mirror of
https://github.com/webmproject/libwebp.git
synced 2025-07-17 14:29:48 +02:00
replace 'typedef struct {} X;" by "typedef struct X X; struct X {};"
Change-Id: I937dc8781bc87ef0c4e109d49dc1cf6f18033f12
This commit is contained in:
@ -20,6 +20,16 @@ extern "C" {
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#define WEBP_DECODER_ABI_VERSION 0x0200 // MAJOR(8b) + MINOR(8b)
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typedef struct WebPRGBABuffer WebPRGBABuffer;
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typedef struct WebPYUVABuffer WebPYUVABuffer;
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typedef struct WebPDecBuffer WebPDecBuffer;
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typedef enum VP8StatusCode VP8StatusCode;
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typedef enum WEBP_CSP_MODE WEBP_CSP_MODE;
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typedef struct WebPIDecoder WebPIDecoder;
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typedef struct WebPBitstreamFeatures WebPBitstreamFeatures;
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typedef struct WebPDecoderOptions WebPDecoderOptions;
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typedef struct WebPDecoderConfig WebPDecoderConfig;
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// Return the decoder's version number, packed in hexadecimal using 8bits for
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// each of major/minor/revision. E.g: v2.5.7 is 0x020507.
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WEBP_EXTERN(int) WebPGetDecoderVersion(void);
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@ -119,19 +129,20 @@ WEBP_EXTERN(uint8_t*) WebPDecodeYUVInto(
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// For instance, MODE_BGRA relates to samples ordered as B,G,R,A,B,G,R,A,...
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// Non-capital names (e.g.:MODE_Argb) relates to pre-multiplied RGB channels.
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// RGB-565 and RGBA-4444 are also endian-agnostic and byte-oriented.
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typedef enum { MODE_RGB = 0, MODE_RGBA = 1,
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MODE_BGR = 2, MODE_BGRA = 3,
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MODE_ARGB = 4, MODE_RGBA_4444 = 5,
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MODE_RGB_565 = 6,
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// RGB-premultiplied transparent modes (alpha value is preserved)
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MODE_rgbA = 7,
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MODE_bgrA = 8,
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MODE_Argb = 9,
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MODE_rgbA_4444 = 10,
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// YUV modes must come after RGB ones.
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MODE_YUV = 11, MODE_YUVA = 12, // yuv 4:2:0
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MODE_LAST = 13
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} WEBP_CSP_MODE;
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enum WEBP_CSP_MODE {
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MODE_RGB = 0, MODE_RGBA = 1,
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MODE_BGR = 2, MODE_BGRA = 3,
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MODE_ARGB = 4, MODE_RGBA_4444 = 5,
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MODE_RGB_565 = 6,
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// RGB-premultiplied transparent modes (alpha value is preserved)
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MODE_rgbA = 7,
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MODE_bgrA = 8,
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MODE_Argb = 9,
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MODE_rgbA_4444 = 10,
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// YUV modes must come after RGB ones.
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MODE_YUV = 11, MODE_YUVA = 12, // yuv 4:2:0
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MODE_LAST = 13
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};
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// Some useful macros:
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static WEBP_INLINE int WebPIsPremultipliedMode(WEBP_CSP_MODE mode) {
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@ -152,13 +163,13 @@ static WEBP_INLINE int WebPIsRGBMode(WEBP_CSP_MODE mode) {
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//------------------------------------------------------------------------------
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// WebPDecBuffer: Generic structure for describing the output sample buffer.
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typedef struct { // view as RGBA
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struct WebPRGBABuffer { // view as RGBA
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uint8_t* rgba; // pointer to RGBA samples
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int stride; // stride in bytes from one scanline to the next.
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size_t size; // total size of the *rgba buffer.
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} WebPRGBABuffer;
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};
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typedef struct { // view as YUVA
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struct WebPYUVABuffer { // view as YUVA
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uint8_t* y, *u, *v, *a; // pointer to luma, chroma U/V, alpha samples
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int y_stride; // luma stride
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int u_stride, v_stride; // chroma strides
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@ -166,10 +177,10 @@ typedef struct { // view as YUVA
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size_t y_size; // luma plane size
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size_t u_size, v_size; // chroma planes size
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size_t a_size; // alpha-plane size
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} WebPYUVABuffer;
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};
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// Output buffer
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typedef struct {
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struct WebPDecBuffer {
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WEBP_CSP_MODE colorspace; // Colorspace.
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int width, height; // Dimensions.
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int is_external_memory; // If true, 'internal_memory' pointer is not used.
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@ -182,7 +193,7 @@ typedef struct {
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uint8_t* private_memory; // Internally allocated memory (only when
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// is_external_memory is false). Should not be used
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// externally, but accessed via the buffer union.
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} WebPDecBuffer;
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};
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// Internal, version-checked, entry point
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WEBP_EXTERN(int) WebPInitDecBufferInternal(WebPDecBuffer*, int);
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@ -200,7 +211,7 @@ WEBP_EXTERN(void) WebPFreeDecBuffer(WebPDecBuffer* buffer);
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//------------------------------------------------------------------------------
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// Enumeration of the status codes
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typedef enum {
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enum VP8StatusCode {
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VP8_STATUS_OK = 0,
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VP8_STATUS_OUT_OF_MEMORY,
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VP8_STATUS_INVALID_PARAM,
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@ -209,7 +220,7 @@ typedef enum {
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VP8_STATUS_SUSPENDED,
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VP8_STATUS_USER_ABORT,
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VP8_STATUS_NOT_ENOUGH_DATA
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} VP8StatusCode;
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};
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//------------------------------------------------------------------------------
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// Incremental decoding
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@ -237,8 +248,6 @@ typedef enum {
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// }
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// WebPIDelete(idec);
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typedef struct WebPIDecoder WebPIDecoder;
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// Creates a new incremental decoder with the supplied buffer parameter.
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// This output_buffer can be passed NULL, in which case a default output buffer
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// is used (with MODE_RGB). Otherwise, an internal reference to 'output_buffer'
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@ -365,7 +374,7 @@ WEBP_EXTERN(const WebPDecBuffer*) WebPIDecodedArea(
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*/
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// Features gathered from the bitstream
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typedef struct {
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struct WebPBitstreamFeatures {
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int width; // Width in pixels, as read from the bitstream.
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int height; // Height in pixels, as read from the bitstream.
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int has_alpha; // True if the bitstream contains an alpha channel.
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@ -377,7 +386,7 @@ typedef struct {
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int rotate; // TODO(later)
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int uv_sampling; // should be 0 for now. TODO(later)
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uint32_t pad[3]; // padding for later use
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} WebPBitstreamFeatures;
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};
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// Internal, version-checked, entry point
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WEBP_EXTERN(VP8StatusCode) WebPGetFeaturesInternal(
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@ -395,7 +404,7 @@ static WEBP_INLINE VP8StatusCode WebPGetFeatures(
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}
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// Decoding options
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typedef struct {
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struct WebPDecoderOptions {
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int bypass_filtering; // if true, skip the in-loop filtering
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int no_fancy_upsampling; // if true, use faster pointwise upsampler
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int use_cropping; // if true, cropping is applied _first_
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@ -410,14 +419,14 @@ typedef struct {
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int force_rotation; // forced rotation (to be applied _last_)
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int no_enhancement; // if true, discard enhancement layer
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uint32_t pad[6]; // padding for later use
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} WebPDecoderOptions;
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};
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// Main object storing the configuration for advanced decoding.
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typedef struct {
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struct WebPDecoderConfig {
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WebPBitstreamFeatures input; // Immutable bitstream features (optional)
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WebPDecBuffer output; // Output buffer (can point to external mem)
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WebPDecoderOptions options; // Decoding options
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} WebPDecoderConfig;
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};
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// Internal, version-checked, entry point
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WEBP_EXTERN(int) WebPInitDecoderConfigInternal(WebPDecoderConfig*, int);
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