mirror of
https://github.com/webmproject/libwebp.git
synced 2025-07-16 13:59:51 +02:00
remove all disabled code related to P-frames
it's drifting out of sync, and won't be used anyway... Change-Id: I931b288e1c8480bf3bccd685b3a356bb6bd8e10b
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@ -33,57 +33,9 @@ static const int8_t kYModesIntra4[18] = {
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};
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#endif
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#ifndef ONLY_KEYFRAME_CODE
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// inter prediction modes
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enum {
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LEFT4 = 0, ABOVE4 = 1, ZERO4 = 2, NEW4 = 3,
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NEARESTMV, NEARMV, ZEROMV, NEWMV, SPLITMV };
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static const int8_t kYModesInter[8] = {
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-DC_PRED, 1,
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2, 3,
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-V_PRED, -H_PRED,
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-TM_PRED, -B_PRED
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};
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static const int8_t kMBSplit[6] = {
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-3, 1,
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-2, 2,
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-0, -1
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};
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static const int8_t kMVRef[8] = {
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-ZEROMV, 1,
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-NEARESTMV, 2,
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-NEARMV, 3,
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-NEWMV, -SPLITMV
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};
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static const int8_t kMVRef4[6] = {
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-LEFT4, 1,
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-ABOVE4, 2,
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-ZERO4, -NEW4
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};
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#endif
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//------------------------------------------------------------------------------
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// Default probabilities
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// Inter
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#ifndef ONLY_KEYFRAME_CODE
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static const uint8_t kYModeProbaInter0[4] = { 112, 86, 140, 37 };
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static const uint8_t kUVModeProbaInter0[3] = { 162, 101, 204 };
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static const uint8_t kMVProba0[2][NUM_MV_PROBAS] = {
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{ 162, 128, 225, 146, 172, 147, 214, 39,
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156, 128, 129, 132, 75, 145, 178, 206,
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239, 254, 254 },
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{ 164, 128, 204, 170, 119, 235, 140, 230,
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228, 128, 130, 130, 74, 148, 180, 203,
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236, 254, 254 }
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};
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#endif
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// Paragraph 13.5
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static const uint8_t
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CoeffsProba0[NUM_TYPES][NUM_BANDS][NUM_CTX][NUM_PROBAS] = {
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@ -328,11 +280,6 @@ static const uint8_t kBModesProba[NUM_BMODES][NUM_BMODES][NUM_BMODES - 1] = {
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void VP8ResetProba(VP8Proba* const proba) {
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memset(proba->segments_, 255u, sizeof(proba->segments_));
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// proba->bands_[][] is initialized later
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#ifndef ONLY_KEYFRAME_CODE
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memcpy(proba->mv_, kMVProba0, sizeof(kMVProba0));
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memcpy(proba->ymode_, kYModeProbaInter0, sizeof(kYModeProbaInter0));
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memcpy(proba->uvmode_, kUVModeProbaInter0, sizeof(kUVModeProbaInter0));
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#endif
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}
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void VP8ParseIntraMode(VP8BitReader* const br, VP8Decoder* const dec) {
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@ -528,17 +475,6 @@ static const uint8_t
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}
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};
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#ifndef ONLY_KEYFRAME_CODE
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static const uint8_t MVUpdateProba[2][NUM_MV_PROBAS] = {
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{ 237, 246, 253, 253, 254, 254, 254, 254,
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254, 254, 254, 254, 254, 254, 250, 250,
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252, 254, 254 },
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{ 231, 243, 245, 253, 254, 254, 254, 254,
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254, 254, 254, 254, 254, 254, 251, 251,
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254, 254, 254 }
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};
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#endif
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// Paragraph 9.9
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void VP8ParseProba(VP8BitReader* const br, VP8Decoder* const dec) {
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VP8Proba* const proba = &dec->proba_;
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@ -558,34 +494,6 @@ void VP8ParseProba(VP8BitReader* const br, VP8Decoder* const dec) {
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if (dec->use_skip_proba_) {
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dec->skip_p_ = VP8GetValue(br, 8);
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}
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#ifndef ONLY_KEYFRAME_CODE
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if (!dec->frm_hdr_.key_frame_) {
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int i;
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dec->intra_p_ = VP8GetValue(br, 8);
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dec->last_p_ = VP8GetValue(br, 8);
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dec->golden_p_ = VP8GetValue(br, 8);
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if (VP8Get(br)) { // update y-mode
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for (i = 0; i < 4; ++i) {
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proba->ymode_[i] = VP8GetValue(br, 8);
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}
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}
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if (VP8Get(br)) { // update uv-mode
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for (i = 0; i < 3; ++i) {
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proba->uvmode_[i] = VP8GetValue(br, 8);
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}
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}
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// update MV
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for (i = 0; i < 2; ++i) {
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int k;
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for (k = 0; k < NUM_MV_PROBAS; ++k) {
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if (VP8GetBit(br, MVUpdateProba[i][k])) {
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const int v = VP8GetValue(br, 7);
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proba->mv_[i][k] = v ? v << 1 : 1;
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}
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}
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}
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}
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#endif
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}
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#if defined(__cplusplus) || defined(c_plusplus)
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