/*
* H263 internal header
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_H263_H
#define AVCODEC_H263_H
+#include <stdint.h>
+#include "libavutil/rational.h"
+#include "get_bits.h"
+#include "mpegvideo.h"
+#include "rl.h"
+
// The defines below define the number of bits that are read at once for
// reading vlc values. Changing these may improve speed and data cache needs
// be aware though that decreasing them may need the number of stages that is
#define TEX_VLC_BITS 9
extern const AVRational ff_h263_pixel_aspect[16];
-extern const uint8_t cbpy_tab[16][2];
+extern const uint8_t ff_h263_cbpy_tab[16][2];
+
+extern const uint8_t cbpc_b_tab[4][2];
extern const uint8_t mvtab[33][2];
-extern const uint8_t intra_MCBPC_code[9];
-extern const uint8_t intra_MCBPC_bits[9];
+extern const uint8_t ff_h263_intra_MCBPC_code[9];
+extern const uint8_t ff_h263_intra_MCBPC_bits[9];
+
+extern const uint8_t ff_h263_inter_MCBPC_code[28];
+extern const uint8_t ff_h263_inter_MCBPC_bits[28];
+extern const uint8_t h263_mbtype_b_tab[15][2];
+
+extern VLC ff_h263_intra_MCBPC_vlc;
+extern VLC ff_h263_inter_MCBPC_vlc;
+extern VLC ff_h263_cbpy_vlc;
+
+extern RLTable ff_h263_rl_inter;
-extern const uint8_t inter_MCBPC_code[28];
-extern const uint8_t inter_MCBPC_bits[28];
+extern RLTable rl_intra_aic;
-extern VLC intra_MCBPC_vlc;
-extern VLC inter_MCBPC_vlc;
-extern VLC cbpy_vlc;
+extern const uint16_t h263_format[8][2];
+extern const uint8_t modified_quant_tab[2][32];
+extern uint16_t ff_mba_max[6];
+extern uint8_t ff_mba_length[7];
+
+extern uint8_t ff_h263_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
-extern RLTable rl_inter;
int h263_decode_motion(MpegEncContext * s, int pred, int f_code);
av_const int ff_h263_aspect_to_info(AVRational aspect);
+int ff_h263_decode_init(AVCodecContext *avctx);
+int ff_h263_decode_frame(AVCodecContext *avctx,
+ void *data, int *data_size,
+ AVPacket *avpkt);
+int ff_h263_decode_end(AVCodecContext *avctx);
+void h263_encode_mb(MpegEncContext *s,
+ DCTELEM block[6][64],
+ int motion_x, int motion_y);
+void h263_encode_picture_header(MpegEncContext *s, int picture_number);
+void h263_encode_gob_header(MpegEncContext * s, int mb_line);
+int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir,
+ int *px, int *py);
+void h263_encode_init(MpegEncContext *s);
+void h263_decode_init_vlc(MpegEncContext *s);
+int h263_decode_picture_header(MpegEncContext *s);
+int ff_h263_decode_gob_header(MpegEncContext *s);
+void ff_h263_update_motion_val(MpegEncContext * s);
+void ff_h263_loop_filter(MpegEncContext * s);
+int ff_h263_decode_mba(MpegEncContext *s);
+void ff_h263_encode_mba(MpegEncContext *s);
+void ff_init_qscale_tab(MpegEncContext *s);
+int h263_pred_dc(MpegEncContext * s, int n, int16_t **dc_val_ptr);
+void h263_pred_acdc(MpegEncContext * s, DCTELEM *block, int n);
+
+
+/**
+ * Print picture info if FF_DEBUG_PICT_INFO is set.
+ */
+void ff_h263_show_pict_info(MpegEncContext *s);
+
+int ff_intel_h263_decode_picture_header(MpegEncContext *s);
+int ff_h263_decode_mb(MpegEncContext *s,
+ DCTELEM block[6][64]);
+
+/**
+ * Return the value of the 3bit "source format" syntax element.
+ * This represents some standard picture dimensions or indicates that
+ * width&height are explicitly stored later.
+ */
+int av_const h263_get_picture_format(int width, int height);
+
+void ff_clean_h263_qscales(MpegEncContext *s);
+int ff_h263_resync(MpegEncContext *s);
+const uint8_t *ff_h263_find_resync_marker(const uint8_t *p, const uint8_t *end);
+int ff_h263_get_gob_height(MpegEncContext *s);
+void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);
+
static inline int h263_get_motion_length(MpegEncContext * s, int val, int f_code){
int l, bit_size, code;
const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
for(i=0; i<4; i++){
- int score= inter_MCBPC_bits[i + offset] * lambda;
+ int score= ff_h263_inter_MCBPC_bits[i + offset] * lambda;
if(i&1) score += s->coded_score[5];
if(i&2) score += s->coded_score[4];
}
for(i=0; i<16; i++){
- int score= cbpy_tab[i ^ 0xF][1] * lambda;
+ int score= ff_h263_cbpy_tab[i ^ 0xF][1] * lambda;
if(i&1) score += s->coded_score[3];
if(i&2) score += s->coded_score[2];
if(i&4) score += s->coded_score[1];
return cbp;
}
-static inline int get_b_cbp(MpegEncContext * s, DCTELEM block[6][64],
- int motion_x, int motion_y, int mb_type){
- int cbp=0, i;
-
- if(s->flags & CODEC_FLAG_CBP_RD){
- int score=0;
- const int lambda= s->lambda2 >> (FF_LAMBDA_SHIFT - 6);
-
- for(i=0; i<6; i++){
- if(s->coded_score[i] < 0){
- score += s->coded_score[i];
- cbp |= 1 << (5 - i);
- }
- }
-
- if(cbp){
- int zero_score= -6;
- if ((motion_x | motion_y | s->dquant | mb_type) == 0){
- zero_score-= 4; //2*MV + mb_type + cbp bit
- }
-
- zero_score*= lambda;
- if(zero_score <= score){
- cbp=0;
- }
- }
-
- for (i = 0; i < 6; i++) {
- if (s->block_last_index[i] >= 0 && ((cbp >> (5 - i))&1)==0 ){
- s->block_last_index[i]= -1;
- s->dsp.clear_block(s->block[i]);
- }
- }
- }else{
- for (i = 0; i < 6; i++) {
- if (s->block_last_index[i] >= 0)
- cbp |= 1 << (5 - i);
- }
- }
- return cbp;
+static inline void memsetw(short *tab, int val, int n)
+{
+ int i;
+ for(i=0;i<n;i++)
+ tab[i] = val;
}
-#endif
+
+#endif /* AVCODEC_H263_H */
projects / ffmpeg / blobdiff