get rid of PixelFormatInfo and simplify things

Change-Id: I025a362cc12d5b9b794fac14be500e25aab65396

5 files changed, 47 insertions, 183 deletions

diff --git a/include/ui/DisplayInfo.h b/include/ui/DisplayInfo.h
index c3a4d6b..2853e06 100644
--- a/include/ui/DisplayInfo.h
+++ b/include/ui/DisplayInfo.h
@@ -34,8 +34,6 @@ struct DisplayInfo {
     uint8_t orientation;
     bool secure;
     uint8_t reserved[2];
-    // TODO: this needs to go away (currently needed only by webkit)
-    PixelFormatInfo pixelFormatInfo;
 };
 
 /* Display orientations as defined in Surface.java and ISurfaceComposer.h. */
diff --git a/include/ui/PixelFormat.h b/include/ui/PixelFormat.h
index 7b3a6de..d06728b 100644
--- a/include/ui/PixelFormat.h
+++ b/include/ui/PixelFormat.h
@@ -67,60 +67,8 @@ enum {
 
 typedef int32_t PixelFormat;
 
-struct PixelFormatInfo {
-    enum {
-        INDEX_ALPHA   = 0,
-        INDEX_RED     = 1,
-        INDEX_GREEN   = 2,
-        INDEX_BLUE    = 3
-    };
-
-    enum { // components
-        ALPHA   = 1,
-        RGB     = 2,
-        RGBA    = 3,
-        L       = 4,
-        LA      = 5,
-        OTHER   = 0xFF
-    };
-
-    struct szinfo {
-        uint8_t h;
-        uint8_t l;
-    };
-
-    inline PixelFormatInfo() : version(sizeof(PixelFormatInfo)) { }
-    size_t getScanlineSize(unsigned int width) const;
-    size_t getSize(size_t ci) const {
-        return (ci <= 3) ? (cinfo[ci].h - cinfo[ci].l) : 0;
-    }
-    size_t      version;
-    PixelFormat format;
-    size_t      bytesPerPixel;
-    size_t      bitsPerPixel;
-    union {
-        szinfo      cinfo[4];
-        struct {
-            uint8_t     h_alpha;
-            uint8_t     l_alpha;
-            uint8_t     h_red;
-            uint8_t     l_red;
-            uint8_t     h_green;
-            uint8_t     l_green;
-            uint8_t     h_blue;
-            uint8_t     l_blue;
-        };
-    };
-    uint8_t     components;
-    uint8_t     reserved0[3];
-    uint32_t    reserved1;
-};
-
-// Consider caching the results of these functions are they're not
-// guaranteed to be fast.
-ssize_t     bytesPerPixel(PixelFormat format);
-ssize_t     bitsPerPixel(PixelFormat format);
-status_t    getPixelFormatInfo(PixelFormat format, PixelFormatInfo* info);
+ssize_t bytesPerPixel(PixelFormat format);
+ssize_t bitsPerPixel(PixelFormat format);
 
 }; // namespace android
 
diff --git a/libs/ui/PixelFormat.cpp b/libs/ui/PixelFormat.cpp
index 3ced41d..15e99ab 100644
--- a/libs/ui/PixelFormat.cpp
+++ b/libs/ui/PixelFormat.cpp
@@ -21,123 +21,46 @@
 namespace android {
 // ----------------------------------------------------------------------------
 
-static const int COMPONENT_YUV = 0xFF;
-
-struct Info {
-    size_t      size;
-    size_t      bitsPerPixel;
-    struct {
-        uint8_t     ah;
-        uint8_t     al;
-        uint8_t     rh;
-        uint8_t     rl;
-        uint8_t     gh;
-        uint8_t     gl;
-        uint8_t     bh;
-        uint8_t     bl;
-    };
-    uint8_t     components;
-};
-
-static Info const sPixelFormatInfos[] = {
-        { 0,  0, { 0, 0,   0, 0,   0, 0,   0, 0 }, 0 },
-        { 4, 32, {32,24,   8, 0,  16, 8,  24,16 }, PixelFormatInfo::RGBA },
-        { 4, 24, { 0, 0,   8, 0,  16, 8,  24,16 }, PixelFormatInfo::RGB  },
-        { 3, 24, { 0, 0,   8, 0,  16, 8,  24,16 }, PixelFormatInfo::RGB  },
-        { 2, 16, { 0, 0,  16,11,  11, 5,   5, 0 }, PixelFormatInfo::RGB  },
-        { 4, 32, {32,24,  24,16,  16, 8,   8, 0 }, PixelFormatInfo::RGBA },
-        { 2, 16, { 1, 0,  16,11,  11, 6,   6, 1 }, PixelFormatInfo::RGBA },
-        { 2, 16, { 4, 0,  16,12,  12, 8,   8, 4 }, PixelFormatInfo::RGBA },
-        { 1,  8, { 8, 0,   0, 0,   0, 0,   0, 0 }, PixelFormatInfo::ALPHA},
-        { 1,  8, { 0, 0,   8, 0,   8, 0,   8, 0 }, PixelFormatInfo::L    },
-        { 2, 16, {16, 8,   8, 0,   8, 0,   8, 0 }, PixelFormatInfo::LA   },
-        { 1,  8, { 0, 0,   8, 5,   5, 2,   2, 0 }, PixelFormatInfo::RGB  },
-};
-
-static const Info* gGetPixelFormatTable(size_t* numEntries) {
-    if (numEntries) {
-        *numEntries = sizeof(sPixelFormatInfos)/sizeof(Info);
-    }
-    return sPixelFormatInfos;
-}
-
-// ----------------------------------------------------------------------------
-
-size_t PixelFormatInfo::getScanlineSize(unsigned int width) const
-{
-    size_t size;
-    if (components == COMPONENT_YUV) {
-        // YCbCr formats are different.
-        size = (width * bitsPerPixel)>>3;
-    } else {
-        size = width * bytesPerPixel;
+ssize_t bytesPerPixel(PixelFormat format) {
+    switch (format) {
+        case HAL_PIXEL_FORMAT_RGBA_8888:
+        case HAL_PIXEL_FORMAT_RGBX_8888:
+        case HAL_PIXEL_FORMAT_BGRA_8888:
+            return 4;
+        case HAL_PIXEL_FORMAT_RGB_888:
+            return 3;
+        case HAL_PIXEL_FORMAT_RGB_565:
+        case HAL_PIXEL_FORMAT_RGBA_5551:
+        case HAL_PIXEL_FORMAT_RGBA_4444:
+            return 2;
+        case HAL_PIXEL_FORMAT_YCbCr_422_SP:
+        case HAL_PIXEL_FORMAT_YCbCr_422_I:
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
+        case HAL_PIXEL_FORMAT_YV12:
+            return 1;
     }
-    return size;
+    return BAD_VALUE;
 }
 
-ssize_t bytesPerPixel(PixelFormat format)
-{
-    PixelFormatInfo info;
-    status_t err = getPixelFormatInfo(format, &info);
-    return (err < 0) ? err : info.bytesPerPixel;
-}
-
-ssize_t bitsPerPixel(PixelFormat format)
-{
-    PixelFormatInfo info;
-    status_t err = getPixelFormatInfo(format, &info);
-    return (err < 0) ? err : info.bitsPerPixel;
-}
-
-status_t getPixelFormatInfo(PixelFormat format, PixelFormatInfo* info)
-{
-    if (format <= 0)
-        return BAD_VALUE;
-
-    if (info->version != sizeof(PixelFormatInfo))
-        return INVALID_OPERATION;
-
-    // YUV format from the HAL are handled here
+ssize_t bitsPerPixel(PixelFormat format) {
     switch (format) {
-    case HAL_PIXEL_FORMAT_YCbCr_422_SP:
-    case HAL_PIXEL_FORMAT_YCbCr_422_I:
-        info->bitsPerPixel = 16;
-        goto done;
-    case HAL_PIXEL_FORMAT_YCrCb_420_SP:
-    case HAL_PIXEL_FORMAT_YV12:
-        info->bitsPerPixel = 12;
-     done:
-        info->format = format;
-        info->components = COMPONENT_YUV;
-        info->bytesPerPixel = 1;
-        info->h_alpha = 0;
-        info->l_alpha = 0;
-        info->h_red = info->h_green = info->h_blue = 8;
-        info->l_red = info->l_green = info->l_blue = 0;
-        return NO_ERROR;
+        case HAL_PIXEL_FORMAT_RGBA_8888:
+        case HAL_PIXEL_FORMAT_RGBX_8888:
+        case HAL_PIXEL_FORMAT_BGRA_8888:
+            return 32;
+        case HAL_PIXEL_FORMAT_RGB_888:
+            return 24;
+        case HAL_PIXEL_FORMAT_RGB_565:
+        case HAL_PIXEL_FORMAT_RGBA_5551:
+        case HAL_PIXEL_FORMAT_RGBA_4444:
+        case HAL_PIXEL_FORMAT_YCbCr_422_SP:
+        case HAL_PIXEL_FORMAT_YCbCr_422_I:
+            return 16;
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
+        case HAL_PIXEL_FORMAT_YV12:
+            return 12;
     }
-
-    size_t numEntries;
-    const Info *i = gGetPixelFormatTable(&numEntries) + format;
-    bool valid = uint32_t(format) < numEntries;
-    if (!valid) {
-        return BAD_INDEX;
-    }
-
-    info->format = format;
-    info->bytesPerPixel = i->size;
-    info->bitsPerPixel  = i->bitsPerPixel;
-    info->h_alpha       = i->ah;
-    info->l_alpha       = i->al;
-    info->h_red         = i->rh;
-    info->l_red         = i->rl;
-    info->h_green       = i->gh;
-    info->l_green       = i->gl;
-    info->h_blue        = i->bh;
-    info->l_blue        = i->bl;
-    info->components    = i->components;
-
-    return NO_ERROR;
+    return BAD_VALUE;
 }
 
 // ----------------------------------------------------------------------------
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 7f2ce2b..1a25abe 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -176,14 +176,6 @@ const String8& Layer::getName() const {
 status_t Layer::setBuffers( uint32_t w, uint32_t h,
                             PixelFormat format, uint32_t flags)
 {
-    // this surfaces pixel format
-    PixelFormatInfo info;
-    status_t err = getPixelFormatInfo(format, &info);
-    if (err) {
-        ALOGE("unsupported pixelformat %d", format);
-        return err;
-    }
-
     uint32_t const maxSurfaceDims = min(
             mFlinger->getMaxTextureSize(), mFlinger->getMaxViewportDims());
 
@@ -583,15 +575,19 @@ bool Layer::getFiltering() const {
 // hardware.h, instead of using hard-coded values here.
 #define HARDWARE_IS_DEVICE_FORMAT(f) ((f) >= 0x100 && (f) <= 0x1FF)
 
-bool Layer::getOpacityForFormat(uint32_t format)
-{
+bool Layer::getOpacityForFormat(uint32_t format) {
     if (HARDWARE_IS_DEVICE_FORMAT(format)) {
         return true;
     }
-    PixelFormatInfo info;
-    status_t err = getPixelFormatInfo(PixelFormat(format), &info);
-    // in case of error (unknown format), we assume no blending
-    return (err || info.h_alpha <= info.l_alpha);
+    switch (format) {
+        case HAL_PIXEL_FORMAT_RGBA_8888:
+        case HAL_PIXEL_FORMAT_BGRA_8888:
+        case HAL_PIXEL_FORMAT_RGBA_5551:
+        case HAL_PIXEL_FORMAT_RGBA_4444:
+            return true;
+    }
+    // in all other case, we have no blending (also for unknown formats)
+    return false;
 }
 
 // ----------------------------------------------------------------------------
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index cbdcd12..850bb21 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -566,7 +566,6 @@ status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo*
         // TODO: this needs to go away (currently needed only by webkit)
         sp<const DisplayDevice> hw(getDefaultDisplayDevice());
         info->orientation = hw->getOrientation();
-        getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo);
     } else {
         // TODO: where should this value come from?
         static const int TV_DENSITY = 213;