/*
+ * Creative YUV (CYUV) Video Decoder
+ * by Mike Melanson (melanson@pcisys.net)
+ * based on "Creative YUV (CYUV) stream format for AVI":
+ * http://www.csse.monash.edu.au/~timf/videocodec/cyuv.txt
*
* Copyright (C) 2003 the ffmpeg project
*
- * 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
- *
- * Creative YUV (CYUV) Video Decoder
- * by Mike Melanson (melanson@pcisys.net)
- * based on "Creative YUV (CYUV) stream format for AVI":
- * http://www.csse.monash.edu.au/~timf/videocodec/cyuv.txt
- *
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file cyuv.c
+ * @file
* Creative YUV (CYUV) Video Decoder.
*/
-
+
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
-#include "common.h"
#include "avcodec.h"
#include "dsputil.h"
-#include "mpegvideo.h"
typedef struct CyuvDecodeContext {
AVFrame frame;
} CyuvDecodeContext;
-static int cyuv_decode_init(AVCodecContext *avctx)
+static av_cold int cyuv_decode_init(AVCodecContext *avctx)
{
CyuvDecodeContext *s = avctx->priv_data;
s->avctx = avctx;
s->width = avctx->width;
+ /* width needs to be divisible by 4 for this codec to work */
+ if (s->width & 0x3)
+ return -1;
s->height = avctx->height;
avctx->pix_fmt = PIX_FMT_YUV411P;
- avctx->has_b_frames = 0;
return 0;
}
-static int cyuv_decode_frame(AVCodecContext *avctx,
+static int cyuv_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;
CyuvDecodeContext *s=avctx->priv_data;
unsigned char *y_plane;
int v_ptr;
/* prediction error tables (make it clear that they are signed values) */
- signed char *y_table = buf + 0;
- signed char *u_table = buf + 16;
- signed char *v_table = buf + 32;
+ const signed char *y_table = (const signed char*)buf + 0;
+ const signed char *u_table = (const signed char*)buf + 16;
+ const signed char *v_table = (const signed char*)buf + 32;
unsigned char y_pred, u_pred, v_pred;
int stream_ptr;
unsigned char cur_byte;
int pixel_groups;
- *data_size = 0;
-
+ if (avctx->codec_id == CODEC_ID_AURA) {
+ y_table = u_table;
+ u_table = v_table;
+ }
/* sanity check the buffer size: A buffer has 3x16-bytes tables
* followed by (height) lines each with 3 bytes to represent groups
* of 4 pixels. Thus, the total size of the buffer ought to be:
* (3 * 16) + height * (width * 3 / 4) */
if (buf_size != 48 + s->height * (s->width * 3 / 4)) {
- av_log(avctx, AV_LOG_ERROR, "ffmpeg: cyuv: got a buffer with %d bytes when %d were expected\n",
- buf_size,
- 48 + s->height * (s->width * 3 / 4));
- return -1;
+ av_log(avctx, AV_LOG_ERROR, "got a buffer with %d bytes when %d were expected\n",
+ buf_size, 48 + s->height * (s->width * 3 / 4));
+ return -1;
}
/* pixel data starts 48 bytes in, after 3x16-byte tables */
stream_ptr = 48;
- if(s->frame.data[0])
+ if (s->frame.data[0])
avctx->release_buffer(avctx, &s->frame);
+ s->frame.buffer_hints = FF_BUFFER_HINTS_VALID;
s->frame.reference = 0;
- if(avctx->get_buffer(avctx, &s->frame) < 0) {
+ if (avctx->get_buffer(avctx, &s->frame) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
/* iterate through each line in the height */
for (y_ptr = 0, u_ptr = 0, v_ptr = 0;
- y_ptr < (s->height * s->frame.linesize[0]);
+ y_ptr < (s->height * s->frame.linesize[0]);
y_ptr += s->frame.linesize[0] - s->width,
u_ptr += s->frame.linesize[1] - s->width / 4,
v_ptr += s->frame.linesize[2] - s->width / 4) {
return buf_size;
}
-static int cyuv_decode_end(AVCodecContext *avctx)
+static av_cold int cyuv_decode_end(AVCodecContext *avctx)
{
-/* CyuvDecodeContext *s = avctx->priv_data;*/
+ CyuvDecodeContext *s = avctx->priv_data;
+
+ if (s->frame.data[0])
+ avctx->release_buffer(avctx, &s->frame);
return 0;
}
-AVCodec cyuv_decoder = {
+#if CONFIG_AURA_DECODER
+AVCodec ff_aura_decoder = {
+ "aura",
+ AVMEDIA_TYPE_VIDEO,
+ CODEC_ID_AURA,
+ sizeof(CyuvDecodeContext),
+ cyuv_decode_init,
+ NULL,
+ cyuv_decode_end,
+ cyuv_decode_frame,
+ CODEC_CAP_DR1,
+ NULL,
+ .long_name = NULL_IF_CONFIG_SMALL("Auravision AURA"),
+};
+#endif
+
+#if CONFIG_CYUV_DECODER
+AVCodec ff_cyuv_decoder = {
"cyuv",
- CODEC_TYPE_VIDEO,
+ AVMEDIA_TYPE_VIDEO,
CODEC_ID_CYUV,
sizeof(CyuvDecodeContext),
cyuv_decode_init,
NULL,
cyuv_decode_end,
cyuv_decode_frame,
- 0,
- NULL
+ CODEC_CAP_DR1,
+ NULL,
+ .long_name = NULL_IF_CONFIG_SMALL("Creative YUV (CYUV)"),
};
-
+#endif
projects / ffmpeg / blobdiff