Get rid of most instance of 'foo == NULL'

core/src/fxcodec/codec/fx_codec_jpx_opj.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include <algorithm>
 #include <limits>
 #include <vector>
 
@@ skipping 420 matching lines @@
 void color_apply_icc_profile(opj_image_t* image) {
   cmsHPROFILE out_prof;
   cmsUInt32Number in_type;
   cmsUInt32Number out_type;
   int* r;
   int* g;
   int* b;
   int max;
   cmsHPROFILE in_prof =
       cmsOpenProfileFromMem(image->icc_profile_buf, image->icc_profile_len);
-  if (in_prof == NULL) {
+  if (!in_prof) {
     return;
   }
   cmsColorSpaceSignature out_space = cmsGetColorSpace(in_prof);
   cmsUInt32Number intent = cmsGetHeaderRenderingIntent(in_prof);
   int max_w = (int)image->comps[0].w;
   int max_h = (int)image->comps[0].h;
   int prec = (int)image->comps[0].prec;
   OPJ_COLOR_SPACE oldspace = image->color_space;
   if (out_space == cmsSigRgbData) {
     if (prec <= 8) {
@@ skipping 20 matching lines @@
     out_type = TYPE_RGB_16;
     out_prof = cmsCreate_sRGBProfile();
     image->color_space = OPJ_CLRSPC_SRGB;
   } else {
     return;
   }
   cmsHTRANSFORM transform =
       cmsCreateTransform(in_prof, in_type, out_prof, out_type, intent, 0);
   cmsCloseProfile(in_prof);
   cmsCloseProfile(out_prof);
-  if (transform == NULL) {
+  if (!transform) {
     image->color_space = oldspace;
     return;
   }
   if (image->numcomps > 2) {
     if (prec <= 8) {
       unsigned char *inbuf, *outbuf, *in, *out;
       max = max_w * max_h;
       cmsUInt32Number nr_samples = max * 3 * sizeof(unsigned char);
       in = inbuf = FX_Alloc(unsigned char, nr_samples);
       out = outbuf = FX_Alloc(unsigned char, nr_samples);
@@ skipping 97 matching lines @@
     cmsHPROFILE in, out;
     cmsHTRANSFORM transform;
     cmsUInt16Number RGB[3];
     cmsCIELab Lab;
     in = cmsCreateLab4Profile(NULL);
     out = cmsCreate_sRGBProfile();
     transform = cmsCreateTransform(in, TYPE_Lab_DBL, out, TYPE_RGB_16,
                                    INTENT_PERCEPTUAL, 0);
     cmsCloseProfile(in);
     cmsCloseProfile(out);
-    if (transform == NULL) {
+    if (!transform) {
       return;
     }
     prec0 = (double)image->comps[0].prec;
     prec1 = (double)image->comps[1].prec;
     prec2 = (double)image->comps[2].prec;
     default_type = row[1];
     if (default_type == 0x44454600) {
       rl = 100;
       ra = 170;
       rb = 200;
@@ skipping 90 matching lines @@
       0x00, 0x00, 0x00, 0x0c, 0x6a, 0x50, 0x20, 0x20, 0x0d, 0x0a, 0x87, 0x0a};
   if (!src_data || src_size < sizeof(szJP2Header))
     return FALSE;
 
   image = NULL;
   m_SrcData = src_data;
   m_SrcSize = src_size;
   DecodeData srcData(const_cast<unsigned char*>(src_data), src_size);
   l_stream = fx_opj_stream_create_memory_stream(&srcData,
                                                 OPJ_J2K_STREAM_CHUNK_SIZE, 1);
-  if (l_stream == NULL) {
+  if (!l_stream) {
     return FALSE;
   }
   opj_dparameters_t parameters;
   opj_set_default_decoder_parameters(&parameters);
   parameters.decod_format = 0;
   parameters.cod_format = 3;
   if (FXSYS_memcmp(m_SrcData, szJP2Header, sizeof(szJP2Header)) == 0) {
     l_codec = opj_create_decompress(OPJ_CODEC_JP2);
     parameters.decod_format = 1;
   } else {
@@ skipping 158 matching lines @@
 bool CCodec_JpxModule::Decode(CJPX_Decoder* pDecoder,
                               uint8_t* dest_data,
                               int pitch,
                               const std::vector<uint8_t>& offsets) {
   return pDecoder->Decode(dest_data, pitch, offsets);
 }
 
 void CCodec_JpxModule::DestroyDecoder(CJPX_Decoder* pDecoder) {
   delete pDecoder;
 }