* LOCO codec
* Copyright (c) 2005 Konstantin Shishkov
*
- * 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
*/
/**
- * @file loco.c
+ * @file
* LOCO codec.
*/
#include "avcodec.h"
-#include "common.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "golomb.h"
+#include "mathops.h"
enum LOCO_MODE {LOCO_UNKN=0, LOCO_CYUY2=-1, LOCO_CRGB=-2, LOCO_CRGBA=-3, LOCO_CYV12=-4,
LOCO_YUY2=1, LOCO_UYVY=2, LOCO_RGB=3, LOCO_RGBA=4, LOCO_YV12=5};
}
static int loco_decode_plane(LOCOContext *l, uint8_t *data, int width, int height,
- int stride, uint8_t *buf, int buf_size, int step)
+ int stride, const uint8_t *buf, int buf_size, int step)
{
RICEContext rc;
int val;
data += stride;
}
- return ((get_bits_count(&rc.gb) + 7) >> 3);
+ return (get_bits_count(&rc.gb) + 7) >> 3;
}
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;
LOCOContext * const l = avctx->priv_data;
- AVFrame * const p= (AVFrame*)&l->pic;
+ AVFrame * const p = &l->pic;
int decoded;
if(p->data[0])
return buf_size;
}
-static int decode_init(AVCodecContext *avctx){
+static av_cold int decode_init(AVCodecContext *avctx){
LOCOContext * const l = avctx->priv_data;
int version;
avctx->extradata_size);
return -1;
}
- version = LE_32(avctx->extradata);
+ version = AV_RL32(avctx->extradata);
switch(version) {
case 1:
l->lossy = 0;
break;
case 2:
- l->lossy = LE_32(avctx->extradata + 8);
+ l->lossy = AV_RL32(avctx->extradata + 8);
break;
default:
- l->lossy = LE_32(avctx->extradata + 8);
- av_log(avctx, AV_LOG_INFO, "This is LOCO codec version %i, please upload file for study\n", version);
+ l->lossy = AV_RL32(avctx->extradata + 8);
+ av_log_ask_for_sample(avctx, "This is LOCO codec version %i.\n", version);
}
- l->mode = LE_32(avctx->extradata + 4);
+ l->mode = AV_RL32(avctx->extradata + 4);
switch(l->mode) {
case LOCO_CYUY2: case LOCO_YUY2: case LOCO_UYVY:
avctx->pix_fmt = PIX_FMT_YUV422P;
avctx->pix_fmt = PIX_FMT_YUV420P;
break;
case LOCO_CRGBA: case LOCO_RGBA:
- avctx->pix_fmt = PIX_FMT_RGBA32;
+ avctx->pix_fmt = PIX_FMT_RGB32;
break;
default:
av_log(avctx, AV_LOG_INFO, "Unknown colorspace, index = %i\n", l->mode);
return 0;
}
-AVCodec loco_decoder = {
- "loco",
- CODEC_TYPE_VIDEO,
- CODEC_ID_LOCO,
- sizeof(LOCOContext),
- decode_init,
- NULL,
- NULL,
- decode_frame,
- CODEC_CAP_DR1,
+static av_cold int decode_end(AVCodecContext *avctx){
+ LOCOContext * const l = avctx->priv_data;
+ AVFrame *pic = &l->pic;
+
+ if (pic->data[0])
+ avctx->release_buffer(avctx, pic);
+
+ return 0;
+}
+
+AVCodec ff_loco_decoder = {
+ .name = "loco",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_LOCO,
+ .priv_data_size = sizeof(LOCOContext),
+ .init = decode_init,
+ .close = decode_end,
+ .decode = decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("LOCO"),
};