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#![allow(non_upper_case_globals)] use std::ffi::{CString, c_void}; use std::os::raw::{c_char, c_int}; use libc::{size_t, c_float}; /////////////////////////////////////////////////////////////////////////////// // WEBP STRUCTS /////////////////////////////////////////////////////////////////////////////// /// Structure for storing auxiliary statistics. pub type WebPAuxStats = crate::raw::webp::WebPAuxStats; /// Features gathered from the bitstream. pub type WebPBitstreamFeatures = crate::raw::webp::WebPBitstreamFeatures; /// Compression parameters. pub type WebPConfig = crate::raw::webp::WebPConfig; /// WebPDecBuffer: Generic structure for describing the output sample buffer. pub type WebPDecBuffer = crate::raw::webp::WebPDecBuffer; /// Main object storing the configuration for advanced decoding. pub type WebPDecoderConfig = crate::raw::webp::WebPDecoderConfig; /// Decoding options pub type WebPDecoderOptions = crate::raw::webp::WebPDecoderOptions; pub type WebPIDecoder = crate::raw::webp::WebPIDecoder; /// WebPMemoryWrite: a special WebPWriterFunction that writes to memory using /// the following WebPMemoryWriter object (to be set as a custom_ptr). pub type WebPMemoryWriter = crate::raw::webp::WebPMemoryWriter; /// Main exchange structure (input samples, output bytes, statistics) pub type WebPPicture = crate::raw::webp::WebPPicture; /// WebPDecBuffer: Generic structure for describing the output sample buffer. pub type WebPRGBABuffer = crate::raw::webp::WebPRGBABuffer; /// WebPDecBuffer: Generic structure for describing the output sample buffer. pub type WebPYUVABuffer = crate::raw::webp::WebPYUVABuffer; /////////////////////////////////////////////////////////////////////////////// // TYPE-DEFS /////////////////////////////////////////////////////////////////////////////// /// Enumeration of the status codes. pub type VP8StatusCode = crate::raw::webp::VP8StatusCode; /// Colorspaces. /// /// Note: the naming describes the byte-ordering of packed samples in memory. /// For instance, MODE_BGRA relates to samples ordered as B,G,R,A,B,G,R,A,... /// Non-capital names (e.g.:MODE_Argb) relates to pre-multiplied RGB channels. /// RGBA-4444 and RGB-565 colorspaces are represented by following byte-order: /// RGBA-4444: [r3 r2 r1 r0 g3 g2 g1 g0], [b3 b2 b1 b0 a3 a2 a1 a0], ... /// RGB-565: [r4 r3 r2 r1 r0 g5 g4 g3], [g2 g1 g0 b4 b3 b2 b1 b0], ... /// In the case WEBP_SWAP_16BITS_CSP is defined, the bytes are swapped for /// these two modes: /// RGBA-4444: [b3 b2 b1 b0 a3 a2 a1 a0], [r3 r2 r1 r0 g3 g2 g1 g0], ... /// RGB-565: [g2 g1 g0 b4 b3 b2 b1 b0], [r4 r3 r2 r1 r0 g5 g4 g3], ... pub type WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE; /// Color spaces. pub type WebPEncCSP = crate::raw::webp::WebPEncCSP; /// Encoding error conditions. pub type WebPEncodingError = crate::raw::webp::WebPEncodingError; /// Image characteristics hint for the underlying encoder. pub type WebPImageHint = crate::raw::webp::WebPImageHint; /// Enumerate some predefined settings for WebPConfig, depending on the type /// of source picture. /// /// These presets are used when calling WebPConfigPreset(). pub type WebPPreset = crate::raw::webp::WebPPreset; /// Progress hook, called from time to time to report progress. /// /// It can return /// false to request an abort of the encoding process, or true otherwise if /// everything is OK. pub type WebPProgressHook = crate::raw::webp::WebPProgressHook; /// Signature for output function. /// /// Should return true if writing was successful. /// data/data_size is the segment of data to write, and 'picture' is for /// reference (and so one can make use of picture->custom_ptr). pub type WebPWriterFunction = crate::raw::webp::WebPWriterFunction; /////////////////////////////////////////////////////////////////////////////// // WEBP CONSTANTS /////////////////////////////////////////////////////////////////////////////// pub const MODE_ARGB: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_ARGB; pub const MODE_Argb: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_Argb; pub const MODE_BGR: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_BGR; pub const MODE_BGRA: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_BGRA; pub const MODE_LAST: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_LAST; pub const MODE_RGB: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_RGB; pub const MODE_RGBA: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_RGBA; pub const MODE_RGBA_4444: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_RGBA_4444; pub const MODE_RGB_565: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_RGB_565; pub const MODE_YUV: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_YUV; pub const MODE_YUVA: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_YUVA; pub const MODE_bgrA: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_bgrA; pub const MODE_rgbA: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_rgbA; pub const MODE_rgbA_4444: WebPCSPMode = crate::raw::webp::WEBP_CSP_MODE_MODE_rgbA_4444; pub const WEBP_DECODER_ABI_VERSION: u32 = crate::raw::webp::WEBP_DECODER_ABI_VERSION; pub const WEBP_ENCODER_ABI_VERSION: u32 = crate::raw::webp::WEBP_ENCODER_ABI_VERSION; pub const WEBP_MAX_DIMENSION: u32 = crate::raw::webp::WEBP_MAX_DIMENSION; pub const WEBP_CSP_ALPHA_BIT: WebPEncCSP = crate::raw::webp::WebPEncCSP_WEBP_CSP_ALPHA_BIT; pub const WEBP_CSP_UV_MASK: WebPEncCSP = crate::raw::webp::WebPEncCSP_WEBP_CSP_UV_MASK; pub const WEBP_YUV420: WebPEncCSP = crate::raw::webp::WebPEncCSP_WEBP_YUV420; pub const WEBP_YUV420A: WebPEncCSP = crate::raw::webp::WebPEncCSP_WEBP_YUV420A; pub const VP8_ENC_OK: WebPEncodingError = crate::raw::webp::WebPEncodingError_VP8_ENC_OK; pub const VP8_ENC_ERROR_OUT_OF_MEMORY: WebPEncodingError = crate::raw::webp::WebPEncodingError_VP8_ENC_ERROR_OUT_OF_MEMORY; pub const VP8_ENC_ERROR_BITSTREAM_OUT_OF_MEMORY: WebPEncodingError = crate::raw::webp::WebPEncodingError_VP8_ENC_ERROR_BITSTREAM_OUT_OF_MEMORY; pub const VP8_ENC_ERROR_NULL_PARAMETER: WebPEncodingError = crate::raw::webp::WebPEncodingError_VP8_ENC_ERROR_NULL_PARAMETER; pub const VP8_ENC_ERROR_INVALID_CONFIGURATION: WebPEncodingError = crate::raw::webp::WebPEncodingError_VP8_ENC_ERROR_INVALID_CONFIGURATION; pub const VP8_ENC_ERROR_BAD_DIMENSION: WebPEncodingError = crate::raw::webp::WebPEncodingError_VP8_ENC_ERROR_BAD_DIMENSION; pub const VP8_ENC_ERROR_PARTITION_OVERFLOW: WebPEncodingError = crate::raw::webp::WebPEncodingError_VP8_ENC_ERROR_PARTITION_OVERFLOW; pub const VP8_ENC_ERROR_BAD_WRITE: WebPEncodingError = crate::raw::webp::WebPEncodingError_VP8_ENC_ERROR_BAD_WRITE; pub const VP8_ENC_ERROR_FILE_TOO_BIG: WebPEncodingError = crate::raw::webp::WebPEncodingError_VP8_ENC_ERROR_FILE_TOO_BIG; pub const VP8_ENC_ERROR_USER_ABORT: WebPEncodingError = crate::raw::webp::WebPEncodingError_VP8_ENC_ERROR_USER_ABORT; pub const VP8_ENC_ERROR_LAST: WebPEncodingError = crate::raw::webp::WebPEncodingError_VP8_ENC_ERROR_LAST; pub const VP8_ENC_ERROR_PARTITION0_OVERFLOW: WebPEncodingError = crate::raw::webp::WebPEncodingError_VP8_ENC_ERROR_PARTITION0_OVERFLOW; pub const WEBP_HINT_DEFAULT: WebPImageHint = crate::raw::webp::WebPImageHint_WEBP_HINT_DEFAULT; pub const WEBP_HINT_GRAPH: WebPImageHint = crate::raw::webp::WebPImageHint_WEBP_HINT_GRAPH; pub const WEBP_HINT_LAST: WebPImageHint = crate::raw::webp::WebPImageHint_WEBP_HINT_LAST; pub const WEBP_HINT_PHOTO: WebPImageHint = crate::raw::webp::WebPImageHint_WEBP_HINT_PHOTO; pub const WEBP_HINT_PICTURE: WebPImageHint = crate::raw::webp::WebPImageHint_WEBP_HINT_PICTURE; pub const WEBP_PRESET_DEFAULT: WebPPreset = crate::raw::webp::WebPPreset_WEBP_PRESET_DEFAULT; pub const WEBP_PRESET_DRAWING: WebPPreset = crate::raw::webp::WebPPreset_WEBP_PRESET_DRAWING; pub const WEBP_PRESET_ICON: WebPPreset = crate::raw::webp::WebPPreset_WEBP_PRESET_ICON; pub const WEBP_PRESET_PHOTO: WebPPreset = crate::raw::webp::WebPPreset_WEBP_PRESET_PHOTO; pub const WEBP_PRESET_PICTURE: WebPPreset = crate::raw::webp::WebPPreset_WEBP_PRESET_PICTURE; pub const WEBP_PRESET_TEXT: WebPPreset = crate::raw::webp::WebPPreset_WEBP_PRESET_TEXT; /////////////////////////////////////////////////////////////////////////////// // WEBP FUNCTIONS /////////////////////////////////////////////////////////////////////////////// // Remove the transparency information (if present) by blending the color with // the background color 'background_rgb' (specified as 24bit RGB triplet). // After this call, all alpha values are reset to 0xff. pub unsafe fn webp_blend_alpha(pic: *mut WebPPicture, background_rgb: u32) { crate::raw::webp::WebPBlendAlpha(pic, background_rgb) } /// Helper function: given a width x height plane of RGBA or YUV(A) samples /// clean-up or smoothen the YUV or RGB samples under fully transparent area, /// to help compressibility (no guarantee, though). pub unsafe fn webp_cleanup_transparent_area(picture: *mut WebPPicture) { crate::raw::webp::WebPCleanupTransparentArea(picture) } /// Internal, version-checked, entry point pub unsafe fn webp_config_init_internal( arg1: *mut WebPConfig, arg2: WebPPreset, arg3: f32, arg4: ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPConfigInitInternal(arg1, arg2, arg3, arg4) } /// Activate the lossless compression mode with the desired efficiency level /// between 0 (fastest, lowest compression) and 9 (slower, best compression). /// /// A good default level is '6', providing a fair tradeoff between compression /// speed and final compressed size. /// This function will overwrite several fields from config: 'method', 'quality' /// and 'lossless'. Returns false in case of parameter error. pub unsafe fn webp_config_lossless_preset( config: *mut WebPConfig, level: ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPConfigLosslessPreset(config, level) } /// Non-incremental version. This version decodes the full data at once, taking /// 'config' into account. /// /// Returns decoding status (which should be VP8_STATUS_OK /// if the decoding was successful). Note that 'config' cannot be NULL. pub unsafe fn webp_decode( data: *const u8, data_size: usize, config: *mut WebPDecoderConfig, ) -> VP8StatusCode { crate::raw::webp::WebPDecode(data, data_size, config) } /// Same as WebPDecodeRGBA, but returning A, R, G, B, A, R, G, B... ordered data. pub unsafe fn webp_decode_argb( data: *const u8, data_size: usize, width: *mut ::std::os::raw::c_int, height: *mut ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPDecodeARGB(data, data_size, width, height) } pub unsafe fn webp_decode_argb_into( data: *const u8, data_size: usize, output_buffer: *mut u8, output_buffer_size: usize, output_stride: ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPDecodeARGBInto( data, data_size, output_buffer, output_buffer_size, output_stride, ) } /// Same as WebPDecodeRGB, but returning B, G, R, B, G, R... ordered data. pub unsafe fn webp_decode_bgr( data: *const u8, data_size: usize, width: *mut ::std::os::raw::c_int, height: *mut ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPDecodeBGR( data, data_size, width, height, ) } /// Same as WebPDecodeRGBA, but returning B, G, R, A, B, G, R, A... ordered data. pub unsafe fn webp_decode_bgra( data: *const u8, data_size: usize, width: *mut ::std::os::raw::c_int, height: *mut ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPDecodeBGRA( data, data_size, width, height, ) } pub unsafe fn webp_decodebgra_into( data: *const u8, data_size: usize, output_buffer: *mut u8, output_buffer_size: usize, output_stride: ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPDecodeBGRAInto( data, data_size, output_buffer, output_buffer_size, output_stride, ) } pub unsafe fn webp_decode_bgr_into( data: *const u8, data_size: usize, output_buffer: *mut u8, output_buffer_size: usize, output_stride: ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPDecodeBGRInto( data, data_size, output_buffer, output_buffer_size, output_stride, ) } /// Same as WebPDecodeRGBA, but returning R, G, B, R, G, B... ordered data. /// If the bitstream contains transparency, it is ignored. pub unsafe fn webp_decode_rgb( data: *const u8, data_size: usize, width: *mut ::std::os::raw::c_int, height: *mut ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPDecodeRGB( data, data_size, width, height, ) } /// Decodes WebP images pointed to by 'data' and returns RGBA samples, along /// with the dimensions in *width and *height. /// /// The ordering of samples in /// memory is R, G, B, A, R, G, B, A... in scan order (endian-independent). /// The returned pointer should be deleted calling WebPFree(). /// Returns NULL in case of error. pub unsafe fn webp_decode_rgba( data: *const u8, data_size: usize, width: *mut ::std::os::raw::c_int, height: *mut ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPDecodeRGBA( data, data_size, width, height, ) } /// These five functions are variants of the above ones, that decode the image /// directly into a pre-allocated buffer 'output_buffer'. /// /// The maximum storage /// available in this buffer is indicated by 'output_buffer_size'. If this /// storage is not sufficient (or an error occurred), NULL is returned. /// Otherwise, output_buffer is returned, for convenience. /// The parameter 'output_stride' specifies the distance (in bytes) /// between scanlines. Hence, output_buffer_size is expected to be at least /// output_stride x picture-height. pub unsafe fn webp_decode_rgba_into( data: *const u8, data_size: usize, output_buffer: *mut u8, output_buffer_size: usize, output_stride: ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPDecodeRGBAInto( data, data_size, output_buffer, output_buffer_size, output_stride, ) } /// RGB and BGR variants. Here too the transparency information, if present, /// will be dropped and ignored. pub unsafe fn webp_decode_rgb_into( data: *const u8, data_size: usize, output_buffer: *mut u8, output_buffer_size: usize, output_stride: ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPDecodeRGBInto( data, data_size, output_buffer, output_buffer_size, output_stride, ) } /// Decode WebP images pointed to by 'data' to Y'UV format(*). /// /// The pointer /// returned is the Y samples buffer. Upon return, *u and *v will point to /// the U and V chroma data. These U and V buffers need NOT be passed to /// WebPFree(), unlike the returned Y luma one. The dimension of the U and V /// planes are both (*width + 1) / 2 and (*height + 1)/ 2. /// Upon return, the Y buffer has a stride returned as '*stride', while U and V /// have a common stride returned as '*uv_stride'. /// Return NULL in case of error. /// (*) Also named Y'CbCr. See: http://en.wikipedia.org/wiki/YCbCr pub unsafe fn webp_decode_yuv( data: *const u8, data_size: usize, width: *mut ::std::os::raw::c_int, height: *mut ::std::os::raw::c_int, u: *mut *mut u8, v: *mut *mut u8, stride: *mut ::std::os::raw::c_int, uv_stride: *mut ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPDecodeYUV( data, data_size, width, height, u, v, stride, uv_stride, ) } /// WebPDecodeYUVInto() is a variant of WebPDecodeYUV() that operates directly /// into pre-allocated luma/chroma plane buffers. /// /// This function requires the /// strides to be passed: one for the luma plane and one for each of the /// chroma ones. The size of each plane buffer is passed as 'luma_size', /// 'u_size' and 'v_size' respectively. /// Pointer to the luma plane ('*luma') is returned or NULL if an error occurred /// during decoding (or because some buffers were found to be too small). pub unsafe fn webp_decode_yuv_into( data: *const u8, data_size: usize, luma: *mut u8, luma_size: usize, luma_stride: ::std::os::raw::c_int, u: *mut u8, u_size: usize, u_stride: ::std::os::raw::c_int, v: *mut u8, v_size: usize, v_stride: ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPDecodeYUVInto( data, data_size, luma, luma_size, luma_stride, u, u_size, u_stride, v, v_size, v_stride, ) } /// Main call /// /// Main encoding call, after config and picture have been initialized. /// 'picture' must be less than 16384x16384 in dimension (cf WEBP_MAX_DIMENSION), /// and the 'config' object must be a valid one. /// Returns false in case of error, true otherwise. /// In case of error, picture->error_code is updated accordingly. /// 'picture' can hold the source samples in both YUV(A) or ARGB input, depending /// on the value of 'picture->use_argb'. It is highly recommended to use /// the former for lossy encoding, and the latter for lossless encoding /// (when config.lossless is true). Automatic conversion from one format to /// another is provided but they both incur some loss. pub unsafe fn webp_encode( config: *const WebPConfig, picture: *mut WebPPicture, ) -> c_int { crate::raw::webp::WebPEncode(config, picture) } /// One-stop-shop call! No questions asked: pub unsafe fn webp_encode_bgr( bgr: *const u8, width: ::std::os::raw::c_int, height: ::std::os::raw::c_int, stride: ::std::os::raw::c_int, quality_factor: f32, output: *mut *mut u8, ) -> usize { crate::raw::webp::WebPEncodeBGR( bgr, width, height, stride, quality_factor, output, ) } /// One-stop-shop call! No questions asked: pub unsafe fn webp_encode_bgra( bgra: *const u8, width: ::std::os::raw::c_int, height: ::std::os::raw::c_int, stride: ::std::os::raw::c_int, quality_factor: f32, output: *mut *mut u8, ) -> usize { crate::raw::webp::WebPEncodeBGRA( bgra, width, height, stride, quality_factor, output, ) } /// One-stop-shop call! No questions asked: pub unsafe fn webp_encode_lossless_bgr( bgr: *const u8, width: ::std::os::raw::c_int, height: ::std::os::raw::c_int, stride: ::std::os::raw::c_int, output: *mut *mut u8, ) -> usize { crate::raw::webp::WebPEncodeLosslessBGR( bgr, width, height, stride, output, ) } /// One-stop-shop call! No questions asked: pub unsafe fn webp_encode_lossless_bgra( rgba: *const u8, width: ::std::os::raw::c_int, height: ::std::os::raw::c_int, stride: ::std::os::raw::c_int, output: *mut *mut u8, ) -> usize { crate::raw::webp::WebPEncodeLosslessBGRA( rgba, width, height, stride, output, ) } /// One-stop-shop call! No questions asked: pub unsafe fn webp_encode_lossless_rgb( rgb: *const u8, width: ::std::os::raw::c_int, height: ::std::os::raw::c_int, stride: ::std::os::raw::c_int, output: *mut *mut u8, ) -> usize { crate::raw::webp::WebPEncodeLosslessRGB( rgb, width, height, stride, output, ) } /// One-stop-shop call! No questions asked: pub unsafe fn webp_encode_lossless_rgba( rgba: *const u8, width: ::std::os::raw::c_int, height: ::std::os::raw::c_int, stride: ::std::os::raw::c_int, output: *mut *mut u8, ) -> usize { crate::raw::webp::WebPEncodeLosslessRGBA( rgba, width, height, stride, output, ) } /// One-stop-shop call! No questions asked: pub unsafe fn webp_encode_rgb( rgb: *const u8, width: ::std::os::raw::c_int, height: ::std::os::raw::c_int, stride: ::std::os::raw::c_int, quality_factor: f32, output: *mut *mut u8, ) -> usize { crate::raw::webp::WebPEncodeRGB( rgb, width, height, stride, quality_factor, output, ) } /// One-stop-shop call! No questions asked: pub unsafe fn webp_encode_rgba( rgba: *const u8, width: ::std::os::raw::c_int, height: ::std::os::raw::c_int, stride: ::std::os::raw::c_int, quality_factor: f32, output: *mut *mut u8, ) -> usize { crate::raw::webp::WebPEncodeRGBA( rgba, width, height, stride, quality_factor, output, ) } /// Releases memory returned by the WebPDecode*() functions (from decode.h). pub unsafe fn webp_free(ptr: *mut ::std::os::raw::c_void) { crate::raw::webp::WebPFree(ptr) } /// Free any memory associated with the buffer. Must always be called last. /// /// Note: doesn't free the 'buffer' structure itself. pub unsafe fn webp_free_dec_buffer(buffer: *mut WebPDecBuffer) { crate::raw::webp::WebPFreeDecBuffer(buffer) } /// Return the decoder's version number, packed in hexadecimal using 8bits for /// each of major/minor/revision. /// /// E.g: v2.5.7 is 0x020507. pub unsafe fn webp_get_decoder_version() -> c_int { crate::raw::webp::WebPGetDecoderVersion() } /// Return the encoder's version number, packed in hexadecimal using 8bits for /// each of major/minor/revision. /// /// E.g: v2.5.7 is 0x020507. pub unsafe fn webp_get_encoder_version() -> c_int { crate::raw::webp::WebPGetEncoderVersion() } /// Internal, version-checked, entry point. pub unsafe fn webp_get_features_internal( arg1: *const u8, arg2: usize, arg3: *mut WebPBitstreamFeatures, arg4: ::std::os::raw::c_int, ) -> VP8StatusCode { crate::raw::webp::WebPGetFeaturesInternal( arg1, arg2, arg3, arg4, ) } /// Retrieve basic header information: width, height. /// /// This function will also validate the header, returning true on success, /// false otherwise. '*width' and '*height' are only valid on successful return. /// Pointers 'width' and 'height' can be passed NULL if deemed irrelevant. /// Note: The following chunk sequences (before the raw VP8/VP8L data) are /// considered valid by this function: /// RIFF + VP8(L) /// RIFF + VP8X + (optional chunks) + VP8(L) /// ALPH + VP8 <-- Not a valid WebP format: only allowed for internal purpose. /// VP8(L) <-- Not a valid WebP format: only allowed for internal purpose. pub unsafe fn webp_get_info( data: *const u8, data_size: usize, width: *mut ::std::os::raw::c_int, height: *mut ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPGetInfo( data, data_size, width, height, ) } /// Copies and decodes the next available data. /// /// Returns VP8_STATUS_OK when /// the image is successfully decoded. Returns VP8_STATUS_SUSPENDED when more /// data is expected. Returns error in other cases. pub unsafe fn webp_iappend( idec: *mut WebPIDecoder, data: *const u8, data_size: usize ) -> VP8StatusCode { crate::raw::webp::WebPIAppend( idec, data, data_size, ) } /// Returns the RGB/A image decoded so far. /// /// Returns NULL if output params /// are not initialized yet. The RGB/A output type corresponds to the colorspace /// specified during call to WebPINewDecoder() or WebPINewRGB(). /// *last_y is the index of last decoded row in raster scan order. Some pointers /// (*last_y, *width etc.) can be NULL if corresponding information is not /// needed. The values in these pointers are only valid on successful (non-NULL) /// return. pub unsafe fn webp_idec_get_rgb( idec: *const WebPIDecoder, last_y: *mut ::std::os::raw::c_int, width: *mut ::std::os::raw::c_int, height: *mut ::std::os::raw::c_int, stride: *mut ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPIDecGetRGB( idec, last_y, width, height, stride, ) } /// Same as above function to get a YUVA image. /// /// Returns pointer to the luma /// plane or NULL in case of error. If there is no alpha information /// the alpha pointer '*a' will be returned NULL. pub unsafe fn webp_idec_get_yuva( idec: *const WebPIDecoder, last_y: *mut ::std::os::raw::c_int, u: *mut *mut u8, v: *mut *mut u8, a: *mut *mut u8, width: *mut ::std::os::raw::c_int, height: *mut ::std::os::raw::c_int, stride: *mut ::std::os::raw::c_int, uv_stride: *mut ::std::os::raw::c_int, a_stride: *mut ::std::os::raw::c_int, ) -> *mut u8 { crate::raw::webp::WebPIDecGetYUVA( idec, last_y, u, v, a, width, height, stride, uv_stride, a_stride, ) } /// Instantiate a new incremental decoder object with the requested /// configuration. /// /// The bitstream can be passed using 'data' and 'data_size' /// parameter, in which case the features will be parsed and stored into /// config->input. Otherwise, 'data' can be NULL and no parsing will occur. /// Note that 'config' can be NULL too, in which case a default configuration /// is used. If 'config' is not NULL, it must outlive the WebPIDecoder object /// as some references to its fields will be used. No internal copy of 'config' /// is made. /// The return WebPIDecoder object must always be deleted calling WebPIDelete(). /// Returns NULL in case of error (and config->status will then reflect /// the error condition, if available). pub unsafe fn webp_idecode( data: *const u8, data_size: usize, config: *mut WebPDecoderConfig, ) -> *mut WebPIDecoder { crate::raw::webp::WebPIDecode( data, data_size, config, ) } /// Generic call to retrieve information about the displayable area. /// /// If non NULL, the left/right/width/height pointers are filled with the visible /// rectangular area so far. /// Returns NULL in case the incremental decoder object is in an invalid state. /// Otherwise returns the pointer to the internal representation. This structure /// is read-only, tied to WebPIDecoder's lifespan and should not be modified. pub unsafe fn webp_idecoded_area( idec: *const WebPIDecoder, left: *mut ::std::os::raw::c_int, top: *mut ::std::os::raw::c_int, width: *mut ::std::os::raw::c_int, height: *mut ::std::os::raw::c_int, ) -> *const WebPDecBuffer { crate::raw::webp::WebPIDecodedArea( idec, left, top, width, height, ) } /// Deletes the WebPIDecoder object and associated memory. /// /// Must always be called if WebPINewDecoder, WebPINewRGB or WebPINewYUV /// succeeded. pub unsafe fn webp_idelete(idec: *mut WebPIDecoder) { crate::raw::webp::WebPIDelete(idec) } /// Creates a new incremental decoder with the supplied buffer parameter. /// /// This output_buffer can be passed NULL, in which case a default output buffer /// is used (with MODE_RGB). Otherwise, an internal reference to 'output_buffer' /// is kept, which means that the lifespan of 'output_buffer' must be larger than /// that of the returned WebPIDecoder object. /// The supplied 'output_buffer' content MUST NOT be changed between calls to /// WebPIAppend() or WebPIUpdate() unless 'output_buffer.is_external_memory' is /// not set to 0. In such a case, it is allowed to modify the pointers, size and /// stride of output_buffer.u.RGBA or output_buffer.u.YUVA, provided they remain /// within valid bounds. /// All other fields of WebPDecBuffer MUST remain constant between calls. /// Returns NULL if the allocation failed. pub unsafe fn webp_inew_decoder(output_buffer: *mut WebPDecBuffer) -> *mut WebPIDecoder { crate::raw::webp::WebPINewDecoder(output_buffer) } /// This function allocates and initializes an incremental-decoder object, which /// will output the RGB/A samples specified by 'csp' into a preallocated /// buffer 'output_buffer'. /// /// The size of this buffer is at least /// 'output_buffer_size' and the stride (distance in bytes between two scanlines) /// is specified by 'output_stride'. /// Additionally, output_buffer can be passed NULL in which case the output /// buffer will be allocated automatically when the decoding starts. The /// colorspace 'csp' is taken into account for allocating this buffer. All other /// parameters are ignored. /// Returns NULL if the allocation failed, or if some parameters are invalid. pub unsafe fn webp_inew_rgb( csp: WebPCSPMode, output_buffer: *mut u8, output_buffer_size: usize, output_stride: ::std::os::raw::c_int, ) -> *mut WebPIDecoder { crate::raw::webp::WebPINewRGB( csp, output_buffer, output_buffer_size, output_stride, ) } /// Deprecated version of the above, without the alpha plane. /// /// Kept for backward compatibility. pub unsafe fn webp_inew_yuv( luma: *mut u8, luma_size: usize, luma_stride: ::std::os::raw::c_int, u: *mut u8, u_size: usize, u_stride: ::std::os::raw::c_int, v: *mut u8, v_size: usize, v_stride: ::std::os::raw::c_int, ) -> *mut WebPIDecoder { crate::raw::webp::WebPINewYUV( luma, luma_size, luma_stride, u, u_size, u_stride, v, v_size, v_stride, ) } /// This function allocates and initializes an incremental-decoder object, which /// will output the raw luma/chroma samples into a preallocated planes if /// supplied. /// /// The luma plane is specified by its pointer 'luma', its size /// 'luma_size' and its stride 'luma_stride'. Similarly, the chroma-u plane /// is specified by the 'u', 'u_size' and 'u_stride' parameters, and the chroma-v /// plane by 'v' and 'v_size'. And same for the alpha-plane. The 'a' pointer /// can be pass NULL in case one is not interested in the transparency plane. /// Conversely, 'luma' can be passed NULL if no preallocated planes are supplied. /// In this case, the output buffer will be automatically allocated (using /// MODE_YUVA) when decoding starts. All parameters are then ignored. /// Returns NULL if the allocation failed or if a parameter is invalid. pub unsafe fn webp_inew_yuva( luma: *mut u8, luma_size: usize, luma_stride: ::std::os::raw::c_int, u: *mut u8, u_size: usize, u_stride: ::std::os::raw::c_int, v: *mut u8, v_size: usize, v_stride: ::std::os::raw::c_int, a: *mut u8, a_size: usize, a_stride: ::std::os::raw::c_int, ) -> *mut WebPIDecoder { crate::raw::webp::WebPINewYUVA( luma, luma_size, luma_stride, u, u_size, u_stride, v, v_size, v_stride, a, a_size, a_stride, ) } /// A variant of the above function to be used when data buffer contains /// partial data from the beginning. /// /// In this case data buffer is not copied /// to the internal memory. /// Note that the value of the 'data' pointer can change between calls to /// WebPIUpdate, for instance when the data buffer is resized to fit larger data. pub unsafe fn webp_iupdate( idec: *mut WebPIDecoder, data: *const u8, data_size: usize, ) -> VP8StatusCode { crate::raw::webp::WebPIUpdate(idec, data, data_size) } /// Internal, version-checked, entry point pub unsafe fn webp_init_dec_buffer_internal( arg1: *mut WebPDecBuffer, arg2: ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPInitDecBufferInternal(arg1, arg2) } /// Internal, version-checked, entry point pub unsafe fn webp_init_decoder_config_internal( arg1: *mut WebPDecoderConfig, arg2: ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPInitDecoderConfigInternal(arg1, arg2) } /// WebPMemoryWrite: a special WebPWriterFunction that writes to memory using /// the following WebPMemoryWriter object (to be set as a custom_ptr). pub unsafe fn webp_memory_write( data: *const u8, data_size: usize, picture: *const WebPPicture, ) -> c_int { crate::raw::webp::WebPMemoryWrite(data, data_size, picture) } /// The following must be called to deallocate writer->mem memory. /// /// The 'writer' /// object itself is not deallocated. pub unsafe fn webp_memory_writer_clear(writer: *mut WebPMemoryWriter) { crate::raw::webp::WebPMemoryWriterClear(writer) } /// The following must be called first before any use. pub unsafe fn webp_memory_writer_init(writer: *mut WebPMemoryWriter) { crate::raw::webp::WebPMemoryWriterInit(writer) } /// Converts picture->argb data to the YUV420A format. /// /// The 'colorspace' /// parameter is deprecated and should be equal to WEBP_YUV420. /// Upon return, picture->use_argb is set to false. The presence of real /// non-opaque transparent values is detected, and 'colorspace' will be /// adjusted accordingly. Note that this method is lossy. /// Returns false in case of error. pub unsafe fn webp_picture_argb_to_yuva( picture: *mut WebPPicture, arg1: WebPEncCSP, ) -> c_int { crate::raw::webp::WebPPictureARGBToYUVA(picture, arg1) } /// Same as WebPPictureARGBToYUVA(), but the conversion is done using /// pseudo-random dithering with a strength 'dithering' between /// 0.0 (no dithering) and 1.0 (maximum dithering). /// /// This is useful for photographic picture. pub unsafe fn webp_picture_argb_to_yuva_dithered( picture: *mut WebPPicture, colorspace: WebPEncCSP, dithering: f32, ) -> c_int { crate::raw::webp::WebPPictureARGBToYUVADithered( picture, colorspace, dithering, ) } /// Convenience allocation / deallocation based on picture->width/height /// /// Allocate y/u/v buffers as per colorspace/width/height specification. /// Note! This function will free the previous buffer if needed. /// Returns false in case of memory error. pub unsafe fn webp_picture_alloc(picture: *mut WebPPicture) -> c_int { crate::raw::webp::WebPPictureAlloc(picture) } /// Copy the pixels of *src into *dst, using WebPPictureAlloc. /// /// Upon return, *dst /// will fully own the copied pixels (this is not a view). The 'dst' picture need /// not be initialized as its content is overwritten. /// Returns false in case of memory allocation error. pub unsafe fn webp_picture_copy(src: *const WebPPicture, dst: *mut WebPPicture) -> c_int { crate::raw::webp::WebPPictureCopy(src, dst) } /// self-crops a picture to the rectangle defined by top/left/width/height. /// /// Returns false in case of memory allocation error, or if the rectangle is /// outside of the source picture. /// The rectangle for the view is defined by the top-left corner pixel /// coordinates (left, top) as well as its width and height. This rectangle /// must be fully be comprised inside the 'src' source picture. If the source /// picture uses the YUV420 colorspace, the top and left coordinates will be /// snapped to even values. pub unsafe fn webp_picture_crop( picture: *mut WebPPicture, left: ::std::os::raw::c_int, top: ::std::os::raw::c_int, width: ::std::os::raw::c_int, height: ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPPictureCrop( picture, left, top, width, height, ) } /// Compute PSNR, SSIM or LSIM distortion metric between two pictures. /// /// Results /// are in dB, stored in result[] in the B/G/R/A/All order. The distortion is /// always performed using ARGB samples. Hence if the input is YUV(A), the /// picture will be internally converted to ARGB (just for the measurement). /// Warning: this function is rather CPU-intensive. pub unsafe fn webp_picture_distortion( src: *const WebPPicture, ref_: *const WebPPicture, metric_type: ::std::os::raw::c_int, result: *mut f32, ) -> c_int { crate::raw::webp::WebPPictureDistortion( src, ref_, metric_type, result, ) } /// Release the memory allocated by WebPPictureAlloc() or WebPPictureImport*(). /// /// Note that this function does _not_ free the memory used by the 'picture' /// object itself. /// Besides memory (which is reclaimed) all other fields of 'picture' are /// preserved. pub unsafe fn webp_picture_free(picture: *mut WebPPicture) { crate::raw::webp::WebPPictureFree(picture) } /// Scan the picture 'picture' for the presence of non fully opaque alpha values. /// /// Returns true in such case. Otherwise returns false (indicating that the /// alpha plane can be ignored altogether e.g.). pub unsafe fn webp_picture_has_transparency(picture: *const WebPPicture) -> c_int { crate::raw::webp::WebPPictureHasTransparency(picture) } pub unsafe fn webp_picture_import_bgr( picture: *mut WebPPicture, bgr: *const u8, bgr_stride: ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPPictureImportBGR( picture, bgr, bgr_stride, ) } pub unsafe fn webp_picture_import_bgra( picture: *mut WebPPicture, bgra: *const u8, bgra_stride: ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPPictureImportBGRA( picture, bgra, bgra_stride, ) } pub unsafe fn webp_picture_import_bgrx( picture: *mut WebPPicture, bgrx: *const u8, bgrx_stride: ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPPictureImportBGRX( picture, bgrx, bgrx_stride, ) } /// Colorspace conversion function to import RGB samples. /// /// Previous buffer will be free'd, if any. /// *rgb buffer should have a size of at least height * rgb_stride. /// Returns false in case of memory error. pub unsafe fn webp_picture_import_rgb( picture: *mut WebPPicture, rgb: *const u8, rgb_stride: ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPPictureImportRGB( picture, rgb, rgb_stride, ) } /// Same as `webp_picture_import_rgb`, but for RGBA buffer. pub unsafe fn webp_picture_import_rgba( picture: *mut WebPPicture, rgba: *const u8, rgba_stride: ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPPictureImportRGBA( picture, rgba, rgba_stride, ) } /// Imports the RGB direct from the 32-bit format /// input buffer ignoring the alpha channel. /// /// Avoids needing to copy the data /// to a temporary 24-bit RGB buffer to import the RGB only. pub unsafe fn webp_picture_import_rgbx( picture: *mut WebPPicture, rgbx: *const u8, rgbx_stride: ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPPictureImportRGBX( picture, rgbx, rgbx_stride, ) } /// Internal, version-checked, entry point pub unsafe fn webp_picture_init_internal( arg1: *mut WebPPicture, arg2: ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPPictureInitInternal(arg1, arg2) } /// Returns true if the 'picture' is actually a view and therefore does /// not own the memory for pixels. pub unsafe fn webp_picture_is_view(picture: *const WebPPicture) -> c_int { crate::raw::webp::WebPPictureIsView(picture) } /// Rescale a picture to new dimension width x height. /// /// If either 'width' or 'height' (but not both) is 0 the corresponding /// dimension will be calculated preserving the aspect ratio. /// No gamma correction is applied. /// Returns false in case of error (invalid parameter or insufficient memory). pub unsafe fn webp_picture_rescale( pic: *mut WebPPicture, width: ::std::os::raw::c_int, height: ::std::os::raw::c_int, ) -> c_int { crate::raw::webp::WebPPictureRescale(pic, width, height) } /// Performs 'sharp' RGBA->YUVA420 downsampling and colorspace conversion. /// /// Downsampling is handled with extra care in case of color clipping. This /// method is roughly 2x slower than WebPPictureARGBToYUVA() but produces better /// and sharper YUV representation. /// Returns false in case of error. pub unsafe fn webp_picture_sharp_argb_to_yuva(picture: *mut WebPPicture) -> c_int { crate::raw::webp::WebPPictureSharpARGBToYUVA(picture) } /// kept for backward compatibility pub unsafe fn webp_picture_smart_argb_to_yuva(picture: *mut WebPPicture) -> c_int { crate::raw::webp::WebPPictureSmartARGBToYUVA(picture) } /// Extracts a view from 'src' picture into 'dst'. /// /// The rectangle for the view /// is defined by the top-left corner pixel coordinates (left, top) as well /// as its width and height. This rectangle must be fully be comprised inside /// the 'src' source picture. If the source picture uses the YUV420 colorspace, /// the top and left coordinates will be snapped to even values. /// Picture 'src' must out-live 'dst' picture. Self-extraction of view is allowed /// ('src' equal to 'dst') as a mean of fast-cropping (but note that doing so, /// the original dimension will be lost). Picture 'dst' need not be initialized /// with WebPPictureInit() if it is different from 'src', since its content will /// be overwritten. /// Returns false in case of memory allocation error or invalid parameters. pub unsafe fn webp_picture_view( src: *const WebPPicture, left: ::std::os::raw::c_int, top: ::std::os::raw::c_int, width: ::std::os::raw::c_int, height: ::std::os::raw::c_int, dst: *mut WebPPicture, ) -> c_int { crate::raw::webp::WebPPictureView( src, left, top, width, height, dst, ) } /// Converts picture->yuv to picture->argb and sets picture->use_argb to true. /// /// The input format must be YUV_420 or YUV_420A. The conversion from YUV420 to /// ARGB incurs a small loss too. /// Note that the use of this colorspace is discouraged if one has access to the /// raw ARGB samples, since using YUV420 is comparatively lossy. /// Returns false in case of error. pub unsafe fn webp_picture_yuva_to_argb(picture: *mut WebPPicture) -> c_int { crate::raw::webp::WebPPictureYUVAToARGB(picture) } /// Compute the single distortion for packed planes of samples. /// /// 'src' will be compared to 'ref', and the raw distortion stored into /// '*distortion'. The refined metric (log(MSE), log(1 - ssim),...' will be /// stored in '*result'. /// 'x_step' is the horizontal stride (in bytes) between samples. /// 'src/ref_stride' is the byte distance between rows. /// Returns false in case of error (bad parameter, memory allocation error, ...). pub unsafe fn webp_plane_distortion( src: *const u8, src_stride: usize, ref_: *const u8, ref_stride: usize, width: ::std::os::raw::c_int, height: ::std::os::raw::c_int, x_step: usize, type_: ::std::os::raw::c_int, distortion: *mut f32, result: *mut f32, ) -> c_int { crate::raw::webp::WebPPlaneDistortion( src, src_stride, ref_, ref_stride, width, height, x_step, type_, distortion, result, ) } /// Returns true if 'config' is non-NULL and all configuration parameters are /// within their valid ranges. pub unsafe fn webp_validate_config(config: *const WebPConfig) -> c_int { crate::raw::webp::WebPValidateConfig(config) } #[link(name = "cbits")] extern "C" { /// Should always be called, to initialize a fresh WebPConfig structure before /// modification. /// /// Returns false in case of version mismatch. WebPConfigInit() /// must have succeeded before using the 'config' object. /// Note that the default values are lossless=0 and quality=75. pub fn webp_config_init(config: *mut WebPConfig) -> c_int; /// This function will initialize the configuration according to a predefined /// set of parameters (referred to by 'preset') and a given quality factor. /// /// This function can be called as a replacement to WebPConfigInit(). Will /// return false in case of error. pub fn webp_config_preset( config: *mut WebPConfig, preset: WebPPreset, quality: c_float, ) -> c_int; /// Should always be called, to initialize the structure. /// /// Returns false in case /// of version mismatch. WebPPictureInit() must have succeeded before using the /// 'picture' object. /// Note that, by default, use_argb is false and colorspace is WEBP_YUV420. pub fn webp_picture_init(picture: *mut WebPPicture) -> c_int; } mod test { use super::*; #[test] fn test_create_webp_config() { let mut config: WebPConfig = unsafe {std::mem::zeroed()}; unsafe { assert!(webp_config_init(&mut config) != 0); assert!(webp_validate_config(&mut config) != 0); }; } #[test] fn test_create_webp_picture() { let mut picture: WebPPicture = unsafe {std::mem::zeroed()}; unsafe { webp_picture_init(&mut picture); }; } }