*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#ifndef CAVS_H
-#define CAVS_H
+#ifndef FFMPEG_CAVS_H
+#define FFMPEG_CAVS_H
#include "dsputil.h"
+#include "mpegvideo.h"
#define SLICE_MIN_START_CODE 0x00000101
#define SLICE_MAX_START_CODE 0x000001af
int16_t ref;
} vector_t;
-typedef struct residual_vlc_t {
+typedef struct dec_2dvlc_t {
int8_t rltab[59][3];
int8_t level_add[27];
int8_t golomb_order;
int inc_limit;
int8_t max_run;
-} residual_vlc_t;
+} dec_2dvlc_t;
-#endif /* CAVS_H */
+typedef struct {
+ MpegEncContext s;
+ Picture picture; ///< currently decoded frame
+ Picture DPB[2]; ///< reference frames
+ int dist[2]; ///< temporal distances from current frame to ref frames
+ int profile, level;
+ int aspect_ratio;
+ int mb_width, mb_height;
+ int pic_type;
+ int progressive;
+ int pic_structure;
+ int skip_mode_flag; ///< select between skip_count or one skip_flag per MB
+ int loop_filter_disable;
+ int alpha_offset, beta_offset;
+ int ref_flag;
+ int mbx, mby; ///< macroblock coordinates
+ int flags; ///< availability flags of neighbouring macroblocks
+ int stc; ///< last start code
+ uint8_t *cy, *cu, *cv; ///< current MB sample pointers
+ int left_qp;
+ uint8_t *top_qp;
+
+ /** mv motion vector cache
+ 0: D3 B2 B3 C2
+ 4: A1 X0 X1 -
+ 8: A3 X2 X3 -
+
+ X are the vectors in the current macroblock (5,6,9,10)
+ A is the macroblock to the left (4,8)
+ B is the macroblock to the top (1,2)
+ C is the macroblock to the top-right (3)
+ D is the macroblock to the top-left (0)
+
+ the same is repeated for backward motion vectors */
+ vector_t mv[2*4*3];
+ vector_t *top_mv[2];
+ vector_t *col_mv;
+
+ /** luma pred mode cache
+ 0: -- B2 B3
+ 3: A1 X0 X1
+ 6: A3 X2 X3 */
+ int pred_mode_Y[3*3];
+ int *top_pred_Y;
+ int l_stride, c_stride;
+ int luma_scan[4];
+ int qp;
+ int qp_fixed;
+ int cbp;
+ ScanTable scantable;
+
+ /** intra prediction is done with un-deblocked samples
+ they are saved here before deblocking the MB */
+ uint8_t *top_border_y, *top_border_u, *top_border_v;
+ uint8_t left_border_y[26], left_border_u[10], left_border_v[10];
+ uint8_t intern_border_y[26];
+ uint8_t topleft_border_y, topleft_border_u, topleft_border_v;
+
+ void (*intra_pred_l[8])(uint8_t *d,uint8_t *top,uint8_t *left,int stride);
+ void (*intra_pred_c[7])(uint8_t *d,uint8_t *top,uint8_t *left,int stride);
+ uint8_t *col_type_base;
+ uint8_t *col_type;
+
+ /* scaling factors for MV prediction */
+ int sym_factor; ///< for scaling in symmetrical B block
+ int direct_den[2]; ///< for scaling in direct B block
+ int scale_den[2]; ///< for scaling neighbouring MVs
+
+ int got_keyframe;
+ DCTELEM *block;
+} AVSContext;
+
+extern const uint8_t ff_cavs_dequant_shift[64];
+extern const uint16_t ff_cavs_dequant_mul[64];
+extern const dec_2dvlc_t ff_cavs_intra_dec[7];
+extern const dec_2dvlc_t ff_cavs_inter_dec[7];
+extern const dec_2dvlc_t 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 vector_t ff_cavs_intra_mv;
+extern const vector_t ff_cavs_un_mv;
+extern const vector_t 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(vector_t *mv, enum block_t size) {
+ switch(size) {
+ case BLK_16X16:
+ mv[MV_STRIDE ] = mv[0];
+ mv[MV_STRIDE+1] = mv[0];
+ case BLK_16X8:
+ mv[1] = mv[0];
+ break;
+ case BLK_8X16:
+ mv[MV_STRIDE] = mv[0];
+ break;
+ }
+}
+
+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 = 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 mb_t mb_type);
+void ff_cavs_load_intra_pred_luma(AVSContext *h, uint8_t *top, uint8_t **left,
+ int block);
+void ff_cavs_load_intra_pred_chroma(AVSContext *h);
+void ff_cavs_modify_mb_i(AVSContext *h, int *pred_mode_uv);
+void ff_cavs_inter(AVSContext *h, enum mb_t mb_type);
+void ff_cavs_mv(AVSContext *h, enum mv_loc_t nP, enum mv_loc_t nC,
+ enum mv_pred_t mode, enum block_t size, int ref);
+void ff_cavs_init_mb(AVSContext *h);
+int ff_cavs_next_mb(AVSContext *h);
+void ff_cavs_init_pic(AVSContext *h);
+void ff_cavs_init_top_lines(AVSContext *h);
+int ff_cavs_init(AVCodecContext *avctx);
+int ff_cavs_end (AVCodecContext *avctx);
+
+#endif /* FFMPEG_CAVS_H */
projects / ffmpeg / blobdiff