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authorLioncash <mathew1800@gmail.com>2020-10-30 03:34:44 +0100
committerLioncash <mathew1800@gmail.com>2020-10-30 03:34:46 +0100
commitf8543249f0e96a3148f3ea888bfa62882e67f523 (patch)
treefbf46483ea3b3ca233244ee88fab3ebcf9e37061 /src/video_core
parentMerge pull request #4831 from lioncash/fmt (diff)
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Diffstat (limited to 'src/video_core')
-rw-r--r--src/video_core/command_classes/codecs/vp9.cpp102
-rw-r--r--src/video_core/command_classes/codecs/vp9.h10
2 files changed, 54 insertions, 58 deletions
diff --git a/src/video_core/command_classes/codecs/vp9.cpp b/src/video_core/command_classes/codecs/vp9.cpp
index b3e98aa9f..aeb9866de 100644
--- a/src/video_core/command_classes/codecs/vp9.cpp
+++ b/src/video_core/command_classes/codecs/vp9.cpp
@@ -197,6 +197,60 @@ constexpr std::array<s32, 254> map_lut{
230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 18, 242, 243, 244, 245, 246, 247,
248, 249, 250, 251, 252, 253, 19,
};
+
+// 6.2.14 Tile size calculation
+
+s32 CalcMinLog2TileCols(s32 frame_width) {
+ const s32 sb64_cols = (frame_width + 63) / 64;
+ s32 min_log2 = 0;
+
+ while ((64 << min_log2) < sb64_cols) {
+ min_log2++;
+ }
+
+ return min_log2;
+}
+
+s32 CalcMaxLog2TileCols(s32 frame_width) {
+ const s32 sb64_cols = (frame_width + 63) / 64;
+ s32 max_log2 = 1;
+
+ while ((sb64_cols >> max_log2) >= 4) {
+ max_log2++;
+ }
+
+ return max_log2 - 1;
+}
+
+// Recenters probability. Based on section 6.3.6 of VP9 Specification
+s32 RecenterNonNeg(s32 new_prob, s32 old_prob) {
+ if (new_prob > old_prob * 2) {
+ return new_prob;
+ }
+
+ if (new_prob >= old_prob) {
+ return (new_prob - old_prob) * 2;
+ }
+
+ return (old_prob - new_prob) * 2 - 1;
+}
+
+// Adjusts old_prob depending on new_prob. Based on section 6.3.5 of VP9 Specification
+s32 RemapProbability(s32 new_prob, s32 old_prob) {
+ new_prob--;
+ old_prob--;
+
+ std::size_t index{};
+
+ if (old_prob * 2 <= 0xff) {
+ index = static_cast<std::size_t>(std::max(0, RecenterNonNeg(new_prob, old_prob) - 1));
+ } else {
+ index = static_cast<std::size_t>(
+ std::max(0, RecenterNonNeg(0xff - 1 - new_prob, 0xff - 1 - old_prob) - 1));
+ }
+
+ return map_lut[index];
+}
} // Anonymous namespace
VP9::VP9(GPU& gpu) : gpu(gpu) {}
@@ -236,32 +290,6 @@ void VP9::WriteProbabilityDelta(VpxRangeEncoder& writer, u8 new_prob, u8 old_pro
EncodeTermSubExp(writer, delta);
}
-s32 VP9::RemapProbability(s32 new_prob, s32 old_prob) {
- new_prob--;
- old_prob--;
-
- std::size_t index{};
-
- if (old_prob * 2 <= 0xff) {
- index = static_cast<std::size_t>(std::max(0, RecenterNonNeg(new_prob, old_prob) - 1));
- } else {
- index = static_cast<std::size_t>(
- std::max(0, RecenterNonNeg(0xff - 1 - new_prob, 0xff - 1 - old_prob) - 1));
- }
-
- return map_lut[index];
-}
-
-s32 VP9::RecenterNonNeg(s32 new_prob, s32 old_prob) {
- if (new_prob > old_prob * 2) {
- return new_prob;
- } else if (new_prob >= old_prob) {
- return (new_prob - old_prob) * 2;
- } else {
- return (old_prob - new_prob) * 2 - 1;
- }
-}
-
void VP9::EncodeTermSubExp(VpxRangeEncoder& writer, s32 value) {
if (WriteLessThan(writer, value, 16)) {
writer.Write(value, 4);
@@ -361,28 +389,6 @@ void VP9::WriteMvProbabilityUpdate(VpxRangeEncoder& writer, u8 new_prob, u8 old_
}
}
-s32 VP9::CalcMinLog2TileCols(s32 frame_width) {
- const s32 sb64_cols = (frame_width + 63) / 64;
- s32 min_log2 = 0;
-
- while ((64 << min_log2) < sb64_cols) {
- min_log2++;
- }
-
- return min_log2;
-}
-
-s32 VP9::CalcMaxLog2TileCols(s32 frameWidth) {
- const s32 sb64_cols = (frameWidth + 63) / 64;
- s32 max_log2 = 1;
-
- while ((sb64_cols >> max_log2) >= 4) {
- max_log2++;
- }
-
- return max_log2 - 1;
-}
-
Vp9PictureInfo VP9::GetVp9PictureInfo(const NvdecCommon::NvdecRegisters& state) {
PictureInfo picture_info{};
gpu.MemoryManager().ReadBlock(state.picture_info_offset, &picture_info, sizeof(PictureInfo));
diff --git a/src/video_core/command_classes/codecs/vp9.h b/src/video_core/command_classes/codecs/vp9.h
index dc52ddbde..3826f2c95 100644
--- a/src/video_core/command_classes/codecs/vp9.h
+++ b/src/video_core/command_classes/codecs/vp9.h
@@ -121,12 +121,6 @@ private:
/// Generates compressed header probability deltas in the bitstream writer
void WriteProbabilityDelta(VpxRangeEncoder& writer, u8 new_prob, u8 old_prob);
- /// Adjusts old_prob depending on new_prob. Based on section 6.3.5 of VP9 Specification
- s32 RemapProbability(s32 new_prob, s32 old_prob);
-
- /// Recenters probability. Based on section 6.3.6 of VP9 Specification
- s32 RecenterNonNeg(s32 new_prob, s32 old_prob);
-
/// Inverse of 6.3.4 Decode term subexp
void EncodeTermSubExp(VpxRangeEncoder& writer, s32 value);
@@ -146,10 +140,6 @@ private:
/// Write motion vector probability updates. 6.3.17 in the spec
void WriteMvProbabilityUpdate(VpxRangeEncoder& writer, u8 new_prob, u8 old_prob);
- /// 6.2.14 Tile size calculation
- s32 CalcMinLog2TileCols(s32 frame_width);
- s32 CalcMaxLog2TileCols(s32 frame_width);
-
/// Returns VP9 information from NVDEC provided offset and size
Vp9PictureInfo GetVp9PictureInfo(const NvdecCommon::NvdecRegisters& state);