From 3b35f4ab51b8b720491ff5c9b4e86e2de8ebce07 Mon Sep 17 00:00:00 2001 From: Baptiste Coudurier Date: Tue, 20 May 2008 23:31:10 +0000 Subject: split swf de/muxer Originally committed as revision 13203 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavformat/swf.c | 817 ------------------------------------------------------ 1 file changed, 817 deletions(-) delete mode 100644 libavformat/swf.c (limited to 'libavformat/swf.c') diff --git a/libavformat/swf.c b/libavformat/swf.c deleted file mode 100644 index 9d7d0f27e0..0000000000 --- a/libavformat/swf.c +++ /dev/null @@ -1,817 +0,0 @@ -/* - * Flash Compatible Streaming Format - * Copyright (c) 2000 Fabrice Bellard. - * Copyright (c) 2003 Tinic Uro. - * - * 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 "libavcodec/bitstream.h" -#include "avformat.h" -#include "riff.h" /* for CodecTag */ - -/* should have a generic way to indicate probable size */ -#define DUMMY_FILE_SIZE (100 * 1024 * 1024) -#define DUMMY_DURATION 600 /* in seconds */ - -#define TAG_END 0 -#define TAG_SHOWFRAME 1 -#define TAG_DEFINESHAPE 2 -#define TAG_FREECHARACTER 3 -#define TAG_PLACEOBJECT 4 -#define TAG_REMOVEOBJECT 5 -#define TAG_STREAMHEAD 18 -#define TAG_STREAMBLOCK 19 -#define TAG_JPEG2 21 -#define TAG_PLACEOBJECT2 26 -#define TAG_STREAMHEAD2 45 -#define TAG_VIDEOSTREAM 60 -#define TAG_VIDEOFRAME 61 -#define TAG_FILEATTRIBUTES 69 - -#define TAG_LONG 0x100 - -/* flags for shape definition */ -#define FLAG_MOVETO 0x01 -#define FLAG_SETFILL0 0x02 -#define FLAG_SETFILL1 0x04 - -#define AUDIO_FIFO_SIZE 65536 - -/* character id used */ -#define BITMAP_ID 0 -#define VIDEO_ID 0 -#define SHAPE_ID 1 - -#undef NDEBUG -#include - -typedef struct { - int audio_stream_index; - offset_t duration_pos; - offset_t tag_pos; - - int samples_per_frame; - int sound_samples; - int swf_frame_number; - int video_frame_number; - int frame_rate; - int tag; - - uint8_t audio_fifo[AUDIO_FIFO_SIZE]; - int audio_in_pos; - - int video_type; - int audio_type; -} SWFContext; - -static const AVCodecTag swf_codec_tags[] = { - {CODEC_ID_FLV1, 0x02}, - {CODEC_ID_VP6F, 0x04}, - {0, 0}, -}; - -static const AVCodecTag swf_audio_codec_tags[] = { - {CODEC_ID_PCM_S16LE, 0x00}, - {CODEC_ID_ADPCM_SWF, 0x01}, - {CODEC_ID_MP3, 0x02}, - {CODEC_ID_PCM_S16LE, 0x03}, - //{CODEC_ID_NELLYMOSER, 0x06}, - {0, 0}, -}; - -#ifdef CONFIG_MUXERS -static void put_swf_tag(AVFormatContext *s, int tag) -{ - SWFContext *swf = s->priv_data; - ByteIOContext *pb = s->pb; - - swf->tag_pos = url_ftell(pb); - swf->tag = tag; - /* reserve some room for the tag */ - if (tag & TAG_LONG) { - put_le16(pb, 0); - put_le32(pb, 0); - } else { - put_le16(pb, 0); - } -} - -static void put_swf_end_tag(AVFormatContext *s) -{ - SWFContext *swf = s->priv_data; - ByteIOContext *pb = s->pb; - offset_t pos; - int tag_len, tag; - - pos = url_ftell(pb); - tag_len = pos - swf->tag_pos - 2; - tag = swf->tag; - url_fseek(pb, swf->tag_pos, SEEK_SET); - if (tag & TAG_LONG) { - tag &= ~TAG_LONG; - put_le16(pb, (tag << 6) | 0x3f); - put_le32(pb, tag_len - 4); - } else { - assert(tag_len < 0x3f); - put_le16(pb, (tag << 6) | tag_len); - } - url_fseek(pb, pos, SEEK_SET); -} - -static inline void max_nbits(int *nbits_ptr, int val) -{ - int n; - - if (val == 0) - return; - val = abs(val); - n = 1; - while (val != 0) { - n++; - val >>= 1; - } - if (n > *nbits_ptr) - *nbits_ptr = n; -} - -static void put_swf_rect(ByteIOContext *pb, - int xmin, int xmax, int ymin, int ymax) -{ - PutBitContext p; - uint8_t buf[256]; - int nbits, mask; - - init_put_bits(&p, buf, sizeof(buf)); - - nbits = 0; - max_nbits(&nbits, xmin); - max_nbits(&nbits, xmax); - max_nbits(&nbits, ymin); - max_nbits(&nbits, ymax); - mask = (1 << nbits) - 1; - - /* rectangle info */ - put_bits(&p, 5, nbits); - put_bits(&p, nbits, xmin & mask); - put_bits(&p, nbits, xmax & mask); - put_bits(&p, nbits, ymin & mask); - put_bits(&p, nbits, ymax & mask); - - flush_put_bits(&p); - put_buffer(pb, buf, pbBufPtr(&p) - p.buf); -} - -static void put_swf_line_edge(PutBitContext *pb, int dx, int dy) -{ - int nbits, mask; - - put_bits(pb, 1, 1); /* edge */ - put_bits(pb, 1, 1); /* line select */ - nbits = 2; - max_nbits(&nbits, dx); - max_nbits(&nbits, dy); - - mask = (1 << nbits) - 1; - put_bits(pb, 4, nbits - 2); /* 16 bits precision */ - if (dx == 0) { - put_bits(pb, 1, 0); - put_bits(pb, 1, 1); - put_bits(pb, nbits, dy & mask); - } else if (dy == 0) { - put_bits(pb, 1, 0); - put_bits(pb, 1, 0); - put_bits(pb, nbits, dx & mask); - } else { - put_bits(pb, 1, 1); - put_bits(pb, nbits, dx & mask); - put_bits(pb, nbits, dy & mask); - } -} - -#define FRAC_BITS 16 - -/* put matrix */ -static void put_swf_matrix(ByteIOContext *pb, - int a, int b, int c, int d, int tx, int ty) -{ - PutBitContext p; - uint8_t buf[256]; - int nbits; - - init_put_bits(&p, buf, sizeof(buf)); - - put_bits(&p, 1, 1); /* a, d present */ - nbits = 1; - max_nbits(&nbits, a); - max_nbits(&nbits, d); - put_bits(&p, 5, nbits); /* nb bits */ - put_bits(&p, nbits, a); - put_bits(&p, nbits, d); - - put_bits(&p, 1, 1); /* b, c present */ - nbits = 1; - max_nbits(&nbits, c); - max_nbits(&nbits, b); - put_bits(&p, 5, nbits); /* nb bits */ - put_bits(&p, nbits, c); - put_bits(&p, nbits, b); - - nbits = 1; - max_nbits(&nbits, tx); - max_nbits(&nbits, ty); - put_bits(&p, 5, nbits); /* nb bits */ - put_bits(&p, nbits, tx); - put_bits(&p, nbits, ty); - - flush_put_bits(&p); - put_buffer(pb, buf, pbBufPtr(&p) - p.buf); -} - -/* */ -static int swf_write_header(AVFormatContext *s) -{ - SWFContext *swf = s->priv_data; - ByteIOContext *pb = s->pb; - AVCodecContext *enc, *audio_enc, *video_enc; - PutBitContext p; - uint8_t buf1[256]; - int i, width, height, rate, rate_base; - int is_avm2; - - swf->audio_in_pos = 0; - swf->sound_samples = 0; - swf->swf_frame_number = 0; - swf->video_frame_number = 0; - - video_enc = NULL; - audio_enc = NULL; - for(i=0;inb_streams;i++) { - enc = s->streams[i]->codec; - if (enc->codec_type == CODEC_TYPE_AUDIO) { - if (enc->codec_id == CODEC_ID_MP3) { - if (!enc->frame_size) { - av_log(s, AV_LOG_ERROR, "audio frame size not set\n"); - return -1; - } - audio_enc = enc; - } else { - av_log(s, AV_LOG_ERROR, "SWF muxer only supports MP3\n"); - return -1; - } - } else { - if (enc->codec_id == CODEC_ID_VP6F || - enc->codec_id == CODEC_ID_FLV1 || - enc->codec_id == CODEC_ID_MJPEG) { - video_enc = enc; - } else { - av_log(s, AV_LOG_ERROR, "SWF muxer only supports VP6, FLV1 and MJPEG\n"); - return -1; - } - } - } - - if (!video_enc) { - /* currently, cannot work correctly if audio only */ - swf->video_type = 0; - width = 320; - height = 200; - rate = 10; - rate_base= 1; - } else { - swf->video_type = video_enc->codec_id; - width = video_enc->width; - height = video_enc->height; - rate = video_enc->time_base.den; - rate_base = video_enc->time_base.num; - } - - if (!audio_enc) { - swf->audio_type = 0; - swf->samples_per_frame = (44100. * rate_base) / rate; - } else { - swf->audio_type = audio_enc->codec_id; - swf->samples_per_frame = (audio_enc->sample_rate * rate_base) / rate; - } - - is_avm2 = !strcmp("avm2", s->oformat->name); - - put_tag(pb, "FWS"); - if (is_avm2) { - put_byte(pb, 9); - } else if (video_enc && video_enc->codec_id == CODEC_ID_VP6F) { - put_byte(pb, 8); /* version (version 8 and above support VP6 codec) */ - } else if (video_enc && video_enc->codec_id == CODEC_ID_FLV1) { - put_byte(pb, 6); /* version (version 6 and above support FLV1 codec) */ - } else { - put_byte(pb, 4); /* version (should use 4 for mpeg audio support) */ - } - put_le32(pb, DUMMY_FILE_SIZE); /* dummy size - (will be patched if not streamed) */ - - put_swf_rect(pb, 0, width * 20, 0, height * 20); - put_le16(pb, (rate * 256) / rate_base); /* frame rate */ - swf->duration_pos = url_ftell(pb); - put_le16(pb, (uint16_t)(DUMMY_DURATION * (int64_t)rate / rate_base)); /* frame count */ - - /* avm2/swf v9 (also v8?) files require a file attribute tag */ - if (is_avm2) { - put_swf_tag(s, TAG_FILEATTRIBUTES); - put_le32(pb, 1<<3); /* set ActionScript v3/AVM2 flag */ - put_swf_end_tag(s); - } - - /* define a shape with the jpeg inside */ - if (video_enc && (video_enc->codec_id == CODEC_ID_VP6F || - video_enc->codec_id == CODEC_ID_FLV1)) { - } else if (video_enc && video_enc->codec_id == CODEC_ID_MJPEG) { - put_swf_tag(s, TAG_DEFINESHAPE); - - put_le16(pb, SHAPE_ID); /* ID of shape */ - /* bounding rectangle */ - put_swf_rect(pb, 0, width, 0, height); - /* style info */ - put_byte(pb, 1); /* one fill style */ - put_byte(pb, 0x41); /* clipped bitmap fill */ - put_le16(pb, BITMAP_ID); /* bitmap ID */ - /* position of the bitmap */ - put_swf_matrix(pb, (int)(1.0 * (1 << FRAC_BITS)), 0, - 0, (int)(1.0 * (1 << FRAC_BITS)), 0, 0); - put_byte(pb, 0); /* no line style */ - - /* shape drawing */ - init_put_bits(&p, buf1, sizeof(buf1)); - put_bits(&p, 4, 1); /* one fill bit */ - put_bits(&p, 4, 0); /* zero line bit */ - - put_bits(&p, 1, 0); /* not an edge */ - put_bits(&p, 5, FLAG_MOVETO | FLAG_SETFILL0); - put_bits(&p, 5, 1); /* nbits */ - put_bits(&p, 1, 0); /* X */ - put_bits(&p, 1, 0); /* Y */ - put_bits(&p, 1, 1); /* set fill style 1 */ - - /* draw the rectangle ! */ - put_swf_line_edge(&p, width, 0); - put_swf_line_edge(&p, 0, height); - put_swf_line_edge(&p, -width, 0); - put_swf_line_edge(&p, 0, -height); - - /* end of shape */ - put_bits(&p, 1, 0); /* not an edge */ - put_bits(&p, 5, 0); - - flush_put_bits(&p); - put_buffer(pb, buf1, pbBufPtr(&p) - p.buf); - - put_swf_end_tag(s); - } - - if (audio_enc && audio_enc->codec_id == CODEC_ID_MP3) { - int v; - - /* start sound */ - put_swf_tag(s, TAG_STREAMHEAD2); - - v = 0; - switch(audio_enc->sample_rate) { - case 11025: - v |= 1 << 2; - break; - case 22050: - v |= 2 << 2; - break; - case 44100: - v |= 3 << 2; - break; - default: - /* not supported */ - av_log(s, AV_LOG_ERROR, "swf does not support that sample rate, choose from (44100, 22050, 11025).\n"); - return -1; - } - v |= 0x02; /* 16 bit playback */ - if (audio_enc->channels == 2) - v |= 0x01; /* stereo playback */ - put_byte(s->pb, v); - v |= 0x20; /* mp3 compressed */ - put_byte(s->pb, v); - put_le16(s->pb, swf->samples_per_frame); /* avg samples per frame */ - put_le16(s->pb, 0); - - put_swf_end_tag(s); - } - - put_flush_packet(s->pb); - return 0; -} - -static int swf_write_video(AVFormatContext *s, - AVCodecContext *enc, const uint8_t *buf, int size) -{ - SWFContext *swf = s->priv_data; - ByteIOContext *pb = s->pb; - - /* Flash Player limit */ - if (swf->swf_frame_number == 16000) { - av_log(enc, AV_LOG_INFO, "warning: Flash Player limit of 16000 frames reached\n"); - } - - if (swf->video_type == CODEC_ID_VP6F || - swf->video_type == CODEC_ID_FLV1) { - if (swf->video_frame_number == 0) { - /* create a new video object */ - put_swf_tag(s, TAG_VIDEOSTREAM); - put_le16(pb, VIDEO_ID); - put_le16(pb, 15000); /* hard flash player limit */ - put_le16(pb, enc->width); - put_le16(pb, enc->height); - put_byte(pb, 0); - put_byte(pb,codec_get_tag(swf_codec_tags,swf->video_type)); - put_swf_end_tag(s); - - /* place the video object for the first time */ - put_swf_tag(s, TAG_PLACEOBJECT2); - put_byte(pb, 0x36); - put_le16(pb, 1); - put_le16(pb, VIDEO_ID); - put_swf_matrix(pb, 1 << FRAC_BITS, 0, 0, 1 << FRAC_BITS, 0, 0); - put_le16(pb, swf->video_frame_number); - put_byte(pb, 'v'); - put_byte(pb, 'i'); - put_byte(pb, 'd'); - put_byte(pb, 'e'); - put_byte(pb, 'o'); - put_byte(pb, 0x00); - put_swf_end_tag(s); - } else { - /* mark the character for update */ - put_swf_tag(s, TAG_PLACEOBJECT2); - put_byte(pb, 0x11); - put_le16(pb, 1); - put_le16(pb, swf->video_frame_number); - put_swf_end_tag(s); - } - - /* set video frame data */ - put_swf_tag(s, TAG_VIDEOFRAME | TAG_LONG); - put_le16(pb, VIDEO_ID); - put_le16(pb, swf->video_frame_number++); - put_buffer(pb, buf, size); - put_swf_end_tag(s); - } else if (swf->video_type == CODEC_ID_MJPEG) { - if (swf->swf_frame_number > 0) { - /* remove the shape */ - put_swf_tag(s, TAG_REMOVEOBJECT); - put_le16(pb, SHAPE_ID); /* shape ID */ - put_le16(pb, 1); /* depth */ - put_swf_end_tag(s); - - /* free the bitmap */ - put_swf_tag(s, TAG_FREECHARACTER); - put_le16(pb, BITMAP_ID); - put_swf_end_tag(s); - } - - put_swf_tag(s, TAG_JPEG2 | TAG_LONG); - - put_le16(pb, BITMAP_ID); /* ID of the image */ - - /* a dummy jpeg header seems to be required */ - put_byte(pb, 0xff); - put_byte(pb, 0xd8); - put_byte(pb, 0xff); - put_byte(pb, 0xd9); - /* write the jpeg image */ - put_buffer(pb, buf, size); - - put_swf_end_tag(s); - - /* draw the shape */ - - put_swf_tag(s, TAG_PLACEOBJECT); - put_le16(pb, SHAPE_ID); /* shape ID */ - put_le16(pb, 1); /* depth */ - put_swf_matrix(pb, 20 << FRAC_BITS, 0, 0, 20 << FRAC_BITS, 0, 0); - put_swf_end_tag(s); - } else { - /* invalid codec */ - } - - swf->swf_frame_number ++; - - /* streaming sound always should be placed just before showframe tags */ - if (swf->audio_type && swf->audio_in_pos) { - put_swf_tag(s, TAG_STREAMBLOCK | TAG_LONG); - put_le16(pb, swf->sound_samples); - put_le16(pb, 0); // seek samples - put_buffer(pb, swf->audio_fifo, swf->audio_in_pos); - put_swf_end_tag(s); - - /* update FIFO */ - swf->sound_samples = 0; - swf->audio_in_pos = 0; - } - - /* output the frame */ - put_swf_tag(s, TAG_SHOWFRAME); - put_swf_end_tag(s); - - put_flush_packet(s->pb); - - return 0; -} - -static int swf_write_audio(AVFormatContext *s, - AVCodecContext *enc, const uint8_t *buf, int size) -{ - SWFContext *swf = s->priv_data; - - /* Flash Player limit */ - if (swf->swf_frame_number == 16000) { - av_log(enc, AV_LOG_INFO, "warning: Flash Player limit of 16000 frames reached\n"); - } - - if (swf->audio_in_pos + size >= AUDIO_FIFO_SIZE) { - av_log(s, AV_LOG_ERROR, "audio fifo too small to mux audio essence\n"); - return -1; - } - - memcpy(swf->audio_fifo + swf->audio_in_pos, buf, size); - swf->audio_in_pos += size; - swf->sound_samples += enc->frame_size; - - /* if audio only stream make sure we add swf frames */ - if (swf->video_type == 0) { - swf_write_video(s, enc, 0, 0); - } - - return 0; -} - -static int swf_write_packet(AVFormatContext *s, AVPacket *pkt) -{ - AVCodecContext *codec = s->streams[pkt->stream_index]->codec; - if (codec->codec_type == CODEC_TYPE_AUDIO) - return swf_write_audio(s, codec, pkt->data, pkt->size); - else - return swf_write_video(s, codec, pkt->data, pkt->size); -} - -static int swf_write_trailer(AVFormatContext *s) -{ - SWFContext *swf = s->priv_data; - ByteIOContext *pb = s->pb; - AVCodecContext *enc, *video_enc; - int file_size, i; - - video_enc = NULL; - for(i=0;inb_streams;i++) { - enc = s->streams[i]->codec; - if (enc->codec_type == CODEC_TYPE_VIDEO) - video_enc = enc; - } - - put_swf_tag(s, TAG_END); - put_swf_end_tag(s); - - put_flush_packet(s->pb); - - /* patch file size and number of frames if not streamed */ - if (!url_is_streamed(s->pb) && video_enc) { - file_size = url_ftell(pb); - url_fseek(pb, 4, SEEK_SET); - put_le32(pb, file_size); - url_fseek(pb, swf->duration_pos, SEEK_SET); - put_le16(pb, video_enc->frame_number); - url_fseek(pb, file_size, SEEK_SET); - } - return 0; -} -#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 */ - -static int get_swf_tag(ByteIOContext *pb, int *len_ptr) -{ - int tag, len; - - if (url_feof(pb)) - return -1; - - tag = get_le16(pb); - len = tag & 0x3f; - tag = tag >> 6; - if (len == 0x3f) { - len = get_le32(pb); - } -// av_log(NULL, AV_LOG_DEBUG, "Tag: %d - Len: %d\n", tag, len); - *len_ptr = len; - return tag; -} - - -static int swf_probe(AVProbeData *p) -{ - /* 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; inb_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; inb_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", - "Flash format", - "application/x-shockwave-flash", - "swf", - sizeof(SWFContext), - CODEC_ID_MP3, - CODEC_ID_FLV1, - swf_write_header, - swf_write_packet, - swf_write_trailer, -}; -#endif -#ifdef CONFIG_AVM2_MUXER -AVOutputFormat avm2_muxer = { - "avm2", - "Flash 9 (AVM2) format", - "application/x-shockwave-flash", - NULL, - sizeof(SWFContext), - CODEC_ID_MP3, - CODEC_ID_FLV1, - swf_write_header, - swf_write_packet, - swf_write_trailer, -}; -#endif -- cgit v1.2.3