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Change in lossless bit-stream.

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Change the lossless signature to 0x2f
Add 1 bit indicator for 'droppable (or trivial) alpha)'.
Add 3 bit lossless version (for future extension like yuv support).
Change the sub-resolution information to 3 bits implying range [2 .. 9]

Change-Id: Ic7b8c069240bbcd326cf5d5d4cd2dde8667851e2
This commit is contained in:
Vikas Arora
2012-06-04 12:46:01 +05:30
parent 5f7bb3f53a
commit 069f903a08
6 changed files with 64 additions and 26 deletions
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4
src/mux/muxedit.c
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@ -123,7 +123,7 @@ static WebPImageInfo* CreateImageInfo(uint32_t x_offset, uint32_t y_offset,
WebPImageInfo* image_info = NULL;
const int ok = is_lossless ?
VP8LGetInfo(data, size, &width, &height) :
VP8LGetInfo(data, size, &width, &height, NULL) :
VP8GetInfo(data, size, size, &width, &height);
if (!ok) return NULL;
@ -500,7 +500,7 @@ static WebPMuxError GetImageWidthHeight(const WebPChunk* const image_chunk,
ok = (tag == kChunks[IDX_VP8].tag) ?
VP8GetInfo(image_chunk->data_, image_chunk->payload_size_,
image_chunk->payload_size_, &w, &h) :
VP8LGetInfo(image_chunk->data_, image_chunk->payload_size_, &w, &h);
VP8LGetInfo(image_chunk->data_, image_chunk->payload_size_, &w, &h, NULL);
if (ok) {
*width = w;
*height = h;