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add optional Format* parameter to decoder helper functions.

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git-svn-id: http://skia.googlecode.com/svn/trunk@215 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
reed@android.com 2009-06-15 13:04:45 +00:00
parent 5119bdb952
commit b3ade9d1b0
4 changed files with 35 additions and 22 deletions
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38
include/images/SkImageDecoder.h
View File

@ -160,12 +160,16 @@ public:
there is a conflict (e.g. the image has per-pixel alpha and the bitmap's
config does not support that), in which case the decoder will choose a
closest match configuration.
@param format On success, if format is non-null, it is set to the format
of the decoded file. On failure it is ignored.
*/
static bool DecodeFile(const char file[], SkBitmap* bitmap,
SkBitmap::Config prefConfig, Mode);
static bool DecodeFile(const char file[], SkBitmap* bitmap)
{
return DecodeFile(file, bitmap, SkBitmap::kNo_Config, kDecodePixels_Mode);
SkBitmap::Config prefConfig, Mode,
Format* format);
static bool DecodeFile(const char file[], SkBitmap* bitmap) {
return DecodeFile(file, bitmap, SkBitmap::kNo_Config,
kDecodePixels_Mode, NULL);
}
/** Decode the image stored in the specified memory buffer, and store the
result in bitmap. Return true for success or false on failure.
@ -176,13 +180,16 @@ public:
there is a conflict (e.g. the image has per-pixel alpha and the bitmap's
config does not support that), in which case the decoder will choose a
closest match configuration.
*/
@param format On success, if format is non-null, it is set to the format
of the decoded buffer. On failure it is ignored.
*/
static bool DecodeMemory(const void* buffer, size_t size, SkBitmap* bitmap,
SkBitmap::Config prefConfig, Mode);
static bool DecodeMemory(const void* buffer, size_t size, SkBitmap* bitmap)
{
SkBitmap::Config prefConfig, Mode,
Format* format);
static bool DecodeMemory(const void* buffer, size_t size, SkBitmap* bitmap){
return DecodeMemory(buffer, size, bitmap, SkBitmap::kNo_Config,
kDecodePixels_Mode);
kDecodePixels_Mode, NULL);
}
/** Decode the image stored in the specified SkStream, and store the result
in bitmap. Return true for success or false on failure.
@ -193,13 +200,16 @@ public:
format, unless there is a conflict (e.g. the image has per-pixel alpha
and the bitmap's config does not support that), in which case the
decoder will choose a closest match configuration.
*/
@param format On success, if format is non-null, it is set to the format
of the decoded stream. On failure it is ignored.
*/
static bool DecodeStream(SkStream* stream, SkBitmap* bitmap,
SkBitmap::Config prefConfig, Mode);
static bool DecodeStream(SkStream* stream, SkBitmap* bitmap)
{
SkBitmap::Config prefConfig, Mode,
Format* format);
static bool DecodeStream(SkStream* stream, SkBitmap* bitmap) {
return DecodeStream(stream, bitmap, SkBitmap::kNo_Config,
kDecodePixels_Mode);
kDecodePixels_Mode, NULL);
}
/** Return the default config for the running device.

4
samplecode/SampleFilter2.cpp
View File

@ -31,12 +31,12 @@ public:
for (int i = 0; i < fBitmapCount/2; i++) {
SkImageDecoder::DecodeFile(gNames[i], &fBitmaps[i],
SkBitmap::kARGB_8888_Config,
SkImageDecoder::kDecodePixels_Mode);
SkImageDecoder::kDecodePixels_Mode, NULL);
}
for (int i = fBitmapCount/2; i < fBitmapCount; i++) {
SkImageDecoder::DecodeFile(gNames[i-fBitmapCount/2], &fBitmaps[i],
SkBitmap::kRGB_565_Config,
SkImageDecoder::kDecodePixels_Mode);
SkImageDecoder::kDecodePixels_Mode, NULL);
}
fCurrIndex = 0;
}

2
samplecode/SampleImage.cpp
View File

@ -27,7 +27,7 @@ static bool SetImageRef(SkBitmap* bitmap, SkStream* stream,
SkBitmap::Config pref, const char name[] = NULL)
{
if (SkImageDecoder::DecodeStream(stream, bitmap, pref,
SkImageDecoder::kDecodeBounds_Mode)) {
SkImageDecoder::kDecodeBounds_Mode, NULL)) {
SkASSERT(bitmap->config() != SkBitmap::kNo_Config);
SkImageRef* ref = new SkImageRef_GlobalPool(stream, bitmap->config());

13
src/images/SkImageDecoder.cpp
View File

@ -120,13 +120,13 @@ bool SkImageDecoder::decode(SkStream* stream, SkBitmap* bm,
///////////////////////////////////////////////////////////////////////////////
bool SkImageDecoder::DecodeFile(const char file[], SkBitmap* bm,
SkBitmap::Config pref, Mode mode) {
SkBitmap::Config pref, Mode mode, Format* format) {
SkASSERT(file);
SkASSERT(bm);
SkFILEStream stream(file);
if (stream.isValid()) {
if (SkImageDecoder::DecodeStream(&stream, bm, pref, mode)) {
if (SkImageDecoder::DecodeStream(&stream, bm, pref, mode, format)) {
bm->pixelRef()->setURI(file);
}
return true;
@ -135,18 +135,18 @@ bool SkImageDecoder::DecodeFile(const char file[], SkBitmap* bm,
}
bool SkImageDecoder::DecodeMemory(const void* buffer, size_t size, SkBitmap* bm,
SkBitmap::Config pref, Mode mode) {
SkBitmap::Config pref, Mode mode, Format* format) {
if (0 == size) {
return false;
}
SkASSERT(buffer);
SkMemoryStream stream(buffer, size);
return SkImageDecoder::DecodeStream(&stream, bm, pref, mode);
return SkImageDecoder::DecodeStream(&stream, bm, pref, mode, format);
}
bool SkImageDecoder::DecodeStream(SkStream* stream, SkBitmap* bm,
SkBitmap::Config pref, Mode mode) {
SkBitmap::Config pref, Mode mode, Format* format) {
SkASSERT(stream);
SkASSERT(bm);
@ -155,6 +155,9 @@ bool SkImageDecoder::DecodeStream(SkStream* stream, SkBitmap* bm,
if (NULL != codec) {
success = codec->decode(stream, bm, pref, mode);
if (success && format) {
*format = codec->getFormat();
}
delete codec;
}
return success;