* Quicktime Graphics (SMC) Video Decoder
* Copyright (C) 2003 the ffmpeg project
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg 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 FFmpeg; 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 smc.c
+ * @file
* QT SMC Video Decoder by Mike Melanson (melanson@pcisys.net)
* For more information about the SMC format, visit:
* http://www.pcisys.net/~melanson/codecs/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
+#include "libavutil/intreadwrite.h"
#include "avcodec.h"
-#include "dsputil.h"
#define CPAIR 2
#define CQUAD 4
typedef struct SmcContext {
AVCodecContext *avctx;
- DSPContext dsp;
AVFrame frame;
const unsigned char *buf;
unsigned char color_quads[COLORS_PER_TABLE * CQUAD];
unsigned char color_octets[COLORS_PER_TABLE * COCTET];
+ uint32_t pal[256];
} SmcContext;
#define GET_BLOCK_COUNT() \
int color_octet_index = 0;
/* make the palette available */
- memcpy(s->frame.data[1], s->avctx->palctrl->palette, AVPALETTE_SIZE);
- if (s->avctx->palctrl->palette_changed) {
- s->frame.palette_has_changed = 1;
- s->avctx->palctrl->palette_changed = 0;
- }
+ memcpy(s->frame.data[1], s->pal, AVPALETTE_SIZE);
chunk_size = AV_RB32(&s->buf[stream_ptr]) & 0x00FFFFFF;
stream_ptr += 4;
flags_a = xx012456, flags_b = xx89A37B
*/
/* build the color flags */
- color_flags_a = color_flags_b = 0;
color_flags_a =
- (s->buf[stream_ptr + 0] << 16) |
- ((s->buf[stream_ptr + 1] & 0xF0) << 8) |
- ((s->buf[stream_ptr + 2] & 0xF0) << 4) |
- ((s->buf[stream_ptr + 2] & 0x0F) << 4) |
- ((s->buf[stream_ptr + 3] & 0xF0) >> 4);
+ ((AV_RB16(s->buf + stream_ptr ) & 0xFFF0) << 8) |
+ (AV_RB16(s->buf + stream_ptr + 2) >> 4);
color_flags_b =
- (s->buf[stream_ptr + 4] << 16) |
- ((s->buf[stream_ptr + 5] & 0xF0) << 8) |
+ ((AV_RB16(s->buf + stream_ptr + 4) & 0xFFF0) << 8) |
((s->buf[stream_ptr + 1] & 0x0F) << 8) |
((s->buf[stream_ptr + 3] & 0x0F) << 4) |
(s->buf[stream_ptr + 5] & 0x0F);
}
}
-static int smc_decode_init(AVCodecContext *avctx)
+static av_cold int smc_decode_init(AVCodecContext *avctx)
{
SmcContext *s = avctx->priv_data;
s->avctx = avctx;
avctx->pix_fmt = PIX_FMT_PAL8;
- dsputil_init(&s->dsp, avctx);
s->frame.data[0] = NULL;
static int smc_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- const uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
SmcContext *s = avctx->priv_data;
+ const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, NULL);
s->buf = buf;
s->size = buf_size;
return -1;
}
+ if (pal) {
+ s->frame.palette_has_changed = 1;
+ memcpy(s->pal, pal, AVPALETTE_SIZE);
+ }
+
smc_decode_stream(s);
*data_size = sizeof(AVFrame);
return buf_size;
}
-static int smc_decode_end(AVCodecContext *avctx)
+static av_cold int smc_decode_end(AVCodecContext *avctx)
{
SmcContext *s = avctx->priv_data;
return 0;
}
-AVCodec smc_decoder = {
- "smc",
- CODEC_TYPE_VIDEO,
- CODEC_ID_SMC,
- sizeof(SmcContext),
- smc_decode_init,
- NULL,
- smc_decode_end,
- smc_decode_frame,
- CODEC_CAP_DR1,
+AVCodec ff_smc_decoder = {
+ .name = "smc",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_SMC,
+ .priv_data_size = sizeof(SmcContext),
+ .init = smc_decode_init,
+ .close = smc_decode_end,
+ .decode = smc_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("QuickTime Graphics (SMC)"),
};