* Chinese AVS video (AVS1-P2, JiZhun profile) decoder.
* Copyright (c) 2006 Stefan Gehrer <stefan.gehrer@gmx.de>
*
- * 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_CAVS_H
#define AVCODEC_CAVS_H
-#include "dsputil.h"
-#include "mpegvideo.h"
+#include "cavsdsp.h"
+#include "blockdsp.h"
+#include "h264chroma.h"
+#include "idctdsp.h"
+#include "get_bits.h"
+#include "videodsp.h"
#define SLICE_MAX_START_CODE 0x000001af
#define EXT_START_CODE 0x000001b5
MV_BWD_X3
};
-DECLARE_ALIGNED_8(typedef, struct) {
+DECLARE_ALIGNED(8, typedef, struct) {
int16_t x;
int16_t y;
int16_t dist;
int8_t max_run;
};
-typedef struct {
- MpegEncContext s;
- Picture picture; ///< currently decoded frame
- Picture DPB[2]; ///< reference frames
+typedef struct AVSFrame {
+ AVFrame *f;
+ int poc;
+} AVSFrame;
+
+typedef struct AVSContext {
+ AVCodecContext *avctx;
+ BlockDSPContext bdsp;
+ H264ChromaContext h264chroma;
+ IDCTDSPContext idsp;
+ VideoDSPContext vdsp;
+ CAVSDSPContext cdsp;
+ GetBitContext gb;
+ AVSFrame cur; ///< currently decoded frame
+ AVSFrame DPB[2]; ///< reference frames
int dist[2]; ///< temporal distances from current frame to ref frames
+ int low_delay;
int profile, level;
int aspect_ratio;
int mb_width, mb_height;
- int pic_type;
+ int width, height;
int stream_revision; ///<0 for samples from 2006, 1 for rm52j encoder
int progressive;
int pic_structure;
6: A3 X2 X3 */
int pred_mode_Y[3*3];
int *top_pred_Y;
- int l_stride, c_stride;
+ ptrdiff_t l_stride, c_stride;
int luma_scan[4];
int qp;
int qp_fixed;
int direct_den[2]; ///< for scaling in direct B block
int scale_den[2]; ///< for scaling neighbouring MVs
+ uint8_t *edge_emu_buffer;
+
int got_keyframe;
- DCTELEM *block;
+ int16_t *block;
} AVSContext;
-extern const uint8_t ff_cavs_dequant_shift[64];
-extern const uint16_t ff_cavs_dequant_mul[64];
-extern const struct dec_2dvlc ff_cavs_intra_dec[7];
-extern const struct dec_2dvlc ff_cavs_inter_dec[7];
-extern const struct dec_2dvlc ff_cavs_chroma_dec[5];
-extern const uint8_t ff_cavs_chroma_qp[64];
-extern const uint8_t ff_cavs_scan3x3[4];
extern const uint8_t ff_cavs_partition_flags[30];
-extern const int_fast8_t ff_left_modifier_l[8];
-extern const int_fast8_t ff_top_modifier_l[8];
-extern const int_fast8_t ff_left_modifier_c[7];
-extern const int_fast8_t ff_top_modifier_c[7];
extern const cavs_vector ff_cavs_intra_mv;
-extern const cavs_vector ff_cavs_un_mv;
extern const cavs_vector ff_cavs_dir_mv;
-static inline void modify_pred(const int_fast8_t *mod_table, int *mode) {
- *mode = mod_table[*mode];
- if(*mode < 0) {
- av_log(NULL, AV_LOG_ERROR, "Illegal intra prediction mode\n");
- *mode = 0;
- }
-}
-
-static inline void set_intra_mode_default(AVSContext *h) {
- h->pred_mode_Y[3] = h->pred_mode_Y[6] = INTRA_L_LP;
- h->top_pred_Y[h->mbx*2+0] = h->top_pred_Y[h->mbx*2+1] = INTRA_L_LP;
-}
-
static inline void set_mvs(cavs_vector *mv, enum cavs_block size) {
switch(size) {
case BLK_16X16:
}
}
-static inline void set_mv_intra(AVSContext *h) {
- h->mv[MV_FWD_X0] = ff_cavs_intra_mv;
- set_mvs(&h->mv[MV_FWD_X0], BLK_16X16);
- h->mv[MV_BWD_X0] = ff_cavs_intra_mv;
- set_mvs(&h->mv[MV_BWD_X0], BLK_16X16);
- if(h->pic_type != FF_B_TYPE)
- h->col_type_base[h->mbidx] = I_8X8;
-}
-
-static inline int dequant(AVSContext *h, DCTELEM *level_buf, uint8_t *run_buf,
- DCTELEM *dst, int mul, int shift, int coeff_num) {
- int round = 1 << (shift - 1);
- int pos = -1;
- const uint8_t *scantab = h->scantable.permutated;
-
- /* inverse scan and dequantization */
- while(--coeff_num >= 0){
- pos += run_buf[coeff_num];
- if(pos > 63) {
- av_log(h->s.avctx, AV_LOG_ERROR,
- "position out of block bounds at pic %d MB(%d,%d)\n",
- h->picture.poc, h->mbx, h->mby);
- return -1;
- }
- dst[scantab[pos]] = (level_buf[coeff_num]*mul + round) >> shift;
- }
- return 0;
-}
-
void ff_cavs_filter(AVSContext *h, enum cavs_mb mb_type);
void ff_cavs_load_intra_pred_luma(AVSContext *h, uint8_t *top, uint8_t **left,
int block);
projects / ffmpeg / blobdiff