## Coverage Report

#### Created: 2026-04-20 13:39

next uncovered line (L), next uncovered region (R), next uncovered branch (B)

    /home/liu/actions-runner/_work/ccv/ccv/lib/io/_ccv_io_libjpeg.inc

    Line
    Count
    Source
    1
    #include <setjmp.h>
    2
    3
    typedef struct ccv_jpeg_error_mgr_t
    4
    {
    5
      struct jpeg_error_mgr pub;
    6
      jmp_buf setjmp_buffer;
    7
    } ccv_jpeg_error_mgr_t;
    8
    9
    METHODDEF(void) error_exit(j_common_ptr cinfo)
    10
    1
    {
    11
    1
      ccv_jpeg_error_mgr_t* err_mgr = (ccv_jpeg_error_mgr_t*)(cinfo->err);
    12
    13
      /* Return control to the setjmp point */
    14
    1
      longjmp(err_mgr->setjmp_buffer, 1);
    15
    1
    }
    16
    17
    /***************************************************************************
    18
     * following code is for supporting MJPEG image files
    19
     * based on a message of Laurent Pinchart on the video4linux mailing list
    20
     ***************************************************************************/
    21
    22
    /* JPEG DHT Segment for YCrCb omitted from MJPEG data */
    23
    static
    24
    unsigned char _ccv_jpeg_odml_dht[0x1a4] = {
    25
      0xff, 0xc4, 0x01, 0xa2,
    26
    27
      0x00, 0x00, 0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
    28
      0x00, 0x00, 0x00, 0x00, 0x00,
    29
      0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
    30
    31
      0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
    32
      0x00, 0x00, 0x00, 0x00, 0x00,
    33
      0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b,
    34
    35
      0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05, 0x04,
    36
      0x04, 0x00, 0x00, 0x01, 0x7d,
    37
      0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06,
    38
      0x13, 0x51, 0x61, 0x07,
    39
      0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1,
    40
      0x15, 0x52, 0xd1, 0xf0,
    41
      0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19, 0x1a,
    42
      0x25, 0x26, 0x27, 0x28,
    43
      0x29, 0x2a, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45,
    44
      0x46, 0x47, 0x48, 0x49,
    45
      0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64, 0x65,
    46
      0x66, 0x67, 0x68, 0x69,
    47
      0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85,
    48
      0x86, 0x87, 0x88, 0x89,
    49
      0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3,
    50
      0xa4, 0xa5, 0xa6, 0xa7,
    51
      0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba,
    52
      0xc2, 0xc3, 0xc4, 0xc5,
    53
      0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8,
    54
      0xd9, 0xda, 0xe1, 0xe2,
    55
      0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3, 0xf4,
    56
      0xf5, 0xf6, 0xf7, 0xf8,
    57
      0xf9, 0xfa,
    58
    59
      0x11, 0x00, 0x02, 0x01, 0x02, 0x04, 0x04, 0x03, 0x04, 0x07, 0x05, 0x04,
    60
      0x04, 0x00, 0x01, 0x02, 0x77,
    61
      0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41,
    62
      0x51, 0x07, 0x61, 0x71,
    63
      0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xa1, 0xb1, 0xc1, 0x09,
    64
      0x23, 0x33, 0x52, 0xf0,
    65
      0x15, 0x62, 0x72, 0xd1, 0x0a, 0x16, 0x24, 0x34, 0xe1, 0x25, 0xf1, 0x17,
    66
      0x18, 0x19, 0x1a, 0x26,
    67
      0x27, 0x28, 0x29, 0x2a, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x43, 0x44,
    68
      0x45, 0x46, 0x47, 0x48,
    69
      0x49, 0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63, 0x64,
    70
      0x65, 0x66, 0x67, 0x68,
    71
      0x69, 0x6a, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x82, 0x83,
    72
      0x84, 0x85, 0x86, 0x87,
    73
      0x88, 0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a,
    74
      0xa2, 0xa3, 0xa4, 0xa5,
    75
      0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8,
    76
      0xb9, 0xba, 0xc2, 0xc3,
    77
      0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6,
    78
      0xd7, 0xd8, 0xd9, 0xda,
    79
      0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xf2, 0xf3, 0xf4,
    80
      0xf5, 0xf6, 0xf7, 0xf8,
    81
      0xf9, 0xfa
    82
    };
    83
    84
    /*
    85
     * Parse the DHT table.
    86
     * This code comes from jpeg6b (jdmarker.c).
    87
     */
    88
    static int _ccv_jpeg_load_dht(struct jpeg_decompress_struct *info, unsigned char *dht, JHUFF_TBL *ac_tables[], JHUFF_TBL *dc_tables[])
    89
    0
    {
    90
    0
      unsigned int length = (dht[2] << 8) + dht[3] - 2;
    91
    0
      unsigned int pos = 4;
    92
    0
      unsigned int count, i;
    93
    0
      int index;
    94
    95
    0
      JHUFF_TBL **hufftbl;
    96
    0
      unsigned char bits[17];
    97
    0
      unsigned char huffval[256];
    98
    99
    0
      while (length > 16)
    100
    0
      {
    101
    0
        bits[0] = 0;
    102
    0
        index = dht[pos++];
    103
    0
        count = 0;
    104
    0
        for (i = 1; i <= 16; ++i)
    105
    0
        {
    106
    0
          bits[i] = dht[pos++];
    107
    0
          count += bits[i];
    108
    0
        }
    109
    0
        length -= 17;
    110
    111
    0
        if (count > 256 || count > length)
    112
    0
          return -1;
    113
    114
    0
        for (i = 0; i < count; ++i)
    115
    0
          huffval[i] = dht[pos++];
    116
    0
        length -= count;
    117
    118
    0
        if (index & 0x10)
    119
    0
        {
    120
    0
          index -= 0x10;
    121
    0
          hufftbl = &ac_tables[index];
    122
    0
        }
    123
    0
        else
    124
    0
          hufftbl = &dc_tables[index];
    125
    126
    0
        if (index < 0 || index >= NUM_HUFF_TBLS)
    127
    0
          return -1;
    128
    129
    0
        if (*hufftbl == 0)
    130
    0
          *hufftbl = jpeg_alloc_huff_table ((j_common_ptr)info);
    131
    0
        if (*hufftbl == 0)
    132
    0
          return -1;
    133
    134
    0
        memcpy((*hufftbl)->bits, bits, sizeof (*hufftbl)->bits);
    135
    0
        memcpy((*hufftbl)->huffval, huffval, sizeof (*hufftbl)->huffval);
    136
    0
      }
    137
    138
    0
      if (length != 0)
    139
    0
        return -1;
    140
    141
    0
      return 0;
    142
    0
    }
    143
    144
    /***************************************************************************
    145
     * end of code for supportting MJPEG image files
    146
     * based on a message of Laurent Pinchart on the video4linux mailing list
    147
     ***************************************************************************/
    148
    149
    static void _ccv_read_jpeg_fd(FILE* in, ccv_dense_matrix_t** x, int type)
    150
    4
    {
    151
    4
      struct jpeg_decompress_struct cinfo;
    152
    4
      struct ccv_jpeg_error_mgr_t jerr;
    153
    4
      JSAMPARRAY buffer;
    154
    4
      int row_stride;
    155
    4
      cinfo.err = jpeg_std_error(&jerr.pub);
    156
    4
      jerr.pub.error_exit = error_exit;
    157
    4
      if (setjmp(jerr.setjmp_buffer))
    158
    0
      {
    159
    0
        jpeg_destroy_decompress(&cinfo);
    160
    0
        return;
    161
    0
      }
    162
    4
      jpeg_create_decompress(&cinfo);
    163
    164
    4
      jpeg_stdio_src(&cinfo, in);
    165
    166
    4
      jpeg_read_header(&cinfo, TRUE);
    167
    168
    4
      ccv_dense_matrix_t* im = *x;
    169
    4
      if (im == 0)
    170
    4
        *x = im = ccv_dense_matrix_new(cinfo.image_height, cinfo.image_width, (type) ? type0 : CCV_8U | ((cinfo.num_components > 1) ? CCV_C3 : CCV_C10), 0, 0);
    171
    172
      /* yes, this is a mjpeg image format, so load the correct huffman table */
    173
    4
      if (cinfo.ac_huff_tbl_ptrs[0] == 0 && cinfo.ac_huff_tbl_ptrs[1] == 00 && cinfo.dc_huff_tbl_ptrs[0] == 00 && cinfo.dc_huff_tbl_ptrs[1] == 00)
    174
    0
        _ccv_jpeg_load_dht(&cinfo, _ccv_jpeg_odml_dht, cinfo.ac_huff_tbl_ptrs, cinfo.dc_huff_tbl_ptrs);
    175
    176
    4
      if(cinfo.num_components != 4)
    177
    2
      {
    178
    2
        if (cinfo.num_components > 1)
    179
    2
        {
    180
    2
          cinfo.out_color_space = JCS_RGB;
    181
    2
          cinfo.out_color_components = 3;
    182
    2
        } else {
    183
    0
          cinfo.out_color_space = JCS_GRAYSCALE;
    184
    0
          cinfo.out_color_components = 1;
    185
    0
        }
    186
    2
      } else {
    187
    2
        cinfo.out_color_space = JCS_CMYK;
    188
    2
        cinfo.out_color_components = 4;
    189
    2
      }
    190
    191
    4
      jpeg_start_decompress(&cinfo);
    192
    4
      row_stride = cinfo.output_width * 4;
    193
    4
      buffer = (*cinfo.mem->alloc_sarray)((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1);
    194
    195
    4
      unsigned char* ptr = im->data.u8;
    196
    4
      int i;
    197
    4
      int ch = CCV_GET_CHANNEL(im->type);
    198
    4
      if(cinfo.num_components != 4)
    199
    2
      {
    200
    2
        if ((cinfo.num_components > 1 && ch == CCV_C3) || (0cinfo.num_components == 10 && ch == CCV_C10))
    201
    2
        {
    202
          /* no format coversion, direct copy */
    203
    2
          if (im->cols * ch < im->step)
    204
    0
          {
    205
    0
            size_t extra = im->step - im->cols * ch;
    206
            // empty the padding
    207
    0
            while (cinfo.output_scanline < cinfo.output_height)
    208
    0
            {
    209
    0
              jpeg_read_scanlines(&cinfo, buffer, 1);
    210
    0
              memcpy(ptr, buffer[0], im->step);
    211
    0
              memset(ptr + im->cols * ch, 0, extra);
    212
    0
              ptr += im->step;
    213
    0
            }
    214
    2
          } else {
    215
    1.20k
            while (cinfo.output_scanline < cinfo.output_height)
    216
    1.20k
            {
    217
    1.20k
              jpeg_read_scanlines(&cinfo, buffer, 1);
    218
    1.20k
              memcpy(ptr, buffer[0], im->step);
    219
    1.20k
              ptr += im->step;
    220
    1.20k
            }
    221
    2
          }
    222
    2
        } else {
    223
    0
          if (cinfo.num_components > 1 && CCV_GET_CHANNEL(im->type) == CCV_C1)
    224
    0
          {
    225
            /* RGB to gray */
    226
    0
            while (cinfo.output_scanline < cinfo.output_height)
    227
    0
            {
    228
    0
              jpeg_read_scanlines(&cinfo, buffer, 1);
    229
    0
              unsigned char* g = ptr;
    230
    0
              unsigned char* rgb = (unsigned char*)buffer[0];
    231
    0
              for(i = 0; i < im->cols; i++, rgb += 3, g++)
    232
    0
                *g = (unsigned char)((rgb[0] * 6969 + rgb[1] * 23434 + rgb[2] * 2365) >> 15);
    233
    0
              ptr += im->step;
    234
    0
            }
    235
    0
          } else if (cinfo.num_components == 1 && CCV_GET_CHANNEL(im->type) == CCV_C3) {
    236
            /* gray to RGB */
    237
    0
            while (cinfo.output_scanline < cinfo.output_height)
    238
    0
            {
    239
    0
              jpeg_read_scanlines(&cinfo, buffer, 1);
    240
    0
              unsigned char* g = (unsigned char*)buffer[0];
    241
    0
              unsigned char* rgb = ptr;
    242
    0
              for(i = 0; i < im->cols; i++, rgb += 3, g++)
    243
    0
                rgb[0] = rgb[1] = rgb[2] = *g;
    244
    0
              ptr += im->step;
    245
    0
            }
    246
    0
          }
    247
          // empty out the padding
    248
    0
          if (im->cols * ch < im->step)
    249
    0
          {
    250
    0
            size_t extra = im->step - im->cols * ch;
    251
    0
            unsigned char* ptr = im->data.u8 + im->cols * ch;
    252
    0
            for (i = 0; i < im->rows; i++, ptr += im->step)
    253
    0
              memset(ptr, 0, extra);
    254
    0
          }
    255
    0
        }
    256
    2
      } else {
    257
    2
        if (CCV_GET_CHANNEL(im->type) == CCV_C1)
    258
    0
        {
    259
          /* CMYK to gray */
    260
    0
          while (cinfo.output_scanline < cinfo.output_height)
    261
    0
          {
    262
    0
            jpeg_read_scanlines(&cinfo, buffer, 1);
    263
    0
            unsigned char* cmyk = (unsigned char*)buffer[0];
    264
    0
            unsigned char* g = ptr;
    265
    0
            for(i = 0; i < im->cols; i++, g++, cmyk += 4)
    266
    0
            {
    267
    0
              int c = cmyk[0], m = cmyk[1], y = cmyk[2], k = cmyk[3];
    268
    0
              c = k - ((255 - c) * k >> 8);
    269
    0
              m = k - ((255 - m) * k >> 8);
    270
    0
              y = k - ((255 - y) * k >> 8);
    271
    0
              *g = (unsigned char)((c * 6969 + m * 23434 + y * 2365) >> 15);
    272
    0
            }
    273
    0
            ptr += im->step;
    274
    0
          }
    275
    2
        } else if (CCV_GET_CHANNEL(im->type) == CCV_C3) {
    276
          /* CMYK to RGB */
    277
    3.49k
          while (cinfo.output_scanline < cinfo.output_height)
    278
    3.49k
          {
    279
    3.49k
            jpeg_read_scanlines(&cinfo, buffer, 1);
    280
    3.49k
            unsigned char* cmyk = (unsigned char*)buffer[0];
    281
    3.49k
            unsigned char* rgb = ptr;
    282
    8.37M
            for(i = 0; i < im->cols; i++, rgb += 3, cmyk += 48.37M)
    283
    8.37M
            {
    284
    8.37M
              int c = cmyk[0], m = cmyk[1], y = cmyk[2], k = cmyk[3];
    285
    8.37M
              c = k - ((255 - c) * k >> 8);
    286
    8.37M
              m = k - ((255 - m) * k >> 8);
    287
    8.37M
              y = k - ((255 - y) * k >> 8);
    288
    8.37M
              rgb[0] = (unsigned char)c;
    289
    8.37M
              rgb[1] = (unsigned char)m;
    290
    8.37M
              rgb[2] = (unsigned char)y;
    291
    8.37M
            }
    292
    3.49k
            ptr += im->step;
    293
    3.49k
          }
    294
    2
        }
    295
        // empty out the padding
    296
    2
        if (im->cols * ch < im->step)
    297
    0
        {
    298
    0
          size_t extra = im->step - im->cols * ch;
    299
    0
          unsigned char* ptr = im->data.u8 + im->cols * ch;
    300
    0
          for (i = 0; i < im->rows; i++, ptr += im->step)
    301
    0
            memset(ptr, 0, extra);
    302
    0
        }
    303
    2
      }
    304
    305
    4
      jpeg_finish_decompress(&cinfo);
    306
    4
      jpeg_destroy_decompress(&cinfo);
    307
    4
    }
    308
    309
    static int _ccv_write_jpeg_fd(ccv_dense_matrix_t* mat, FILE* fd, void* conf)
    310
    3
    {
    311
    3
      struct jpeg_compress_struct cinfo;
    312
    3
      struct ccv_jpeg_error_mgr_t jerr;
    313
    3
      jpeg_create_compress(&cinfo);
    314
    3
        cinfo.err = jpeg_std_error(&jerr.pub);
    315
    3
      jerr.pub.error_exit = error_exit;
    316
    3
      jpeg_stdio_dest(&cinfo, fd);
    317
    3
      if (setjmp(jerr.setjmp_buffer))
    318
    1
      {
    319
    1
        jpeg_destroy_compress(&cinfo);
    320
    1
        return -1;
    321
    1
      }
    322
    2
      cinfo.image_width = mat->cols;
    323
    2
      cinfo.image_height = mat->rows;
    324
    2
      cinfo.input_components = (CCV_GET_CHANNEL(mat->type) == CCV_C1) ? 10 : 3;
    325
    2
      cinfo.in_color_space = (CCV_GET_CHANNEL(mat->type) == CCV_C1) ? JCS_GRAYSCALE0 : JCS_RGB;
    326
    2
      jpeg_set_defaults(&cinfo);
    327
    2
      if (conf == 0)
    328
    3
        jpeg_set_quality(&cinfo, 95, TRUE);
    329
    18.4E
      else
    330
    18.4E
        jpeg_set_quality(&cinfo, *(int*)conf, TRUE);
    331
    2
      jpeg_start_compress(&cinfo, TRUE);
    332
    2
      int i;
    333
    2
      unsigned char* ptr = mat->data.u8;
    334
    1.25k
      for (i = 0; i < mat->rows; i++1.24k)
    335
    1.24k
      {
    336
    1.24k
        jpeg_write_scanlines(&cinfo, &ptr, 1);
    337
    1.24k
        ptr += mat->step;
    338
    1.24k
      }
    339
    2
      jpeg_finish_compress(&cinfo);
    340
    2
      jpeg_destroy_compress(&cinfo);
    341
    2
      return 0;
    342
    3
    }