#define TAG_STREAMHEAD2 45
#define TAG_VIDEOSTREAM 60
#define TAG_VIDEOFRAME 61
+#define TAG_FILEATTRIBUTES 69
#define TAG_LONG 0x100
#include <assert.h>
typedef struct {
-
+ int audio_stream_index;
offset_t duration_pos;
offset_t tag_pos;
int samples_per_frame;
int sound_samples;
- int video_samples;
int swf_frame_number;
int video_frame_number;
- int ms_per_frame;
- int ch_id;
+ int frame_rate;
int tag;
- uint8_t *audio_fifo;
+ uint8_t audio_fifo[AUDIO_FIFO_SIZE];
int audio_in_pos;
- int audio_out_pos;
- int audio_size;
int video_type;
int audio_type;
} SWFContext;
-static const CodecTag swf_codec_tags[] = {
+static const AVCodecTag 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},
- {11025, 12000, 8000, 0},
-};
-
-static const int sBitRates[2][3][15] = {
- { { 0, 32, 64, 96,128,160,192,224,256,288,320,352,384,416,448},
- { 0, 32, 48, 56, 64, 80, 96,112,128,160,192,224,256,320,384},
- { 0, 32, 40, 48, 56, 64, 80, 96,112,128,160,192,224,256,320}
- },
- { { 0, 32, 48, 56, 64, 80, 96,112,128,144,160,176,192,224,256},
- { 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96,112,128,144,160},
- { 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96,112,128,144,160}
- },
-};
-
-static const int sSamplesPerFrame[3][3] =
-{
- { 384, 1152, 1152 },
- { 384, 1152, 576 },
- { 384, 1152, 576 }
-};
-
-static const int sBitsPerSlot[3] = {
- 32,
- 8,
- 8
+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},
};
-static int swf_mp3_info(void *data, int *byteSize, int *samplesPerFrame, int *sampleRate, int *isMono )
-{
- uint8_t *dataTmp = (uint8_t *)data;
- uint32_t header = ( (uint32_t)dataTmp[0] << 24 ) | ( (uint32_t)dataTmp[1] << 16 ) | ( (uint32_t)dataTmp[2] << 8 ) | (uint32_t)dataTmp[3];
- int layerID = 3 - ((header >> 17) & 0x03);
- int bitRateID = ((header >> 12) & 0x0f);
- int sampleRateID = ((header >> 10) & 0x03);
- int bitRate = 0;
- int bitsPerSlot = sBitsPerSlot[layerID];
- int isPadded = ((header >> 9) & 0x01);
-
- if ( (( header >> 21 ) & 0x7ff) != 0x7ff ) {
- return 0;
- }
-
- *isMono = ((header >> 6) & 0x03) == 0x03;
-
- if ( (header >> 19 ) & 0x01 ) {
- *sampleRate = sSampleRates[0][sampleRateID];
- bitRate = sBitRates[0][layerID][bitRateID] * 1000;
- *samplesPerFrame = sSamplesPerFrame[0][layerID];
- } else {
- if ( (header >> 20) & 0x01 ) {
- *sampleRate = sSampleRates[1][sampleRateID];
- bitRate = sBitRates[1][layerID][bitRateID] * 1000;
- *samplesPerFrame = sSamplesPerFrame[1][layerID];
- } else {
- *sampleRate = sSampleRates[2][sampleRateID];
- bitRate = sBitRates[1][layerID][bitRateID] * 1000;
- *samplesPerFrame = sSamplesPerFrame[2][layerID];
- }
- }
-
- *byteSize = ( ( ( ( *samplesPerFrame * (bitRate / bitsPerSlot) ) / *sampleRate ) + isPadded ) );
-
- return 1;
-}
-
#ifdef CONFIG_MUXERS
static void put_swf_tag(AVFormatContext *s, int tag)
{
SWFContext *swf = s->priv_data;
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
swf->tag_pos = url_ftell(pb);
swf->tag = tag;
static void put_swf_end_tag(AVFormatContext *s)
{
SWFContext *swf = s->priv_data;
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
offset_t pos;
int tag_len, tag;
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);
+ 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);
+ 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);
+ put_bits(pb, 1, 1);
+ put_bits(pb, nbits, dx & mask);
+ put_bits(pb, nbits, dy & mask);
}
}
static int swf_write_header(AVFormatContext *s)
{
SWFContext *swf = s->priv_data;
- ByteIOContext *pb = &s->pb;
+ 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->ch_id = -1;
swf->audio_in_pos = 0;
- swf->audio_out_pos = 0;
- swf->audio_size = 0;
- swf->audio_fifo = av_malloc(AUDIO_FIFO_SIZE);
swf->sound_samples = 0;
- swf->video_samples = 0;
swf->swf_frame_number = 0;
swf->video_frame_number = 0;
audio_enc = NULL;
for(i=0;i<s->nb_streams;i++) {
enc = s->streams[i]->codec;
- if (enc->codec_type == CODEC_TYPE_AUDIO)
- audio_enc = enc;
- else {
- if ( enc->codec_id == CODEC_ID_VP6F ||
- enc->codec_id == CODEC_ID_FLV1 ||
- enc->codec_id == CODEC_ID_MJPEG ) {
+ 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(enc, AV_LOG_ERROR, "SWF only supports VP6, FLV1 and MJPEG\n");
+ av_log(s, AV_LOG_ERROR, "SWF muxer only supports VP6, FLV1 and MJPEG\n");
return -1;
}
}
}
if (!video_enc) {
- /* currenty, cannot work correctly if audio only */
+ /* currently, cannot work correctly if audio only */
swf->video_type = 0;
width = 320;
height = 200;
rate_base = video_enc->time_base.num;
}
- if (!audio_enc ) {
+ if (!audio_enc) {
swf->audio_type = 0;
- swf->samples_per_frame = ( 44100. * rate_base ) / rate;
+ 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;
+ swf->samples_per_frame = (audio_enc->sample_rate * rate_base) / rate;
}
+ is_avm2 = !strcmp("avm2", s->oformat->name);
+
put_tag(pb, "FWS");
- if ( video_enc && video_enc->codec_id == CODEC_ID_VP6F ) {
+ 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 ) {
+ } 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) */
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 ) {
+ 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 */
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);
+ 0, (int)(1.0 * (1 << FRAC_BITS)), 0, 0);
put_byte(pb, 0); /* no line style */
/* shape drawing */
put_swf_end_tag(s);
}
- if (audio_enc && audio_enc->codec_id == CODEC_ID_MP3 ) {
+ if (audio_enc && audio_enc->codec_id == CODEC_ID_MP3) {
int v;
/* start sound */
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_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);
+ 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_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);
+ put_flush_packet(s->pb);
return 0;
}
AVCodecContext *enc, const uint8_t *buf, int size)
{
SWFContext *swf = s->priv_data;
- ByteIOContext *pb = &s->pb;
- int c = 0;
- int outSize = 0;
- int outSamples = 0;
+ ByteIOContext *pb = s->pb;
/* Flash Player limit */
- if ( swf->swf_frame_number == 16000 ) {
+ if (swf->swf_frame_number == 16000) {
av_log(enc, AV_LOG_INFO, "warning: Flash Player limit of 16000 frames reached\n");
}
- if ( swf->audio_type ) {
- /* Prescan audio data for this swf frame */
-retry_swf_audio_packet:
- if ( ( swf->audio_size-outSize ) >= 4 ) {
- int mp3FrameSize = 0;
- 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;
- outSamples += mp3SamplesPerFrame;
- if ( ( swf->sound_samples + outSamples + swf->samples_per_frame ) < swf->video_samples ) {
- goto retry_swf_audio_packet;
- }
- }
- } else {
- /* invalid mp3 data, skip forward
- we need to do this since the Flash Player
- does not like custom headers */
- swf->audio_in_pos ++;
- swf->audio_size --;
- swf->audio_in_pos %= AUDIO_FIFO_SIZE;
- goto retry_swf_audio_packet;
- }
+ 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);
}
- /* audio stream is behind video stream, bail */
- if ( ( swf->sound_samples + outSamples + swf->samples_per_frame ) < swf->video_samples ) {
- return 0;
+ /* 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);
}
- }
-
- 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_swf_tag(s, TAG_JPEG2 | TAG_LONG);
- put_le16(pb, BITMAP_ID); /* ID of the image */
+ 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);
+ /* 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_end_tag(s);
- 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 */
- }
+ /* draw the shape */
- swf->swf_frame_number ++;
+ 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->video_samples += swf->samples_per_frame;
+ swf->swf_frame_number ++;
/* streaming sound always should be placed just before showframe tags */
- if ( outSize > 0 ) {
+ if (swf->audio_type && swf->audio_in_pos) {
put_swf_tag(s, TAG_STREAMBLOCK | TAG_LONG);
- put_le16(pb, outSamples);
- put_le16(pb, 0);
- for (c=0; c<outSize; c++) {
- put_byte(pb,swf->audio_fifo[(swf->audio_in_pos+c) % AUDIO_FIFO_SIZE]);
- }
+ 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 += outSamples;
- swf->audio_in_pos += outSize;
- swf->audio_size -= outSize;
- swf->audio_in_pos %= AUDIO_FIFO_SIZE;
+ 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);
+ put_flush_packet(s->pb);
return 0;
}
AVCodecContext *enc, const uint8_t *buf, int size)
{
SWFContext *swf = s->priv_data;
- int c = 0;
/* Flash Player limit */
- if ( swf->swf_frame_number == 16000 ) {
+ 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 == CODEC_ID_MP3 ) {
- for (c=0; c<size; c++) {
- swf->audio_fifo[(swf->audio_out_pos+c)%AUDIO_FIFO_SIZE] = buf[c];
- }
- swf->audio_size += size;
- swf->audio_out_pos += size;
- swf->audio_out_pos %= AUDIO_FIFO_SIZE;
+ 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 ) {
+ if (swf->video_type == 0) {
swf_write_video(s, enc, 0, 0);
}
static int swf_write_trailer(AVFormatContext *s)
{
SWFContext *swf = s->priv_data;
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
AVCodecContext *enc, *video_enc;
int file_size, i;
put_swf_tag(s, TAG_END);
put_swf_end_tag(s);
- put_flush_packet(&s->pb);
+ put_flush_packet(s->pb);
/* patch file size and number of frames if not streamed */
- if (!url_is_streamed(&s->pb) && video_enc) {
+ 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);
}
-
- av_free(swf->audio_fifo);
-
return 0;
}
#endif //CONFIG_MUXERS
static int swf_probe(AVProbeData *p)
{
/* check file header */
- if (p->buf_size <= 16)
- return 0;
if ((p->buf[0] == 'F' || p->buf[0] == 'C') && p->buf[1] == 'W' &&
p->buf[2] == 'S')
return AVPROBE_SCORE_MAX;
static int swf_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
- SWFContext *swf = 0;
- ByteIOContext *pb = &s->pb;
- int nbits, len, frame_rate, tag, v;
- offset_t firstTagOff;
- AVStream *ast = 0;
- AVStream *vst = 0;
-
- swf = av_malloc(sizeof(SWFContext));
- if (!swf)
- return -1;
- s->priv_data = swf;
+ 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))
- {
+ if (tag == MKBETAG('C', 'W', 'S', 0)) {
av_log(s, AV_LOG_ERROR, "Compressed SWF format not supported\n");
- return AVERROR_IO;
+ return AVERROR(EIO);
}
if (tag != MKBETAG('F', 'W', 'S', 0))
- return AVERROR_IO;
+ return AVERROR(EIO);
get_le32(pb);
/* skip rectangle size */
nbits = get_byte(pb) >> 3;
len = (4 * nbits - 3 + 7) / 8;
url_fskip(pb, len);
- frame_rate = get_le16(pb);
+ swf->frame_rate = get_le16(pb); /* 8.8 fixed */
get_le16(pb); /* frame count */
- /* 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;
- swf->ch_id = -1;
+ 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;
- firstTagOff = url_ftell(pb);
for(;;) {
tag = get_swf_tag(pb, &len);
- if (tag < 0) {
- if ( ast || vst ) {
- if ( vst && ast ) {
- vst->codec->time_base.den = ast->codec->sample_rate / swf->samples_per_frame;
- vst->codec->time_base.num = 1;
- }
- break;
- }
- av_log(s, AV_LOG_ERROR, "No media found in SWF\n");
- return AVERROR_IO;
- }
- if ( tag == TAG_VIDEOSTREAM && !vst) {
- swf->ch_id = get_le16(pb);
+ 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, 0);
- av_set_pts_info(vst, 24, 1, 1000); /* 24 bit pts in ms */
+ 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));
- if (swf->samples_per_frame) {
- vst->codec->time_base.den = 1000. / swf->ms_per_frame;
- vst->codec->time_base.num = 1;
- }
- } else if ( ( tag == TAG_STREAMHEAD || tag == TAG_STREAMHEAD2 ) && !ast) {
+ 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);
- if (len > 4)
- url_fskip(pb,len-4);
- /* if mp3 streaming found, OK */
- if ((v & 0x20) != 0) {
- ast = av_new_stream(s, 1);
- if (!ast)
- return -ENOMEM;
- av_set_pts_info(ast, 24, 1, 1000); /* 24 bit pts in ms */
-
- ast->codec->channels = 1 + (v&1);
-
- switch((v>> 2) & 0x03) {
- case 1:
- ast->codec->sample_rate = 11025;
- break;
- case 2:
- ast->codec->sample_rate = 22050;
- break;
- case 3:
- ast->codec->sample_rate = 44100;
- break;
- default:
- av_free(ast);
- return AVERROR_IO;
- }
- 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;
-}
-
-static int swf_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
- SWFContext *swf = s->priv_data;
- ByteIOContext *pb = &s->pb;
- AVStream *st = 0;
- int tag, len, i, frame;
-
- for(;;) {
- tag = get_swf_tag(pb, &len);
- if (tag < 0)
- return AVERROR_IO;
- if (tag == TAG_VIDEOFRAME) {
- for( i=0; i<s->nb_streams; i++ ) {
+ 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->id == 0) {
- if ( get_le16(pb) == swf->ch_id ) {
- frame = get_le16(pb);
- av_get_packet(pb, pkt, len-4);
- pkt->pts = frame * swf->ms_per_frame;
- pkt->stream_index = st->index;
- return pkt->size;
- } else {
- url_fskip(pb, len-2);
- continue;
- }
+ 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;
}
}
- url_fskip(pb, len);
} else if (tag == TAG_STREAMBLOCK) {
- for( i=0; i<s->nb_streams; i++ ) {
+ 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 == 1) {
- url_fskip(pb, 4);
- av_get_packet(pb, pkt, len-4);
- pkt->stream_index = st->index;
- return pkt->size;
- }
+ if (st->id == -2)
+ break;
}
- url_fskip(pb, len);
- } else {
- url_fskip(pb, len);
+ 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;
+ return 0;
}
#ifdef CONFIG_SWF_DEMUXER
swf_write_trailer,
};
#endif
+#ifdef CONFIG_AVM2_MUXER
+AVOutputFormat avm2_muxer = {
+ "avm2",
+ "Flash 9 (AVM2) format",
+ "application/x-shockwave-flash",
+ "swf",
+ sizeof(SWFContext),
+ CODEC_ID_MP3,
+ CODEC_ID_FLV1,
+ swf_write_header,
+ swf_write_packet,
+ swf_write_trailer,
+};
+#endif
projects / ffmpeg / blobdiff