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am f7c3679f: Merge change 25158 into eclair

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Merge commit 'f7c3679f898cdcb208bc1675c79573e1d637083a' into eclair-plus-aosp

* commit 'f7c3679f898cdcb208bc1675c79573e1d637083a':
  Another software color conversion implementation, this time OMX_QCOM_COLOR_FormatYVU420SemiPlanar => rgb565.
This commit is contained in:
Andreas Huber
2009-09-16 10:08:13 -07:00
committed by Android Git Automerger
parent bbfbf187ef f7c3679f89
commit 51173401f4
2 changed files with 76 additions and 0 deletions
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1
include/media/stagefright/SoftwareRenderer.h
View File

@@ -45,6 +45,7 @@ private:
void renderCbYCrY(const void *data, size_t size);
void renderYUV420Planar(const void *data, size_t size);
void renderQCOMYUV420SemiPlanar(const void *data, size_t size);
OMX_COLOR_FORMATTYPE mColorFormat;
sp<ISurface> mISurface;

75
media/libstagefright/omx/SoftwareRenderer.cpp
View File

@@ -65,6 +65,8 @@ SoftwareRenderer::~SoftwareRenderer() {
void SoftwareRenderer::render(
const void *data, size_t size, void *platformPrivate) {
static const int OMX_QCOM_COLOR_FormatYVU420SemiPlanar = 0x7FA30C00;
switch (mColorFormat) {
case OMX_COLOR_FormatYUV420Planar:
return renderYUV420Planar(data, size);
@@ -72,6 +74,9 @@ void SoftwareRenderer::render(
case OMX_COLOR_FormatCbYCrY:
return renderCbYCrY(data, size);
case OMX_QCOM_COLOR_FormatYVU420SemiPlanar:
return renderQCOMYUV420SemiPlanar(data, size);
default:
{
LOGW("Cannot render color format %ld", mColorFormat);
@@ -242,6 +247,76 @@ void SoftwareRenderer::renderCbYCrY(
mIndex = 1 - mIndex;
}
void SoftwareRenderer::renderQCOMYUV420SemiPlanar(
const void *data, size_t size) {
if (size != (mDecodedHeight * mDecodedWidth * 3) / 2) {
LOGE("size is %d, expected %d",
size, (mDecodedHeight * mDecodedWidth * 3) / 2);
}
CHECK(size >= (mDecodedWidth * mDecodedHeight * 3) / 2);
uint8_t *kAdjustedClip = initClip();
size_t offset = mIndex * mFrameSize;
void *dst = (uint8_t *)mMemoryHeap->getBase() + offset;
uint32_t *dst_ptr = (uint32_t *)dst;
const uint8_t *src_y = (const uint8_t *)data;
const uint8_t *src_u =
(const uint8_t *)src_y + mDecodedWidth * mDecodedHeight;
for (size_t y = 0; y < mDecodedHeight; ++y) {
for (size_t x = 0; x < mDecodedWidth; x += 2) {
signed y1 = (signed)src_y[x] - 16;
signed y2 = (signed)src_y[x + 1] - 16;
signed u = (signed)src_u[x & ~1] - 128;
signed v = (signed)src_u[(x & ~1) + 1] - 128;
signed u_b = u * 517;
signed u_g = -u * 100;
signed v_g = -v * 208;
signed v_r = v * 409;
signed tmp1 = y1 * 298;
signed b1 = (tmp1 + u_b) / 256;
signed g1 = (tmp1 + v_g + u_g) / 256;
signed r1 = (tmp1 + v_r) / 256;
signed tmp2 = y2 * 298;
signed b2 = (tmp2 + u_b) / 256;
signed g2 = (tmp2 + v_g + u_g) / 256;
signed r2 = (tmp2 + v_r) / 256;
uint32_t rgb1 =
((kAdjustedClip[b1] >> 3) << 11)
| ((kAdjustedClip[g1] >> 2) << 5)
| (kAdjustedClip[r1] >> 3);
uint32_t rgb2 =
((kAdjustedClip[b2] >> 3) << 11)
| ((kAdjustedClip[g2] >> 2) << 5)
| (kAdjustedClip[r2] >> 3);
dst_ptr[x / 2] = (rgb2 << 16) | rgb1;
}
src_y += mDecodedWidth;
if (y & 1) {
src_u += mDecodedWidth;
}
dst_ptr += mDecodedWidth / 2;
}
mISurface->postBuffer(offset);
mIndex = 1 - mIndex;
}
uint8_t *SoftwareRenderer::initClip() {
static const signed kClipMin = -278;
static const signed kClipMax = 535;