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