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Diffstat (limited to 'ffmpeg/libavcodec/h263.c')
-rw-r--r--ffmpeg/libavcodec/h263.c381
1 files changed, 0 insertions, 381 deletions
diff --git a/ffmpeg/libavcodec/h263.c b/ffmpeg/libavcodec/h263.c
deleted file mode 100644
index dafc4ec..0000000
--- a/ffmpeg/libavcodec/h263.c
+++ /dev/null
@@ -1,381 +0,0 @@
-/*
- * H263/MPEG4 backend for encoder and decoder
- * Copyright (c) 2000,2001 Fabrice Bellard
- * H263+ support.
- * Copyright (c) 2001 Juan J. Sierralta P
- * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg 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,
- * 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
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file
- * h263/mpeg4 codec.
- */
-
-#include <limits.h>
-
-#include "avcodec.h"
-#include "mpegvideo.h"
-#include "h263.h"
-#include "h263data.h"
-#include "mathops.h"
-#include "unary.h"
-#include "flv.h"
-#include "mpeg4video.h"
-
-
-uint8_t ff_h263_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
-
-
-void ff_h263_update_motion_val(MpegEncContext * s){
- const int mb_xy = s->mb_y * s->mb_stride + s->mb_x;
- //FIXME a lot of that is only needed for !low_delay
- const int wrap = s->b8_stride;
- const int xy = s->block_index[0];
-
- s->current_picture.mbskip_table[mb_xy] = s->mb_skipped;
-
- if(s->mv_type != MV_TYPE_8X8){
- int motion_x, motion_y;
- if (s->mb_intra) {
- motion_x = 0;
- motion_y = 0;
- } else if (s->mv_type == MV_TYPE_16X16) {
- motion_x = s->mv[0][0][0];
- motion_y = s->mv[0][0][1];
- } else /*if (s->mv_type == MV_TYPE_FIELD)*/ {
- int i;
- motion_x = s->mv[0][0][0] + s->mv[0][1][0];
- motion_y = s->mv[0][0][1] + s->mv[0][1][1];
- motion_x = (motion_x>>1) | (motion_x&1);
- for(i=0; i<2; i++){
- s->p_field_mv_table[i][0][mb_xy][0]= s->mv[0][i][0];
- s->p_field_mv_table[i][0][mb_xy][1]= s->mv[0][i][1];
- }
- s->current_picture.ref_index[0][4*mb_xy ] =
- s->current_picture.ref_index[0][4*mb_xy + 1] = s->field_select[0][0];
- s->current_picture.ref_index[0][4*mb_xy + 2] =
- s->current_picture.ref_index[0][4*mb_xy + 3] = s->field_select[0][1];
- }
-
- /* no update if 8X8 because it has been done during parsing */
- s->current_picture.motion_val[0][xy][0] = motion_x;
- s->current_picture.motion_val[0][xy][1] = motion_y;
- s->current_picture.motion_val[0][xy + 1][0] = motion_x;
- s->current_picture.motion_val[0][xy + 1][1] = motion_y;
- s->current_picture.motion_val[0][xy + wrap][0] = motion_x;
- s->current_picture.motion_val[0][xy + wrap][1] = motion_y;
- s->current_picture.motion_val[0][xy + 1 + wrap][0] = motion_x;
- s->current_picture.motion_val[0][xy + 1 + wrap][1] = motion_y;
- }
-
- if(s->encoding){ //FIXME encoding MUST be cleaned up
- if (s->mv_type == MV_TYPE_8X8)
- s->current_picture.mb_type[mb_xy] = MB_TYPE_L0 | MB_TYPE_8x8;
- else if(s->mb_intra)
- s->current_picture.mb_type[mb_xy] = MB_TYPE_INTRA;
- else
- s->current_picture.mb_type[mb_xy] = MB_TYPE_L0 | MB_TYPE_16x16;
- }
-}
-
-int ff_h263_pred_dc(MpegEncContext * s, int n, int16_t **dc_val_ptr)
-{
- int x, y, wrap, a, c, pred_dc;
- int16_t *dc_val;
-
- /* find prediction */
- if (n < 4) {
- x = 2 * s->mb_x + (n & 1);
- y = 2 * s->mb_y + ((n & 2) >> 1);
- wrap = s->b8_stride;
- dc_val = s->dc_val[0];
- } else {
- x = s->mb_x;
- y = s->mb_y;
- wrap = s->mb_stride;
- dc_val = s->dc_val[n - 4 + 1];
- }
- /* B C
- * A X
- */
- a = dc_val[(x - 1) + (y) * wrap];
- c = dc_val[(x) + (y - 1) * wrap];
-
- /* No prediction outside GOB boundary */
- if(s->first_slice_line && n!=3){
- if(n!=2) c= 1024;
- if(n!=1 && s->mb_x == s->resync_mb_x) a= 1024;
- }
- /* just DC prediction */
- if (a != 1024 && c != 1024)
- pred_dc = (a + c) >> 1;
- else if (a != 1024)
- pred_dc = a;
- else
- pred_dc = c;
-
- /* we assume pred is positive */
- *dc_val_ptr = &dc_val[x + y * wrap];
- return pred_dc;
-}
-
-void ff_h263_loop_filter(MpegEncContext * s){
- int qp_c;
- const int linesize = s->linesize;
- const int uvlinesize= s->uvlinesize;
- const int xy = s->mb_y * s->mb_stride + s->mb_x;
- uint8_t *dest_y = s->dest[0];
- uint8_t *dest_cb= s->dest[1];
- uint8_t *dest_cr= s->dest[2];
-
-// if(s->pict_type==AV_PICTURE_TYPE_B && !s->readable) return;
-
- /*
- Diag Top
- Left Center
- */
- if (!IS_SKIP(s->current_picture.mb_type[xy])) {
- qp_c= s->qscale;
- s->h263dsp.h263_v_loop_filter(dest_y + 8 * linesize, linesize, qp_c);
- s->h263dsp.h263_v_loop_filter(dest_y + 8 * linesize + 8, linesize, qp_c);
- }else
- qp_c= 0;
-
- if(s->mb_y){
- int qp_dt, qp_tt, qp_tc;
-
- if (IS_SKIP(s->current_picture.mb_type[xy - s->mb_stride]))
- qp_tt=0;
- else
- qp_tt = s->current_picture.qscale_table[xy - s->mb_stride];
-
- if(qp_c)
- qp_tc= qp_c;
- else
- qp_tc= qp_tt;
-
- if(qp_tc){
- const int chroma_qp= s->chroma_qscale_table[qp_tc];
- s->h263dsp.h263_v_loop_filter(dest_y, linesize, qp_tc);
- s->h263dsp.h263_v_loop_filter(dest_y + 8, linesize, qp_tc);
-
- s->h263dsp.h263_v_loop_filter(dest_cb, uvlinesize, chroma_qp);
- s->h263dsp.h263_v_loop_filter(dest_cr, uvlinesize, chroma_qp);
- }
-
- if(qp_tt)
- s->h263dsp.h263_h_loop_filter(dest_y - 8 * linesize + 8, linesize, qp_tt);
-
- if(s->mb_x){
- if (qp_tt || IS_SKIP(s->current_picture.mb_type[xy - 1 - s->mb_stride]))
- qp_dt= qp_tt;
- else
- qp_dt = s->current_picture.qscale_table[xy - 1 - s->mb_stride];
-
- if(qp_dt){
- const int chroma_qp= s->chroma_qscale_table[qp_dt];
- s->h263dsp.h263_h_loop_filter(dest_y - 8 * linesize, linesize, qp_dt);
- s->h263dsp.h263_h_loop_filter(dest_cb - 8 * uvlinesize, uvlinesize, chroma_qp);
- s->h263dsp.h263_h_loop_filter(dest_cr - 8 * uvlinesize, uvlinesize, chroma_qp);
- }
- }
- }
-
- if(qp_c){
- s->h263dsp.h263_h_loop_filter(dest_y + 8, linesize, qp_c);
- if(s->mb_y + 1 == s->mb_height)
- s->h263dsp.h263_h_loop_filter(dest_y + 8 * linesize + 8, linesize, qp_c);
- }
-
- if(s->mb_x){
- int qp_lc;
- if (qp_c || IS_SKIP(s->current_picture.mb_type[xy - 1]))
- qp_lc= qp_c;
- else
- qp_lc = s->current_picture.qscale_table[xy - 1];
-
- if(qp_lc){
- s->h263dsp.h263_h_loop_filter(dest_y, linesize, qp_lc);
- if(s->mb_y + 1 == s->mb_height){
- const int chroma_qp= s->chroma_qscale_table[qp_lc];
- s->h263dsp.h263_h_loop_filter(dest_y + 8 * linesize, linesize, qp_lc);
- s->h263dsp.h263_h_loop_filter(dest_cb, uvlinesize, chroma_qp);
- s->h263dsp.h263_h_loop_filter(dest_cr, uvlinesize, chroma_qp);
- }
- }
- }
-}
-
-void ff_h263_pred_acdc(MpegEncContext * s, int16_t *block, int n)
-{
- int x, y, wrap, a, c, pred_dc, scale, i;
- int16_t *dc_val, *ac_val, *ac_val1;
-
- /* find prediction */
- if (n < 4) {
- x = 2 * s->mb_x + (n & 1);
- y = 2 * s->mb_y + (n>> 1);
- wrap = s->b8_stride;
- dc_val = s->dc_val[0];
- ac_val = s->ac_val[0][0];
- scale = s->y_dc_scale;
- } else {
- x = s->mb_x;
- y = s->mb_y;
- wrap = s->mb_stride;
- dc_val = s->dc_val[n - 4 + 1];
- ac_val = s->ac_val[n - 4 + 1][0];
- scale = s->c_dc_scale;
- }
-
- ac_val += ((y) * wrap + (x)) * 16;
- ac_val1 = ac_val;
-
- /* B C
- * A X
- */
- a = dc_val[(x - 1) + (y) * wrap];
- c = dc_val[(x) + (y - 1) * wrap];
-
- /* No prediction outside GOB boundary */
- if(s->first_slice_line && n!=3){
- if(n!=2) c= 1024;
- if(n!=1 && s->mb_x == s->resync_mb_x) a= 1024;
- }
-
- if (s->ac_pred) {
- pred_dc = 1024;
- if (s->h263_aic_dir) {
- /* left prediction */
- if (a != 1024) {
- ac_val -= 16;
- for(i=1;i<8;i++) {
- block[s->dsp.idct_permutation[i<<3]] += ac_val[i];
- }
- pred_dc = a;
- }
- } else {
- /* top prediction */
- if (c != 1024) {
- ac_val -= 16 * wrap;
- for(i=1;i<8;i++) {
- block[s->dsp.idct_permutation[i ]] += ac_val[i + 8];
- }
- pred_dc = c;
- }
- }
- } else {
- /* just DC prediction */
- if (a != 1024 && c != 1024)
- pred_dc = (a + c) >> 1;
- else if (a != 1024)
- pred_dc = a;
- else
- pred_dc = c;
- }
-
- /* we assume pred is positive */
- block[0]=block[0]*scale + pred_dc;
-
- if (block[0] < 0)
- block[0] = 0;
- else
- block[0] |= 1;
-
- /* Update AC/DC tables */
- dc_val[(x) + (y) * wrap] = block[0];
-
- /* left copy */
- for(i=1;i<8;i++)
- ac_val1[i ] = block[s->dsp.idct_permutation[i<<3]];
- /* top copy */
- for(i=1;i<8;i++)
- ac_val1[8 + i] = block[s->dsp.idct_permutation[i ]];
-}
-
-int16_t *ff_h263_pred_motion(MpegEncContext * s, int block, int dir,
- int *px, int *py)
-{
- int wrap;
- int16_t *A, *B, *C, (*mot_val)[2];
- static const int off[4]= {2, 1, 1, -1};
-
- wrap = s->b8_stride;
- mot_val = s->current_picture.motion_val[dir] + s->block_index[block];
-
- A = mot_val[ - 1];
- /* special case for first (slice) line */
- if (s->first_slice_line && block<3) {
- // we can't just change some MVs to simulate that as we need them for the B frames (and ME)
- // and if we ever support non rectangular objects than we need to do a few ifs here anyway :(
- if(block==0){ //most common case
- if(s->mb_x == s->resync_mb_x){ //rare
- *px= *py = 0;
- }else if(s->mb_x + 1 == s->resync_mb_x && s->h263_pred){ //rare
- C = mot_val[off[block] - wrap];
- if(s->mb_x==0){
- *px = C[0];
- *py = C[1];
- }else{
- *px = mid_pred(A[0], 0, C[0]);
- *py = mid_pred(A[1], 0, C[1]);
- }
- }else{
- *px = A[0];
- *py = A[1];
- }
- }else if(block==1){
- if(s->mb_x + 1 == s->resync_mb_x && s->h263_pred){ //rare
- C = mot_val[off[block] - wrap];
- *px = mid_pred(A[0], 0, C[0]);
- *py = mid_pred(A[1], 0, C[1]);
- }else{
- *px = A[0];
- *py = A[1];
- }
- }else{ /* block==2*/
- B = mot_val[ - wrap];
- C = mot_val[off[block] - wrap];
- if(s->mb_x == s->resync_mb_x) //rare
- A[0]=A[1]=0;
-
- *px = mid_pred(A[0], B[0], C[0]);
- *py = mid_pred(A[1], B[1], C[1]);
- }
- } else {
- B = mot_val[ - wrap];
- C = mot_val[off[block] - wrap];
- *px = mid_pred(A[0], B[0], C[0]);
- *py = mid_pred(A[1], B[1], C[1]);
- }
- return *mot_val;
-}
-
-
-/**
- * Get the GOB height based on picture height.
- */
-int ff_h263_get_gob_height(MpegEncContext *s){
- if (s->height <= 400)
- return 1;
- else if (s->height <= 800)
- return 2;
- else
- return 4;
-}
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