[x265] [PATCH] Fix: Segmentation fault for hist-scenecut option in 16bpp builds
srikanth.kurapati at multicorewareinc.com
srikanth.kurapati at multicorewareinc.com
Thu Feb 13 07:44:35 CET 2020
# HG changeset patch
# User Srikanth Kurapati
# Date 1580113966 -19800
# Mon Jan 27 14:02:46 2020 +0530
# Node ID 69c14085a001162da70cab32188b10c1d7258dd2
# Parent 30d303b38c7bd1733aedd01a3f738fb08ec1488c
Fix: Segmentation fault for hist-scenecut option in 16bpp builds.
This patch fixes segmentation fault and incorrect edge computation due to bit
depth mismatch between source input and x265 builds encountered using hist-scene
cut option.
diff -r 30d303b38c7b -r 69c14085a001 source/common/common.h
--- a/source/common/common.h Wed Jan 29 12:19:07 2020 +0530
+++ b/source/common/common.h Mon Jan 27 14:02:46 2020 +0530
@@ -131,7 +131,6 @@
typedef int64_t ssum2_t;
#define SHIFT_TO_BITPLANE 9
#define HISTOGRAM_BINS 1024
-#define SHIFT 1
#else
typedef uint8_t pixel;
typedef uint16_t sum_t;
@@ -140,7 +139,6 @@
typedef int32_t ssum2_t; // Signed sum
#define SHIFT_TO_BITPLANE 7
#define HISTOGRAM_BINS 256
-#define SHIFT 0
#endif // if HIGH_BIT_DEPTH
#if X265_DEPTH < 10
diff -r 30d303b38c7b -r 69c14085a001 source/encoder/encoder.cpp
--- a/source/encoder/encoder.cpp Wed Jan 29 12:19:07 2020 +0530
+++ b/source/encoder/encoder.cpp Mon Jan 27 14:02:46 2020 +0530
@@ -220,9 +220,9 @@
{
for (int i = 0; i < x265_cli_csps[m_param->internalCsp].planes; i++)
{
- m_planeSizes[i] = m_param->sourceWidth * m_param->sourceHeight >> x265_cli_csps[m_param->internalCsp].height[i];
- }
- uint32_t pixelbytes = m_param->sourceBitDepth > 8 ? 2 : 1;
+ m_planeSizes[i] = (m_param->sourceWidth >> x265_cli_csps[p->internalCsp].width[i]) * (m_param->sourceHeight >> x265_cli_csps[m_param->internalCsp].height[i]);
+ }
+ uint32_t pixelbytes = m_param->internalBitDepth > 8 ? 2 : 1;
m_edgePic = X265_MALLOC(pixel, m_planeSizes[0] * pixelbytes);
m_edgeHistThreshold = m_param->edgeTransitionThreshold;
m_chromaHistThreshold = m_edgeHistThreshold * 10.0;
@@ -231,6 +231,23 @@
m_scaledEdgeThreshold = x265_min(m_scaledEdgeThreshold, MAX_SCENECUT_THRESHOLD);
m_scaledChromaThreshold = m_chromaHistThreshold * SCENECUT_STRENGTH_FACTOR;
m_scaledChromaThreshold = x265_min(m_scaledChromaThreshold, MAX_SCENECUT_THRESHOLD);
+ if (m_param->sourceBitDepth != m_param->internalBitDepth)
+ {
+ int size = m_param->sourceWidth * m_param->sourceHeight;
+ int hshift = CHROMA_H_SHIFT(m_param->internalCsp);
+ int vshift = CHROMA_V_SHIFT(m_param->internalCsp);
+ int widthC = m_param->sourceWidth >> hshift;
+ int heightC = m_param->sourceHeight >> vshift;
+
+ m_inputPic[0] = X265_MALLOC(pixel, size);
+ if (m_param->internalCsp != X265_CSP_I400)
+ {
+ for (int j = 1; j < 3; j++)
+ {
+ m_inputPic[j] = X265_MALLOC(pixel, widthC * heightC);
+ }
+ }
+ }
}
// Do not allow WPP if only one row or fewer than 3 columns, it is pointless and unstable
@@ -874,6 +891,18 @@
{
X265_FREE_ZERO(m_edgePic);
}
+
+ if (m_param->sourceBitDepth != m_param->internalBitDepth)
+ {
+ X265_FREE_ZERO(m_inputPic[0]);
+ if (m_param->internalCsp != X265_CSP_I400)
+ {
+ for (int i = 1; i < 3; i++)
+ {
+ X265_FREE_ZERO(m_inputPic[i]);
+ }
+ }
+ }
}
for (int i = 0; i < m_param->frameNumThreads; i++)
@@ -1337,11 +1366,82 @@
bool Encoder::computeHistograms(x265_picture *pic)
{
- pixel *src = (pixel *) pic->planes[0];
+ pixel *src = NULL, *planeV = NULL, *planeU = NULL;
+ uint32_t widthC, heightC;
+ int hshift, vshift;
+
+ hshift = CHROMA_H_SHIFT(pic->colorSpace);
+ vshift = CHROMA_V_SHIFT(pic->colorSpace);
+ widthC = pic->width >> hshift;
+ heightC = pic->height >> vshift;
+
+ if (pic->bitDepth == X265_DEPTH)
+ {
+ src = (pixel*)pic->planes[0];
+ if (m_param->internalCsp != X265_CSP_I400)
+ {
+ planeU = (pixel*)pic->planes[1];
+ planeV = (pixel*)pic->planes[2];
+ }
+ }
+ else if (pic->bitDepth == 8 && X265_DEPTH > 8)
+ {
+ int shift = (X265_DEPTH - 8);
+ uint8_t *yChar, *uChar, *vChar;
+
+ yChar = (uint8_t*)pic->planes[0];
+ primitives.planecopy_cp(yChar, pic->stride[0] / sizeof(*yChar), m_inputPic[0], pic->stride[0] / sizeof(*yChar), pic->width, pic->height, shift);
+ src = m_inputPic[0];
+ if (m_param->internalCsp != X265_CSP_I400)
+ {
+ uChar = (uint8_t*)pic->planes[1];
+ vChar = (uint8_t*)pic->planes[2];
+ primitives.planecopy_cp(uChar, pic->stride[1] / sizeof(*uChar), m_inputPic[1], pic->stride[1] / sizeof(*uChar), widthC, heightC, shift);
+ primitives.planecopy_cp(vChar, pic->stride[2] / sizeof(*vChar), m_inputPic[2], pic->stride[2] / sizeof(*vChar), widthC, heightC, shift);
+ planeU = m_inputPic[1];
+ planeV = m_inputPic[2];
+ }
+ }
+ else
+ {
+ uint16_t *yShort, *uShort, *vShort;
+ /* mask off bits that are supposed to be zero */
+ uint16_t mask = (1 << X265_DEPTH) - 1;
+ int shift = abs(pic->bitDepth - X265_DEPTH);
+
+ yShort = (uint16_t*)pic->planes[0];
+ uShort = (uint16_t*)pic->planes[1];
+ vShort = (uint16_t*)pic->planes[2];
+
+ if (pic->bitDepth > X265_DEPTH)
+ {
+ /* shift right and mask pixels to final size */
+ primitives.planecopy_sp(yShort, pic->stride[0] / sizeof(*yShort), m_inputPic[0], pic->stride[0] / sizeof(*yShort), pic->width, pic->height, shift, mask);
+ if (m_param->internalCsp != X265_CSP_I400)
+ {
+ primitives.planecopy_sp(uShort, pic->stride[1] / sizeof(*uShort), m_inputPic[1], pic->stride[1] / sizeof(*uShort), widthC, heightC, shift, mask);
+ primitives.planecopy_sp(vShort, pic->stride[2] / sizeof(*vShort), m_inputPic[2], pic->stride[2] / sizeof(*vShort), widthC, heightC, shift, mask);
+ }
+ }
+ else /* Case for (pic.bitDepth < X265_DEPTH) */
+ {
+ /* shift left and mask pixels to final size */
+ primitives.planecopy_sp_shl(yShort, pic->stride[0] / sizeof(*yShort), m_inputPic[0], pic->stride[0] / sizeof(*yShort), pic->width, pic->height, shift, mask);
+ if (m_param->internalCsp != X265_CSP_I400)
+ {
+ primitives.planecopy_sp_shl(uShort, pic->stride[1] / sizeof(*uShort), m_inputPic[1], pic->stride[1] / sizeof(*uShort), widthC, heightC, shift, mask);
+ primitives.planecopy_sp_shl(vShort, pic->stride[2] / sizeof(*vShort), m_inputPic[2], pic->stride[2] / sizeof(*vShort), widthC, heightC, shift, mask);
+ }
+ }
+
+ src = m_inputPic[0];
+ planeU = m_inputPic[1];
+ planeV = m_inputPic[2];
+ }
+
size_t bufSize = sizeof(pixel) * m_planeSizes[0];
int32_t planeCount = x265_cli_csps[m_param->internalCsp].planes;
- int32_t numBytes = m_param->sourceBitDepth > 8 ? 2 : 1;
- memset(m_edgePic, 0, bufSize * numBytes);
+ memset(m_edgePic, 0, bufSize);
if (!computeEdge(m_edgePic, src, NULL, pic->width, pic->height, pic->width, false, 1))
{
@@ -1350,10 +1450,9 @@
}
pixel pixelVal;
- int64_t size = pic->height * (pic->stride[0] >> SHIFT);
int32_t *edgeHist = m_curEdgeHist;
memset(edgeHist, 0, 2 * sizeof(int32_t));
- for (int64_t i = 0; i < size; i++)
+ for (int64_t i = 0; i < m_planeSizes[0]; i++)
{
if (!m_edgePic[i])
edgeHist[0]++;
@@ -1364,16 +1463,12 @@
if (pic->colorSpace != X265_CSP_I400)
{
/* U Histogram Calculation */
- int32_t HeightL = (pic->height >> x265_cli_csps[pic->colorSpace].height[1]);
- size = HeightL * (pic->stride[1] >> SHIFT);
int32_t *uHist = m_curUVHist[0];
- pixel *chromaPlane = (pixel *) pic->planes[1];
-
memset(uHist, 0, HISTOGRAM_BINS * sizeof(int32_t));
- for (int64_t i = 0; i < size; i++)
- {
- pixelVal = chromaPlane[i];
+ for (int64_t i = 0; i < m_planeSizes[1]; i++)
+ {
+ pixelVal = planeU[i];
uHist[pixelVal]++;
}
@@ -1381,15 +1476,12 @@
if (planeCount == 3)
{
pixelVal = 0;
- int32_t heightV = (pic->height >> x265_cli_csps[pic->colorSpace].height[2]);
- size = heightV * (pic->stride[2] >> SHIFT);
int32_t *vHist = m_curUVHist[1];
- chromaPlane = (pixel *) pic->planes[2];
-
memset(vHist, 0, HISTOGRAM_BINS * sizeof(int32_t));
- for (int64_t i = 0; i < size; i++)
+
+ for (int64_t i = 0; i < m_planeSizes[2]; i++)
{
- pixelVal = chromaPlane[i];
+ pixelVal = planeV[i];
vHist[pixelVal]++;
}
for (int i = 0; i < HISTOGRAM_BINS; i++)
diff -r 30d303b38c7b -r 69c14085a001 source/encoder/encoder.h
--- a/source/encoder/encoder.h Wed Jan 29 12:19:07 2020 +0530
+++ b/source/encoder/encoder.h Mon Jan 27 14:02:46 2020 +0530
@@ -255,6 +255,7 @@
/* For histogram based scene-cut detection */
pixel* m_edgePic;
+ pixel* m_inputPic[3];
int32_t m_curUVHist[2][HISTOGRAM_BINS];
int32_t m_curMaxUVHist[HISTOGRAM_BINS];
int32_t m_prevMaxUVHist[HISTOGRAM_BINS];
-------------- next part --------------
A non-text attachment was scrubbed...
Name: x265-final.patch
Type: text/x-patch
Size: 9646 bytes
Desc: not available
URL: <http://mailman.videolan.org/pipermail/x265-devel/attachments/20200213/8f386383/attachment.bin>
More information about the x265-devel
mailing list