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     case kSampleFormatPlanarS32:
  24       return 4;
  25   }
  26
  27   NOTREACHED() << "Invalid sample format provided: " << sample_format;
  28   return 0;
  29 }
  30
  31 const char* SampleFormatToString(SampleFormat sample_format) {
  32   switch(sample_format) {
  33     case kUnknownSampleFormat:
  34       return "Unknown sample format";
  35     case kSampleFormatU8:
  36       return "Unsigned 8-bit with bias of 128";
  37     case kSampleFormatS16:
  38       return "Signed 16-bit";
  39     case kSampleFormatS32:
  40       return "Signed 32-bit";
  41     case kSampleFormatF32:
  42       return "Float 32-bit";
  43     case kSampleFormatPlanarS16:
  44       return "Signed 16-bit planar";
  45     case kSampleFormatPlanarF32:
  46       return "Float 32-bit planar";
  47     case kSampleFormatPlanarS32:
  48       return "Signed 32-bit planar";
  49   }
  50   NOTREACHED() << "Invalid sample format provided: " << sample_format;
  51   return "";
  52 }
  53
  54 }  // namespace media