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Code Issues Releases Activity

.{Y,U,V} image2 support

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Originally committed as revision 3802 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2005-01-04 13:27:35 +00:00
parent 1b2dcdc1e0
commit 55cf195952
2 changed files with 90 additions and 28 deletions
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4
ffmpeg.c
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@ -83,8 +83,8 @@ static int nb_meta_data_maps;
static AVInputFormat *file_iformat;
static AVOutputFormat *file_oformat;
static AVImageFormat *image_format;
static int frame_width = 160;
static int frame_height = 128;
static int frame_width = 0;
static int frame_height = 0;
static float frame_aspect_ratio = 0;
static enum PixelFormat frame_pix_fmt = PIX_FMT_YUV420P;
static int frame_padtop = 0;

114
libavformat/img2.c
View File

@ -50,9 +50,35 @@ static const IdStrMap img_tags[] = {
{ CODEC_ID_MPEG2VIDEO, "mpg2-img"},
{ CODEC_ID_MPEG4 , "mpg4-img"},
{ CODEC_ID_FFV1 , "ffv1-img"},
{ CODEC_ID_RAWVIDEO , "y"},
{0, NULL}
};
static int sizes[][2] = {
{ 640, 480 },
{ 720, 480 },
{ 720, 576 },
{ 352, 288 },
{ 352, 240 },
{ 160, 128 },
{ 512, 384 },
{ 640, 352 },
{ 640, 240 },
};
static int infer_size(int *width_ptr, int *height_ptr, int size)
{
int i;
for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
if ((sizes[i][0] * sizes[i][1]) == size) {
*width_ptr = sizes[i][0];
*height_ptr = sizes[i][1];
return 0;
}
}
return -1;
}
static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
{
str= strrchr(str, '.');
@ -178,6 +204,11 @@ static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
st->codec.frame_rate_base = ap->frame_rate_base;
}
if(ap && ap->width && ap->height){
st->codec.width = ap->width;
st->codec.height= ap->height;
}
if (!s->is_pipe) {
if (find_image_range(&first_index, &last_index, s->path) < 0)
return AVERROR_IO;
@ -209,8 +240,10 @@ static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
{
VideoData *s = s1->priv_data;
char filename[1024];
int ret;
ByteIOContext f1, *f;
int i;
int size[3]={0}, ret[3]={0};
ByteIOContext f1[3], *f[3]= {&f1[0], &f1[1], &f1[2]};
AVCodecContext *codec= &s1->streams[0]->codec;
if (!s->is_pipe) {
/* loop over input */
@ -220,33 +253,44 @@ static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
if (get_frame_filename(filename, sizeof(filename),
s->path, s->img_number)<0 && s->img_number > 1)
return AVERROR_IO;
f = &f1;
if (url_fopen(f, filename, URL_RDONLY) < 0)
return AVERROR_IO;
for(i=0; i<3; i++){
if (url_fopen(f[i], filename, URL_RDONLY) < 0)
return AVERROR_IO;
size[i]= url_filesize(url_fileno(f[i]));
if(codec->codec_id != CODEC_ID_RAWVIDEO)
break;
filename[ strlen(filename) - 1 ]= 'U' + i;
}
if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width)
infer_size(&codec->width, &codec->height, size[0]);
} else {
f = &s1->pb;
if (url_feof(f))
f[0] = &s1->pb;
if (url_feof(f[0]))
return AVERROR_IO;
size[0]= 4096;
}
if (s->is_pipe) {
av_new_packet(pkt, 4096);
}else{
av_new_packet(pkt, url_filesize(url_fileno(f)));
}
av_new_packet(pkt, size[0] + size[1] + size[2]);
pkt->stream_index = 0;
pkt->flags |= PKT_FLAG_KEY;
ret = get_buffer(f, pkt->data, pkt->size);
if (!s->is_pipe) {
url_fclose(f);
pkt->size= 0;
for(i=0; i<3; i++){
if(size[i]){
ret[i]= get_buffer(f[i], pkt->data + pkt->size, size[i]);
if (!s->is_pipe)
url_fclose(f[i]);
if(ret[i]>0)
pkt->size += ret[i];
}
}
if (ret <= 0) {
if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) {
av_free_packet(pkt);
return AVERROR_IO; /* signal EOF */
} else {
pkt->size = ret;
s->img_count++;
s->img_number++;
return 0;
@ -280,24 +324,42 @@ static int img_write_header(AVFormatContext *s)
static int img_write_packet(AVFormatContext *s, AVPacket *pkt)
{
VideoData *img = s->priv_data;
ByteIOContext pb1, *pb;
ByteIOContext pb1[3], *pb[3]= {&pb1[0], &pb1[1], &pb1[2]};
char filename[1024];
AVCodecContext *codec= &s->streams[ pkt->stream_index ]->codec;
int i;
if (!img->is_pipe) {
if (get_frame_filename(filename, sizeof(filename),
img->path, img->img_number) < 0 && img->img_number>1)
return AVERROR_IO;
pb = &pb1;
if (url_fopen(pb, filename, URL_WRONLY) < 0)
return AVERROR_IO;
for(i=0; i<3; i++){
if (url_fopen(pb[i], filename, URL_WRONLY) < 0)
return AVERROR_IO;
if(codec->codec_id != CODEC_ID_RAWVIDEO)
break;
filename[ strlen(filename) - 1 ]= 'U' + i;
}
} else {
pb = &s->pb;
pb[0] = &s->pb;
}
put_buffer(pb, pkt->data, pkt->size);
put_flush_packet(pb);
if(codec->codec_id == CODEC_ID_RAWVIDEO){
int size = (codec->width * codec->height)>>2;
put_buffer(pb[0], pkt->data , 4*size);
put_buffer(pb[1], pkt->data + 4*size, size);
put_buffer(pb[2], pkt->data + 5*size, size);
put_flush_packet(pb[1]);
put_flush_packet(pb[2]);
url_fclose(pb[1]);
url_fclose(pb[2]);
}else{
put_buffer(pb[0], pkt->data, pkt->size);
}
put_flush_packet(pb[0]);
if (!img->is_pipe) {
url_fclose(pb);
url_fclose(pb[0]);
}
img->img_number++;