#define V2_INTRA_CBPC_VLC_BITS 3
#define V2_MB_TYPE_VLC_BITS 7
#define MV_VLC_BITS 9
-#define V2_MV_VLC_BITS 9
#define TEX_VLC_BITS 9
#define DEFAULT_INTER_INDEX 3
static VLC v2_dc_chroma_vlc;
static VLC v2_intra_cbpc_vlc;
static VLC v2_mb_type_vlc;
-static VLC v2_mv_vlc;
VLC ff_inter_intra_vlc;
/* This is identical to H.263 except that its range is multiplied by 2. */
{
int code, val, sign, shift;
- code = get_vlc2(&s->gb, v2_mv_vlc.table, V2_MV_VLC_BITS, 2);
+ code = get_vlc2(&s->gb, ff_h263_mv_vlc.table, H263_MV_VLC_BITS, 2);
ff_dlog(s, "MV code %d at %d %d pred: %d\n", code, s->mb_x,s->mb_y, pred);
if (code < 0)
return 0xffff;
}
code = get_vlc2(&s->gb, ff_mb_non_intra_vlc[DEFAULT_INTER_INDEX].table, MB_NON_INTRA_VLC_BITS, 3);
- if (code < 0)
- return -1;
//s->mb_intra = (code & 0x40) ? 0 : 1;
s->mb_intra = (~code & 0x40) >> 6;
} else {
s->mb_intra = 1;
code = get_vlc2(&s->gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2);
- if (code < 0)
- return -1;
/* predict coded block pattern */
cbp = 0;
for(i=0;i<6;i++) {
s->rl_chroma_table_index = s->rl_table_index;
}
ff_h263_pred_motion(s, 0, 0, &mx, &my);
- if (ff_msmpeg4_decode_motion(s, &mx, &my) < 0)
- return -1;
+ ff_msmpeg4_decode_motion(s, &mx, &my);
s->mv_dir = MV_DIR_FORWARD;
s->mv_type = MV_TYPE_16X16;
s->mv[0][0][0] = mx;
{
MpegEncContext *s = avctx->priv_data;
static volatile int done = 0;
- int i, ret;
+ int ret;
MVTable *mv;
if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0)
ff_msmpeg4_common_init(s);
if (!done) {
- for(i=0;i<NB_RL_TABLES;i++) {
- ff_rl_init(&ff_rl_table[i], ff_static_rl_table_store[i]);
- }
- INIT_VLC_RL(ff_rl_table[0], 642);
- INIT_VLC_RL(ff_rl_table[1], 1104);
- INIT_VLC_RL(ff_rl_table[2], 554);
+ INIT_FIRST_VLC_RL(ff_rl_table[0], 642);
+ INIT_FIRST_VLC_RL(ff_rl_table[1], 1104);
+ INIT_FIRST_VLC_RL(ff_rl_table[2], 554);
INIT_VLC_RL(ff_rl_table[3], 940);
INIT_VLC_RL(ff_rl_table[4], 962);
- INIT_VLC_RL(ff_rl_table[5], 554);
+ /* ff_rl_table[5] coincides with ff_h263_rl_inter which has just been
+ * initialized in ff_h263_decode_init() above. So just copy the VLCs. */
+ av_assert1(ff_h263_rl_inter.rl_vlc[0]);
+ memcpy(ff_rl_table[5].rl_vlc, ff_h263_rl_inter.rl_vlc, sizeof(ff_rl_table[5].rl_vlc));
mv = &ff_mv_tables[0];
- INIT_VLC_STATIC(&mv->vlc, MV_VLC_BITS, mv->n + 1,
+ INIT_VLC_STATIC(&mv->vlc, MV_VLC_BITS, MSMPEG4_MV_TABLES_NB_ELEMS + 1,
mv->table_mv_bits, 1, 1,
mv->table_mv_code, 2, 2, 3714);
mv = &ff_mv_tables[1];
- INIT_VLC_STATIC(&mv->vlc, MV_VLC_BITS, mv->n + 1,
+ INIT_VLC_STATIC(&mv->vlc, MV_VLC_BITS, MSMPEG4_MV_TABLES_NB_ELEMS + 1,
mv->table_mv_bits, 1, 1,
mv->table_mv_code, 2, 2, 2694);
INIT_VLC_STATIC(&v2_mb_type_vlc, V2_MB_TYPE_VLC_BITS, 8,
&ff_v2_mb_type[0][1], 2, 1,
&ff_v2_mb_type[0][0], 2, 1, 128);
- INIT_VLC_STATIC(&v2_mv_vlc, V2_MV_VLC_BITS, 33,
- &ff_mvtab[0][1], 2, 1,
- &ff_mvtab[0][0], 2, 1, 538);
-
- INIT_VLC_STATIC(&ff_mb_non_intra_vlc[0], MB_NON_INTRA_VLC_BITS, 128,
- &ff_wmv2_inter_table[0][0][1], 8, 4,
- &ff_wmv2_inter_table[0][0][0], 8, 4, 1636);
- INIT_VLC_STATIC(&ff_mb_non_intra_vlc[1], MB_NON_INTRA_VLC_BITS, 128,
- &ff_wmv2_inter_table[1][0][1], 8, 4,
- &ff_wmv2_inter_table[1][0][0], 8, 4, 2648);
- INIT_VLC_STATIC(&ff_mb_non_intra_vlc[2], MB_NON_INTRA_VLC_BITS, 128,
- &ff_wmv2_inter_table[2][0][1], 8, 4,
- &ff_wmv2_inter_table[2][0][0], 8, 4, 1532);
- INIT_VLC_STATIC(&ff_mb_non_intra_vlc[3], MB_NON_INTRA_VLC_BITS, 128,
- &ff_wmv2_inter_table[3][0][1], 8, 4,
- &ff_wmv2_inter_table[3][0][0], 8, 4, 2488);
+
+ for (unsigned i = 0, offset = 0; i < 4; i++) {
+ static VLC_TYPE vlc_buf[1636 + 2648 + 1532 + 2488][2];
+ ff_mb_non_intra_vlc[i].table = &vlc_buf[offset];
+ ff_mb_non_intra_vlc[i].table_allocated = FF_ARRAY_ELEMS(vlc_buf) - offset;
+ init_vlc(&ff_mb_non_intra_vlc[i], MB_NON_INTRA_VLC_BITS, 128,
+ &ff_wmv2_inter_table[i][0][1], 8, 4,
+ &ff_wmv2_inter_table[i][0][0], 8, 4,
+ INIT_VLC_STATIC_OVERLONG);
+ offset += ff_mb_non_intra_vlc[i].table_size;
+ }
INIT_VLC_STATIC(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64,
&ff_msmp4_mb_i_table[0][1], 4, 2,
} else {
level = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3);
}
- if (level < 0){
- av_log(s->avctx, AV_LOG_ERROR, "illegal dc vlc\n");
- *dir_ptr = 0;
- return -1;
- }
if (level == DC_MAX) {
level = get_bits(&s->gb, 8);
return 0;
}
-int ff_msmpeg4_decode_motion(MpegEncContext * s,
- int *mx_ptr, int *my_ptr)
+void ff_msmpeg4_decode_motion(MpegEncContext *s, int *mx_ptr, int *my_ptr)
{
MVTable *mv;
int code, mx, my;
mv = &ff_mv_tables[s->mv_table_index];
code = get_vlc2(&s->gb, mv->vlc.table, MV_VLC_BITS, 2);
- if (code < 0){
- av_log(s->avctx, AV_LOG_ERROR, "illegal MV code at %d %d\n", s->mb_x, s->mb_y);
- return -1;
- }
- if (code == mv->n) {
+ if (code == MSMPEG4_MV_TABLES_NB_ELEMS) {
mx = get_bits(&s->gb, 6);
my = get_bits(&s->gb, 6);
} else {
my -= 64;
*mx_ptr = mx;
*my_ptr = my;
- return 0;
}
-AVCodec ff_msmpeg4v1_decoder = {
+const AVCodec ff_msmpeg4v1_decoder = {
.name = "msmpeg4v1",
.long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 1"),
.type = AVMEDIA_TYPE_VIDEO,
},
};
-AVCodec ff_msmpeg4v2_decoder = {
+const AVCodec ff_msmpeg4v2_decoder = {
.name = "msmpeg4v2",
.long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"),
.type = AVMEDIA_TYPE_VIDEO,
},
};
-AVCodec ff_msmpeg4v3_decoder = {
+const AVCodec ff_msmpeg4v3_decoder = {
.name = "msmpeg4",
.long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"),
.type = AVMEDIA_TYPE_VIDEO,
},
};
-AVCodec ff_wmv1_decoder = {
+const AVCodec ff_wmv1_decoder = {
.name = "wmv1",
.long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 7"),
.type = AVMEDIA_TYPE_VIDEO,
projects / ffmpeg / blobdiff