||||||
|
|
||||||
|
pts = fst->pts;
|
||||||
|
/* packet size & key_frame */
|
||||||
|
header[0] = pkt->stream_index;
|
||||||
|
header[1] = 0;
|
||||||
|
if (pkt->flags & PKT_FLAG_KEY)
|
||||||
|
header[1] |= FLAG_KEY_FRAME;
|
||||||
|
AV_WB24(header+2, pkt->size);
|
||||||
|
AV_WB24(header+5, pkt->duration);
|
||||||
|
ffm_write_data(s, header, FRAME_HEADER_SIZE, pts, 1);
|
||||||
|
ffm_write_data(s, pkt->data, pkt->size, pts, 0);
|
||||||
|
|
||||||
|
fst->pts += pkt->duration;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static int ffm_write_trailer(AVFormatContext *s)
|
||||||
|
{
|
||||||
|
ByteIOContext *pb = s->pb;
|
||||||
|
FFMContext *ffm = s->priv_data;
|
||||||
|
|
||||||
|
/* flush packets */
|
||||||
|
if (ffm->packet_ptr > ffm->packet)
|
||||||
|
flush_packet(s);
|
||||||
|
|
||||||
|
put_flush_packet(pb);
|
||||||
|
|
||||||
|
if (!url_is_streamed(pb)) {
|
||||||
|
int64_t size;
|
||||||
|
/* update the write offset */
|
||||||
|
size = url_ftell(pb);
|
||||||
|
url_fseek(pb, 8, SEEK_SET);
|
||||||
|
put_be64(pb, size);
|
||||||
|
put_flush_packet(pb);
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
AVOutputFormat ffm_muxer = {
|
||||||
|
"ffm",
|
||||||
|
"ffm format",
|
||||||
|
"",
|
||||||
|
"ffm",
|
||||||
|
sizeof(FFMContext),
|
||||||
|
/* not really used */
|
||||||
|
CODEC_ID_MP2,
|
||||||
|
CODEC_ID_MPEG1VIDEO,
|
||||||
|
ffm_write_header,
|
||||||
|
ffm_write_packet,
|
||||||
|
ffm_write_trailer,
|
||||||
|
};
|
||||||
Loading…
Reference in New Issue
Block a user