typedef struct {
AVFrame previous_frame;
z_stream zstream;
- int size;
} ZeroCodecContext;
static int zerocodec_decode_frame(AVCodecContext *avctx, void *data,
- int *data_size, AVPacket *avpkt)
+ int *got_frame, AVPacket *avpkt)
{
ZeroCodecContext *zc = avctx->priv_data;
AVFrame *pic = avctx->coded_frame;
av_log(avctx, AV_LOG_ERROR, "Missing reference frame.\n");
return AVERROR_INVALIDDATA;
}
+
+ prev += (avctx->height - 1) * prev_pic->linesize[0];
+
pic->key_frame = 0;
pic->pict_type = AV_PICTURE_TYPE_P;
}
zstream->next_in = avpkt->data;
zstream->avail_in = avpkt->size;
- dst = pic->data[0];
+ dst = pic->data[0] + (avctx->height - 1) * pic->linesize[0];
/**
* ZeroCodec has very simple interframe compression. If a value
for (j = 0; j < avctx->width << 1; j++)
dst[j] += prev[j] & -!dst[j];
- prev += prev_pic->linesize[0];
- dst += pic->linesize[0];
+ prev -= prev_pic->linesize[0];
+ dst -= pic->linesize[0];
}
/* Release the previous buffer if need be */
if (prev_pic->data[0])
avctx->release_buffer(avctx, prev_pic);
- *data_size = sizeof(AVFrame);
+ *got_frame = 1;
*(AVFrame *)data = *pic;
/* Store the previous frame for use later.
avctx->pix_fmt = AV_PIX_FMT_UYVY422;
avctx->bits_per_raw_sample = 8;
- zc->size = avpicture_get_size(avctx->pix_fmt,
- avctx->width, avctx->height);
-
zstream->zalloc = Z_NULL;
zstream->zfree = Z_NULL;
zstream->opaque = Z_NULL;