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Diffstat (limited to 'vendor/qoi/ext')
| -rw-r--r-- | vendor/qoi/ext/qoi/README.md | 92 | ||||
| -rw-r--r-- | vendor/qoi/ext/qoi/qoi.h | 671 | ||||
| -rw-r--r-- | vendor/qoi/ext/qoi/qoibench.c | 650 | ||||
| -rw-r--r-- | vendor/qoi/ext/qoi/qoiconv.c | 106 | ||||
| -rw-r--r-- | vendor/qoi/ext/qoi/qoifuzz.c | 51 |
5 files changed, 1570 insertions, 0 deletions
diff --git a/vendor/qoi/ext/qoi/README.md b/vendor/qoi/ext/qoi/README.md new file mode 100644 index 0000000..702c342 --- /dev/null +++ b/vendor/qoi/ext/qoi/README.md @@ -0,0 +1,92 @@ + + +# QOI - The “Quite OK Image Format” for fast, lossless image compression + +Single-file MIT licensed library for C/C++ + +See [qoi.h](https://github.com/phoboslab/qoi/blob/master/qoi.h) for +the documentation and format specification. + +More info at https://qoiformat.org + + +## Why? + +Compared to stb_image and stb_image_write QOI offers 20x-50x faster encoding, +3x-4x faster decoding and 20% better compression. It's also stupidly simple and +fits in about 300 lines of C. + + +## Example Usage + +- [qoiconv.c](https://github.com/phoboslab/qoi/blob/master/qoiconv.c) +converts between png <> qoi + - [qoibench.c](https://github.com/phoboslab/qoi/blob/master/qoibench.c) +a simple wrapper to benchmark stbi, libpng and qoi + + +## Limitations + +The QOI file format allows for huge images with up to 18 exa-pixels. A streaming +en-/decoder can handle these with minimal RAM requirements, assuming there is +enough storage space. + +This particular implementation of QOI however is limited to images with a +maximum size of 400 million pixels. It will safely refuse to en-/decode anything +larger than that. This is not a streaming en-/decoder. It loads the whole image +file into RAM before doing any work and is not extensively optimized for +performance (but it's still very fast). + +If this is a limitation for your use case, please look into any of the other +implementations listed below. + + +## Tools + +- https://github.com/floooh/qoiview - native QOI viewer +- https://github.com/pfusik/qoi-ci/releases/tag/qoi-ci-1.1.0 - QOI Plugin installer for GIMP, Imagine, Paint.NET and XnView MP +- https://github.com/iOrange/QoiFileTypeNet/releases/tag/v0.2 - QOI Plugin for Paint.NET +- https://github.com/iOrange/QOIThumbnailProvider - Add thumbnails for QOI images in Windows Explorer +- https://github.com/Tom94/tev - another native QOI viewer (allows pixel peeping and comparison with other image formats) + + +## Implementations & Bindings of QOI + +- https://github.com/pfusik/qoi-ci (Ć, transpiled to C, C++, C#, Java, JavaScript, Python and Swift) +- https://github.com/kodonnell/qoi (Python) +- https://github.com/Cr4xy/lua-qoi (Lua) +- https://github.com/superzazu/SDL_QOI (C, SDL2 bindings) +- https://github.com/saharNooby/qoi-java (Java) +- https://github.com/MasterQ32/zig-qoi (Zig) +- https://github.com/rbino/qoix (Elixir) +- https://github.com/NUlliiON/QoiSharp (C#) +- https://github.com/zakarumych/rapid-qoi (Rust) +- https://github.com/takeyourhatoff/qoi (Go) +- https://github.com/DosWorld/pasqoi (Pascal) +- https://github.com/elihwyma/Swift-QOI (Swift) +- https://github.com/xfmoulet/qoi (Go) +- https://erratique.ch/software/qoic (OCaml) + + +## QOI Support in Other Software + +- [SerenityOS](https://github.com/SerenityOS/serenity) supports decoding QOI system wide through a custom [cpp implementation in LibGfx](https://github.com/SerenityOS/serenity/blob/master/Userland/Libraries/LibGfx/QOILoader.h) +- [Raylib](https://github.com/raysan5/raylib) supports decoding and encoding QOI textures through its [rtextures module](https://github.com/raysan5/raylib/blob/master/src/rtextures.c) +- [Rebol3](https://github.com/Oldes/Rebol3/issues/39) supports decoding and encoding QOI using a native codec +- [c-ray](https://github.com/vkoskiv/c-ray) supports QOI natively + + +## Packages + +[AUR](https://aur.archlinux.org/pkgbase/qoi-git/) - system-wide qoi.h, qoiconv and qoibench install as split packages. + + +## Implementations not yet conforming to the final specification + +These implementations are based on the pre-release version of QOI. Resulting files are not compatible with the current version. + +- https://github.com/steven-joruk/qoi (Rust) +- https://github.com/ChevyRay/qoi_rs (Rust) +- https://github.com/panzi/jsqoi (TypeScript) +- https://github.com/0xd34df00d/hsqoi (Haskell) + diff --git a/vendor/qoi/ext/qoi/qoi.h b/vendor/qoi/ext/qoi/qoi.h new file mode 100644 index 0000000..7addd70 --- /dev/null +++ b/vendor/qoi/ext/qoi/qoi.h @@ -0,0 +1,671 @@ +/* + +QOI - The "Quite OK Image" format for fast, lossless image compression + +Dominic Szablewski - https://phoboslab.org + + +-- LICENSE: The MIT License(MIT) + +Copyright(c) 2021 Dominic Szablewski + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files(the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and / or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions : +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + + +-- About + +QOI encodes and decodes images in a lossless format. Compared to stb_image and +stb_image_write QOI offers 20x-50x faster encoding, 3x-4x faster decoding and +20% better compression. + + +-- Synopsis + +// Define `QOI_IMPLEMENTATION` in *one* C/C++ file before including this +// library to create the implementation. + +#define QOI_IMPLEMENTATION +#include "qoi.h" + +// Encode and store an RGBA buffer to the file system. The qoi_desc describes +// the input pixel data. +qoi_write("image_new.qoi", rgba_pixels, &(qoi_desc){ + .width = 1920, + .height = 1080, + .channels = 4, + .colorspace = QOI_SRGB +}); + +// Load and decode a QOI image from the file system into a 32bbp RGBA buffer. +// The qoi_desc struct will be filled with the width, height, number of channels +// and colorspace read from the file header. +qoi_desc desc; +void *rgba_pixels = qoi_read("image.qoi", &desc, 4); + + + +-- Documentation + +This library provides the following functions; +- qoi_read -- read and decode a QOI file +- qoi_decode -- decode the raw bytes of a QOI image from memory +- qoi_write -- encode and write a QOI file +- qoi_encode -- encode an rgba buffer into a QOI image in memory + +See the function declaration below for the signature and more information. + +If you don't want/need the qoi_read and qoi_write functions, you can define +QOI_NO_STDIO before including this library. + +This library uses malloc() and free(). To supply your own malloc implementation +you can define QOI_MALLOC and QOI_FREE before including this library. + +This library uses memset() to zero-initialize the index. To supply your own +implementation you can define QOI_ZEROARR before including this library. + + +-- Data Format + +A QOI file has a 14 byte header, followed by any number of data "chunks" and an +8-byte end marker. + +struct qoi_header_t { + char magic[4]; // magic bytes "qoif" + uint32_t width; // image width in pixels (BE) + uint32_t height; // image height in pixels (BE) + uint8_t channels; // 3 = RGB, 4 = RGBA + uint8_t colorspace; // 0 = sRGB with linear alpha, 1 = all channels linear +}; + +Images are encoded row by row, left to right, top to bottom. The decoder and +encoder start with {r: 0, g: 0, b: 0, a: 255} as the previous pixel value. An +image is complete when all pixels specified by width * height have been covered. + +Pixels are encoded as + - a run of the previous pixel + - an index into an array of previously seen pixels + - a difference to the previous pixel value in r,g,b + - full r,g,b or r,g,b,a values + +The color channels are assumed to not be premultiplied with the alpha channel +("un-premultiplied alpha"). + +A running array[64] (zero-initialized) of previously seen pixel values is +maintained by the encoder and decoder. Each pixel that is seen by the encoder +and decoder is put into this array at the position formed by a hash function of +the color value. In the encoder, if the pixel value at the index matches the +current pixel, this index position is written to the stream as QOI_OP_INDEX. +The hash function for the index is: + + index_position = (r * 3 + g * 5 + b * 7 + a * 11) % 64 + +Each chunk starts with a 2- or 8-bit tag, followed by a number of data bits. The +bit length of chunks is divisible by 8 - i.e. all chunks are byte aligned. All +values encoded in these data bits have the most significant bit on the left. + +The 8-bit tags have precedence over the 2-bit tags. A decoder must check for the +presence of an 8-bit tag first. + +The byte stream's end is marked with 7 0x00 bytes followed a single 0x01 byte. + + +The possible chunks are: + + +.- QOI_OP_INDEX ----------. +| Byte[0] | +| 7 6 5 4 3 2 1 0 | +|-------+-----------------| +| 0 0 | index | +`-------------------------` +2-bit tag b00 +6-bit index into the color index array: 0..63 + +A valid encoder must not issue 7 or more consecutive QOI_OP_INDEX chunks to the +index 0, to avoid confusion with the 8 byte end marker. + + +.- QOI_OP_DIFF -----------. +| Byte[0] | +| 7 6 5 4 3 2 1 0 | +|-------+-----+-----+-----| +| 0 1 | dr | dg | db | +`-------------------------` +2-bit tag b01 +2-bit red channel difference from the previous pixel between -2..1 +2-bit green channel difference from the previous pixel between -2..1 +2-bit blue channel difference from the previous pixel between -2..1 + +The difference to the current channel values are using a wraparound operation, +so "1 - 2" will result in 255, while "255 + 1" will result in 0. + +Values are stored as unsigned integers with a bias of 2. E.g. -2 is stored as +0 (b00). 1 is stored as 3 (b11). + +The alpha value remains unchanged from the previous pixel. + + +.- QOI_OP_LUMA -------------------------------------. +| Byte[0] | Byte[1] | +| 7 6 5 4 3 2 1 0 | 7 6 5 4 3 2 1 0 | +|-------+-----------------+-------------+-----------| +| 1 0 | green diff | dr - dg | db - dg | +`---------------------------------------------------` +2-bit tag b10 +6-bit green channel difference from the previous pixel -32..31 +4-bit red channel difference minus green channel difference -8..7 +4-bit blue channel difference minus green channel difference -8..7 + +The green channel is used to indicate the general direction of change and is +encoded in 6 bits. The red and blue channels (dr and db) base their diffs off +of the green channel difference and are encoded in 4 bits. I.e.: + dr_dg = (last_px.r - cur_px.r) - (last_px.g - cur_px.g) + db_dg = (last_px.b - cur_px.b) - (last_px.g - cur_px.g) + +The difference to the current channel values are using a wraparound operation, +so "10 - 13" will result in 253, while "250 + 7" will result in 1. + +Values are stored as unsigned integers with a bias of 32 for the green channel +and a bias of 8 for the red and blue channel. + +The alpha value remains unchanged from the previous pixel. + + +.- QOI_OP_RUN ------------. +| Byte[0] | +| 7 6 5 4 3 2 1 0 | +|-------+-----------------| +| 1 1 | run | +`-------------------------` +2-bit tag b11 +6-bit run-length repeating the previous pixel: 1..62 + +The run-length is stored with a bias of -1. Note that the run-lengths 63 and 64 +(b111110 and b111111) are illegal as they are occupied by the QOI_OP_RGB and +QOI_OP_RGBA tags. + + +.- QOI_OP_RGB ------------------------------------------. +| Byte[0] | Byte[1] | Byte[2] | Byte[3] | +| 7 6 5 4 3 2 1 0 | 7 .. 0 | 7 .. 0 | 7 .. 0 | +|-------------------------+---------+---------+---------| +| 1 1 1 1 1 1 1 0 | red | green | blue | +`-------------------------------------------------------` +8-bit tag b11111110 +8-bit red channel value +8-bit green channel value +8-bit blue channel value + +The alpha value remains unchanged from the previous pixel. + + +.- QOI_OP_RGBA ---------------------------------------------------. +| Byte[0] | Byte[1] | Byte[2] | Byte[3] | Byte[4] | +| 7 6 5 4 3 2 1 0 | 7 .. 0 | 7 .. 0 | 7 .. 0 | 7 .. 0 | +|-------------------------+---------+---------+---------+---------| +| 1 1 1 1 1 1 1 1 | red | green | blue | alpha | +`-----------------------------------------------------------------` +8-bit tag b11111111 +8-bit red channel value +8-bit green channel value +8-bit blue channel value +8-bit alpha channel value + +*/ + + +/* ----------------------------------------------------------------------------- +Header - Public functions */ + +#ifndef QOI_H +#define QOI_H + +#ifdef __cplusplus +extern "C" { +#endif + +/* A pointer to a qoi_desc struct has to be supplied to all of qoi's functions. +It describes either the input format (for qoi_write and qoi_encode), or is +filled with the description read from the file header (for qoi_read and +qoi_decode). + +The colorspace in this qoi_desc is an enum where + 0 = sRGB, i.e. gamma scaled RGB channels and a linear alpha channel + 1 = all channels are linear +You may use the constants QOI_SRGB or QOI_LINEAR. The colorspace is purely +informative. It will be saved to the file header, but does not affect +en-/decoding in any way. */ + +#define QOI_SRGB 0 +#define QOI_LINEAR 1 + +typedef struct { + unsigned int width; + unsigned int height; + unsigned char channels; + unsigned char colorspace; +} qoi_desc; + +#ifndef QOI_NO_STDIO + +/* Encode raw RGB or RGBA pixels into a QOI image and write it to the file +system. The qoi_desc struct must be filled with the image width, height, +number of channels (3 = RGB, 4 = RGBA) and the colorspace. + +The function returns 0 on failure (invalid parameters, or fopen or malloc +failed) or the number of bytes written on success. */ + +int qoi_write(const char *filename, const void *data, const qoi_desc *desc); + + +/* Read and decode a QOI image from the file system. If channels is 0, the +number of channels from the file header is used. If channels is 3 or 4 the +output format will be forced into this number of channels. + +The function either returns NULL on failure (invalid data, or malloc or fopen +failed) or a pointer to the decoded pixels. On success, the qoi_desc struct +will be filled with the description from the file header. + +The returned pixel data should be free()d after use. */ + +void *qoi_read(const char *filename, qoi_desc *desc, int channels); + +#endif /* QOI_NO_STDIO */ + + +/* Encode raw RGB or RGBA pixels into a QOI image in memory. + +The function either returns NULL on failure (invalid parameters or malloc +failed) or a pointer to the encoded data on success. On success the out_len +is set to the size in bytes of the encoded data. + +The returned qoi data should be free()d after use. */ + +void *qoi_encode(const void *data, const qoi_desc *desc, int *out_len); + + +/* Decode a QOI image from memory. + +The function either returns NULL on failure (invalid parameters or malloc +failed) or a pointer to the decoded pixels. On success, the qoi_desc struct +is filled with the description from the file header. + +The returned pixel data should be free()d after use. */ + +void *qoi_decode(const void *data, int size, qoi_desc *desc, int channels); + + +#ifdef __cplusplus +} +#endif +#endif /* QOI_H */ + + +/* ----------------------------------------------------------------------------- +Implementation */ + +#ifdef QOI_IMPLEMENTATION +#include <stdlib.h> +#include <string.h> + +#ifndef QOI_MALLOC + #define QOI_MALLOC(sz) malloc(sz) + #define QOI_FREE(p) free(p) +#endif +#ifndef QOI_ZEROARR + #define QOI_ZEROARR(a) memset((a),0,sizeof(a)) +#endif + +#define QOI_OP_INDEX 0x00 /* 00xxxxxx */ +#define QOI_OP_DIFF 0x40 /* 01xxxxxx */ +#define QOI_OP_LUMA 0x80 /* 10xxxxxx */ +#define QOI_OP_RUN 0xc0 /* 11xxxxxx */ +#define QOI_OP_RGB 0xfe /* 11111110 */ +#define QOI_OP_RGBA 0xff /* 11111111 */ + +#define QOI_MASK_2 0xc0 /* 11000000 */ + +#define QOI_COLOR_HASH(C) (C.rgba.r*3 + C.rgba.g*5 + C.rgba.b*7 + C.rgba.a*11) +#define QOI_MAGIC \ + (((unsigned int)'q') << 24 | ((unsigned int)'o') << 16 | \ + ((unsigned int)'i') << 8 | ((unsigned int)'f')) +#define QOI_HEADER_SIZE 14 + +/* 2GB is the max file size that this implementation can safely handle. We guard +against anything larger than that, assuming the worst case with 5 bytes per +pixel, rounded down to a nice clean value. 400 million pixels ought to be +enough for anybody. */ +#define QOI_PIXELS_MAX ((unsigned int)400000000) + +typedef union { + struct { unsigned char r, g, b, a; } rgba; + unsigned int v; +} qoi_rgba_t; + +static const unsigned char qoi_padding[8] = {0,0,0,0,0,0,0,1}; + +static void qoi_write_32(unsigned char *bytes, int *p, unsigned int v) { + bytes[(*p)++] = (0xff000000 & v) >> 24; + bytes[(*p)++] = (0x00ff0000 & v) >> 16; + bytes[(*p)++] = (0x0000ff00 & v) >> 8; + bytes[(*p)++] = (0x000000ff & v); +} + +static unsigned int qoi_read_32(const unsigned char *bytes, int *p) { + unsigned int a = bytes[(*p)++]; + unsigned int b = bytes[(*p)++]; + unsigned int c = bytes[(*p)++]; + unsigned int d = bytes[(*p)++]; + return a << 24 | b << 16 | c << 8 | d; +} + +void *qoi_encode(const void *data, const qoi_desc *desc, int *out_len) { + int i, max_size, p, run; + int px_len, px_end, px_pos, channels; + unsigned char *bytes; + const unsigned char *pixels; + qoi_rgba_t index[64]; + qoi_rgba_t px, px_prev; + + if ( + data == NULL || out_len == NULL || desc == NULL || + desc->width == 0 || desc->height == 0 || + desc->channels < 3 || desc->channels > 4 || + desc->colorspace > 1 || + desc->height >= QOI_PIXELS_MAX / desc->width + ) { + return NULL; + } + + max_size = + desc->width * desc->height * (desc->channels + 1) + + QOI_HEADER_SIZE + sizeof(qoi_padding); + + p = 0; + bytes = (unsigned char *) QOI_MALLOC(max_size); + if (!bytes) { + return NULL; + } + + qoi_write_32(bytes, &p, QOI_MAGIC); + qoi_write_32(bytes, &p, desc->width); + qoi_write_32(bytes, &p, desc->height); + bytes[p++] = desc->channels; + bytes[p++] = desc->colorspace; + + + pixels = (const unsigned char *)data; + + QOI_ZEROARR(index); + + run = 0; + px_prev.rgba.r = 0; + px_prev.rgba.g = 0; + px_prev.rgba.b = 0; + px_prev.rgba.a = 255; + px = px_prev; + + px_len = desc->width * desc->height * desc->channels; + px_end = px_len - desc->channels; + channels = desc->channels; + + for (px_pos = 0; px_pos < px_len; px_pos += channels) { + if (channels == 4) { + px = *(qoi_rgba_t *)(pixels + px_pos); + } + else { + px.rgba.r = pixels[px_pos + 0]; + px.rgba.g = pixels[px_pos + 1]; + px.rgba.b = pixels[px_pos + 2]; + } + + if (px.v == px_prev.v) { + run++; + if (run == 62 || px_pos == px_end) { + bytes[p++] = QOI_OP_RUN | (run - 1); + run = 0; + } + } + else { + int index_pos; + + if (run > 0) { + bytes[p++] = QOI_OP_RUN | (run - 1); + run = 0; + } + + index_pos = QOI_COLOR_HASH(px) % 64; + + if (index[index_pos].v == px.v) { + bytes[p++] = QOI_OP_INDEX | index_pos; + } + else { + index[index_pos] = px; + + if (px.rgba.a == px_prev.rgba.a) { + signed char vr = px.rgba.r - px_prev.rgba.r; + signed char vg = px.rgba.g - px_prev.rgba.g; + signed char vb = px.rgba.b - px_prev.rgba.b; + + signed char vg_r = vr - vg; + signed char vg_b = vb - vg; + + if ( + vr > -3 && vr < 2 && + vg > -3 && vg < 2 && + vb > -3 && vb < 2 + ) { + bytes[p++] = QOI_OP_DIFF | (vr + 2) << 4 | (vg + 2) << 2 | (vb + 2); + } + else if ( + vg_r > -9 && vg_r < 8 && + vg > -33 && vg < 32 && + vg_b > -9 && vg_b < 8 + ) { + bytes[p++] = QOI_OP_LUMA | (vg + 32); + bytes[p++] = (vg_r + 8) << 4 | (vg_b + 8); + } + else { + bytes[p++] = QOI_OP_RGB; + bytes[p++] = px.rgba.r; + bytes[p++] = px.rgba.g; + bytes[p++] = px.rgba.b; + } + } + else { + bytes[p++] = QOI_OP_RGBA; + bytes[p++] = px.rgba.r; + bytes[p++] = px.rgba.g; + bytes[p++] = px.rgba.b; + bytes[p++] = px.rgba.a; + } + } + } + px_prev = px; + } + + for (i = 0; i < (int)sizeof(qoi_padding); i++) { + bytes[p++] = qoi_padding[i]; + } + + *out_len = p; + return bytes; +} + +void *qoi_decode(const void *data, int size, qoi_desc *desc, int channels) { + const unsigned char *bytes; + unsigned int header_magic; + unsigned char *pixels; + qoi_rgba_t index[64]; + qoi_rgba_t px; + int px_len, chunks_len, px_pos; + int p = 0, run = 0; + + if ( + data == NULL || desc == NULL || + (channels != 0 && channels != 3 && channels != 4) || + size < QOI_HEADER_SIZE + (int)sizeof(qoi_padding) + ) { + return NULL; + } + + bytes = (const unsigned char *)data; + + header_magic = qoi_read_32(bytes, &p); + desc->width = qoi_read_32(bytes, &p); + desc->height = qoi_read_32(bytes, &p); + desc->channels = bytes[p++]; + desc->colorspace = bytes[p++]; + + if ( + desc->width == 0 || desc->height == 0 || + desc->channels < 3 || desc->channels > 4 || + desc->colorspace > 1 || + header_magic != QOI_MAGIC || + desc->height >= QOI_PIXELS_MAX / desc->width + ) { + return NULL; + } + + if (channels == 0) { + channels = desc->channels; + } + + px_len = desc->width * desc->height * channels; + pixels = (unsigned char *) QOI_MALLOC(px_len); + if (!pixels) { + return NULL; + } + + QOI_ZEROARR(index); + px.rgba.r = 0; + px.rgba.g = 0; + px.rgba.b = 0; + px.rgba.a = 255; + + chunks_len = size - (int)sizeof(qoi_padding); + for (px_pos = 0; px_pos < px_len; px_pos += channels) { + if (run > 0) { + run--; + } + else if (p < chunks_len) { + int b1 = bytes[p++]; + + if (b1 == QOI_OP_RGB) { + px.rgba.r = bytes[p++]; + px.rgba.g = bytes[p++]; + px.rgba.b = bytes[p++]; + } + else if (b1 == QOI_OP_RGBA) { + px.rgba.r = bytes[p++]; + px.rgba.g = bytes[p++]; + px.rgba.b = bytes[p++]; + px.rgba.a = bytes[p++]; + } + else if ((b1 & QOI_MASK_2) == QOI_OP_INDEX) { + px = index[b1]; + } + else if ((b1 & QOI_MASK_2) == QOI_OP_DIFF) { + px.rgba.r += ((b1 >> 4) & 0x03) - 2; + px.rgba.g += ((b1 >> 2) & 0x03) - 2; + px.rgba.b += ( b1 & 0x03) - 2; + } + else if ((b1 & QOI_MASK_2) == QOI_OP_LUMA) { + int b2 = bytes[p++]; + int vg = (b1 & 0x3f) - 32; + px.rgba.r += vg - 8 + ((b2 >> 4) & 0x0f); + px.rgba.g += vg; + px.rgba.b += vg - 8 + (b2 & 0x0f); + } + else if ((b1 & QOI_MASK_2) == QOI_OP_RUN) { + run = (b1 & 0x3f); + } + + index[QOI_COLOR_HASH(px) % 64] = px; + } + + if (channels == 4) { + *(qoi_rgba_t*)(pixels + px_pos) = px; + } + else { + pixels[px_pos + 0] = px.rgba.r; + pixels[px_pos + 1] = px.rgba.g; + pixels[px_pos + 2] = px.rgba.b; + } + } + + return pixels; +} + +#ifndef QOI_NO_STDIO +#include <stdio.h> + +int qoi_write(const char *filename, const void *data, const qoi_desc *desc) { + FILE *f = fopen(filename, "wb"); + int size; + void *encoded; + + if (!f) { + return 0; + } + + encoded = qoi_encode(data, desc, &size); + if (!encoded) { + fclose(f); + return 0; + } + + fwrite(encoded, 1, size, f); + fclose(f); + + QOI_FREE(encoded); + return size; +} + +void *qoi_read(const char *filename, qoi_desc *desc, int channels) { + FILE *f = fopen(filename, "rb"); + int size, bytes_read; + void *pixels, *data; + + if (!f) { + return NULL; + } + + fseek(f, 0, SEEK_END); + size = ftell(f); + if (size <= 0) { + fclose(f); + return NULL; + } + fseek(f, 0, SEEK_SET); + + data = QOI_MALLOC(size); + if (!data) { + fclose(f); + return NULL; + } + + bytes_read = fread(data, 1, size, f); + fclose(f); + + pixels = qoi_decode(data, bytes_read, desc, channels); + QOI_FREE(data); + return pixels; +} + +#endif /* QOI_NO_STDIO */ +#endif /* QOI_IMPLEMENTATION */ diff --git a/vendor/qoi/ext/qoi/qoibench.c b/vendor/qoi/ext/qoi/qoibench.c new file mode 100644 index 0000000..2c3df68 --- /dev/null +++ b/vendor/qoi/ext/qoi/qoibench.c @@ -0,0 +1,650 @@ +/* + +Simple benchmark suite for png, stbi and qoi + +Requires libpng, "stb_image.h" and "stb_image_write.h" +Compile with: + gcc qoibench.c -std=gnu99 -lpng -O3 -o qoibench + +Dominic Szablewski - https://phoboslab.org + + +-- LICENSE: The MIT License(MIT) + +Copyright(c) 2021 Dominic Szablewski + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files(the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and / or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions : +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + +*/ + +#include <stdio.h> +#include <dirent.h> +#include <png.h> + +#define STB_IMAGE_IMPLEMENTATION +#define STBI_ONLY_PNG +#define STBI_NO_LINEAR +#include "stb_image.h" + +#define STB_IMAGE_WRITE_IMPLEMENTATION +#include "stb_image_write.h" + +#define QOI_IMPLEMENTATION +#include "qoi.h" + + + + +// ----------------------------------------------------------------------------- +// Cross platform high resolution timer +// From https://gist.github.com/ForeverZer0/0a4f80fc02b96e19380ebb7a3debbee5 + +#include <stdint.h> +#if defined(__linux) + #define HAVE_POSIX_TIMER + #include <time.h> + #ifdef CLOCK_MONOTONIC + #define CLOCKID CLOCK_MONOTONIC + #else + #define CLOCKID CLOCK_REALTIME + #endif +#elif defined(__APPLE__) + #define HAVE_MACH_TIMER + #include <mach/mach_time.h> +#elif defined(_WIN32) + #define WIN32_LEAN_AND_MEAN + #include <windows.h> +#endif + +static uint64_t ns() { + static uint64_t is_init = 0; +#if defined(__APPLE__) + static mach_timebase_info_data_t info; + if (0 == is_init) { + mach_timebase_info(&info); + is_init = 1; + } + uint64_t now; + now = mach_absolute_time(); + now *= info.numer; + now /= info.denom; + return now; +#elif defined(__linux) + static struct timespec linux_rate; + if (0 == is_init) { + clock_getres(CLOCKID, &linux_rate); + is_init = 1; + } + uint64_t now; + struct timespec spec; + clock_gettime(CLOCKID, &spec); + now = spec.tv_sec * 1.0e9 + spec.tv_nsec; + return now; +#elif defined(_WIN32) + static LARGE_INTEGER win_frequency; + if (0 == is_init) { + QueryPerformanceFrequency(&win_frequency); + is_init = 1; + } + LARGE_INTEGER now; + QueryPerformanceCounter(&now); + return (uint64_t) ((1e9 * now.QuadPart) / win_frequency.QuadPart); +#endif +} + +#define STRINGIFY(x) #x +#define TOSTRING(x) STRINGIFY(x) +#define ERROR(...) printf("abort at line " TOSTRING(__LINE__) ": " __VA_ARGS__); printf("\n"); exit(1) + + +// ----------------------------------------------------------------------------- +// libpng encode/decode wrappers +// Seriously, who thought this was a good abstraction for an API to read/write +// images? + +typedef struct { + int size; + int capacity; + unsigned char *data; +} libpng_write_t; + +void libpng_encode_callback(png_structp png_ptr, png_bytep data, png_size_t length) { + libpng_write_t *write_data = (libpng_write_t*)png_get_io_ptr(png_ptr); + if (write_data->size + length >= write_data->capacity) { + ERROR("PNG write"); + } + memcpy(write_data->data + write_data->size, data, length); + write_data->size += length; +} + +void *libpng_encode(void *pixels, int w, int h, int channels, int *out_len) { + png_structp png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); + if (!png) { + ERROR("png_create_write_struct"); + } + + png_infop info = png_create_info_struct(png); + if (!info) { + ERROR("png_create_info_struct"); + } + + if (setjmp(png_jmpbuf(png))) { + ERROR("png_jmpbuf"); + } + + // Output is 8bit depth, RGBA format. + png_set_IHDR( + png, + info, + w, h, + 8, + channels == 3 ? PNG_COLOR_TYPE_RGB : PNG_COLOR_TYPE_RGBA, + PNG_INTERLACE_NONE, + PNG_COMPRESSION_TYPE_DEFAULT, + PNG_FILTER_TYPE_DEFAULT + ); + + png_bytep row_pointers[h]; + for(int y = 0; y < h; y++){ + row_pointers[y] = ((unsigned char *)pixels + y * w * channels); + } + + libpng_write_t write_data = { + .size = 0, + .capacity = w * h * channels, + .data = malloc(w * h * channels) + }; + + png_set_rows(png, info, row_pointers); + png_set_write_fn(png, &write_data, libpng_encode_callback, NULL); + png_write_png(png, info, PNG_TRANSFORM_IDENTITY, NULL); + + png_destroy_write_struct(&png, &info); + + *out_len = write_data.size; + return write_data.data; +} + + +typedef struct { + int pos; + int size; + unsigned char *data; +} libpng_read_t; + +void png_decode_callback(png_structp png, png_bytep data, png_size_t length) { + libpng_read_t *read_data = (libpng_read_t*)png_get_io_ptr(png); + if (read_data->pos + length > read_data->size) { + ERROR("PNG read %d bytes at pos %d (size: %d)", length, read_data->pos, read_data->size); + } + memcpy(data, read_data->data + read_data->pos, length); + read_data->pos += length; +} + +void png_warning_callback(png_structp png_ptr, png_const_charp warning_msg) { + // Ignore warnings about sRGB profiles and such. +} + +void *libpng_decode(void *data, int size, int *out_w, int *out_h) { + png_structp png = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, png_warning_callback); + if (!png) { + ERROR("png_create_read_struct"); + } + + png_infop info = png_create_info_struct(png); + if (!info) { + ERROR("png_create_info_struct"); + } + + libpng_read_t read_data = { + .pos = 0, + .size = size, + .data = data + }; + + png_set_read_fn(png, &read_data, png_decode_callback); + png_set_sig_bytes(png, 0); + png_read_info(png, info); + + png_uint_32 w, h; + int bitDepth, colorType, interlaceType; + png_get_IHDR(png, info, &w, &h, &bitDepth, &colorType, &interlaceType, NULL, NULL); + + // 16 bit -> 8 bit + png_set_strip_16(png); + + // 1, 2, 4 bit -> 8 bit + if (bitDepth < 8) { + png_set_packing(png); + } + + if (colorType & PNG_COLOR_MASK_PALETTE) { + png_set_expand(png); + } + + if (!(colorType & PNG_COLOR_MASK_COLOR)) { + png_set_gray_to_rgb(png); + } + + // set paletted or RGB images with transparency to full alpha so we get RGBA + if (png_get_valid(png, info, PNG_INFO_tRNS)) { + png_set_tRNS_to_alpha(png); + } + + // make sure every pixel has an alpha value + if (!(colorType & PNG_COLOR_MASK_ALPHA)) { + png_set_filler(png, 255, PNG_FILLER_AFTER); + } + + png_read_update_info(png, info); + + unsigned char* out = malloc(w * h * 4); + *out_w = w; + *out_h = h; + + // png_uint_32 rowBytes = png_get_rowbytes(png, info); + png_bytep row_pointers[h]; + for (png_uint_32 row = 0; row < h; row++ ) { + row_pointers[row] = (png_bytep)(out + (row * w * 4)); + } + + png_read_image(png, row_pointers); + png_read_end(png, info); + png_destroy_read_struct( &png, &info, NULL); + + return out; +} + + +// ----------------------------------------------------------------------------- +// stb_image encode callback + +void stbi_write_callback(void *context, void *data, int size) { + int *encoded_size = (int *)context; + *encoded_size += size; + // In theory we'd need to do another malloc(), memcpy() and free() here to + // be fair to the other decode functions... +} + + +// ----------------------------------------------------------------------------- +// function to load a whole file into memory + +void *fload(const char *path, int *out_size) { + FILE *fh = fopen(path, "rb"); + if (!fh) { + ERROR("Can't open file"); + } + + fseek(fh, 0, SEEK_END); + int size = ftell(fh); + fseek(fh, 0, SEEK_SET); + + void *buffer = malloc(size); + if (!buffer) { + ERROR("Malloc for %d bytes failed", size); + } + + if (!fread(buffer, size, 1, fh)) { + ERROR("Can't read file %s", path); + } + fclose(fh); + + *out_size = size; + return buffer; +} + + +// ----------------------------------------------------------------------------- +// benchmark runner + + +int opt_runs = 1; +int opt_nopng = 0; +int opt_nowarmup = 0; +int opt_noverify = 0; +int opt_nodecode = 0; +int opt_noencode = 0; +int opt_norecurse = 0; +int opt_onlytotals = 0; + + +typedef struct { + uint64_t size; + uint64_t encode_time; + uint64_t decode_time; +} benchmark_lib_result_t; + +typedef struct { + int count; + uint64_t raw_size; + uint64_t px; + int w; + int h; + benchmark_lib_result_t libpng; + benchmark_lib_result_t stbi; + benchmark_lib_result_t qoi; +} benchmark_result_t; + + +void benchmark_print_result(benchmark_result_t res) { + res.px /= res.count; + res.raw_size /= res.count; + res.libpng.encode_time /= res.count; + res.libpng.decode_time /= res.count; + res.libpng.size /= res.count; + res.stbi.encode_time /= res.count; + res.stbi.decode_time /= res.count; + res.stbi.size /= res.count; + res.qoi.encode_time /= res.count; + res.qoi.decode_time /= res.count; + res.qoi.size /= res.count; + + double px = res.px; + printf(" decode ms encode ms decode mpps encode mpps size kb rate\n"); + if (!opt_nopng) { + printf( + "libpng: %8.1f %8.1f %8.2f %8.2f %8d %4.1f%%\n", + (double)res.libpng.decode_time/1000000.0, + (double)res.libpng.encode_time/1000000.0, + (res.libpng.decode_time > 0 ? px / ((double)res.libpng.decode_time/1000.0) : 0), + (res.libpng.encode_time > 0 ? px / ((double)res.libpng.encode_time/1000.0) : 0), + res.libpng.size/1024, + ((double)res.libpng.size/(double)res.raw_size) * 100.0 + ); + printf( + "stbi: %8.1f %8.1f %8.2f %8.2f %8d %4.1f%%\n", + (double)res.stbi.decode_time/1000000.0, + (double)res.stbi.encode_time/1000000.0, + (res.stbi.decode_time > 0 ? px / ((double)res.stbi.decode_time/1000.0) : 0), + (res.stbi.encode_time > 0 ? px / ((double)res.stbi.encode_time/1000.0) : 0), + res.stbi.size/1024, + ((double)res.stbi.size/(double)res.raw_size) * 100.0 + ); + } + printf( + "qoi: %8.1f %8.1f %8.2f %8.2f %8d %4.1f%%\n", + (double)res.qoi.decode_time/1000000.0, + (double)res.qoi.encode_time/1000000.0, + (res.qoi.decode_time > 0 ? px / ((double)res.qoi.decode_time/1000.0) : 0), + (res.qoi.encode_time > 0 ? px / ((double)res.qoi.encode_time/1000.0) : 0), + res.qoi.size/1024, + ((double)res.qoi.size/(double)res.raw_size) * 100.0 + ); + printf("\n"); +} + +// Run __VA_ARGS__ a number of times and measure the time taken. The first +// run is ignored. +#define BENCHMARK_FN(NOWARMUP, RUNS, AVG_TIME, ...) \ + do { \ + uint64_t time = 0; \ + for (int i = NOWARMUP; i <= RUNS; i++) { \ + uint64_t time_start = ns(); \ + __VA_ARGS__ \ + uint64_t time_end = ns(); \ + if (i > 0) { \ + time += time_end - time_start; \ + } \ + } \ + AVG_TIME = time / RUNS; \ + } while (0) + + +benchmark_result_t benchmark_image(const char *path) { + int encoded_png_size; + int encoded_qoi_size; + int w; + int h; + int channels; + + // Load the encoded PNG, encoded QOI and raw pixels into memory + if(!stbi_info(path, &w, &h, &channels)) { + ERROR("Error decoding header %s", path); + } + + if (channels != 3) { + channels = 4; + } + + void *pixels = (void *)stbi_load(path, &w, &h, NULL, channels); + void *encoded_png = fload(path, &encoded_png_size); + void *encoded_qoi = qoi_encode(pixels, &(qoi_desc){ + .width = w, + .height = h, + .channels = channels, + .colorspace = QOI_SRGB + }, &encoded_qoi_size); + + if (!pixels || !encoded_qoi || !encoded_png) { + ERROR("Error decoding %s", path); + } + + // Verify QOI Output + + if (!opt_noverify) { + qoi_desc dc; + void *pixels_qoi = qoi_decode(encoded_qoi, encoded_qoi_size, &dc, channels); + if (memcmp(pixels, pixels_qoi, w * h * channels) != 0) { + ERROR("QOI roundtrip pixel mismatch for %s", path); + } + free(pixels_qoi); + } + + + + benchmark_result_t res = {0}; + res.count = 1; + res.raw_size = w * h * channels; + res.px = w * h; + res.w = w; + res.h = h; + + + // Decoding + + if (!opt_nodecode) { + if (!opt_nopng) { + BENCHMARK_FN(opt_nowarmup, opt_runs, res.libpng.decode_time, { + int dec_w, dec_h; + void *dec_p = libpng_decode(encoded_png, encoded_png_size, &dec_w, &dec_h); + free(dec_p); + }); + + BENCHMARK_FN(opt_nowarmup, opt_runs, res.stbi.decode_time, { + int dec_w, dec_h, dec_channels; + void *dec_p = stbi_load_from_memory(encoded_png, encoded_png_size, &dec_w, &dec_h, &dec_channels, 4); + free(dec_p); + }); + } + + BENCHMARK_FN(opt_nowarmup, opt_runs, res.qoi.decode_time, { + qoi_desc desc; + void *dec_p = qoi_decode(encoded_qoi, encoded_qoi_size, &desc, 4); + free(dec_p); + }); + } + + + // Encoding + if (!opt_noencode) { + if (!opt_nopng) { + BENCHMARK_FN(opt_nowarmup, opt_runs, res.libpng.encode_time, { + int enc_size; + void *enc_p = libpng_encode(pixels, w, h, channels, &enc_size); + res.libpng.size = enc_size; + free(enc_p); + }); + + BENCHMARK_FN(opt_nowarmup, opt_runs, res.stbi.encode_time, { + int enc_size = 0; + stbi_write_png_to_func(stbi_write_callback, &enc_size, w, h, channels, pixels, 0); + res.stbi.size = enc_size; + }); + } + + BENCHMARK_FN(opt_nowarmup, opt_runs, res.qoi.encode_time, { + int enc_size; + void *enc_p = qoi_encode(pixels, &(qoi_desc){ + .width = w, + .height = h, + .channels = channels, + .colorspace = QOI_SRGB + }, &enc_size); + res.qoi.size = enc_size; + free(enc_p); + }); + } + + free(pixels); + free(encoded_png); + free(encoded_qoi); + + return res; +} + +void benchmark_directory(const char *path, benchmark_result_t *grand_total) { + DIR *dir = opendir(path); + if (!dir) { + ERROR("Couldn't open directory %s", path); + } + + struct dirent *file; + + if (!opt_norecurse) { + for (int i = 0; (file = readdir(dir)) != NULL; i++) { + if ( + file->d_type & DT_DIR && + strcmp(file->d_name, ".") != 0 && + strcmp(file->d_name, "..") != 0 + ) { + char subpath[1024]; + snprintf(subpath, 1024, "%s/%s", path, file->d_name); + benchmark_directory(subpath, grand_total); + } + } + rewinddir(dir); + } + + float total_percentage = 0; + int total_size = 0; + + benchmark_result_t dir_total = {0}; + + int has_shown_head = 0; + for (int i = 0; (file = readdir(dir)) != NULL; i++) { + if (strcmp(file->d_name + strlen(file->d_name) - 4, ".png") != 0) { + continue; + } + + if (!has_shown_head) { + has_shown_head = 1; + printf("## Benchmarking %s/*.png -- %d runs\n\n", path, opt_runs); + } + + char *file_path = malloc(strlen(file->d_name) + strlen(path)+8); + sprintf(file_path, "%s/%s", path, file->d_name); + + benchmark_result_t res = benchmark_image(file_path); + + if (!opt_onlytotals) { + printf("## %s size: %dx%d\n", file_path, res.w, res.h); + benchmark_print_result(res); + } + + free(file_path); + + dir_total.count++; + dir_total.raw_size += res.raw_size; + dir_total.px += res.px; + dir_total.libpng.encode_time += res.libpng.encode_time; + dir_total.libpng.decode_time += res.libpng.decode_time; + dir_total.libpng.size += res.libpng.size; + dir_total.stbi.encode_time += res.stbi.encode_time; + dir_total.stbi.decode_time += res.stbi.decode_time; + dir_total.stbi.size += res.stbi.size; + dir_total.qoi.encode_time += res.qoi.encode_time; + dir_total.qoi.decode_time += res.qoi.decode_time; + dir_total.qoi.size += res.qoi.size; + + grand_total->count++; + grand_total->raw_size += res.raw_size; + grand_total->px += res.px; + grand_total->libpng.encode_time += res.libpng.encode_time; + grand_total->libpng.decode_time += res.libpng.decode_time; + grand_total->libpng.size += res.libpng.size; + grand_total->stbi.encode_time += res.stbi.encode_time; + grand_total->stbi.decode_time += res.stbi.decode_time; + grand_total->stbi.size += res.stbi.size; + grand_total->qoi.encode_time += res.qoi.encode_time; + grand_total->qoi.decode_time += res.qoi.decode_time; + grand_total->qoi.size += res.qoi.size; + } + closedir(dir); + + if (dir_total.count > 0) { + printf("## Total for %s\n", path); + benchmark_print_result(dir_total); + } +} + +int main(int argc, char **argv) { + if (argc < 3) { + printf("Usage: qoibench <iterations> <directory> [options]\n"); + printf("Options:\n"); + printf(" --nowarmup ... don't perform a warmup run\n"); + printf(" --nopng ...... don't run png encode/decode\n"); + printf(" --noverify ... don't verify qoi roundtrip\n"); + printf(" --noencode ... don't run encoders\n"); + printf(" --nodecode ... don't run decoders\n"); + printf(" --norecurse .. don't descend into directories\n"); + printf(" --onlytotals . don't print individual image results\n"); + printf("Examples\n"); + printf(" qoibench 10 images/textures/\n"); + printf(" qoibench 1 images/textures/ --nopng --nowarmup\n"); + exit(1); + } + + for (int i = 3; i < argc; i++) { + if (strcmp(argv[i], "--nowarmup") == 0) { opt_nowarmup = 1; } + else if (strcmp(argv[i], "--nopng") == 0) { opt_nopng = 1; } + else if (strcmp(argv[i], "--noverify") == 0) { opt_noverify = 1; } + else if (strcmp(argv[i], "--noencode") == 0) { opt_noencode = 1; } + else if (strcmp(argv[i], "--nodecode") == 0) { opt_nodecode = 1; } + else if (strcmp(argv[i], "--norecurse") == 0) { opt_norecurse = 1; } + else if (strcmp(argv[i], "--onlytotals") == 0) { opt_onlytotals = 1; } + else { ERROR("Unknown option %s", argv[i]); } + } + + opt_runs = atoi(argv[1]); + if (opt_runs <=0) { + ERROR("Invalid number of runs %d", opt_runs); + } + + benchmark_result_t grand_total = {0}; + benchmark_directory(argv[2], &grand_total); + + if (grand_total.count > 0) { + printf("# Grand total for %s\n", argv[2]); + benchmark_print_result(grand_total); + } + else { + printf("No images found in %s\n", argv[2]); + } + + return 0; +} diff --git a/vendor/qoi/ext/qoi/qoiconv.c b/vendor/qoi/ext/qoi/qoiconv.c new file mode 100644 index 0000000..79aa75c --- /dev/null +++ b/vendor/qoi/ext/qoi/qoiconv.c @@ -0,0 +1,106 @@ +/* + +Command line tool to convert between png <> qoi format + +Requires "stb_image.h" and "stb_image_write.h" +Compile with: + gcc qoiconv.c -std=c99 -O3 -o qoiconv + +Dominic Szablewski - https://phoboslab.org + + +-- LICENSE: The MIT License(MIT) + +Copyright(c) 2021 Dominic Szablewski + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files(the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and / or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions : +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + +*/ + + +#define STB_IMAGE_IMPLEMENTATION +#define STBI_ONLY_PNG +#define STBI_NO_LINEAR +#include "stb_image.h" + +#define STB_IMAGE_WRITE_IMPLEMENTATION +#include "stb_image_write.h" + +#define QOI_IMPLEMENTATION +#include "qoi.h" + + +#define STR_ENDS_WITH(S, E) (strcmp(S + strlen(S) - (sizeof(E)-1), E) == 0) + +int main(int argc, char **argv) { + if (argc < 3) { + puts("Usage: qoiconv <infile> <outfile>"); + puts("Examples:"); + puts(" qoiconv input.png output.qoi"); + puts(" qoiconv input.qoi output.png"); + exit(1); + } + + void *pixels = NULL; + int w, h, channels; + if (STR_ENDS_WITH(argv[1], ".png")) { + if(!stbi_info(argv[1], &w, &h, &channels)) { + printf("Couldn't read header %s\n", argv[1]); + exit(1); + } + + // Force all odd encodings to be RGBA + if(channels != 3) { + channels = 4; + } + + pixels = (void *)stbi_load(argv[1], &w, &h, NULL, channels); + } + else if (STR_ENDS_WITH(argv[1], ".qoi")) { + qoi_desc desc; + pixels = qoi_read(argv[1], &desc, 0); + channels = desc.channels; + w = desc.width; + h = desc.height; + } + + if (pixels == NULL) { + printf("Couldn't load/decode %s\n", argv[1]); + exit(1); + } + + int encoded = 0; + if (STR_ENDS_WITH(argv[2], ".png")) { + encoded = stbi_write_png(argv[2], w, h, channels, pixels, 0); + } + else if (STR_ENDS_WITH(argv[2], ".qoi")) { + encoded = qoi_write(argv[2], pixels, &(qoi_desc){ + .width = w, + .height = h, + .channels = channels, + .colorspace = QOI_SRGB + }); + } + + if (!encoded) { + printf("Couldn't write/encode %s\n", argv[2]); + exit(1); + } + + free(pixels); + return 0; +} diff --git a/vendor/qoi/ext/qoi/qoifuzz.c b/vendor/qoi/ext/qoi/qoifuzz.c new file mode 100644 index 0000000..1b5c792 --- /dev/null +++ b/vendor/qoi/ext/qoi/qoifuzz.c @@ -0,0 +1,51 @@ +/* + +clang fuzzing harness for qoi_decode + +Compile and run with: + clang -fsanitize=address,fuzzer -g -O0 qoifuzz.c && ./a.out + +Dominic Szablewski - https://phoboslab.org + + +-- LICENSE: The MIT License(MIT) + +Copyright(c) 2021 Dominic Szablewski + +Permission is hereby granted, free of charge, to any person obtaining a copy of +this software and associated documentation files(the "Software"), to deal in +the Software without restriction, including without limitation the rights to +use, copy, modify, merge, publish, distribute, sublicense, and / or sell copies +of the Software, and to permit persons to whom the Software is furnished to do +so, subject to the following conditions : +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. + +*/ + + +#define QOI_IMPLEMENTATION +#include "qoi.h" +#include <stddef.h> +#include <stdint.h> + +int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { + int w, h; + if (size < 4) { + return 0; + } + + qoi_desc desc; + void* decoded = qoi_decode((void*)(data + 4), (int)(size - 4), &desc, *((int *)data)); + if (decoded != NULL) { + free(decoded); + } + return 0; +} |