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Separate alpha handling for planar codec

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If the destination does not support an alpha channel ignore it
when decoding and prevent data to be copied unnecessarily
This commit is contained in:
Armin Novak 2018-10-16 12:17:25 +02:00
parent a29bc16af4
commit 91107beb67
1 changed files with 23 additions and 31 deletions
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54
libfreerdp/codec/planar.c
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@ -282,7 +282,7 @@ static INLINE BOOL writeLine(BYTE** ppRgba, UINT32 DstFormat, UINT32 width, cons
static INLINE BOOL planar_decompress_planes_raw(const BYTE* pSrcData[4],
BYTE* pDstData, UINT32 DstFormat,
UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst, UINT32 nWidth, UINT32 nHeight,
BOOL alpha, BOOL vFlip)
BOOL vFlip)
{
INT32 y;
INT32 beg, end, inc;
@ -304,27 +304,13 @@ static INLINE BOOL planar_decompress_planes_raw(const BYTE* pSrcData[4],
inc = 1;
}
if (alpha)
for (y = beg; y != end; y += inc)
{
for (y = beg; y != end; y += inc)
{
BYTE* pRGB = &pDstData[((nYDst + y) * nDstStep) + (nXDst * GetBytesPerPixel(
DstFormat))];
BYTE* pRGB = &pDstData[((nYDst + y) * nDstStep) + (nXDst * GetBytesPerPixel(
DstFormat))];
if (!writeLine(&pRGB, DstFormat, nWidth, &pR, &pG, &pB, &pA))
return FALSE;
}
}
else
{
for (y = beg; y != end; y += inc)
{
BYTE* pRGB = &pDstData[((nYDst + y) * nDstStep) + (nXDst * GetBytesPerPixel(
DstFormat))];
if (!writeLine(&pRGB, DstFormat, nWidth, &pR, &pG, &pB, &pA))
return FALSE;
}
if (!writeLine(&pRGB, DstFormat, nWidth, &pR, &pG, &pB, &pA))
return FALSE;
}
return TRUE;
@ -341,6 +327,7 @@ BOOL planar_decompress(BITMAP_PLANAR_CONTEXT* planar,
BOOL rle;
UINT32 cll;
BOOL alpha;
BOOL useAlpha = FALSE;
INT32 status;
const BYTE* srcp;
UINT32 subSize;
@ -374,6 +361,9 @@ BOOL planar_decompress(BITMAP_PLANAR_CONTEXT* planar,
rle = (FormatHeader & PLANAR_FORMAT_HEADER_RLE) ? TRUE : FALSE;
alpha = (FormatHeader & PLANAR_FORMAT_HEADER_NA) ? FALSE : TRUE;
if (alpha)
useAlpha = ColorHasAlpha(DstFormat);
//WLog_INFO(TAG, "CLL: %"PRIu32" CS: %"PRIu8" RLE: %"PRIu8" ALPHA: %"PRIu8"", cll, cs, rle, alpha);
if (!cll && cs)
@ -486,7 +476,7 @@ BOOL planar_decompress(BITMAP_PLANAR_CONTEXT* planar,
BYTE* pTempData = pDstData;
UINT32 nTempStep = nDstStep;
if (alpha)
if (useAlpha)
TempFormat = PIXEL_FORMAT_BGRA32;
else
TempFormat = PIXEL_FORMAT_BGRX32;
@ -501,7 +491,7 @@ BOOL planar_decompress(BITMAP_PLANAR_CONTEXT* planar,
if (!rle) /* RAW */
{
if (!planar_decompress_planes_raw(planes, pTempData, TempFormat, nTempStep,
nXDst, nYDst, nSrcWidth, nSrcHeight, alpha, vFlip))
nXDst, nYDst, nSrcWidth, nSrcHeight, vFlip))
return FALSE;
if (alpha)
@ -537,7 +527,7 @@ BOOL planar_decompress(BITMAP_PLANAR_CONTEXT* planar,
srcp += rleSizes[0] + rleSizes[1] + rleSizes[2];
if (alpha)
if (useAlpha)
{
status = planar_decompress_plane_rle(planes[3], rleSizes[3],
pTempData, nTempStep, nXDst, nYDst, nSrcWidth, nSrcHeight, 3,
@ -545,9 +535,10 @@ BOOL planar_decompress(BITMAP_PLANAR_CONTEXT* planar,
if (status < 0)
return FALSE;
srcp += rleSizes[3];
}
if (alpha)
srcp += rleSizes[3];
}
if (pTempData != pDstData)
@ -564,7 +555,7 @@ BOOL planar_decompress(BITMAP_PLANAR_CONTEXT* planar,
BYTE* pTempData = planar->pTempData;
UINT32 nTempStep = planar->nTempStep;
if (alpha)
if (useAlpha)
TempFormat = PIXEL_FORMAT_BGRA32;
else
TempFormat = PIXEL_FORMAT_BGRX32;
@ -581,7 +572,7 @@ BOOL planar_decompress(BITMAP_PLANAR_CONTEXT* planar,
if (!rle) /* RAW */
{
if (!planar_decompress_planes_raw(planes, pTempData, TempFormat, nTempStep,
nXDst, nYDst, nSrcWidth, nSrcHeight, alpha, vFlip))
nXDst, nYDst, nSrcWidth, nSrcHeight, vFlip))
return FALSE;
if (alpha)
@ -594,7 +585,7 @@ BOOL planar_decompress(BITMAP_PLANAR_CONTEXT* planar,
}
else /* RLE */
{
if (alpha)
if (useAlpha)
{
status = planar_decompress_plane_rle(planes[3], rleSizes[3],
pTempData, nTempStep, nXDst, nYDst, nSrcWidth, nSrcHeight, 3,
@ -602,10 +593,11 @@ BOOL planar_decompress(BITMAP_PLANAR_CONTEXT* planar,
if (status < 0)
return FALSE;
srcp += rleSizes[3];
}
if (alpha)
srcp += rleSizes[3];
status = planar_decompress_plane_rle(planes[0], rleSizes[0],
pTempData, nTempStep, nXDst, nYDst, nSrcWidth, nSrcHeight, 2,
vFlip); /* LumaPlane */
@ -632,7 +624,7 @@ BOOL planar_decompress(BITMAP_PLANAR_CONTEXT* planar,
if (prims->YCoCgToRGB_8u_AC4R(pTempData, nTempStep, pDstData, DstFormat,
nDstStep,
w, h, cll, alpha) != PRIMITIVES_SUCCESS)
w, h, cll, useAlpha) != PRIMITIVES_SUCCESS)
return FALSE;
}