media/blink/webmediasource_impl.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/blink/webmediasource_impl.h"
   6
   7 #include "base/guid.h"
   8 #include "media/blink/websourcebuffer_impl.h"
   9 #include "media/filters/chunk_demuxer.h"
  10 #include "third_party/WebKit/public/platform/WebCString.h"
  11 #include "third_party/WebKit/public/platform/WebString.h"
  12
  13 using ::blink::WebString;
  14 using ::blink::WebMediaSource;
  15
  16 namespace media {
  17
  18 #define STATIC_ASSERT_MATCHING_STATUS_ENUM(webkit_name, chromium_name) \
  19   static_assert(static_cast<int>(WebMediaSource::webkit_name) == \
  20                 static_cast<int>(ChunkDemuxer::chromium_name),  \
  21                 "mismatching status enum values: " #webkit_name)
  22 STATIC_ASSERT_MATCHING_STATUS_ENUM(AddStatusOk, kOk);
  23 STATIC_ASSERT_MATCHING_STATUS_ENUM(AddStatusNotSupported, kNotSupported);
  24 STATIC_ASSERT_MATCHING_STATUS_ENUM(AddStatusReachedIdLimit, kReachedIdLimit);
  25 #undef STATIC_ASSERT_MATCHING_STATUS_ENUM
  26
  27 WebMediaSourceImpl::WebMediaSourceImpl(ChunkDemuxer* demuxer,
  28                                        const scoped_refptr<MediaLog>& media_log)
  29     : demuxer_(demuxer), media_log_(media_log) {
  30   DCHECK(demuxer_);
  31 }
  32
  33 WebMediaSourceImpl::~WebMediaSourceImpl() {}
  34
  35 WebMediaSource::AddStatus WebMediaSourceImpl::addSourceBuffer(
  36     const blink::WebString& type,
  37     const blink::WebVector<blink::WebString>& codecs,
  38     blink::WebSourceBuffer** source_buffer) {
  39   std::string id = base::GenerateGUID();
  40   std::vector<std::string> new_codecs(codecs.size());
  41   for (size_t i = 0; i < codecs.size(); ++i)
  42     new_codecs[i] = codecs[i].utf8().data();
  43
  44   WebMediaSource::AddStatus result =
  45       static_cast<WebMediaSource::AddStatus>(
  46           demuxer_->AddId(id, type.utf8().data(), new_codecs));
  47
  48   if (result == WebMediaSource::AddStatusOk)
  49     *source_buffer = new WebSourceBufferImpl(id, demuxer_);
  50
  51   return result;
  52 }
  53
  54 double WebMediaSourceImpl::duration() {
  55   return demuxer_->GetDuration();
  56 }
  57
  58 void WebMediaSourceImpl::setDuration(double new_duration) {
  59   DCHECK_GE(new_duration, 0);
  60   demuxer_->SetDuration(new_duration);
  61 }
  62
  63 void WebMediaSourceImpl::markEndOfStream(
  64     WebMediaSource::EndOfStreamStatus status) {
  65   PipelineStatus pipeline_status = PIPELINE_OK;
  66
  67   switch (status) {
  68     case WebMediaSource::EndOfStreamStatusNoError:
  69       break;
  70     case WebMediaSource::EndOfStreamStatusNetworkError:
  71       pipeline_status = PIPELINE_ERROR_NETWORK;
  72       break;
  73     case WebMediaSource::EndOfStreamStatusDecodeError:
  74       pipeline_status = PIPELINE_ERROR_DECODE;
  75       break;
  76   }
  77
  78   demuxer_->MarkEndOfStream(pipeline_status);
  79 }
  80
  81 void WebMediaSourceImpl::unmarkEndOfStream() {
  82   demuxer_->UnmarkEndOfStream();
  83 }
  84
  85 }  // namespace media