*
* msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at>
*/
+
+/**
+ * @file msmpeg4.c
+ * MSMPEG4 backend for ffmpeg encoder and decoder.
+ */
+
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
-//#define PRINT_MB
/*
* You can also call this codec : MPEG4 with a twist !
static void msmpeg4v2_encode_motion(MpegEncContext * s, int val);
static void init_h263_dc_for_msmpeg4(void);
static inline void msmpeg4_memsetw(short *tab, int val, int n);
+#ifdef CONFIG_ENCODERS
static int get_size_of_code(MpegEncContext * s, RLTable *rl, int last, int run, int level, int intra);
+#endif //CONFIG_ENCODERS
static int msmpeg4v12_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
static int msmpeg4v34_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
static int wmv2_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
-extern uint32_t inverse[256];
-
#ifdef DEBUG
int intra_count = 0;
#include "msmpeg4data.h"
+#ifdef CONFIG_ENCODERS //strangely gcc includes this even if its not references
static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2];
+#endif //CONFIG_ENCODERS
#ifdef STATS
if(s->msmpeg4_version>=4){
- ff_init_scantable(s, &s->intra_scantable , wmv1_scantable[1]);
- ff_init_scantable(s, &s->intra_h_scantable, wmv1_scantable[2]);
- ff_init_scantable(s, &s->intra_v_scantable, wmv1_scantable[3]);
- ff_init_scantable(s, &s->inter_scantable , wmv1_scantable[0]);
+ ff_init_scantable(s->dsp.idct_permutation, &s->intra_scantable , wmv1_scantable[1]);
+ ff_init_scantable(s->dsp.idct_permutation, &s->intra_h_scantable, wmv1_scantable[2]);
+ ff_init_scantable(s->dsp.idct_permutation, &s->intra_v_scantable, wmv1_scantable[3]);
+ ff_init_scantable(s->dsp.idct_permutation, &s->inter_scantable , wmv1_scantable[0]);
}
//Note the default tables are set in common_init in mpegvideo.c
}
}
+#ifdef CONFIG_ENCODERS
+
/* build the table which associate a (x,y) motion vector to a vlc */
static void init_mv_table(MVTable *tab)
{
void msmpeg4_encode_ext_header(MpegEncContext * s)
{
- put_bits(&s->pb, 5, s->frame_rate / FRAME_RATE_BASE); //yes 29.97 -> 29
+ put_bits(&s->pb, 5, s->avctx->frame_rate / s->avctx->frame_rate_base); //yes 29.97 -> 29
put_bits(&s->pb, 11, FFMIN(s->bit_rate/1024, 2047));
- if(s->msmpeg4_version<3)
- s->flipflop_rounding=0;
- else{
- s->flipflop_rounding=1;
+ if(s->msmpeg4_version>=3)
put_bits(&s->pb, 1, s->flipflop_rounding);
- }
+ else
+ assert(s->flipflop_rounding==0);
}
+#endif //CONFIG_ENCODERS
+
/* predict coded block */
static inline int coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr)
{
return pred;
}
+#ifdef CONFIG_ENCODERS
+
static void msmpeg4_encode_motion(MpegEncContext * s,
int mx, int my)
{
if (s->use_skip_mb_code && (cbp | motion_x | motion_y) == 0) {
/* skip macroblock */
put_bits(&s->pb, 1, 1);
+ s->last_bits++;
+ s->misc_bits++;
+ s->skip_count++;
+
return;
}
if (s->use_skip_mb_code)
put_bits(&s->pb,
cbpy_tab[coded_cbp>>2][1],
cbpy_tab[coded_cbp>>2][0]);
-
+
+ s->misc_bits += get_bits_diff(s);
+
h263_pred_motion(s, 0, &pred_x, &pred_y);
msmpeg4v2_encode_motion(s, motion_x - pred_x);
msmpeg4v2_encode_motion(s, motion_y - pred_y);
table_mb_non_intra[cbp + 64][1],
table_mb_non_intra[cbp + 64][0]);
+ s->misc_bits += get_bits_diff(s);
+
/* motion vector */
h263_pred_motion(s, 0, &pred_x, &pred_y);
msmpeg4_encode_motion(s, motion_x - pred_x,
motion_y - pred_y);
}
+
+ s->mv_bits += get_bits_diff(s);
+
+ for (i = 0; i < 6; i++) {
+ msmpeg4_encode_block(s, block[i], i);
+ }
+ s->p_tex_bits += get_bits_diff(s);
} else {
/* compute cbp */
cbp = 0;
put_bits(&s->pb, table_inter_intra[s->h263_aic_dir][1], table_inter_intra[s->h263_aic_dir][0]);
}
}
- }
+ s->misc_bits += get_bits_diff(s);
- for (i = 0; i < 6; i++) {
- msmpeg4_encode_block(s, block[i], i);
+ for (i = 0; i < 6; i++) {
+ msmpeg4_encode_block(s, block[i], i);
+ }
+ s->i_tex_bits += get_bits_diff(s);
+ s->i_count++;
}
}
+#endif //CONFIG_ENCODERS
+
/* old ffmpeg msmpeg4v3 mode */
static void ff_old_msmpeg4_dc_scale(MpegEncContext * s)
{
sum+=src[x + y*stride];
}
}
- return (sum + (scale>>1))/scale;
+ return FASTDIV((sum + (scale>>1)), scale);
}
/* dir = 0: left, dir = 1: top prediction */
b = (b + (8 >> 1)) / 8;
c = (c + (8 >> 1)) / 8;
} else {
- a = (a + (scale >> 1)) / scale;
- b = (b + (scale >> 1)) / scale;
- c = (c + (scale >> 1)) / scale;
+ a = FASTDIV((a + (scale >> 1)), scale);
+ b = FASTDIV((b + (scale >> 1)), scale);
+ c = FASTDIV((c + (scale >> 1)), scale);
}
#endif
/* XXX: WARNING: they did not choose the same test as MPEG4. This
return pred;
sign = get_bits1(&s->gb);
shift = f_code - 1;
- val = (code - 1) << shift;
- if (shift > 0)
+ val = code;
+ if (shift) {
+ val = (val - 1) << shift;
val |= get_bits(&s->gb, shift);
- val++;
+ val++;
+ }
if (sign)
val = -val;
{
int cbp, code, i;
- s->error_status_table[s->mb_x + s->mb_y*s->mb_width]= 0;
-
if (s->pict_type == P_TYPE) {
if (s->use_skip_mb_code) {
if (get_bits1(&s->gb)) {
{
int cbp, code, i;
uint8_t *coded_val;
+ uint32_t * const mb_type_ptr= &s->current_picture.mb_type[ s->mb_x + s->mb_y*s->mb_stride ];
-#ifdef PRINT_MB
-if(s->mb_x==0){
- printf("\n");
- if(s->mb_y==0) printf("\n");
-}
-#endif
-
- s->error_status_table[s->mb_x + s->mb_y*s->mb_width]= 0;
-
if (s->pict_type == P_TYPE) {
set_stat(ST_INTER_MB);
if (s->use_skip_mb_code) {
s->mv[0][0][0] = 0;
s->mv[0][0][1] = 0;
s->mb_skiped = 1;
-#ifdef PRINT_MB
-printf("S ");
-#endif
+ *mb_type_ptr = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16;
+
return 0;
}
}
s->mv_type = MV_TYPE_16X16;
s->mv[0][0][0] = mx;
s->mv[0][0][1] = my;
-#ifdef PRINT_MB
-printf("P ");
-#endif
+ *mb_type_ptr = MB_TYPE_L0 | MB_TYPE_16x16;
} else {
//printf("I at %d %d %d %06X\n", s->mb_x, s->mb_y, ((cbp&3)? 1 : 0) +((cbp&0x3C)? 2 : 0), show_bits(&s->gb, 24));
set_stat(ST_INTRA_MB);
s->ac_pred = get_bits1(&s->gb);
-#ifdef PRINT_MB
-printf("%c", s->ac_pred ? 'A' : 'I');
-#endif
+ *mb_type_ptr = MB_TYPE_INTRA;
if(s->inter_intra_pred){
s->h263_aic_dir= get_vlc2(&s->gb, inter_intra_vlc.table, INTER_INTRA_VLC_BITS, 1);
// printf("%d%d %d %d/", s->ac_pred, s->h263_aic_dir, s->mb_x, s->mb_y);
/* DC coef */
set_stat(ST_DC);
level = msmpeg4_decode_dc(s, n, &dc_pred_dir);
-#ifdef PRINT_MB
-{
- static int c;
- if(n==0) c=0;
- if(n==4) printf("%X", c);
- c+= c +dc_pred_dir;
-}
-#endif
+
if (level < 0){
fprintf(stderr, "dc overflow- block: %d qscale: %d//\n", n, s->qscale);
if(s->inter_intra_pred) level=0;
projects / ffmpeg / blobdiff