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Diffstat (limited to 'ffmpeg/libavformat/swfenc.c')
-rw-r--r--ffmpeg/libavformat/swfenc.c545
1 files changed, 0 insertions, 545 deletions
diff --git a/ffmpeg/libavformat/swfenc.c b/ffmpeg/libavformat/swfenc.c
deleted file mode 100644
index 8d9cf0c..0000000
--- a/ffmpeg/libavformat/swfenc.c
+++ /dev/null
@@ -1,545 +0,0 @@
-/*
- * Flash Compatible Streaming Format muxer
- * 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/put_bits.h"
-#include "libavutil/avassert.h"
-#include "avformat.h"
-#include "swf.h"
-
-static void put_swf_tag(AVFormatContext *s, int tag)
-{
- SWFContext *swf = s->priv_data;
- AVIOContext *pb = s->pb;
-
- swf->tag_pos = avio_tell(pb);
- swf->tag = tag;
- /* reserve some room for the tag */
- if (tag & TAG_LONG) {
- avio_wl16(pb, 0);
- avio_wl32(pb, 0);
- } else {
- avio_wl16(pb, 0);
- }
-}
-
-static void put_swf_end_tag(AVFormatContext *s)
-{
- SWFContext *swf = s->priv_data;
- AVIOContext *pb = s->pb;
- int64_t pos;
- int tag_len, tag;
-
- pos = avio_tell(pb);
- tag_len = pos - swf->tag_pos - 2;
- tag = swf->tag;
- avio_seek(pb, swf->tag_pos, SEEK_SET);
- if (tag & TAG_LONG) {
- tag &= ~TAG_LONG;
- avio_wl16(pb, (tag << 6) | 0x3f);
- avio_wl32(pb, tag_len - 4);
- } else {
- av_assert0(tag_len < 0x3f);
- avio_wl16(pb, (tag << 6) | tag_len);
- }
- avio_seek(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(AVIOContext *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);
- avio_write(pb, buf, put_bits_ptr(&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
-
-static void put_swf_matrix(AVIOContext *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);
- avio_write(pb, buf, put_bits_ptr(&p) - p.buf);
-}
-
-static int swf_write_header(AVFormatContext *s)
-{
- SWFContext *swf = s->priv_data;
- AVIOContext *pb = s->pb;
- PutBitContext p;
- uint8_t buf1[256];
- int i, width, height, rate, rate_base;
- int version;
-
- swf->sound_samples = 0;
- swf->swf_frame_number = 0;
- swf->video_frame_number = 0;
-
- for(i=0;i<s->nb_streams;i++) {
- AVCodecContext *enc = s->streams[i]->codec;
- if (enc->codec_type == AVMEDIA_TYPE_AUDIO) {
- if (swf->audio_enc) {
- av_log(s, AV_LOG_ERROR, "SWF muxer only supports 1 audio stream\n");
- return AVERROR_INVALIDDATA;
- }
- if (enc->codec_id == AV_CODEC_ID_MP3) {
- if (!enc->frame_size) {
- av_log(s, AV_LOG_ERROR, "audio frame size not set\n");
- return -1;
- }
- swf->audio_enc = enc;
- swf->audio_fifo= av_fifo_alloc(AUDIO_FIFO_SIZE);
- if (!swf->audio_fifo)
- return AVERROR(ENOMEM);
- } else {
- av_log(s, AV_LOG_ERROR, "SWF muxer only supports MP3\n");
- return -1;
- }
- } else {
- if (swf->video_enc) {
- av_log(s, AV_LOG_ERROR, "SWF muxer only supports 1 video stream\n");
- return AVERROR_INVALIDDATA;
- }
- if (enc->codec_id == AV_CODEC_ID_VP6F ||
- enc->codec_id == AV_CODEC_ID_FLV1 ||
- enc->codec_id == AV_CODEC_ID_MJPEG) {
- swf->video_enc = enc;
- } else {
- av_log(s, AV_LOG_ERROR, "SWF muxer only supports VP6, FLV1 and MJPEG\n");
- return -1;
- }
- }
- }
-
- if (!swf->video_enc) {
- /* currently, cannot work correctly if audio only */
- width = 320;
- height = 200;
- rate = 10;
- rate_base= 1;
- } else {
- width = swf->video_enc->width;
- height = swf->video_enc->height;
- rate = swf->video_enc->time_base.den;
- rate_base = swf->video_enc->time_base.num;
- }
-
- if (!swf->audio_enc)
- swf->samples_per_frame = (44100.0 * rate_base) / rate;
- else
- swf->samples_per_frame = (swf->audio_enc->sample_rate * rate_base) / rate;
-
- avio_write(pb, "FWS", 3);
-
- if (!strcmp("avm2", s->oformat->name))
- version = 9;
- else if (swf->video_enc && swf->video_enc->codec_id == AV_CODEC_ID_VP6F)
- version = 8; /* version 8 and above support VP6 codec */
- else if (swf->video_enc && swf->video_enc->codec_id == AV_CODEC_ID_FLV1)
- version = 6; /* version 6 and above support FLV1 codec */
- else
- version = 4; /* version 4 for mpeg audio support */
- avio_w8(pb, version);
-
- avio_wl32(pb, DUMMY_FILE_SIZE); /* dummy size
- (will be patched if not streamed) */
-
- put_swf_rect(pb, 0, width * 20, 0, height * 20);
- avio_wl16(pb, (rate * 256) / rate_base); /* frame rate */
- swf->duration_pos = avio_tell(pb);
- avio_wl16(pb, (uint16_t)(DUMMY_DURATION * (int64_t)rate / rate_base)); /* frame count */
-
- /* avm2/swf v9 (also v8?) files require a file attribute tag */
- if (version == 9) {
- put_swf_tag(s, TAG_FILEATTRIBUTES);
- avio_wl32(pb, 1<<3); /* set ActionScript v3/AVM2 flag */
- put_swf_end_tag(s);
- }
-
- /* define a shape with the jpeg inside */
- if (swf->video_enc && swf->video_enc->codec_id == AV_CODEC_ID_MJPEG) {
- put_swf_tag(s, TAG_DEFINESHAPE);
-
- avio_wl16(pb, SHAPE_ID); /* ID of shape */
- /* bounding rectangle */
- put_swf_rect(pb, 0, width, 0, height);
- /* style info */
- avio_w8(pb, 1); /* one fill style */
- avio_w8(pb, 0x41); /* clipped bitmap fill */
- avio_wl16(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);
- avio_w8(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);
- avio_write(pb, buf1, put_bits_ptr(&p) - p.buf);
-
- put_swf_end_tag(s);
- }
-
- if (swf->audio_enc && swf->audio_enc->codec_id == AV_CODEC_ID_MP3) {
- int v = 0;
-
- /* start sound */
- put_swf_tag(s, TAG_STREAMHEAD2);
- switch(swf->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 (swf->audio_enc->channels == 2)
- v |= 0x01; /* stereo playback */
- avio_w8(s->pb, v);
- v |= 0x20; /* mp3 compressed */
- avio_w8(s->pb, v);
- avio_wl16(s->pb, swf->samples_per_frame); /* avg samples per frame */
- avio_wl16(s->pb, 0);
-
- put_swf_end_tag(s);
- }
-
- avio_flush(s->pb);
- return 0;
-}
-
-static int swf_write_video(AVFormatContext *s,
- AVCodecContext *enc, const uint8_t *buf, int size)
-{
- SWFContext *swf = s->priv_data;
- AVIOContext *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 (enc->codec_id == AV_CODEC_ID_VP6F ||
- enc->codec_id == AV_CODEC_ID_FLV1) {
- if (swf->video_frame_number == 0) {
- /* create a new video object */
- put_swf_tag(s, TAG_VIDEOSTREAM);
- avio_wl16(pb, VIDEO_ID);
- swf->vframes_pos = avio_tell(pb);
- avio_wl16(pb, 15000); /* hard flash player limit */
- avio_wl16(pb, enc->width);
- avio_wl16(pb, enc->height);
- avio_w8(pb, 0);
- avio_w8(pb,ff_codec_get_tag(ff_swf_codec_tags, enc->codec_id));
- put_swf_end_tag(s);
-
- /* place the video object for the first time */
- put_swf_tag(s, TAG_PLACEOBJECT2);
- avio_w8(pb, 0x36);
- avio_wl16(pb, 1);
- avio_wl16(pb, VIDEO_ID);
- put_swf_matrix(pb, 1 << FRAC_BITS, 0, 0, 1 << FRAC_BITS, 0, 0);
- avio_wl16(pb, swf->video_frame_number);
- avio_write(pb, "video", 5);
- avio_w8(pb, 0x00);
- put_swf_end_tag(s);
- } else {
- /* mark the character for update */
- put_swf_tag(s, TAG_PLACEOBJECT2);
- avio_w8(pb, 0x11);
- avio_wl16(pb, 1);
- avio_wl16(pb, swf->video_frame_number);
- put_swf_end_tag(s);
- }
-
- /* set video frame data */
- put_swf_tag(s, TAG_VIDEOFRAME | TAG_LONG);
- avio_wl16(pb, VIDEO_ID);
- avio_wl16(pb, swf->video_frame_number++);
- avio_write(pb, buf, size);
- put_swf_end_tag(s);
- } else if (enc->codec_id == AV_CODEC_ID_MJPEG) {
- if (swf->swf_frame_number > 0) {
- /* remove the shape */
- put_swf_tag(s, TAG_REMOVEOBJECT);
- avio_wl16(pb, SHAPE_ID); /* shape ID */
- avio_wl16(pb, 1); /* depth */
- put_swf_end_tag(s);
-
- /* free the bitmap */
- put_swf_tag(s, TAG_FREECHARACTER);
- avio_wl16(pb, BITMAP_ID);
- put_swf_end_tag(s);
- }
-
- put_swf_tag(s, TAG_JPEG2 | TAG_LONG);
-
- avio_wl16(pb, BITMAP_ID); /* ID of the image */
-
- /* a dummy jpeg header seems to be required */
- avio_wb32(pb, 0xffd8ffd9);
- /* write the jpeg image */
- avio_write(pb, buf, size);
-
- put_swf_end_tag(s);
-
- /* draw the shape */
-
- put_swf_tag(s, TAG_PLACEOBJECT);
- avio_wl16(pb, SHAPE_ID); /* shape ID */
- avio_wl16(pb, 1); /* depth */
- put_swf_matrix(pb, 20 << FRAC_BITS, 0, 0, 20 << FRAC_BITS, 0, 0);
- put_swf_end_tag(s);
- }
-
- swf->swf_frame_number++;
-
- /* streaming sound always should be placed just before showframe tags */
- if (swf->audio_enc && av_fifo_size(swf->audio_fifo)) {
- int frame_size = av_fifo_size(swf->audio_fifo);
- put_swf_tag(s, TAG_STREAMBLOCK | TAG_LONG);
- avio_wl16(pb, swf->sound_samples);
- avio_wl16(pb, 0); // seek samples
- av_fifo_generic_read(swf->audio_fifo, pb, frame_size, (void*)avio_write);
- put_swf_end_tag(s);
-
- /* update FIFO */
- swf->sound_samples = 0;
- }
-
- /* output the frame */
- put_swf_tag(s, TAG_SHOWFRAME);
- put_swf_end_tag(s);
-
- return 0;
-}
-
-static int swf_write_audio(AVFormatContext *s,
- AVCodecContext *enc, 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 (av_fifo_size(swf->audio_fifo) + size > AUDIO_FIFO_SIZE) {
- av_log(s, AV_LOG_ERROR, "audio fifo too small to mux audio essence\n");
- return -1;
- }
-
- av_fifo_generic_write(swf->audio_fifo, buf, size, NULL);
- swf->sound_samples += enc->frame_size;
-
- /* if audio only stream make sure we add swf frames */
- if (!swf->video_enc)
- 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 == AVMEDIA_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;
- AVIOContext *pb = s->pb;
- AVCodecContext *enc, *video_enc;
- int file_size, i;
-
- video_enc = NULL;
- for(i=0;i<s->nb_streams;i++) {
- enc = s->streams[i]->codec;
- if (enc->codec_type == AVMEDIA_TYPE_VIDEO)
- video_enc = enc;
- else {
- av_fifo_free(swf->audio_fifo);
- swf->audio_fifo = NULL;
- }
- }
-
- put_swf_tag(s, TAG_END);
- put_swf_end_tag(s);
-
- /* patch file size and number of frames if not streamed */
- if (s->pb->seekable && video_enc) {
- file_size = avio_tell(pb);
- avio_seek(pb, 4, SEEK_SET);
- avio_wl32(pb, file_size);
- avio_seek(pb, swf->duration_pos, SEEK_SET);
- avio_wl16(pb, swf->video_frame_number);
- if (swf->vframes_pos) {
- avio_seek(pb, swf->vframes_pos, SEEK_SET);
- avio_wl16(pb, swf->video_frame_number);
- }
- avio_seek(pb, file_size, SEEK_SET);
- }
- return 0;
-}
-
-#if CONFIG_SWF_MUXER
-AVOutputFormat ff_swf_muxer = {
- .name = "swf",
- .long_name = NULL_IF_CONFIG_SMALL("SWF (ShockWave Flash)"),
- .mime_type = "application/x-shockwave-flash",
- .extensions = "swf",
- .priv_data_size = sizeof(SWFContext),
- .audio_codec = AV_CODEC_ID_MP3,
- .video_codec = AV_CODEC_ID_FLV1,
- .write_header = swf_write_header,
- .write_packet = swf_write_packet,
- .write_trailer = swf_write_trailer,
- .flags = AVFMT_TS_NONSTRICT,
-};
-#endif
-#if CONFIG_AVM2_MUXER
-AVOutputFormat ff_avm2_muxer = {
- .name = "avm2",
- .long_name = NULL_IF_CONFIG_SMALL("SWF (ShockWave Flash) (AVM2)"),
- .mime_type = "application/x-shockwave-flash",
- .priv_data_size = sizeof(SWFContext),
- .audio_codec = AV_CODEC_ID_MP3,
- .video_codec = AV_CODEC_ID_FLV1,
- .write_header = swf_write_header,
- .write_packet = swf_write_packet,
- .write_trailer = swf_write_trailer,
- .flags = AVFMT_TS_NONSTRICT,
-};
-#endif
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