*/
#include "libavutil/attributes.h"
+#include "libavutil/thread.h"
#define BITSTREAM_READER_LE
#include "avcodec.h"
/* Indeo 2 codes are in range 0x01..0x7F and 0x81..0x90 */
static inline int ir2_get_code(GetBitContext *gb)
{
- return get_vlc2(gb, ir2_vlc.table, CODE_VLC_BITS, 1) + 1;
+ return get_vlc2(gb, ir2_vlc.table, CODE_VLC_BITS, 1);
}
static int ir2_decode_plane(Ir2Context *ctx, int width, int height, uint8_t *dst,
return buf_size;
}
+static av_cold void ir2_init_static(void)
+{
+ INIT_VLC_STATIC_FROM_LENGTHS(&ir2_vlc, CODE_VLC_BITS, IR2_CODES,
+ &ir2_tab[0][1], 2, &ir2_tab[0][0], 2, 1,
+ 0, INIT_VLC_OUTPUT_LE, 1 << CODE_VLC_BITS);
+}
+
static av_cold int ir2_decode_init(AVCodecContext *avctx)
{
+ static AVOnce init_static_once = AV_ONCE_INIT;
Ir2Context * const ic = avctx->priv_data;
ic->avctx = avctx;
if (!ic->picture)
return AVERROR(ENOMEM);
- INIT_LE_VLC_STATIC(&ir2_vlc, CODE_VLC_BITS, IR2_CODES,
- &ir2_codes[0][1], 4, 2,
- &ir2_codes[0][0], 4, 2, 1 << CODE_VLC_BITS);
+ ff_thread_once(&init_static_once, ir2_init_static);
return 0;
}
return 0;
}
-AVCodec ff_indeo2_decoder = {
+const AVCodec ff_indeo2_decoder = {
.name = "indeo2",
.long_name = NULL_IF_CONFIG_SMALL("Intel Indeo 2"),
.type = AVMEDIA_TYPE_VIDEO,
.close = ir2_decode_end,
.decode = ir2_decode_frame,
.capabilities = AV_CODEC_CAP_DR1,
+ .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
};