media: Delete renderer/demuxer splicing code.

media/base/stream_parser_buffer.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/base/stream_parser_buffer.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "media/base/timestamp_constants.h"
 
 namespace media {
 
-static scoped_refptr<StreamParserBuffer> CopyBuffer(
-    const StreamParserBuffer& buffer) {
-  if (buffer.end_of_stream())
-    return StreamParserBuffer::CreateEOSBuffer();
-
-  scoped_refptr<StreamParserBuffer> copied_buffer =
-      StreamParserBuffer::CopyFrom(buffer.data(),
-                                   buffer.data_size(),
-                                   buffer.side_data(),
-                                   buffer.side_data_size(),
-                                   buffer.is_key_frame(),
-                                   buffer.type(),
-                                   buffer.track_id());
-  copied_buffer->SetDecodeTimestamp(buffer.GetDecodeTimestamp());
-  copied_buffer->SetConfigId(buffer.GetConfigId());
-  copied_buffer->set_timestamp(buffer.timestamp());
-  copied_buffer->set_duration(buffer.duration());
-  copied_buffer->set_is_duration_estimated(buffer.is_duration_estimated());
-  copied_buffer->set_discard_padding(buffer.discard_padding());
-  copied_buffer->set_splice_timestamp(buffer.splice_timestamp());
-  const DecryptConfig* decrypt_config = buffer.decrypt_config();
-  if (decrypt_config) {
-    copied_buffer->set_decrypt_config(base::MakeUnique<DecryptConfig>(
-        decrypt_config->key_id(), decrypt_config->iv(),
-        decrypt_config->subsamples()));
-  }
-
-  return copied_buffer;
-}
-
 scoped_refptr<StreamParserBuffer> StreamParserBuffer::CreateEOSBuffer() {
   return make_scoped_refptr(new StreamParserBuffer(NULL, 0, NULL, 0, false,
                                                    DemuxerStream::UNKNOWN, 0));
 }
 
 scoped_refptr<StreamParserBuffer> StreamParserBuffer::CopyFrom(
     const uint8_t* data,
     int data_size,
     bool is_key_frame,
     Type type,
@@ skipping 57 matching lines @@
 int StreamParserBuffer::GetConfigId() const {
   return config_id_;
 }
 
 void StreamParserBuffer::SetConfigId(int config_id) {
   config_id_ = config_id;
   if (preroll_buffer_.get())
     preroll_buffer_->SetConfigId(config_id);
 }
 
-int StreamParserBuffer::GetSpliceBufferConfigId(size_t index) const {
-  return index < splice_buffers().size()
-      ? splice_buffers_[index]->GetConfigId()
-      : GetConfigId();
-}
-
 const char* StreamParserBuffer::GetTypeName() const {
   switch (type()) {
     case DemuxerStream::AUDIO:
       return "audio";
     case DemuxerStream::VIDEO:
       return "video";
     case DemuxerStream::TEXT:
       return "text";
     case DemuxerStream::UNKNOWN:
       return "unknown";
   }
   NOTREACHED();
   return "";
 }
 
-void StreamParserBuffer::ConvertToSpliceBuffer(
-    const BufferQueue& pre_splice_buffers) {
-  DCHECK(splice_buffers_.empty());
-  DCHECK(duration() > base::TimeDelta())
-      << "Only buffers with a valid duration can convert to a splice buffer."
-      << " pts " << timestamp().InSecondsF()
-      << " dts " << GetDecodeTimestamp().InSecondsF()
-      << " dur " << duration().InSecondsF();
-  DCHECK(!end_of_stream());
-
-  // Splicing requires non-estimated sample accurate durations to be confident
-  // things will sound smooth. Also, we cannot be certain whether estimated
-  // overlap is really a splice scenario, or just over estimation.
-  DCHECK(!is_duration_estimated_);
-
-  // Make a copy of this first, before making any changes.
-  scoped_refptr<StreamParserBuffer> overlapping_buffer = CopyBuffer(*this);
-  overlapping_buffer->set_splice_timestamp(kNoTimestamp);
-
-  const scoped_refptr<StreamParserBuffer>& first_splice_buffer =
-      pre_splice_buffers.front();
-
-  // Ensure the given buffers are actually before the splice point.
-  DCHECK(first_splice_buffer->timestamp() <= overlapping_buffer->timestamp());
-
-  // TODO(dalecurtis): We should also clear |data| and |side_data|, but since
-  // that implies EOS care must be taken to ensure there are no clients relying
-  // on that behavior.
-
-  // Move over any preroll from this buffer.
-  if (preroll_buffer_.get()) {
-    DCHECK(!overlapping_buffer->preroll_buffer_.get());
-    overlapping_buffer->preroll_buffer_.swap(preroll_buffer_);
-  }
-
-  // Rewrite |this| buffer as a splice buffer.
-  SetDecodeTimestamp(first_splice_buffer->GetDecodeTimestamp());
-  SetConfigId(first_splice_buffer->GetConfigId());
-  set_timestamp(first_splice_buffer->timestamp());
-  set_is_key_frame(first_splice_buffer->is_key_frame());
-  type_ = first_splice_buffer->type();
-  track_id_ = first_splice_buffer->track_id();
-  set_splice_timestamp(overlapping_buffer->timestamp());
-
-  // The splice duration is the duration of all buffers before the splice plus
-  // the highest ending timestamp after the splice point.
-  DCHECK(overlapping_buffer->duration() > base::TimeDelta());
-  DCHECK(pre_splice_buffers.back()->duration() > base::TimeDelta());
-  set_duration(
-      std::max(overlapping_buffer->timestamp() + overlapping_buffer->duration(),
-               pre_splice_buffers.back()->timestamp() +
-                   pre_splice_buffers.back()->duration()) -
-      first_splice_buffer->timestamp());
-
-  // Copy all pre splice buffers into our wrapper buffer.
-  for (BufferQueue::const_iterator it = pre_splice_buffers.begin();
-       it != pre_splice_buffers.end();
-       ++it) {
-    const scoped_refptr<StreamParserBuffer>& buffer = *it;
-    DCHECK(!buffer->end_of_stream());
-    DCHECK(!buffer->preroll_buffer().get());
-    DCHECK(buffer->splice_buffers().empty());
-    DCHECK(!buffer->is_duration_estimated());
-    splice_buffers_.push_back(CopyBuffer(*buffer.get()));
-    splice_buffers_.back()->set_splice_timestamp(splice_timestamp());
-  }
-
-  splice_buffers_.push_back(overlapping_buffer);
-}
-
 void StreamParserBuffer::SetPrerollBuffer(
     const scoped_refptr<StreamParserBuffer>& preroll_buffer) {
   DCHECK(!preroll_buffer_.get());
   DCHECK(!end_of_stream());
   DCHECK(!preroll_buffer->end_of_stream());
   DCHECK(!preroll_buffer->preroll_buffer_.get());
-  DCHECK(preroll_buffer->splice_timestamp() == kNoTimestamp);
-  DCHECK(preroll_buffer->splice_buffers().empty());
   DCHECK(preroll_buffer->timestamp() <= timestamp());
   DCHECK(preroll_buffer->discard_padding() == DecoderBuffer::DiscardPadding());
   DCHECK_EQ(preroll_buffer->type(), type());
   DCHECK_EQ(preroll_buffer->track_id(), track_id());
 
   preroll_buffer_ = preroll_buffer;
   preroll_buffer_->set_timestamp(timestamp());
+  preroll_buffer_->SetConfigId(GetConfigId());

[chcunningham, 2016/11/11 00:50:50]

This seemed to be missing. Probably not critical.

   preroll_buffer_->SetDecodeTimestamp(GetDecodeTimestamp());
 
   // Mark the entire buffer for discard.
   preroll_buffer_->set_discard_padding(
       std::make_pair(kInfiniteDuration, base::TimeDelta()));
 }
 
 void StreamParserBuffer::set_timestamp(base::TimeDelta timestamp) {
   DecoderBuffer::set_timestamp(timestamp);
   if (preroll_buffer_.get())
     preroll_buffer_->set_timestamp(timestamp);
 }
 
 }  // namespace media