* Cirrus Logic AccuPak (CLJR) codec
* Copyright (c) 2003 Alex Beregszaszi
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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,
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-
+
/**
- * @file cljr.c
+ * @file libavcodec/cljr.c
* Cirrus Logic AccuPak codec.
*/
-
+
#include "avcodec.h"
-#include "mpegvideo.h"
+#include "dsputil.h"
+#include "get_bits.h"
+
+/* Disable the encoder. */
+#undef CONFIG_CLJR_ENCODER
+#define CONFIG_CLJR_ENCODER 0
typedef struct CLJRContext{
AVCodecContext *avctx;
GetBitContext gb;
} CLJRContext;
-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;
CLJRContext * const a = avctx->priv_data;
AVFrame *picture = data;
AVFrame * const p= (AVFrame*)&a->picture;
- uint8_t *bytestream= buf;
- int i, x, y;
-
- *data_size = 0;
-
- /* special case for last picture */
- if (buf_size == 0) {
- return 0;
- }
+ int x, y;
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= FF_I_TYPE;
p->key_frame= 1;
init_get_bits(&a->gb, buf, buf_size);
for(y=0; y<avctx->height; y++){
- int offset;
uint8_t *luma= &a->picture.data[0][ y*a->picture.linesize[0] ];
- uint8_t *cb= &a->picture.data[1][ (y>>2)*a->picture.linesize[1] ];
- uint8_t *cr= &a->picture.data[2][ (y>>2)*a->picture.linesize[2] ];
-
+ uint8_t *cb= &a->picture.data[1][ y*a->picture.linesize[1] ];
+ uint8_t *cr= &a->picture.data[2][ y*a->picture.linesize[2] ];
for(x=0; x<avctx->width; x+=4){
- luma[3] = get_bits(&a->gb, 5) << 3;
- luma[2] = get_bits(&a->gb, 5) << 3;
- luma[1] = get_bits(&a->gb, 5) << 3;
- luma[0] = get_bits(&a->gb, 5) << 3;
- luma+= 4;
- *(cb++) = get_bits(&a->gb, 6) << 2;
- *(cr++) = get_bits(&a->gb, 6) << 2;
+ luma[3] = get_bits(&a->gb, 5) << 3;
+ luma[2] = get_bits(&a->gb, 5) << 3;
+ luma[1] = get_bits(&a->gb, 5) << 3;
+ luma[0] = get_bits(&a->gb, 5) << 3;
+ luma+= 4;
+ *(cb++) = get_bits(&a->gb, 6) << 2;
+ *(cr++) = get_bits(&a->gb, 6) << 2;
}
}
*data_size = sizeof(AVPicture);
emms_c();
-
+
return buf_size;
}
-#if 0
+#if CONFIG_CLJR_ENCODER
static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
CLJRContext * 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= FF_I_TYPE;
p->key_frame= 1;
emms_c();
-
+
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){
CLJRContext * const a = avctx->priv_data;
avctx->coded_frame= (AVFrame*)&a->picture;
a->avctx= avctx;
}
-static int decode_init(AVCodecContext *avctx){
- CLJRContext * 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;
-}
+ avctx->pix_fmt= PIX_FMT_YUV411P;
-static int encode_init(AVCodecContext *avctx){
- CLJRContext * const a = avctx->priv_data;
- int i;
-
- common_init(avctx);
-
return 0;
}
-static int decode_end(AVCodecContext *avctx){
- CLJRContext * const a = avctx->priv_data;
+#if CONFIG_CLJR_ENCODER
+static av_cold int encode_init(AVCodecContext *avctx){
- avcodec_default_free_buffers(avctx);
+ common_init(avctx);
return 0;
}
+#endif
AVCodec cljr_decoder = {
"cljr",
sizeof(CLJRContext),
decode_init,
NULL,
- decode_end,
+ NULL,
decode_frame,
CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Cirrus Logic AccuPak"),
};
-#if 0
-#ifdef CONFIG_ENCODERS
+#if CONFIG_CLJR_ENCODER
AVCodec cljr_encoder = {
"cljr",
CODEC_TYPE_VIDEO,
- CODEC_ID_cljr,
+ CODEC_ID_CLJR,
sizeof(CLJRContext),
encode_init,
encode_frame,
//encode_end,
+ .long_name = NULL_IF_CONFIG_SMALL("Cirrus Logic AccuPak"),
};
-
-#endif //CONFIG_ENCODERS
#endif
projects / frescor / ffmpeg.git / blobdiff