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804b8b8883
# skip-blame Differential Revision: https://phabricator.services.mozilla.com/D12251 --HG-- extra : moz-landing-system : lando
141 lines
4.3 KiB
C++
141 lines
4.3 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "SourceBufferResource.h"
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#include "mozilla/Logging.h"
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#include "mozilla/TaskQueue.h"
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#include "MediaData.h"
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mozilla::LogModule* GetSourceBufferResourceLog() {
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static mozilla::LazyLogModule sLogModule("SourceBufferResource");
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return sLogModule;
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}
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#define SBR_DEBUG(arg, ...) \
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DDMOZ_LOG(GetSourceBufferResourceLog(), mozilla::LogLevel::Debug, \
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"::%s: " arg, __func__, ##__VA_ARGS__)
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#define SBR_DEBUGV(arg, ...) \
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DDMOZ_LOG(GetSourceBufferResourceLog(), mozilla::LogLevel::Verbose, \
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"::%s: " arg, __func__, ##__VA_ARGS__)
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namespace mozilla {
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nsresult SourceBufferResource::Close() {
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MOZ_ASSERT(OnThread());
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SBR_DEBUG("Close");
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mClosed = true;
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return NS_OK;
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}
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nsresult SourceBufferResource::ReadAt(int64_t aOffset, char* aBuffer,
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uint32_t aCount, uint32_t* aBytes) {
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SBR_DEBUG("ReadAt(aOffset=%" PRId64 ", aBuffer=%p, aCount=%u, aBytes=%p)",
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aOffset, aBytes, aCount, aBytes);
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return ReadAtInternal(aOffset, aBuffer, aCount, aBytes);
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}
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nsresult SourceBufferResource::ReadAtInternal(int64_t aOffset, char* aBuffer,
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uint32_t aCount,
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uint32_t* aBytes) {
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MOZ_ASSERT(OnThread());
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if (mClosed || aOffset < 0 || uint64_t(aOffset) < mInputBuffer.GetOffset() ||
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aOffset > GetLength()) {
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return NS_ERROR_FAILURE;
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}
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uint32_t available = GetLength() - aOffset;
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uint32_t count = std::min(aCount, available);
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SBR_DEBUGV("offset=%" PRId64 " GetLength()=%" PRId64
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" available=%u count=%u mEnded=%d",
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aOffset, GetLength(), available, count, mEnded);
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if (available == 0) {
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SBR_DEBUGV("reached EOF");
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*aBytes = 0;
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return NS_OK;
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}
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mInputBuffer.CopyData(aOffset, count, aBuffer);
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*aBytes = count;
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return NS_OK;
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}
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nsresult SourceBufferResource::ReadFromCache(char* aBuffer, int64_t aOffset,
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uint32_t aCount) {
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SBR_DEBUG("ReadFromCache(aBuffer=%p, aOffset=%" PRId64 ", aCount=%u)",
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aBuffer, aOffset, aCount);
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uint32_t bytesRead;
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nsresult rv = ReadAtInternal(aOffset, aBuffer, aCount, &bytesRead);
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NS_ENSURE_SUCCESS(rv, rv);
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// ReadFromCache return failure if not all the data is cached.
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return bytesRead == aCount ? NS_OK : NS_ERROR_FAILURE;
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}
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uint32_t SourceBufferResource::EvictData(uint64_t aPlaybackOffset,
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int64_t aThreshold, ErrorResult& aRv) {
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MOZ_ASSERT(OnThread());
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SBR_DEBUG("EvictData(aPlaybackOffset=%" PRIu64
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","
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"aThreshold=%" PRId64 ")",
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aPlaybackOffset, aThreshold);
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uint32_t result = mInputBuffer.Evict(aPlaybackOffset, aThreshold, aRv);
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return result;
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}
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void SourceBufferResource::EvictBefore(uint64_t aOffset, ErrorResult& aRv) {
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MOZ_ASSERT(OnThread());
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SBR_DEBUG("EvictBefore(aOffset=%" PRIu64 ")", aOffset);
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mInputBuffer.EvictBefore(aOffset, aRv);
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}
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uint32_t SourceBufferResource::EvictAll() {
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MOZ_ASSERT(OnThread());
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SBR_DEBUG("EvictAll()");
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return mInputBuffer.EvictAll();
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}
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void SourceBufferResource::AppendData(MediaByteBuffer* aData) {
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MOZ_ASSERT(OnThread());
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SBR_DEBUG("AppendData(aData=%p, aLength=%zu)", aData->Elements(),
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aData->Length());
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mInputBuffer.AppendItem(aData);
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mEnded = false;
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}
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void SourceBufferResource::Ended() {
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MOZ_ASSERT(OnThread());
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SBR_DEBUG("");
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mEnded = true;
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}
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SourceBufferResource::~SourceBufferResource() { SBR_DEBUG(""); }
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SourceBufferResource::SourceBufferResource()
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#if defined(DEBUG)
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: mThread(AbstractThread::GetCurrent())
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#endif
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{
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SBR_DEBUG("");
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}
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#if defined(DEBUG)
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const AbstractThread* SourceBufferResource::GetThread() const {
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return mThread;
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}
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bool SourceBufferResource::OnThread() const {
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return !GetThread() || GetThread()->IsCurrentThreadIn();
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}
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#endif
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#undef SBR_DEBUG
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#undef SBR_DEBUGV
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} // namespace mozilla
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