src/chromecast/media/cma/base/frame_generator_for_test.cc

   1 // Copyright 2014 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 "chromecast/media/cma/base/frame_generator_for_test.h"
   6
   7 #include "chromecast/media/cma/base/decoder_buffer_adapter.h"
   8 #include "chromecast/media/cma/base/decoder_buffer_base.h"
   9 #include "media/base/decoder_buffer.h"
  10 #include "media/base/decrypt_config.h"
  11
  12 namespace chromecast {
  13 namespace media {
  14
  15 FrameGeneratorForTest::FrameSpec::FrameSpec()
  16     : has_config(false),
  17       is_eos(false),
  18       has_decrypt_config(false),
  19       size(0) {
  20 }
  21
  22 FrameGeneratorForTest::FrameSpec::~FrameSpec() {
  23 }
  24
  25 FrameGeneratorForTest::FrameGeneratorForTest(
  26     const std::vector<FrameSpec> frame_specs)
  27   : frame_specs_(frame_specs),
  28     frame_idx_(0),
  29     total_buffer_size_(0) {
  30 }
  31
  32 FrameGeneratorForTest::~FrameGeneratorForTest() {
  33 }
  34
  35 bool FrameGeneratorForTest::HasDecoderConfig() const {
  36   if (frame_idx_ >= frame_specs_.size())
  37     return false;
  38
  39   return frame_specs_[frame_idx_].has_config;
  40 }
  41
  42 scoped_refptr<DecoderBufferBase> FrameGeneratorForTest::Generate() {
  43   if (frame_idx_ >= frame_specs_.size())
  44     return scoped_refptr<DecoderBufferBase>();
  45
  46   const FrameSpec& frame_spec = frame_specs_[frame_idx_];
  47   frame_idx_++;
  48
  49   if (frame_spec.is_eos) {
  50     return scoped_refptr<DecoderBufferBase>(
  51         new DecoderBufferAdapter(::media::DecoderBuffer::CreateEOSBuffer()));
  52   }
  53
  54   scoped_refptr< ::media::DecoderBuffer> buffer(
  55       new ::media::DecoderBuffer(frame_spec.size));
  56
  57   // Timestamp.
  58   buffer->set_timestamp(frame_spec.timestamp);
  59
  60   // Generate the frame data.
  61   for (size_t k = 0; k < frame_spec.size; k++) {
  62     buffer->writable_data()[k] = total_buffer_size_ & 0xff;
  63     total_buffer_size_++;
  64   }
  65
  66   // Generate the decrypt configuration.
  67   if (frame_spec.has_decrypt_config) {
  68     uint32 frame_size = buffer->data_size();
  69     uint32 chunk_size = 1;
  70     std::vector< ::media::SubsampleEntry> subsamples;
  71     while (frame_size > 0) {
  72       ::media::SubsampleEntry subsample;
  73       subsample.clear_bytes = chunk_size;
  74       if (subsample.clear_bytes > frame_size)
  75         subsample.clear_bytes = frame_size;
  76       frame_size -= subsample.clear_bytes;
  77       chunk_size <<= 1;
  78
  79       subsample.cypher_bytes = chunk_size;
  80       if (subsample.cypher_bytes > frame_size)
  81         subsample.cypher_bytes = frame_size;
  82       frame_size -= subsample.cypher_bytes;
  83       chunk_size <<= 1;
  84
  85       subsamples.push_back(subsample);
  86     }
  87
  88     char key_id[] = {
  89       0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
  90       0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf };
  91
  92     char iv[] = {
  93       0x0, 0x2, 0x1, 0x3, 0x5, 0x4, 0x7, 0x6,
  94       0x9, 0x8, 0xb, 0xa, 0xd, 0xc, 0xf, 0xe };
  95
  96     scoped_ptr< ::media::DecryptConfig> decrypt_config(
  97         new ::media::DecryptConfig(
  98             std::string(key_id, arraysize(key_id)),
  99             std::string(iv, arraysize(iv)),
 100             subsamples));
 101     buffer->set_decrypt_config(decrypt_config.Pass());
 102   }
 103
 104   return scoped_refptr<DecoderBufferBase>(new DecoderBufferAdapter(buffer));
 105 }
 106
 107 size_t FrameGeneratorForTest::RemainingFrameCount() const {
 108   size_t count = frame_specs_.size() - frame_idx_;
 109   return count;
 110 }
 111
 112 }  // namespace media
 113 }  // namespace chromecast