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Qt: Refactor PNG savestate code for slightly better behavior

This commit is contained in:
Jeffrey Pfau 2015-05-02 01:13:56 -07:00
parent 07a3d08b26
commit d37cf5f0c3
1 changed files with 17 additions and 6 deletions
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23
src/gba/serialize.c
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@ -135,20 +135,31 @@ static bool _savePNGState(struct GBA* gba, struct VFile* vf) {
}
struct GBASerializedState* state = GBAAllocateState();
if (!state) {
return false;
}
png_structp png = PNGWriteOpen(vf);
png_infop info = PNGWriteHeader(png, VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS);
if (!png || !info) {
PNGWriteClose(png, info);
GBADeallocateState(state);
return false;
}
uLongf len = compressBound(sizeof(*state));
void* buffer = malloc(len);
if (state && png && info && buffer) {
GBASerialize(gba, state);
compress(buffer, &len, (const Bytef*) state, sizeof(*state));
PNGWritePixels(png, VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS, stride, pixels);
PNGWriteCustomChunk(png, "gbAs", len, buffer);
if (!buffer) {
PNGWriteClose(png, info);
GBADeallocateState(state);
return false;
}
GBASerialize(gba, state);
compress(buffer, &len, (const Bytef*) state, sizeof(*state));
PNGWritePixels(png, VIDEO_HORIZONTAL_PIXELS, VIDEO_VERTICAL_PIXELS, stride, pixels);
PNGWriteCustomChunk(png, "gbAs", len, buffer);
PNGWriteClose(png, info);
free(buffer);
GBADeallocateState(state);
return state && png && info && buffer;
return true;
}
static int _loadPNGChunkHandler(png_structp png, png_unknown_chunkp chunk) {