unsigned char * buffer; /* block of memory for holding one frame */
int length; /* number of bytes in buffer */
int flip;
+ int interlace;
AVFrame pic; ///< AVCodecContext.coded_frame
int tff;
} RawVideoContext;
avctx->codec_tag == MKTAG(3, 0, 0, 0) || avctx->codec_tag == MKTAG('W','R','A','W'))
context->flip=1;
+ if(avctx->extradata_size >= 9 && avctx->extradata[4]+28 < avctx->extradata_size && !context->buffer && avctx->pix_fmt == PIX_FMT_UYVY422) {
+ int ndx = avctx->extradata[4] + 4;
+ context->interlace = !memcmp(avctx->extradata + ndx, "1:1(", 4);
+ if(context->interlace) {
+ context->buffer = av_malloc(context->length);
+ if (!context->buffer)
+ return AVERROR(ENOMEM);
+ context->tff = avctx->extradata[ndx + 24] == 1;
+ }
+ }
+
return 0;
}
if (context->buffer) {
int i;
uint8_t *dst = context->buffer;
- buf_size = context->length - AVPALETTE_SIZE;
- if (avctx->bits_per_coded_sample == 4){
- for(i=0; 2*i+1 < buf_size && i<avpkt->size; i++){
- dst[2*i+0]= buf[i]>>4;
- dst[2*i+1]= buf[i]&15;
+ if(avctx->pix_fmt == PIX_FMT_PAL8){
+ buf_size = context->length - AVPALETTE_SIZE;
+ if (avctx->bits_per_coded_sample == 4){
+ for(i=0; 2*i+1 < buf_size && i<avpkt->size; i++){
+ dst[2*i+0]= buf[i]>>4;
+ dst[2*i+1]= buf[i]&15;
+ }
+ linesize_align = 8;
+ } else {
+ av_assert0(avctx->bits_per_coded_sample == 2);
+ for(i=0; 4*i+3 < buf_size && i<avpkt->size; i++){
+ dst[4*i+0]= buf[i]>>6;
+ dst[4*i+1]= buf[i]>>4&3;
+ dst[4*i+2]= buf[i]>>2&3;
+ dst[4*i+3]= buf[i] &3;
+ }
+ linesize_align = 16;
}
- linesize_align = 8;
- } else {
- av_assert0(avctx->bits_per_coded_sample == 2);
- for(i=0; 4*i+3 < buf_size && i<avpkt->size; i++){
- dst[4*i+0]= buf[i]>>6;
- dst[4*i+1]= buf[i]>>4&3;
- dst[4*i+2]= buf[i]>>2&3;
- dst[4*i+3]= buf[i] &3;
+ } else if(context->interlace && avctx->pix_fmt == PIX_FMT_UYVY422) {
+ int x, y;
+ int true_height = buf_size / (2*avctx->width);
+ int tff = !!context->tff;
+ av_assert0(avctx->height * avctx->width * 2 == context->length);
+ if (buf_size < context->length) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid buffer size, packet size %d < context length %d\n", buf_size, context->length);
+ return AVERROR(EINVAL);
}
- linesize_align = 16;
- }
+ buf += (true_height - avctx->height)*avctx->width;
+ for(y = 0; y < avctx->height-1; y+=2) {
+ memcpy(dst + (y+ tff)*2*avctx->width, buf , 2*avctx->width);
+ memcpy(dst + (y+!tff)*2*avctx->width, buf + avctx->width*true_height+4, 2*avctx->width);
+ buf += 2*avctx->width;
+ }
+ }else
+ av_assert0(0);
buf= dst;
}