media/base/sample_format.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "media/base/sample_format.h"
   6
   7 #include "base/logging.h"
   8
   9 namespace media {
  10
  11 int SampleFormatToBytesPerChannel(SampleFormat sample_format) {
  12   switch (sample_format) {
  13     case kUnknownSampleFormat:
  14       return 0;
  15     case kSampleFormatU8:
  16       return 1;
  17     case kSampleFormatS16:
  18     case kSampleFormatPlanarS16:
  19       return 2;
  20     case kSampleFormatS32:
  21     case kSampleFormatF32:
  22     case kSampleFormatPlanarF32:
  23       return 4;
  24     case kSampleFormatMax:
  25       break;
  26   }
  27
  28   NOTREACHED() << "Invalid sample format provided: " << sample_format;
  29   return 0;
  30 }
  31
  32 const char* SampleFormatToString(SampleFormat sample_format) {
  33   switch(sample_format) {
  34     case kUnknownSampleFormat:
  35       return "Unknown sample format";
  36     case kSampleFormatU8:
  37       return "Unsigned 8-bit with bias of 128";
  38     case kSampleFormatS16:
  39       return "Signed 16-bit";
  40     case kSampleFormatS32:
  41       return "Signed 32-bit";
  42     case kSampleFormatF32:
  43       return "Float 32-bit";
  44     case kSampleFormatPlanarS16:
  45       return "Signed 16-bit planar";
  46     case kSampleFormatPlanarF32:
  47       return "Float 32-bit planar";
  48     case kSampleFormatMax:
  49       break;
  50   }
  51   NOTREACHED() << "Invalid sample format provided: " << sample_format;
  52   return "";
  53 }
  54
  55 }  // namespace media