{
AVFrame *pic = avctx->coded_frame;
const uint8_t *src = avpkt->data;
- const uint8_t *srca = src + 2 * (avctx->height + 16) * avctx->width + 9;
+ const uint8_t *srca;
uint8_t *y, *u, *v, *a;
- int transparent = 0, i, j, k;
+ int transparent, interlaced = 1, skip[2], i, j, k;
if (pic->data[0])
avctx->release_buffer(avctx, pic);
- if (avpkt->size < 2 * avctx->width * (avctx->height + 16) + 4) {
+ if (!memcmp(&avctx->extradata[4], "APRGAPRG0001", 12) &&
+ avctx->extradata_size >= 24)
+ interlaced = avctx->extradata[19] != 1;
+ skip[0] = skip[1] = 16;
+ if (avctx->height == 486) {
+ skip[0] = 8;
+ skip[1] = 12;
+ }
+ if (avpkt->size < avctx->width * (2 * avctx->height + skip[0] + skip[1])
+ + 4 * interlaced) {
av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
return AVERROR(EINVAL);
}
- if (avpkt->size >= 4 * avctx->width * (avctx->height + 16) + 13)
- transparent = 1;
+ transparent = avctx->bits_per_coded_sample == 32 &&
+ avpkt->size >= (2 * avctx->height + skip[0] + skip[1]) *
+ 2 * avctx->width + 4 + 8 * interlaced;
+ srca = src + (2 * avctx->height + skip[0] + skip[1]) * avctx->width
+ + 5 + interlaced * 4;
pic->reference = 0;
pic->key_frame = 1;
pic->pict_type = AV_PICTURE_TYPE_I;
- for (i = 0; i < 2; i++) {
- src += avctx->width * 16;
- srca += avctx->width * 16;
+ if (!interlaced) {
+ src += avctx->width * skip[1];
+ srca += avctx->width * skip[1];
+ }
+
+ for (i = 0; i < interlaced + 1; i++) {
+ src += avctx->width * skip[i];
+ srca += avctx->width * skip[i];
y = pic->data[0] + i * pic->linesize[0];
u = pic->data[1] + i * pic->linesize[1];
v = pic->data[2] + i * pic->linesize[2];
a = pic->data[3] + i * pic->linesize[3];
- for (j = 0; j < (avctx->height + 1) >> 1; j++) {
- for (k = 0; k < (avctx->width + 1) >> 1; k++) {
+ for (j = 0; j < avctx->height >> interlaced; j++) {
+ for (k = 0; k < avctx->width >> 1; k++) {
u[ k ] = *src++;
y[2 * k ] = *src++;
a[2 * k ] = 0xFF - (transparent ? *srca++ : 0);
srca++;
}
- y += 2 * pic->linesize[0];
- u += 2 * pic->linesize[1];
- v += 2 * pic->linesize[2];
- a += 2 * pic->linesize[3];
+ y += (interlaced + 1) * pic->linesize[0];
+ u += (interlaced + 1) * pic->linesize[1];
+ v += (interlaced + 1) * pic->linesize[2];
+ a += (interlaced + 1) * pic->linesize[3];
}
src += 4;
srca += 4;