/*
* MobiClip Video decoder
+ * Copyright (c) 2015-2016 Florian Nouwt
* Copyright (c) 2017 Adib Surani
* Copyright (c) 2020 Paul B Mahol
*
#include <inttypes.h>
#include "libavutil/avassert.h"
+#include "libavutil/thread.h"
#include "avcodec.h"
#include "bytestream.h"
10, 8, 8, 7, 8, 8, 8, 7, 8, 8, 8, 7, 7, 7, 7, 6,
};
-static const uint8_t mv_bits[16][10] =
+static const uint8_t mv_bits[2][16][10] =
{
- { 3, 4, 5, 5, 3, 5, 6, 6, 4, 1 },
- { 2, 3, 4, 5, 5, 2, 3, 3 },
- { 2, 4, 4, 3, 3, 4, 4, 2 },
- { 1, 4, 4, 3, 4, 4, 3 },
- { 3, 3, 2, 4, 5, 5, 3, 2 },
- { 3, 4, 4, 3, 3, 3, 3, 2 },
- { 1, 3, 3, 4, 4, 4, 5, 5 },
- { 1, 4, 4, 3, 3, 4, 4 },
- { 2, 4, 4, 3, 3, 4, 4, 2 },
- { 1, 3, 3, 4, 4, 4, 5, 5 },
- { 2, 3, 4, 4, 4, 4, 3, 2 },
- { 2, 3, 3, 4, 4, 3, 2 },
- { 1, 4, 4, 3, 3, 4, 4 },
- { 1, 4, 4, 3, 3, 4, 4 },
- { 2, 3, 3, 4, 4, 3, 2 },
- { 2, 3, 3, 3, 3, 2 },
-};
-
-static const uint8_t mv_syms[16][10] =
-{
- { 8, 2, 3, 6, 1, 7, 5, 4, 9, 0 },
- { 9, 2, 3, 5, 4, 1, 8, 0 },
- { 0, 5, 4, 2, 9, 3, 8, 1 },
- { 1, 5, 4, 2, 8, 3, 0 },
- { 2, 9, 8, 3, 5, 4, 0, 1 },
- { 3, 5, 4, 2, 9, 8, 0, 1 },
- { 1, 2, 0, 9, 8, 3, 5, 4 },
- { 1, 8, 5, 2, 0, 4, 3 },
- { 0, 5, 4, 2, 8, 3, 9, 1 },
- { 1, 2, 0, 9, 8, 3, 5, 4 },
- { 0, 3, 9, 8, 5, 4, 2, 1 },
- { 0, 4, 3, 8, 5, 2, 1 },
- { 1, 5, 4, 2, 0, 9, 3 },
- { 1, 9, 5, 2, 0, 4, 3 },
- { 0, 5, 3, 9, 4, 2, 1 },
- { 0, 4, 5, 3, 2, 1 },
-};
-
-static const uint8_t mv_bits_mods[16][10] =
-{
- { 2, 3, 3, 5, 5, 4, 4, 5, 5, 2 },
- { 2, 3, 4, 4, 3, 4, 4, 2 },
- { 3, 4, 4, 2, 4, 4, 3, 2 },
- { 1, 3, 4, 5, 5, 3, 3 },
- { 2, 4, 4, 3, 3, 4, 4, 2 },
- { 2, 3, 4, 4, 4, 4, 3, 2 },
- { 2, 3, 4, 4, 4, 4, 3, 2 },
- { 2, 2, 3, 4, 5, 5, 2 },
- { 2, 3, 4, 4, 3, 4, 4, 2 },
- { 2, 4, 4, 3, 4, 4, 3, 2 },
- { 2, 3, 3, 5, 5, 4, 3, 2 },
- { 2, 3, 4, 4, 3, 3, 2 },
- { 1, 4, 4, 3, 3, 4, 4 },
- { 2, 3, 4, 4, 3, 3, 2 },
- { 2, 3, 4, 4, 3, 3, 2 },
- { 3, 3, 2, 2, 3, 3 },
+ {
+ { 2, 3, 3, 5, 5, 4, 4, 5, 5, 2 },
+ { 2, 3, 4, 4, 3, 4, 4, 2 },
+ { 3, 4, 4, 2, 4, 4, 3, 2 },
+ { 1, 3, 4, 5, 5, 3, 3 },
+ { 2, 4, 4, 3, 3, 4, 4, 2 },
+ { 2, 3, 4, 4, 4, 4, 3, 2 },
+ { 2, 3, 4, 4, 4, 4, 3, 2 },
+ { 2, 2, 3, 4, 5, 5, 2 },
+ { 2, 3, 4, 4, 3, 4, 4, 2 },
+ { 2, 4, 4, 3, 4, 4, 3, 2 },
+ { 2, 3, 3, 5, 5, 4, 3, 2 },
+ { 2, 3, 4, 4, 3, 3, 2 },
+ { 1, 4, 4, 3, 3, 4, 4 },
+ { 2, 3, 4, 4, 3, 3, 2 },
+ { 2, 3, 4, 4, 3, 3, 2 },
+ { 3, 3, 2, 2, 3, 3 },
+ },
+ {
+ { 3, 4, 5, 5, 3, 5, 6, 6, 4, 1 },
+ { 2, 3, 4, 5, 5, 2, 3, 3 },
+ { 2, 4, 4, 3, 3, 4, 4, 2 },
+ { 1, 4, 4, 3, 4, 4, 3 },
+ { 3, 3, 2, 4, 5, 5, 3, 2 },
+ { 3, 4, 4, 3, 3, 3, 3, 2 },
+ { 1, 3, 3, 4, 4, 4, 5, 5 },
+ { 1, 4, 4, 3, 3, 4, 4 },
+ { 2, 4, 4, 3, 3, 4, 4, 2 },
+ { 1, 3, 3, 4, 4, 4, 5, 5 },
+ { 2, 3, 4, 4, 4, 4, 3, 2 },
+ { 2, 3, 3, 4, 4, 3, 2 },
+ { 1, 4, 4, 3, 3, 4, 4 },
+ { 1, 4, 4, 3, 3, 4, 4 },
+ { 2, 3, 3, 4, 4, 3, 2 },
+ { 2, 3, 3, 3, 3, 2 },
+ }
};
-static const uint8_t mv_syms_mods[16][10] =
+static const uint8_t mv_syms[2][16][10] =
{
- { 1, 8, 9, 4, 3, 2, 7, 5, 6, 0 },
- { 0, 9, 5, 4, 2, 3, 8, 1 },
- { 3, 9, 5, 0, 4, 8, 2, 1 },
- { 1, 3, 4, 8, 5, 2, 0 },
- { 0, 5, 4, 8, 2, 3, 9, 1 },
- { 0, 3, 5, 9, 4, 8, 2, 1 },
- { 0, 3, 9, 5, 8, 4, 2, 1 },
- { 0, 2, 3, 4, 8, 5, 1 },
- { 0, 3, 8, 4, 2, 5, 9, 1 },
- { 2, 8, 9, 3, 5, 4, 0, 1 },
- { 0, 4, 3, 8, 9, 5, 2, 1 },
- { 0, 4, 8, 5, 3, 2, 1 },
- { 1, 9, 4, 2, 0, 5, 3 },
- { 2, 4, 9, 5, 3, 0, 1 },
- { 0, 4, 9, 5, 3, 2, 1 },
- { 5, 4, 1, 0, 3, 2 },
+ {
+ { 1, 8, 9, 4, 3, 2, 7, 5, 6, 0 },
+ { 0, 9, 5, 4, 2, 3, 8, 1 },
+ { 3, 9, 5, 0, 4, 8, 2, 1 },
+ { 1, 3, 4, 8, 5, 2, 0 },
+ { 0, 5, 4, 8, 2, 3, 9, 1 },
+ { 0, 3, 5, 9, 4, 8, 2, 1 },
+ { 0, 3, 9, 5, 8, 4, 2, 1 },
+ { 0, 2, 3, 4, 8, 5, 1 },
+ { 0, 3, 8, 4, 2, 5, 9, 1 },
+ { 2, 8, 9, 3, 5, 4, 0, 1 },
+ { 0, 4, 3, 8, 9, 5, 2, 1 },
+ { 0, 4, 8, 5, 3, 2, 1 },
+ { 1, 9, 4, 2, 0, 5, 3 },
+ { 2, 4, 9, 5, 3, 0, 1 },
+ { 0, 4, 9, 5, 3, 2, 1 },
+ { 5, 4, 1, 0, 3, 2 },
+ },
+ {
+ { 8, 2, 3, 6, 1, 7, 5, 4, 9, 0 },
+ { 9, 2, 3, 5, 4, 1, 8, 0 },
+ { 0, 5, 4, 2, 9, 3, 8, 1 },
+ { 1, 5, 4, 2, 8, 3, 0 },
+ { 2, 9, 8, 3, 5, 4, 0, 1 },
+ { 3, 5, 4, 2, 9, 8, 0, 1 },
+ { 1, 2, 0, 9, 8, 3, 5, 4 },
+ { 1, 8, 5, 2, 0, 4, 3 },
+ { 0, 5, 4, 2, 8, 3, 9, 1 },
+ { 1, 2, 0, 9, 8, 3, 5, 4 },
+ { 0, 3, 9, 8, 5, 4, 2, 1 },
+ { 0, 4, 3, 8, 5, 2, 1 },
+ { 1, 5, 4, 2, 0, 9, 3 },
+ { 1, 9, 5, 2, 0, 4, 3 },
+ { 0, 5, 3, 9, 4, 2, 1 },
+ { 0, 4, 5, 3, 2, 1 },
+ }
};
typedef struct BlockXY {
static VLC rl_vlc[2];
static VLC mv_vlc[2][16];
+static av_cold void mobiclip_init_static(void)
+{
+ INIT_VLC_STATIC_FROM_LENGTHS(&rl_vlc[0], MOBI_RL_VLC_BITS, 104,
+ bits0, sizeof(*bits0),
+ syms0, sizeof(*syms0), sizeof(*syms0),
+ 0, 0, 1 << MOBI_RL_VLC_BITS);
+ INIT_VLC_STATIC_FROM_LENGTHS(&rl_vlc[1], MOBI_RL_VLC_BITS, 104,
+ bits0, sizeof(*bits0),
+ syms1, sizeof(*syms1), sizeof(*syms1),
+ 0, 0, 1 << MOBI_RL_VLC_BITS);
+ for (int i = 0; i < 2; i++) {
+ static VLC_TYPE vlc_buf[2 * 16 << MOBI_MV_VLC_BITS][2];
+ for (int j = 0; j < 16; j++) {
+ mv_vlc[i][j].table = &vlc_buf[(16 * i + j) << MOBI_MV_VLC_BITS];
+ mv_vlc[i][j].table_allocated = 1 << MOBI_MV_VLC_BITS;
+ ff_init_vlc_from_lengths(&mv_vlc[i][j], MOBI_MV_VLC_BITS, mv_len[j],
+ mv_bits[i][j], sizeof(*mv_bits[i][j]),
+ mv_syms[i][j], sizeof(*mv_syms[i][j]), sizeof(*mv_syms[i][j]),
+ 0, INIT_VLC_USE_NEW_STATIC, NULL);
+ }
+ }
+}
+
static av_cold int mobiclip_init(AVCodecContext *avctx)
{
+ static AVOnce init_static_once = AV_ONCE_INIT;
MobiClipContext *s = avctx->priv_data;
if (avctx->width & 15 || avctx->height & 15) {
return AVERROR(ENOMEM);
}
- INIT_VLC_STATIC_FROM_LENGTHS(&rl_vlc[0], MOBI_RL_VLC_BITS, 104,
- bits0, sizeof(*bits0),
- syms0, sizeof(*syms0), sizeof(*syms0),
- 0, 0, 1 << MOBI_RL_VLC_BITS);
- INIT_VLC_STATIC_FROM_LENGTHS(&rl_vlc[1], MOBI_RL_VLC_BITS, 104,
- bits0, sizeof(*bits0),
- syms1, sizeof(*syms1), sizeof(*syms1),
- 0, 0, 1 << MOBI_RL_VLC_BITS);
- for (int j = 0; j < 16; j++) {
- static VLC_TYPE vlc_buf[2 * 16 << MOBI_MV_VLC_BITS][2];
- mv_vlc[0][j].table = &vlc_buf[2 * j << MOBI_MV_VLC_BITS];
- mv_vlc[0][j].table_allocated = 1 << MOBI_MV_VLC_BITS;
- ff_init_vlc_from_lengths(&mv_vlc[0][j], MOBI_MV_VLC_BITS, mv_len[j],
- mv_bits_mods[j], sizeof(*mv_bits_mods[j]),
- mv_syms_mods[j], sizeof(*mv_syms_mods[j]),
- sizeof(*mv_syms_mods[j]), 0,
- INIT_VLC_USE_NEW_STATIC, NULL);
- mv_vlc[1][j].table = &vlc_buf[(2 * j + 1) << MOBI_MV_VLC_BITS];
- mv_vlc[1][j].table_allocated = 1 << MOBI_MV_VLC_BITS;
- ff_init_vlc_from_lengths(&mv_vlc[1][j], MOBI_MV_VLC_BITS, mv_len[j],
- mv_bits[j], sizeof(*mv_bits[j]),
- mv_syms[j], sizeof(*mv_syms[j]), sizeof(*mv_syms[j]),
- 0, INIT_VLC_USE_NEW_STATIC, NULL);
- }
+ ff_thread_once(&init_static_once, mobiclip_init_static);
return 0;
}
static uint8_t half3(int a, int b, int c)
{
- return ((a + b + b + c) * 2 / 4 + 1) / 2;;
+ return ((a + b + b + c) * 2 / 4 + 1) / 2;
}
static uint8_t pick_above(BlockXY bxy)
uint8_t *left = frame->data[plane] + ay * frame->linesize[plane] + FFMAX(ax - 1, 0);
int bottommost = frame->data[plane][(ay + size - 1) * frame->linesize[plane] + FFMAX(ax - 1, 0)];
int rightmost = frame->data[plane][FFMAX(ay - 1, 0) * frame->linesize[plane] + ax + size - 1];
- int avg = (bottommost + rightmost + 1) / 2 + 2 * get_se_golomb(gb);
+ int avg = (bottommost + rightmost + 1) / 2 + 2 * av_clip(get_se_golomb(gb), -(1<<16), 1<<16);
int r6 = adjust(avg - bottommost, size);
int r9 = adjust(avg - rightmost, size);
int shift = adjust(size, size) == 8 ? 3 : 2;
sidx += 6;
if (index > 0) {
- mv.x = mv.x + get_se_golomb(gb);
- mv.y = mv.y + get_se_golomb(gb);
+ mv.x = mv.x + (unsigned)get_se_golomb(gb);
+ mv.y = mv.y + (unsigned)get_se_golomb(gb);
}
if (mv.x >= INT_MAX || mv.y >= INT_MAX)
return AVERROR_INVALIDDATA;
return 0;
}
-AVCodec ff_mobiclip_decoder = {
+const AVCodec ff_mobiclip_decoder = {
.name = "mobiclip",
.long_name = NULL_IF_CONFIG_SMALL("MobiClip Video"),
.type = AVMEDIA_TYPE_VIDEO,
.flush = mobiclip_flush,
.close = mobiclip_close,
.capabilities = AV_CODEC_CAP_DR1,
- .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
+ .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
};