#include <zlib.h>
#include "avcodec.h"
+#include "internal.h"
+#include "libavutil/common.h"
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;
}
- if (avctx->get_buffer(avctx, pic) < 0) {
- av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
- return AVERROR(ENOMEM);
- }
-
zret = inflateReset(zstream);
if (zret != Z_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not reset inflate: %d.\n", zret);
return AVERROR_INVALIDDATA;
}
+ if (ff_get_buffer(avctx, pic) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
+ return AVERROR(ENOMEM);
+ }
+
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
zret = inflate(zstream, Z_SYNC_FLUSH);
if (zret != Z_OK && zret != Z_STREAM_END) {
+ avctx->release_buffer(avctx, pic);
av_log(avctx, AV_LOG_ERROR,
"Inflate failed with return code: %d.\n", zret);
return AVERROR_INVALIDDATA;
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.
z_stream *zstream = &zc->zstream;
int zret;
- avctx->pix_fmt = PIX_FMT_UYVY422;
+ 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;
AVCodec ff_zerocodec_decoder = {
.type = AVMEDIA_TYPE_VIDEO,
.name = "zerocodec",
- .id = CODEC_ID_ZEROCODEC,
+ .id = AV_CODEC_ID_ZEROCODEC,
.priv_data_size = sizeof(ZeroCodecContext),
.init = zerocodec_decode_init,
.decode = zerocodec_decode_frame,