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// Copyright (c) 2011 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.
// Contains limit definition constants for the media subsystem.
#ifndef MEDIA_BASE_LIMITS_H_
#define MEDIA_BASE_LIMITS_H_
#include "base/basictypes.h"
namespace media {
struct Limits {
// For video.
static const int kMaxDimension = (1 << 15) - 1; // 32767
static const int kMaxCanvas = (1 << (14 * 2)); // 16384 x 16384
// Total number of video frames which are populating in the pipeline.
static const size_t kMaxVideoFrames = 4;
// Following limits are used by AudioParameters::IsValid().
// The 192 Khz constant is the frequency of quicktime lossless audio codec.
// MP4 is limited to 96 Khz, and mp3 is limited to 48 Khz.
// OGG vorbis was initially limited to 96 Khz, but recent tools are unlimited.
// 192 Khz is also the limit on most PC audio hardware.
static const int kMaxSampleRate = 192000;
static const int kMaxChannels = 32;
static const int kMaxBitsPerSample = 64;
static const int kMaxSamplesPerPacket = kMaxSampleRate;
// Maximum possible time.
static const int64 kMaxTimeInMicroseconds = kint64max;
};
} // namespace media
#endif // MEDIA_BASE_LIMITS_H_
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