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comparison: media/libvpx/vp9/encoder/vp9_vaq.c
media/libvpx/vp9/encoder/vp9_vaq.c
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:85a9a29623de |
|---|---|
| 1 /* | |
| 2 * Copyright (c) 2013 The WebM project authors. All Rights Reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include <math.h> | |
| 12 | |
| 13 #include "vp9/encoder/vp9_vaq.h" | |
| 14 | |
| 15 #include "vp9/common/vp9_seg_common.h" | |
| 16 | |
| 17 #include "vp9/encoder/vp9_ratectrl.h" | |
| 18 #include "vp9/encoder/vp9_rdopt.h" | |
| 19 #include "vp9/encoder/vp9_segmentation.h" | |
| 20 #include "vp9/common/vp9_systemdependent.h" | |
| 21 | |
| 22 #define ENERGY_MIN (-3) | |
| 23 #define ENERGY_MAX (3) | |
| 24 #define ENERGY_SPAN (ENERGY_MAX - ENERGY_MIN + 1) | |
| 25 #define ENERGY_IN_BOUNDS(energy)\ | |
| 26 assert((energy) >= ENERGY_MIN && (energy) <= ENERGY_MAX) | |
| 27 | |
| 28 static double q_ratio[MAX_SEGMENTS] = { 1, 1, 1, 1, 1, 1, 1, 1 }; | |
| 29 static double rdmult_ratio[MAX_SEGMENTS] = { 1, 1, 1, 1, 1, 1, 1, 1 }; | |
| 30 static int segment_id[MAX_SEGMENTS] = { 5, 3, 1, 0, 2, 4, 6, 7 }; | |
| 31 | |
| 32 #define Q_RATIO(i) q_ratio[(i) - ENERGY_MIN] | |
| 33 #define RDMULT_RATIO(i) rdmult_ratio[(i) - ENERGY_MIN] | |
| 34 #define SEGMENT_ID(i) segment_id[(i) - ENERGY_MIN] | |
| 35 | |
| 36 DECLARE_ALIGNED(16, static const uint8_t, vp9_64_zeros[64]) = {0}; | |
| 37 | |
| 38 unsigned int vp9_vaq_segment_id(int energy) { | |
| 39 ENERGY_IN_BOUNDS(energy); | |
| 40 | |
| 41 return SEGMENT_ID(energy); | |
| 42 } | |
| 43 | |
| 44 double vp9_vaq_rdmult_ratio(int energy) { | |
| 45 ENERGY_IN_BOUNDS(energy); | |
| 46 | |
| 47 vp9_clear_system_state(); // __asm emms; | |
| 48 | |
| 49 return RDMULT_RATIO(energy); | |
| 50 } | |
| 51 | |
| 52 double vp9_vaq_inv_q_ratio(int energy) { | |
| 53 ENERGY_IN_BOUNDS(energy); | |
| 54 | |
| 55 vp9_clear_system_state(); // __asm emms; | |
| 56 | |
| 57 return Q_RATIO(-energy); | |
| 58 } | |
| 59 | |
| 60 void vp9_vaq_init() { | |
| 61 int i; | |
| 62 double base_ratio; | |
| 63 | |
| 64 assert(ENERGY_SPAN <= MAX_SEGMENTS); | |
| 65 | |
| 66 vp9_clear_system_state(); // __asm emms; | |
| 67 | |
| 68 base_ratio = 1.8; | |
| 69 | |
| 70 for (i = ENERGY_MIN; i <= ENERGY_MAX; i++) { | |
| 71 Q_RATIO(i) = pow(base_ratio, i/3.0); | |
| 72 } | |
| 73 } | |
| 74 | |
| 75 void vp9_vaq_frame_setup(VP9_COMP *cpi) { | |
| 76 VP9_COMMON *cm = &cpi->common; | |
| 77 struct segmentation *seg = &cm->seg; | |
| 78 int base_q = vp9_convert_qindex_to_q(cm->base_qindex); | |
| 79 int base_rdmult = vp9_compute_rd_mult(cpi, cm->base_qindex + | |
| 80 cm->y_dc_delta_q); | |
| 81 int i; | |
| 82 | |
| 83 vp9_enable_segmentation((VP9_PTR)cpi); | |
| 84 vp9_clearall_segfeatures(seg); | |
| 85 | |
| 86 seg->abs_delta = SEGMENT_DELTADATA; | |
| 87 | |
| 88 vp9_clear_system_state(); // __asm emms; | |
| 89 | |
| 90 for (i = ENERGY_MIN; i <= ENERGY_MAX; i++) { | |
| 91 int qindex_delta, segment_rdmult; | |
| 92 | |
| 93 if (Q_RATIO(i) == 1) { | |
| 94 // No need to enable SEG_LVL_ALT_Q for this segment | |
| 95 RDMULT_RATIO(i) = 1; | |
| 96 continue; | |
| 97 } | |
| 98 | |
| 99 qindex_delta = vp9_compute_qdelta(cpi, base_q, base_q * Q_RATIO(i)); | |
| 100 vp9_set_segdata(seg, SEGMENT_ID(i), SEG_LVL_ALT_Q, qindex_delta); | |
| 101 vp9_enable_segfeature(seg, SEGMENT_ID(i), SEG_LVL_ALT_Q); | |
| 102 | |
| 103 segment_rdmult = vp9_compute_rd_mult(cpi, cm->base_qindex + qindex_delta + | |
| 104 cm->y_dc_delta_q); | |
| 105 | |
| 106 RDMULT_RATIO(i) = (double) segment_rdmult / base_rdmult; | |
| 107 } | |
| 108 } | |
| 109 | |
| 110 | |
| 111 static unsigned int block_variance(VP9_COMP *cpi, MACROBLOCK *x, | |
| 112 BLOCK_SIZE bs) { | |
| 113 MACROBLOCKD *xd = &x->e_mbd; | |
| 114 unsigned int var, sse; | |
| 115 int right_overflow = (xd->mb_to_right_edge < 0) ? | |
| 116 ((-xd->mb_to_right_edge) >> 3) : 0; | |
| 117 int bottom_overflow = (xd->mb_to_bottom_edge < 0) ? | |
| 118 ((-xd->mb_to_bottom_edge) >> 3) : 0; | |
| 119 | |
| 120 if (right_overflow || bottom_overflow) { | |
| 121 const int bw = 8 * num_8x8_blocks_wide_lookup[bs] - right_overflow; | |
| 122 const int bh = 8 * num_8x8_blocks_high_lookup[bs] - bottom_overflow; | |
| 123 int avg; | |
| 124 variance(x->plane[0].src.buf, x->plane[0].src.stride, | |
| 125 vp9_64_zeros, 0, bw, bh, &sse, &avg); | |
| 126 var = sse - (((int64_t)avg * avg) / (bw * bh)); | |
| 127 return (256 * var) / (bw * bh); | |
| 128 } else { | |
| 129 var = cpi->fn_ptr[bs].vf(x->plane[0].src.buf, | |
| 130 x->plane[0].src.stride, | |
| 131 vp9_64_zeros, 0, &sse); | |
| 132 return (256 * var) >> num_pels_log2_lookup[bs]; | |
| 133 } | |
| 134 } | |
| 135 | |
| 136 int vp9_block_energy(VP9_COMP *cpi, MACROBLOCK *x, BLOCK_SIZE bs) { | |
| 137 double energy; | |
| 138 unsigned int var = block_variance(cpi, x, bs); | |
| 139 | |
| 140 vp9_clear_system_state(); // __asm emms; | |
| 141 | |
| 142 // if (var <= 1000) | |
| 143 // return 0; | |
| 144 | |
| 145 energy = 0.9*(logf(var + 1) - 10.0); | |
| 146 return clamp(round(energy), ENERGY_MIN, ENERGY_MAX); | |
| 147 } |
