void *avi_converter_from_mjpeg(AviMovie *movie, int stream, unsigned char *buffer, size_t *size)
{
int deint;
unsigned char *buf;
(void)stream; /* unused */
buf = imb_alloc_pixels(movie->header->Height, movie->header->Width, 3, sizeof(unsigned char), "avi.avi_converter_from_mjpeg 1");
if (!buf) {
return NULL;
}
deint = Decode_JPEG(buffer, buf, movie->header->Width, movie->header->Height, *size);
MEM_freeN(buffer);
if (deint) {
buffer = imb_alloc_pixels(movie->header->Height, movie->header->Width, 3, sizeof(unsigned char), "avi.avi_converter_from_mjpeg 2");
if (buffer) {
interlace(buffer, buf, movie->header->Width, movie->header->Height);
}
MEM_freeN(buf);
buf = buffer;
}
return buf;
}
static int check_and_decode_jpeg(unsigned char *inbuf, unsigned char *outbuf, int width, int height, int bufsize) {
/* JPEG's are always multiples of 16, extra is cropped out AVI's */
if ((width&0xF) || (height&0xF)) {
int i, rrowstride, jrowstride;
int jwidth= PADUP(width, 16);
int jheight= PADUP(height, 16);
unsigned char *tmpbuf= MEM_mallocN(jwidth*jheight*3, "avi.check_and_decode_jpeg");
int ret= Decode_JPEG(inbuf, tmpbuf, jwidth, jheight, bufsize);
/* crop the tmpbuf into the real buffer */
rrowstride= width*3;
jrowstride= jwidth*3;
for (i=0; i<height; i++)
memcpy(&outbuf[i*rrowstride], &tmpbuf[i*jrowstride], rrowstride);
MEM_freeN(tmpbuf);
return ret;
} else {
return Decode_JPEG(inbuf, outbuf, width, height, bufsize);
}
}
void *avi_converter_from_mjpeg(AviMovie *movie, int stream, unsigned char *buffer, int *size)
{
int deint;
unsigned char *buf;
(void)stream; /* unused */
buf = MEM_mallocN(movie->header->Height * movie->header->Width * 3, "avi.avi_converter_from_mjpeg 1");
deint = Decode_JPEG(buffer, buf, movie->header->Width, movie->header->Height, *size);
MEM_freeN(buffer);
if (deint) {
buffer = MEM_mallocN(movie->header->Height * movie->header->Width * 3, "avi.avi_converter_from_mjpeg 2");
interlace(buffer, buf, movie->header->Width, movie->header->Height);
MEM_freeN(buf);
buf = buffer;
}
return buf;
}
