int planes;
uint8_t format;
AVFrame *p;
- int max;
int slice_height;
int nb_slices;
int correlate;
static av_cold int magy_encode_init(AVCodecContext *avctx)
{
MagicYUVContext *s = avctx->priv_data;
+ PutByteContext pb;
int i;
switch (avctx->pix_fmt) {
case MEDIAN: s->predict = median_predict; break;
}
+ avctx->extradata_size = 32;
+
+ avctx->extradata = av_mallocz(avctx->extradata_size +
+ AV_INPUT_BUFFER_PADDING_SIZE);
+
+ if (!avctx->extradata) {
+ av_log(avctx, AV_LOG_ERROR, "Could not allocate extradata.\n");
+ return AVERROR(ENOMEM);
+ }
+
+ bytestream2_init_writer(&pb, avctx->extradata, avctx->extradata_size);
+ bytestream2_put_le32(&pb, MKTAG('M', 'A', 'G', 'Y'));
+ bytestream2_put_le32(&pb, 32);
+ bytestream2_put_byte(&pb, 7);
+ bytestream2_put_byte(&pb, s->format);
+ bytestream2_put_byte(&pb, 12);
+ bytestream2_put_byte(&pb, 0);
+
+ bytestream2_put_byte(&pb, 0);
+ bytestream2_put_byte(&pb, 0);
+ bytestream2_put_byte(&pb, 32);
+ bytestream2_put_byte(&pb, 0);
+
+ bytestream2_put_le32(&pb, avctx->width);
+ bytestream2_put_le32(&pb, avctx->height);
+ bytestream2_put_le32(&pb, avctx->width);
+ bytestream2_put_le32(&pb, avctx->height);
+
return 0;
}
counts[i].value = 255 - i;
}
- magy_huffman_compute_bits(counts, he, 256, 16);
+ magy_huffman_compute_bits(counts, he, 256, 12);
calculate_codes(he);
bytestream2_init_writer(&pb, pkt->data, pkt->size);
bytestream2_put_le32(&pb, MKTAG('M', 'A', 'G', 'Y'));
- bytestream2_put_le32(&pb, 32);
- bytestream2_put_byte(&pb, 7);
+ bytestream2_put_le32(&pb, 32); // header size
+ bytestream2_put_byte(&pb, 7); // version
bytestream2_put_byte(&pb, s->format);
+ bytestream2_put_byte(&pb, 12); // max huffman length
+ bytestream2_put_byte(&pb, 0);
+
bytestream2_put_byte(&pb, 0);
bytestream2_put_byte(&pb, 0);
- bytestream2_put_le32(&pb, 0);
+ bytestream2_put_byte(&pb, 32); // coder type
+ bytestream2_put_byte(&pb, 0);
bytestream2_put_le32(&pb, avctx->width);
bytestream2_put_le32(&pb, avctx->height);