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(
  28     ChunkDemuxer* demuxer, LogCB log_cb)
  29     : demuxer_(demuxer),
  30       log_cb_(log_cb) {
  31   DCHECK(demuxer_);
  32 }
  33
  34 WebMediaSourceImpl::~WebMediaSourceImpl() {}
  35
  36 WebMediaSource::AddStatus WebMediaSourceImpl::addSourceBuffer(
  37     const blink::WebString& type,
  38     const blink::WebVector<blink::WebString>& codecs,
  39     blink::WebSourceBuffer** source_buffer) {
  40   std::string id = base::GenerateGUID();
  41   std::vector<std::string> new_codecs(codecs.size());
  42   for (size_t i = 0; i < codecs.size(); ++i)
  43     new_codecs[i] = codecs[i].utf8().data();
  44
  45   WebMediaSource::AddStatus result =
  46       static_cast<WebMediaSource::AddStatus>(
  47           demuxer_->AddId(id, type.utf8().data(), new_codecs));
  48
  49   if (result == WebMediaSource::AddStatusOk)
  50     *source_buffer = new WebSourceBufferImpl(id, demuxer_);
  51
  52   return result;
  53 }
  54
  55 double WebMediaSourceImpl::duration() {
  56   return demuxer_->GetDuration();
  57 }
  58
  59 void WebMediaSourceImpl::setDuration(double new_duration) {
  60   DCHECK_GE(new_duration, 0);
  61   demuxer_->SetDuration(new_duration);
  62 }
  63
  64 void WebMediaSourceImpl::markEndOfStream(
  65     WebMediaSource::EndOfStreamStatus status) {
  66   PipelineStatus pipeline_status = PIPELINE_OK;
  67
  68   switch (status) {
  69     case WebMediaSource::EndOfStreamStatusNoError:
  70       break;
  71     case WebMediaSource::EndOfStreamStatusNetworkError:
  72       pipeline_status = PIPELINE_ERROR_NETWORK;
  73       break;
  74     case WebMediaSource::EndOfStreamStatusDecodeError:
  75       pipeline_status = PIPELINE_ERROR_DECODE;
  76       break;
  77   }
  78
  79   demuxer_->MarkEndOfStream(pipeline_status);
  80 }
  81
  82 void WebMediaSourceImpl::unmarkEndOfStream() {
  83   demuxer_->UnmarkEndOfStream();
  84 }
  85
  86 }  // namespace media