ya2d_load_JPEG_file FULL

ya2d_Texture* ya2d_load_JPEG_file(const char* filename, int place)
{
    FILE *fd;
    if (!(fd = fopen(filename, "rb"))) {
        goto exit_error;
    }

    struct jpeg_decompress_struct jinfo;
    struct jpeg_error_mgr jerr;
    jinfo.err = jpeg_std_error(&jerr);
    jpeg_create_decompress(&jinfo);
    jpeg_stdio_src(&jinfo, fd);
    jpeg_read_header(&jinfo, 1);

    int row_bytes;
    switch (jinfo.out_color_space) {
    case JCS_RGB:
        row_bytes = jinfo.image_width * 3;
        break;
    default:
        goto exit_close;
    }

    ya2d_Texture *texture = ya2d_create_texture(jinfo.image_width,
                                                jinfo.image_height,
                                                GU_PSM_8888, place);
    JSAMPARRAY buffer = (JSAMPARRAY)malloc(sizeof(JSAMPROW));
    buffer[0] = (JSAMPROW)malloc(sizeof(JSAMPLE) * row_bytes);

    unsigned int i, color, *tex_ptr;
    unsigned char* jpeg_ptr = (unsigned char*)buffer[0];
    void* row_ptr = texture->data;
    jpeg_start_decompress(&jinfo);

    while (jinfo.output_scanline < jinfo.output_height) {
        jpeg_read_scanlines(&jinfo, buffer, 1);
        tex_ptr = (unsigned int*)(row_ptr += texture->stride);
        for (i = 0; i < jinfo.output_width; ++i) {
            color = *(jpeg_ptr++);
            color |= *(jpeg_ptr++)<<8;
            color |= *(jpeg_ptr++)<<16;
            *(tex_ptr++) = color | 0xFF000000;
        }
    }

    jpeg_finish_decompress(&jinfo);
    jpeg_destroy_decompress(&jinfo);

    free(buffer[0]);
    free(buffer);
    fclose(fd);
    return texture;

exit_close:
    fclose(fd);
exit_error:
    return NULL;
}