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-rw-r--r--dom/media/mediasource/SourceBufferResource.cpp144
1 files changed, 144 insertions, 0 deletions
diff --git a/dom/media/mediasource/SourceBufferResource.cpp b/dom/media/mediasource/SourceBufferResource.cpp
new file mode 100644
index 0000000000..49447be015
--- /dev/null
+++ b/dom/media/mediasource/SourceBufferResource.cpp
@@ -0,0 +1,144 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "SourceBufferResource.h"
+
+#include "mozilla/Logging.h"
+#include "mozilla/TaskQueue.h"
+#include "MediaData.h"
+
+mozilla::LogModule* GetSourceBufferResourceLog() {
+ static mozilla::LazyLogModule sLogModule("SourceBufferResource");
+ return sLogModule;
+}
+
+#define SBR_DEBUG(arg, ...) \
+ DDMOZ_LOG(GetSourceBufferResourceLog(), mozilla::LogLevel::Debug, \
+ "::%s: " arg, __func__, ##__VA_ARGS__)
+#define SBR_DEBUGV(arg, ...) \
+ DDMOZ_LOG(GetSourceBufferResourceLog(), mozilla::LogLevel::Verbose, \
+ "::%s: " arg, __func__, ##__VA_ARGS__)
+
+namespace mozilla {
+
+RefPtr<GenericPromise> SourceBufferResource::Close() {
+ MOZ_ASSERT(OnThread());
+ SBR_DEBUG("Close");
+ mClosed = true;
+ return GenericPromise::CreateAndResolve(true, __func__);
+}
+
+nsresult SourceBufferResource::ReadAt(int64_t aOffset, char* aBuffer,
+ uint32_t aCount, uint32_t* aBytes) {
+ SBR_DEBUG("ReadAt(aOffset=%" PRId64 ", aBuffer=%p, aCount=%u, aBytes=%p)",
+ aOffset, aBytes, aCount, aBytes);
+ return ReadAtInternal(aOffset, aBuffer, aCount, aBytes);
+}
+
+nsresult SourceBufferResource::ReadAtInternal(int64_t aOffset, char* aBuffer,
+ uint32_t aCount,
+ uint32_t* aBytes) {
+ MOZ_ASSERT(OnThread());
+
+ if (mClosed || aOffset < 0 || uint64_t(aOffset) < mInputBuffer.GetOffset() ||
+ aOffset > GetLength()) {
+ return NS_ERROR_FAILURE;
+ }
+
+ uint32_t available = GetLength() - aOffset;
+ uint32_t count = std::min(aCount, available);
+
+ SBR_DEBUGV("offset=%" PRId64 " GetLength()=%" PRId64
+ " available=%u count=%u mEnded=%d",
+ aOffset, GetLength(), available, count, mEnded);
+ if (available == 0) {
+ SBR_DEBUGV("reached EOF");
+ *aBytes = 0;
+ return NS_OK;
+ }
+
+ mInputBuffer.CopyData(aOffset, count, aBuffer);
+ *aBytes = count;
+
+ return NS_OK;
+}
+
+nsresult SourceBufferResource::ReadFromCache(char* aBuffer, int64_t aOffset,
+ uint32_t aCount) {
+ SBR_DEBUG("ReadFromCache(aBuffer=%p, aOffset=%" PRId64 ", aCount=%u)",
+ aBuffer, aOffset, aCount);
+ uint32_t bytesRead;
+ nsresult rv = ReadAtInternal(aOffset, aBuffer, aCount, &bytesRead);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // ReadFromCache return failure if not all the data is cached.
+ return bytesRead == aCount ? NS_OK : NS_ERROR_FAILURE;
+}
+
+uint32_t SourceBufferResource::EvictData(uint64_t aPlaybackOffset,
+ int64_t aThreshold) {
+ MOZ_ASSERT(OnThread());
+ SBR_DEBUG("EvictData(aPlaybackOffset=%" PRIu64
+ ","
+ "aThreshold=%" PRId64 ")",
+ aPlaybackOffset, aThreshold);
+ uint32_t result = mInputBuffer.Evict(aPlaybackOffset, aThreshold);
+ return result;
+}
+
+void SourceBufferResource::EvictBefore(uint64_t aOffset) {
+ MOZ_ASSERT(OnThread());
+ SBR_DEBUG("EvictBefore(aOffset=%" PRIu64 ")", aOffset);
+
+ mInputBuffer.EvictBefore(aOffset);
+}
+
+uint32_t SourceBufferResource::EvictAll() {
+ MOZ_ASSERT(OnThread());
+ SBR_DEBUG("EvictAll()");
+ return mInputBuffer.EvictAll();
+}
+
+void SourceBufferResource::AppendData(MediaByteBuffer* aData) {
+ AppendData(MediaSpan(aData));
+}
+
+void SourceBufferResource::AppendData(const MediaSpan& aData) {
+ MOZ_ASSERT(OnThread());
+ SBR_DEBUG("AppendData(aData=%p, aLength=%zu)", aData.Elements(),
+ aData.Length());
+ mInputBuffer.AppendItem(aData);
+ mEnded = false;
+}
+
+void SourceBufferResource::Ended() {
+ MOZ_ASSERT(OnThread());
+ SBR_DEBUG("");
+ mEnded = true;
+}
+
+SourceBufferResource::~SourceBufferResource() { SBR_DEBUG(""); }
+
+SourceBufferResource::SourceBufferResource()
+#if defined(DEBUG)
+ : mThread(AbstractThread::GetCurrent())
+#endif
+{
+ SBR_DEBUG("");
+}
+
+#if defined(DEBUG)
+const AbstractThread* SourceBufferResource::GetThread() const {
+ return mThread;
+}
+bool SourceBufferResource::OnThread() const {
+ return !GetThread() || GetThread()->IsCurrentThreadIn();
+}
+#endif
+
+#undef SBR_DEBUG
+#undef SBR_DEBUGV
+} // namespace mozilla