* Copyright (c) 2000 Fabrice Bellard.
* Copyright (c) 2003 Tinic Uro.
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * 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 this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * 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 "bitstream.h"
+#include "riff.h" /* for CodecTag */
/* should have a generic way to indicate probable size */
#define DUMMY_FILE_SIZE (100 * 1024 * 1024)
#define TAG_JPEG2 21
#define TAG_PLACEOBJECT2 26
#define TAG_STREAMHEAD2 45
-#define TAG_VIDEOSTREAM 60
+#define TAG_VIDEOSTREAM 60
#define TAG_VIDEOFRAME 61
#define TAG_LONG 0x100
#define FLAG_SETFILL0 0x02
#define FLAG_SETFILL1 0x04
-#define SWF_VIDEO_CODEC_FLV1 0x02
-
#define AUDIO_FIFO_SIZE 65536
/* character id used */
offset_t duration_pos;
offset_t tag_pos;
-
+
int samples_per_frame;
int sound_samples;
int video_samples;
int audio_type;
} SWFContext;
+static const CodecTag swf_codec_tags[] = {
+ {CODEC_ID_FLV1, 0x02},
+ {CODEC_ID_VP6F, 0x04},
+ {0, 0},
+};
+
static const int sSampleRates[3][4] = {
{44100, 48000, 32000, 0},
{22050, 24000, 16000, 0},
int bitRate = 0;
int bitsPerSlot = sBitsPerSlot[layerID];
int isPadded = ((header >> 9) & 0x01);
-
+
if ( (( header >> 21 ) & 0x7ff) != 0x7ff ) {
return 0;
}
*nbits_ptr = n;
}
-static void put_swf_rect(ByteIOContext *pb,
+static void put_swf_rect(ByteIOContext *pb,
int xmin, int xmax, int ymin, int ymax)
{
PutBitContext p;
int nbits, mask;
init_put_bits(&p, buf, sizeof(buf));
-
+
nbits = 0;
max_nbits(&nbits, xmin);
max_nbits(&nbits, xmax);
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);
}
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, 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, 1, 0);
+ put_bits(pb, 1, 0);
put_bits(pb, nbits, dx & mask);
} else {
- put_bits(pb, 1, 1);
+ put_bits(pb, 1, 1);
put_bits(pb, nbits, dx & mask);
put_bits(pb, nbits, dy & mask);
}
int nbits;
init_put_bits(&p, buf, sizeof(buf));
-
+
put_bits(&p, 1, 1); /* a, d present */
nbits = 1;
max_nbits(&nbits, a);
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);
if (enc->codec_type == CODEC_TYPE_AUDIO)
audio_enc = enc;
else {
- if ( enc->codec_id == CODEC_ID_FLV1 || enc->codec_id == CODEC_ID_MJPEG ) {
+ 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(enc, AV_LOG_ERROR, "SWF only supports FLV1 and MJPEG\n");
+ av_log(enc, AV_LOG_ERROR, "SWF only supports VP6, FLV1 and MJPEG\n");
return -1;
}
}
}
put_tag(pb, "FWS");
- if ( video_enc && video_enc->codec_id == CODEC_ID_FLV1 ) {
+ 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_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 */
-
+
/* define a shape with the jpeg inside */
- if ( video_enc && video_enc->codec_id == CODEC_ID_FLV1 ) {
+ 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_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,
+ 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);
put_swf_end_tag(s);
}
-
+
if (audio_enc && audio_enc->codec_id == CODEC_ID_MP3 ) {
int v;
break;
default:
/* not supported */
+ av_log(s, AV_LOG_ERROR, "swf doesnt support that sample rate, choose from (44100, 22050, 11025)\n");
av_free(swf->audio_fifo);
av_free(swf);
return -1;
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);
}
return 0;
}
-static int swf_write_video(AVFormatContext *s,
+static int swf_write_video(AVFormatContext *s,
AVCodecContext *enc, const uint8_t *buf, int size)
{
SWFContext *swf = s->priv_data;
int c = 0;
int outSize = 0;
int outSamples = 0;
-
+
/* Flash Player limit */
if ( swf->swf_frame_number == 16000 ) {
av_log(enc, AV_LOG_INFO, "warning: Flash Player limit of 16000 frames reached\n");
int mp3SampleRate = 0;
int mp3IsMono = 0;
int mp3SamplesPerFrame = 0;
-
+
/* copy out mp3 header from ring buffer */
uint8_t header[4];
for (c=0; c<4; c++) {
header[c] = swf->audio_fifo[(swf->audio_in_pos+outSize+c) % AUDIO_FIFO_SIZE];
}
-
+
if ( swf_mp3_info(header,&mp3FrameSize,&mp3SamplesPerFrame,&mp3SampleRate,&mp3IsMono) ) {
if ( ( swf->audio_size-outSize ) >= mp3FrameSize ) {
outSize += mp3FrameSize;
}
} else {
/* invalid mp3 data, skip forward
- we need to do this since the Flash Player
+ we need to do this since the Flash Player
does not like custom headers */
swf->audio_in_pos ++;
swf->audio_size --;
goto retry_swf_audio_packet;
}
}
-
+
/* audio stream is behind video stream, bail */
if ( ( swf->sound_samples + outSamples + swf->samples_per_frame ) < swf->video_samples ) {
return 0;
}
}
- if ( swf->video_type == CODEC_ID_FLV1 ) {
+ 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, enc->width);
put_le16(pb, enc->height);
put_byte(pb, 0);
- put_byte(pb, SWF_VIDEO_CODEC_FLV1);
+ 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, 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, VIDEO_ID);
put_le16(pb, swf->video_frame_number++ );
put_buffer(pb, buf, size);
put_swf_end_tag(s);
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, 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 */
} else {
/* invalid codec */
}
-
+
swf->swf_frame_number ++;
swf->video_samples += swf->samples_per_frame;
put_byte(pb,swf->audio_fifo[(swf->audio_in_pos+c) % AUDIO_FIFO_SIZE]);
}
put_swf_end_tag(s);
-
+
/* update FIFO */
swf->sound_samples += outSamples;
swf->audio_in_pos += outSize;
/* 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,
+static int swf_write_audio(AVFormatContext *s,
AVCodecContext *enc, const uint8_t *buf, int size)
{
SWFContext *swf = s->priv_data;
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 */
url_fseek(pb, swf->duration_pos, SEEK_SET);
put_le16(pb, video_enc->frame_number);
}
-
+
av_free(swf->audio_fifo);
return 0;
/* 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
+ 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;
if (tag == MKBETAG('C', 'W', 'S', 0))
{
- av_log(s, AV_LOG_ERROR, "Compressed SWF format not supported\n");
+ av_log(s, AV_LOG_ERROR, "Compressed SWF format not supported\n");
return AVERROR_IO;
}
if (tag != MKBETAG('F', 'W', 'S', 0))
url_fskip(pb, len);
frame_rate = get_le16(pb);
get_le16(pb); /* frame count */
-
- /* The Flash Player converts 8.8 frame rates
- to milliseconds internally. Do the same to get
+
+ /* The Flash Player converts 8.8 frame rates
+ to milliseconds internally. Do the same to get
a correct framerate */
swf->ms_per_frame = ( 1000 * 256 ) / frame_rate;
swf->samples_per_frame = 0;
return AVERROR_IO;
}
if ( tag == TAG_VIDEOSTREAM && !vst) {
+ int codec_id;
swf->ch_id = get_le16(pb);
get_le16(pb);
get_le16(pb);
get_le16(pb);
get_byte(pb);
/* Check for FLV1 */
- if ( get_byte(pb) == SWF_VIDEO_CODEC_FLV1 ) {
+ codec_id = codec_get_id(swf_codec_tags, get_byte(pb));
+ if ( codec_id ) {
vst = av_new_stream(s, 0);
av_set_pts_info(vst, 24, 1, 1000); /* 24 bit pts in ms */
-
+
vst->codec->codec_type = CODEC_TYPE_VIDEO;
- vst->codec->codec_id = CODEC_ID_FLV1;
+ vst->codec->codec_id = codec_id;
if ( swf->samples_per_frame ) {
vst->codec->time_base.den = 1000. / swf->ms_per_frame;
vst->codec->time_base.num = 1;
get_le16(pb);
}
ast = av_new_stream(s, 1);
- av_set_pts_info(ast, 24, 1, 1000); /* 24 bit pts in ms */
if (!ast)
return -ENOMEM;
+ av_set_pts_info(ast, 24, 1, 1000); /* 24 bit pts in ms */
if (v & 0x01)
ast->codec->channels = 2;
}
ast->codec->codec_type = CODEC_TYPE_AUDIO;
ast->codec->codec_id = CODEC_ID_MP3;
+ ast->need_parsing = 1;
}
} else {
url_fskip(pb, len);
}
}
url_fseek(pb, firstTagOff, SEEK_SET);
-
+
return 0;
}
ByteIOContext *pb = &s->pb;
AVStream *st = 0;
int tag, len, i, frame;
-
+
for(;;) {
tag = get_swf_tag(pb, &len);
- if (tag < 0)
+ if (tag < 0)
return AVERROR_IO;
if (tag == TAG_VIDEOFRAME) {
for( i=0; i<s->nb_streams; i++ ) {
- st = s->streams[i];
+ st = s->streams[i];
if (st->id == 0) {
if ( get_le16(pb) == swf->ch_id ) {
frame = get_le16(pb);
continue;
}
}
- }
+ }
url_fskip(pb, len);
} else if (tag == TAG_STREAMBLOCK) {
for( i=0; i<s->nb_streams; i++ ) {
- st = s->streams[i];
+ st = s->streams[i];
if (st->id == 1) {
- av_get_packet(pb, pkt, len);
+ url_fskip(pb, 4);
+ av_get_packet(pb, pkt, len-4);
pkt->stream_index = st->index;
return pkt->size;
}
return 0;
}
-static AVInputFormat swf_iformat = {
+#ifdef CONFIG_SWF_DEMUXER
+AVInputFormat swf_demuxer = {
"swf",
"Flash format",
sizeof(SWFContext),
swf_read_packet,
swf_read_close,
};
-
-#ifdef CONFIG_MUXERS
-static AVOutputFormat swf_oformat = {
+#endif
+#ifdef CONFIG_SWF_MUXER
+AVOutputFormat swf_muxer = {
"swf",
"Flash format",
"application/x-shockwave-flash",
swf_write_packet,
swf_write_trailer,
};
-#endif //CONFIG_MUXERS
-
-int swf_init(void)
-{
- av_register_input_format(&swf_iformat);
-#ifdef CONFIG_MUXERS
- av_register_output_format(&swf_oformat);
-#endif //CONFIG_MUXERS
- return 0;
-}
+#endif
projects / ffmpeg / blobdiff