mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2025-02-18 12:56:56 +00:00
split swf de/muxer
Originally committed as revision 13203 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
parent
585dac65db
commit
3b35f4ab51
@ -30,7 +30,7 @@ OBJS-$(CONFIG_AU_MUXER) += au.o
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OBJS-$(CONFIG_AVI_DEMUXER) += avidec.o riff.o
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OBJS-$(CONFIG_AVI_MUXER) += avienc.o riff.o
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OBJS-$(CONFIG_AVISYNTH) += avisynth.o
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OBJS-$(CONFIG_AVM2_MUXER) += swf.o
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OBJS-$(CONFIG_AVM2_MUXER) += swfenc.o
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OBJS-$(CONFIG_AVS_DEMUXER) += avs.o vocdec.o voc.o
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OBJS-$(CONFIG_BETHSOFTVID_DEMUXER) += bethsoftvid.o
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OBJS-$(CONFIG_BFI_DEMUXER) += bfi.o
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@ -161,8 +161,8 @@ OBJS-$(CONFIG_SIFF_DEMUXER) += siff.o
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OBJS-$(CONFIG_SMACKER_DEMUXER) += smacker.o
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OBJS-$(CONFIG_SOL_DEMUXER) += sol.o raw.o
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OBJS-$(CONFIG_STR_DEMUXER) += psxstr.o
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OBJS-$(CONFIG_SWF_DEMUXER) += swf.o
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OBJS-$(CONFIG_SWF_MUXER) += swf.o
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OBJS-$(CONFIG_SWF_DEMUXER) += swfdec.o
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OBJS-$(CONFIG_SWF_MUXER) += swfenc.o
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OBJS-$(CONFIG_TG2_MUXER) += movenc.o riff.o isom.o avc.o
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OBJS-$(CONFIG_TGP_MUXER) += movenc.o riff.o isom.o avc.o
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OBJS-$(CONFIG_THP_DEMUXER) += thp.o
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99
libavformat/swf.h
Normal file
99
libavformat/swf.h
Normal file
@ -0,0 +1,99 @@
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/*
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* Flash Compatible Streaming Format common header.
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* Copyright (c) 2000 Fabrice Bellard.
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* Copyright (c) 2003 Tinic Uro.
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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_SWF_H
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#define FFMPEG_SWF_H
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#include "avformat.h"
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#include "riff.h" /* for CodecTag */
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/* should have a generic way to indicate probable size */
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#define DUMMY_FILE_SIZE (100 * 1024 * 1024)
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#define DUMMY_DURATION 600 /* in seconds */
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#define TAG_END 0
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#define TAG_SHOWFRAME 1
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#define TAG_DEFINESHAPE 2
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#define TAG_FREECHARACTER 3
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#define TAG_PLACEOBJECT 4
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#define TAG_REMOVEOBJECT 5
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#define TAG_STREAMHEAD 18
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#define TAG_STREAMBLOCK 19
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#define TAG_JPEG2 21
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#define TAG_PLACEOBJECT2 26
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#define TAG_STREAMHEAD2 45
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#define TAG_VIDEOSTREAM 60
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#define TAG_VIDEOFRAME 61
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#define TAG_FILEATTRIBUTES 69
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#define TAG_LONG 0x100
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/* flags for shape definition */
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#define FLAG_MOVETO 0x01
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#define FLAG_SETFILL0 0x02
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#define FLAG_SETFILL1 0x04
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#define AUDIO_FIFO_SIZE 65536
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/* character id used */
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#define BITMAP_ID 0
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#define VIDEO_ID 0
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#define SHAPE_ID 1
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#undef NDEBUG
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#include <assert.h>
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typedef struct {
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int audio_stream_index;
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offset_t duration_pos;
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offset_t tag_pos;
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int samples_per_frame;
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int sound_samples;
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int swf_frame_number;
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int video_frame_number;
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int frame_rate;
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int tag;
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uint8_t audio_fifo[AUDIO_FIFO_SIZE];
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int audio_in_pos;
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int video_type;
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int audio_type;
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} SWFContext;
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static const AVCodecTag swf_codec_tags[] = {
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{CODEC_ID_FLV1, 0x02},
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{CODEC_ID_VP6F, 0x04},
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{0, 0},
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};
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static const AVCodecTag swf_audio_codec_tags[] = {
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{CODEC_ID_PCM_S16LE, 0x00},
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{CODEC_ID_ADPCM_SWF, 0x01},
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{CODEC_ID_MP3, 0x02},
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{CODEC_ID_PCM_S16LE, 0x03},
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//{CODEC_ID_NELLYMOSER, 0x06},
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{0, 0},
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};
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#endif /* FFMPEG_SWF_H */
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206
libavformat/swfdec.c
Normal file
206
libavformat/swfdec.c
Normal file
@ -0,0 +1,206 @@
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/*
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* Flash Compatible Streaming Format
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* Copyright (c) 2000 Fabrice Bellard.
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* Copyright (c) 2003 Tinic Uro.
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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 "swf.h"
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/*********************************************/
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/* Extract FLV encoded frame and MP3 from swf
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Note that the detection of the real frame
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is inaccurate at this point as it can be
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quite tricky to determine, you almost certainly
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will get a bad audio/video sync */
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static int get_swf_tag(ByteIOContext *pb, int *len_ptr)
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{
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int tag, len;
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if (url_feof(pb))
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return -1;
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tag = get_le16(pb);
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len = tag & 0x3f;
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tag = tag >> 6;
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if (len == 0x3f) {
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len = get_le32(pb);
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}
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// av_log(NULL, AV_LOG_DEBUG, "Tag: %d - Len: %d\n", tag, len);
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*len_ptr = len;
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return tag;
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}
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static int swf_probe(AVProbeData *p)
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{
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/* check file header */
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if ((p->buf[0] == 'F' || p->buf[0] == 'C') && p->buf[1] == 'W' &&
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p->buf[2] == 'S')
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return AVPROBE_SCORE_MAX;
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else
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return 0;
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}
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static int swf_read_header(AVFormatContext *s, AVFormatParameters *ap)
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{
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SWFContext *swf = s->priv_data;
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ByteIOContext *pb = s->pb;
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int nbits, len, tag;
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tag = get_be32(pb) & 0xffffff00;
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if (tag == MKBETAG('C', 'W', 'S', 0)) {
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av_log(s, AV_LOG_ERROR, "Compressed SWF format not supported\n");
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return AVERROR(EIO);
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}
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if (tag != MKBETAG('F', 'W', 'S', 0))
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return AVERROR(EIO);
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get_le32(pb);
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/* skip rectangle size */
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nbits = get_byte(pb) >> 3;
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len = (4 * nbits - 3 + 7) / 8;
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url_fskip(pb, len);
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swf->frame_rate = get_le16(pb); /* 8.8 fixed */
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get_le16(pb); /* frame count */
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swf->samples_per_frame = 0;
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s->ctx_flags |= AVFMTCTX_NOHEADER;
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return 0;
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}
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static int swf_read_packet(AVFormatContext *s, AVPacket *pkt)
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{
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SWFContext *swf = s->priv_data;
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ByteIOContext *pb = s->pb;
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AVStream *vst = NULL, *ast = NULL, *st = 0;
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int tag, len, i, frame, v;
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for(;;) {
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tag = get_swf_tag(pb, &len);
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if (tag < 0)
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return AVERROR(EIO);
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if (tag == TAG_VIDEOSTREAM && !vst) {
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int ch_id = get_le16(pb);
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get_le16(pb);
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get_le16(pb);
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get_le16(pb);
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get_byte(pb);
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/* Check for FLV1 */
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vst = av_new_stream(s, ch_id);
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if (!vst)
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return -1;
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vst->codec->codec_type = CODEC_TYPE_VIDEO;
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vst->codec->codec_id = codec_get_id(swf_codec_tags, get_byte(pb));
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av_set_pts_info(vst, 64, 256, swf->frame_rate);
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vst->codec->time_base = (AVRational){ 256, swf->frame_rate };
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len -= 10;
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} else if ((tag == TAG_STREAMHEAD || tag == TAG_STREAMHEAD2) && !ast) {
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/* streaming found */
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int sample_rate_code;
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get_byte(pb);
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v = get_byte(pb);
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swf->samples_per_frame = get_le16(pb);
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ast = av_new_stream(s, -1); /* -1 to avoid clash with video stream ch_id */
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if (!ast)
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return -1;
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swf->audio_stream_index = ast->index;
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ast->codec->channels = 1 + (v&1);
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ast->codec->codec_type = CODEC_TYPE_AUDIO;
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ast->codec->codec_id = codec_get_id(swf_audio_codec_tags, (v>>4) & 15);
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ast->need_parsing = AVSTREAM_PARSE_FULL;
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sample_rate_code= (v>>2) & 3;
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if (!sample_rate_code)
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return AVERROR(EIO);
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ast->codec->sample_rate = 11025 << (sample_rate_code-1);
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av_set_pts_info(ast, 64, 1, ast->codec->sample_rate);
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len -= 4;
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} else if (tag == TAG_VIDEOFRAME) {
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int ch_id = get_le16(pb);
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len -= 2;
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for(i=0; i<s->nb_streams; i++) {
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st = s->streams[i];
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if (st->codec->codec_type == CODEC_TYPE_VIDEO && st->id == ch_id) {
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frame = get_le16(pb);
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av_get_packet(pb, pkt, len-2);
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pkt->pts = frame;
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pkt->stream_index = st->index;
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return pkt->size;
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}
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}
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} else if (tag == TAG_STREAMBLOCK) {
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st = s->streams[swf->audio_stream_index];
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if (st->codec->codec_id == CODEC_ID_MP3) {
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url_fskip(pb, 4);
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av_get_packet(pb, pkt, len-4);
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} else { // ADPCM, PCM
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av_get_packet(pb, pkt, len);
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}
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pkt->stream_index = st->index;
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return pkt->size;
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} else if (tag == TAG_JPEG2) {
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for (i=0; i<s->nb_streams; i++) {
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st = s->streams[i];
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if (st->id == -2)
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break;
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}
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if (i == s->nb_streams) {
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vst = av_new_stream(s, -2); /* -2 to avoid clash with video stream and audio stream */
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if (!vst)
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return -1;
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vst->codec->codec_type = CODEC_TYPE_VIDEO;
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vst->codec->codec_id = CODEC_ID_MJPEG;
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av_set_pts_info(vst, 64, 256, swf->frame_rate);
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vst->codec->time_base = (AVRational){ 256, swf->frame_rate };
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st = vst;
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}
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get_le16(pb); /* BITMAP_ID */
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av_new_packet(pkt, len-2);
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get_buffer(pb, pkt->data, 4);
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if (AV_RB32(pkt->data) == 0xffd8ffd9 ||
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AV_RB32(pkt->data) == 0xffd9ffd8) {
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/* old SWF files containing SOI/EOI as data start */
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/* files created by swink have reversed tag */
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pkt->size -= 4;
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get_buffer(pb, pkt->data, pkt->size);
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} else {
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get_buffer(pb, pkt->data + 4, pkt->size - 4);
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}
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pkt->stream_index = st->index;
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return pkt->size;
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}
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url_fskip(pb, len);
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}
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return 0;
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}
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static int swf_read_close(AVFormatContext *s)
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{
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return 0;
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}
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AVInputFormat swf_demuxer = {
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"swf",
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"Flash format",
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sizeof(SWFContext),
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swf_probe,
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swf_read_header,
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swf_read_packet,
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swf_read_close,
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};
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@ -1,5 +1,5 @@
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/*
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* Flash Compatible Streaming Format
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* Flash Compatible Streaming Format muxer.
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* Copyright (c) 2000 Fabrice Bellard.
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* Copyright (c) 2003 Tinic Uro.
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*
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@ -22,79 +22,8 @@
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#include "libavcodec/bitstream.h"
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#include "avformat.h"
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#include "riff.h" /* for CodecTag */
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#include "swf.h"
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/* should have a generic way to indicate probable size */
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#define DUMMY_FILE_SIZE (100 * 1024 * 1024)
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#define DUMMY_DURATION 600 /* in seconds */
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#define TAG_END 0
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#define TAG_SHOWFRAME 1
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#define TAG_DEFINESHAPE 2
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#define TAG_FREECHARACTER 3
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#define TAG_PLACEOBJECT 4
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#define TAG_REMOVEOBJECT 5
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#define TAG_STREAMHEAD 18
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#define TAG_STREAMBLOCK 19
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#define TAG_JPEG2 21
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#define TAG_PLACEOBJECT2 26
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#define TAG_STREAMHEAD2 45
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#define TAG_VIDEOSTREAM 60
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#define TAG_VIDEOFRAME 61
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#define TAG_FILEATTRIBUTES 69
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#define TAG_LONG 0x100
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/* flags for shape definition */
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#define FLAG_MOVETO 0x01
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#define FLAG_SETFILL0 0x02
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#define FLAG_SETFILL1 0x04
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#define AUDIO_FIFO_SIZE 65536
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/* character id used */
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#define BITMAP_ID 0
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#define VIDEO_ID 0
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#define SHAPE_ID 1
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#undef NDEBUG
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#include <assert.h>
|
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|
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typedef struct {
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int audio_stream_index;
|
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offset_t duration_pos;
|
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offset_t tag_pos;
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int samples_per_frame;
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int sound_samples;
|
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int swf_frame_number;
|
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int video_frame_number;
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int frame_rate;
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int tag;
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uint8_t audio_fifo[AUDIO_FIFO_SIZE];
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int audio_in_pos;
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int video_type;
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int audio_type;
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} SWFContext;
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static const AVCodecTag swf_codec_tags[] = {
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{CODEC_ID_FLV1, 0x02},
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{CODEC_ID_VP6F, 0x04},
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{0, 0},
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};
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static const AVCodecTag swf_audio_codec_tags[] = {
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{CODEC_ID_PCM_S16LE, 0x00},
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{CODEC_ID_ADPCM_SWF, 0x01},
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{CODEC_ID_MP3, 0x02},
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{CODEC_ID_PCM_S16LE, 0x03},
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//{CODEC_ID_NELLYMOSER, 0x06},
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{0, 0},
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};
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#ifdef CONFIG_MUXERS
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static void put_swf_tag(AVFormatContext *s, int tag)
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{
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SWFContext *swf = s->priv_data;
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@ -601,192 +530,7 @@ static int swf_write_trailer(AVFormatContext *s)
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}
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return 0;
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}
|
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#endif //CONFIG_MUXERS
|
||||
|
||||
/*********************************************/
|
||||
/* Extract FLV encoded frame and MP3 from swf
|
||||
Note that the detection of the real frame
|
||||
is inaccurate at this point as it can be
|
||||
quite tricky to determine, you almost certainly
|
||||
will get a bad audio/video sync */
|
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|
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static int get_swf_tag(ByteIOContext *pb, int *len_ptr)
|
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{
|
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int tag, len;
|
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|
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if (url_feof(pb))
|
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return -1;
|
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|
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tag = get_le16(pb);
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len = tag & 0x3f;
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tag = tag >> 6;
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if (len == 0x3f) {
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len = get_le32(pb);
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}
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// av_log(NULL, AV_LOG_DEBUG, "Tag: %d - Len: %d\n", tag, len);
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*len_ptr = len;
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return tag;
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}
|
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static int swf_probe(AVProbeData *p)
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{
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/* check file header */
|
||||
if ((p->buf[0] == 'F' || p->buf[0] == 'C') && p->buf[1] == 'W' &&
|
||||
p->buf[2] == 'S')
|
||||
return AVPROBE_SCORE_MAX;
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int swf_read_header(AVFormatContext *s, AVFormatParameters *ap)
|
||||
{
|
||||
SWFContext *swf = s->priv_data;
|
||||
ByteIOContext *pb = s->pb;
|
||||
int nbits, len, tag;
|
||||
|
||||
tag = get_be32(pb) & 0xffffff00;
|
||||
|
||||
if (tag == MKBETAG('C', 'W', 'S', 0)) {
|
||||
av_log(s, AV_LOG_ERROR, "Compressed SWF format not supported\n");
|
||||
return AVERROR(EIO);
|
||||
}
|
||||
if (tag != MKBETAG('F', 'W', 'S', 0))
|
||||
return AVERROR(EIO);
|
||||
get_le32(pb);
|
||||
/* skip rectangle size */
|
||||
nbits = get_byte(pb) >> 3;
|
||||
len = (4 * nbits - 3 + 7) / 8;
|
||||
url_fskip(pb, len);
|
||||
swf->frame_rate = get_le16(pb); /* 8.8 fixed */
|
||||
get_le16(pb); /* frame count */
|
||||
|
||||
swf->samples_per_frame = 0;
|
||||
s->ctx_flags |= AVFMTCTX_NOHEADER;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int swf_read_packet(AVFormatContext *s, AVPacket *pkt)
|
||||
{
|
||||
SWFContext *swf = s->priv_data;
|
||||
ByteIOContext *pb = s->pb;
|
||||
AVStream *vst = NULL, *ast = NULL, *st = 0;
|
||||
int tag, len, i, frame, v;
|
||||
|
||||
for(;;) {
|
||||
tag = get_swf_tag(pb, &len);
|
||||
if (tag < 0)
|
||||
return AVERROR(EIO);
|
||||
if (tag == TAG_VIDEOSTREAM && !vst) {
|
||||
int ch_id = get_le16(pb);
|
||||
get_le16(pb);
|
||||
get_le16(pb);
|
||||
get_le16(pb);
|
||||
get_byte(pb);
|
||||
/* Check for FLV1 */
|
||||
vst = av_new_stream(s, ch_id);
|
||||
if (!vst)
|
||||
return -1;
|
||||
vst->codec->codec_type = CODEC_TYPE_VIDEO;
|
||||
vst->codec->codec_id = codec_get_id(swf_codec_tags, get_byte(pb));
|
||||
av_set_pts_info(vst, 64, 256, swf->frame_rate);
|
||||
vst->codec->time_base = (AVRational){ 256, swf->frame_rate };
|
||||
len -= 10;
|
||||
} else if ((tag == TAG_STREAMHEAD || tag == TAG_STREAMHEAD2) && !ast) {
|
||||
/* streaming found */
|
||||
int sample_rate_code;
|
||||
get_byte(pb);
|
||||
v = get_byte(pb);
|
||||
swf->samples_per_frame = get_le16(pb);
|
||||
ast = av_new_stream(s, -1); /* -1 to avoid clash with video stream ch_id */
|
||||
if (!ast)
|
||||
return -1;
|
||||
swf->audio_stream_index = ast->index;
|
||||
ast->codec->channels = 1 + (v&1);
|
||||
ast->codec->codec_type = CODEC_TYPE_AUDIO;
|
||||
ast->codec->codec_id = codec_get_id(swf_audio_codec_tags, (v>>4) & 15);
|
||||
ast->need_parsing = AVSTREAM_PARSE_FULL;
|
||||
sample_rate_code= (v>>2) & 3;
|
||||
if (!sample_rate_code)
|
||||
return AVERROR(EIO);
|
||||
ast->codec->sample_rate = 11025 << (sample_rate_code-1);
|
||||
av_set_pts_info(ast, 64, 1, ast->codec->sample_rate);
|
||||
len -= 4;
|
||||
} else if (tag == TAG_VIDEOFRAME) {
|
||||
int ch_id = get_le16(pb);
|
||||
len -= 2;
|
||||
for(i=0; i<s->nb_streams; i++) {
|
||||
st = s->streams[i];
|
||||
if (st->codec->codec_type == CODEC_TYPE_VIDEO && st->id == ch_id) {
|
||||
frame = get_le16(pb);
|
||||
av_get_packet(pb, pkt, len-2);
|
||||
pkt->pts = frame;
|
||||
pkt->stream_index = st->index;
|
||||
return pkt->size;
|
||||
}
|
||||
}
|
||||
} else if (tag == TAG_STREAMBLOCK) {
|
||||
st = s->streams[swf->audio_stream_index];
|
||||
if (st->codec->codec_id == CODEC_ID_MP3) {
|
||||
url_fskip(pb, 4);
|
||||
av_get_packet(pb, pkt, len-4);
|
||||
} else { // ADPCM, PCM
|
||||
av_get_packet(pb, pkt, len);
|
||||
}
|
||||
pkt->stream_index = st->index;
|
||||
return pkt->size;
|
||||
} else if (tag == TAG_JPEG2) {
|
||||
for (i=0; i<s->nb_streams; i++) {
|
||||
st = s->streams[i];
|
||||
if (st->id == -2)
|
||||
break;
|
||||
}
|
||||
if (i == s->nb_streams) {
|
||||
vst = av_new_stream(s, -2); /* -2 to avoid clash with video stream and audio stream */
|
||||
if (!vst)
|
||||
return -1;
|
||||
vst->codec->codec_type = CODEC_TYPE_VIDEO;
|
||||
vst->codec->codec_id = CODEC_ID_MJPEG;
|
||||
av_set_pts_info(vst, 64, 256, swf->frame_rate);
|
||||
vst->codec->time_base = (AVRational){ 256, swf->frame_rate };
|
||||
st = vst;
|
||||
}
|
||||
get_le16(pb); /* BITMAP_ID */
|
||||
av_new_packet(pkt, len-2);
|
||||
get_buffer(pb, pkt->data, 4);
|
||||
if (AV_RB32(pkt->data) == 0xffd8ffd9 ||
|
||||
AV_RB32(pkt->data) == 0xffd9ffd8) {
|
||||
/* old SWF files containing SOI/EOI as data start */
|
||||
/* files created by swink have reversed tag */
|
||||
pkt->size -= 4;
|
||||
get_buffer(pb, pkt->data, pkt->size);
|
||||
} else {
|
||||
get_buffer(pb, pkt->data + 4, pkt->size - 4);
|
||||
}
|
||||
pkt->stream_index = st->index;
|
||||
return pkt->size;
|
||||
}
|
||||
url_fskip(pb, len);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int swf_read_close(AVFormatContext *s)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SWF_DEMUXER
|
||||
AVInputFormat swf_demuxer = {
|
||||
"swf",
|
||||
"Flash format",
|
||||
sizeof(SWFContext),
|
||||
swf_probe,
|
||||
swf_read_header,
|
||||
swf_read_packet,
|
||||
swf_read_close,
|
||||
};
|
||||
#endif
|
||||
#ifdef CONFIG_SWF_MUXER
|
||||
AVOutputFormat swf_muxer = {
|
||||
"swf",
|
Loading…
Reference in New Issue
Block a user