* Escape 124 Video Decoder
* Copyright (C) 2008 Eli Friedman (eli.friedman@gmail.com)
*
- * 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
*/
#include "avcodec.h"
+#include "internal.h"
-#define ALT_BITSTREAM_READER_LE
-#include "bitstream.h"
+#define BITSTREAM_READER_LE
+#include "get_bits.h"
typedef union MacroBlock {
uint16_t pixels[4];
} Escape124Context;
static int can_safely_read(GetBitContext* gb, int bits) {
- return get_bits_count(gb) + bits <= gb->size_in_bits;
+ return get_bits_left(gb) >= bits;
}
/**
{
Escape124Context *s = avctx->priv_data;
- avctx->pix_fmt = PIX_FMT_RGB555;
+ avctx->pix_fmt = AV_PIX_FMT_RGB555;
s->num_superblocks = ((unsigned)avctx->width / 8) *
((unsigned)avctx->height / 8);
0x100, 0x200, 0x1000, 0x2000,
0x400, 0x800, 0x4000, 0x8000};
-/**
- * Decode a single frame
- * @param avctx decoder context
- * @param data decoded frame
- * @param data_size size of the decoded frame
- * @param buf input buffer
- * @param buf_size input buffer size
- * @return 0 success, -1 on error
- */
static int escape124_decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- const uint8_t *buf, int buf_size)
+ void *data, int *got_frame,
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
Escape124Context *s = avctx->priv_data;
GetBitContext gb;
if (!(frame_flags & 0x114) || !(frame_flags & 0x7800000)) {
av_log(NULL, AV_LOG_DEBUG, "Skipping frame\n");
- *data_size = sizeof(AVFrame);
+ *got_frame = 1;
*(AVFrame*)data = s->frame;
return frame_size;
}
new_frame.reference = 3;
- if (avctx->get_buffer(avctx, &new_frame)) {
+ if (ff_get_buffer(avctx, &new_frame)) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return -1;
}
avctx->release_buffer(avctx, &s->frame);
*(AVFrame*)data = s->frame = new_frame;
- *data_size = sizeof(AVFrame);
+ *got_frame = 1;
return frame_size;
}
-AVCodec escape124_decoder = {
- "escape124",
- CODEC_TYPE_VIDEO,
- CODEC_ID_ESCAPE124,
- sizeof(Escape124Context),
- escape124_decode_init,
- NULL,
- escape124_decode_close,
- escape124_decode_frame,
- CODEC_CAP_DR1,
- .long_name = "Escape 124",
+AVCodec ff_escape124_decoder = {
+ .name = "escape124",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_ESCAPE124,
+ .priv_data_size = sizeof(Escape124Context),
+ .init = escape124_decode_init,
+ .close = escape124_decode_close,
+ .decode = escape124_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Escape 124"),
};
-