* ATI VCR1 codec
* Copyright (c) 2003 Michael Niedermayer
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-
+
/**
- * @file vcr1.c
+ * @file
* ati vcr1 codec.
*/
-
+
#include "avcodec.h"
-#include "mpegvideo.h"
+#include "dsputil.h"
//#undef NDEBUG
//#include <assert.h>
+/* Disable the encoder. */
+#undef CONFIG_VCR1_ENCODER
+#define CONFIG_VCR1_ENCODER 0
+
typedef struct VCR1Context{
AVCodecContext *avctx;
AVFrame picture;
int offset[4];
} VCR1Context;
-static int decode_frame(AVCodecContext *avctx,
+static int decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
VCR1Context * const a = avctx->priv_data;
AVFrame *picture = data;
AVFrame * const p= (AVFrame*)&a->picture;
- uint8_t *bytestream= buf;
+ const uint8_t *bytestream= buf;
int i, x, y;
- *data_size = 0;
-
- /* special case for last picture */
- if (buf_size == 0) {
- return 0;
- }
-
if(p->data[0])
avctx->release_buffer(avctx, p);
p->reference= 0;
if(avctx->get_buffer(avctx, p) < 0){
- fprintf(stderr, "get_buffer() failed\n");
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
- p->pict_type= I_TYPE;
+ p->pict_type= AV_PICTURE_TYPE_I;
p->key_frame= 1;
for(i=0; i<16; i++){
a->delta[i]= *(bytestream++);
bytestream++;
}
-
+
for(y=0; y<avctx->height; y++){
int offset;
uint8_t *luma= &a->picture.data[0][ y*a->picture.linesize[0] ];
for(i=0; i<4; i++)
a->offset[i]= *(bytestream++);
- offset= a->offset[0];
+ offset= a->offset[0] - a->delta[ bytestream[2]&0xF ];
for(x=0; x<avctx->width; x+=4){
luma[0]=( offset += a->delta[ bytestream[2]&0xF ]);
luma[1]=( offset += a->delta[ bytestream[2]>>4 ]);
luma[2]=( offset += a->delta[ bytestream[0]&0xF ]);
luma[3]=( offset += a->delta[ bytestream[0]>>4 ]);
luma += 4;
-
- *(cb++) = bytestream[1];
- *(cr++) = bytestream[3];
-
+
+ *(cb++) = bytestream[3];
+ *(cr++) = bytestream[1];
+
bytestream+= 4;
}
}else{
- offset= a->offset[y&3];
+ offset= a->offset[y&3] - a->delta[ bytestream[2]&0xF ];
for(x=0; x<avctx->width; x+=8){
luma[0]=( offset += a->delta[ bytestream[2]&0xF ]);
*picture= *(AVFrame*)&a->picture;
*data_size = sizeof(AVPicture);
- emms_c();
-
return buf_size;
}
-#if 0
+#if CONFIG_VCR1_ENCODER
static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
VCR1Context * const a = avctx->priv_data;
AVFrame *pict = data;
AVFrame * const p= (AVFrame*)&a->picture;
int size;
- int mb_x, mb_y;
*p = *pict;
- p->pict_type= I_TYPE;
+ p->pict_type= AV_PICTURE_TYPE_I;
p->key_frame= 1;
- emms_c();
-
- align_put_bits(&a->pb);
+ avpriv_align_put_bits(&a->pb);
while(get_bit_count(&a->pb)&31)
put_bits(&a->pb, 8, 0);
-
+
size= get_bit_count(&a->pb)/32;
-
+
return size*4;
}
#endif
-static void common_init(AVCodecContext *avctx){
+static av_cold void common_init(AVCodecContext *avctx){
VCR1Context * const a = avctx->priv_data;
avctx->coded_frame= (AVFrame*)&a->picture;
a->avctx= avctx;
}
-static int decode_init(AVCodecContext *avctx){
- VCR1Context * const a = avctx->priv_data;
- AVFrame *p= (AVFrame*)&a->picture;
- int i;
-
+static av_cold int decode_init(AVCodecContext *avctx){
+
common_init(avctx);
-
+
avctx->pix_fmt= PIX_FMT_YUV410P;
return 0;
}
-static int encode_init(AVCodecContext *avctx){
- VCR1Context * const a = avctx->priv_data;
- int i;
-
- common_init(avctx);
-
+static av_cold int decode_end(AVCodecContext *avctx){
+ VCR1Context *s = avctx->priv_data;
+
+ if (s->picture.data[0])
+ avctx->release_buffer(avctx, &s->picture);
+
return 0;
}
-static int decode_end(AVCodecContext *avctx){
- VCR1Context * const a = avctx->priv_data;
+#if CONFIG_VCR1_ENCODER
+static av_cold int encode_init(AVCodecContext *avctx){
- avcodec_default_free_buffers(avctx);
+ common_init(avctx);
return 0;
}
+#endif
-AVCodec vcr1_decoder = {
- "vcr1",
- CODEC_TYPE_VIDEO,
- CODEC_ID_VCR1,
- sizeof(VCR1Context),
- decode_init,
- NULL,
- decode_end,
- decode_frame,
- CODEC_CAP_DR1,
-};
-#if 0
-#ifdef CONFIG_ENCODERS
-
-AVCodec vcr1_encoder = {
- "vcr1",
- CODEC_TYPE_VIDEO,
- CODEC_ID_VCR1,
- sizeof(VCR1Context),
- encode_init,
- encode_frame,
- //encode_end,
+AVCodec ff_vcr1_decoder = {
+ .name = "vcr1",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_VCR1,
+ .priv_data_size = sizeof(VCR1Context),
+ .init = decode_init,
+ .close = decode_end,
+ .decode = decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("ATI VCR1"),
};
-#endif //CONFIG_ENCODERS
+#if CONFIG_VCR1_ENCODER
+AVCodec ff_vcr1_encoder = {
+ .name = "vcr1",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_VCR1,
+ .priv_data_size = sizeof(VCR1Context),
+ .init = encode_init,
+ .encode = encode_frame,
+ .long_name = NULL_IF_CONFIG_SMALL("ATI VCR1"),
+};
#endif
projects / ffmpeg / blobdiff