| // Copyright 2015 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. |
| |
| #ifndef CHROMECAST_PUBLIC_AVSETTINGS_H_ |
| #define CHROMECAST_PUBLIC_AVSETTINGS_H_ |
| |
| #include <stdint.h> |
| |
| #include <string> |
| #include <vector> |
| |
| #include "chromecast_export.h" |
| #include "output_restrictions.h" |
| #include "task_runner.h" |
| |
| namespace chromecast { |
| |
| // Pure abstract interface to get and set media-related information. Each |
| // platform must provide its own implementation. |
| // All functions except constructor and destructor are called in one thread. |
| // All delegate functions can be called by platform implementation on any |
| // threads, for example, created by platform implementation internally. |
| class AvSettings { |
| public: |
| // Defines whether or not the cast receiver is the current active source of |
| // the screen. If the device is connected to HDMI sinks, it may be unknown. |
| // GENERATED_JAVA_ENUM_PACKAGE: com.google.android.apps.mediashell.avsettings |
| enum ActiveState { |
| UNKNOWN, |
| STANDBY, // Screen is off |
| INACTIVE, // Screen is on, but cast receiver is not active |
| ACTIVE, // Screen is on and cast receiver is active |
| }; |
| |
| // Audio codec supported by the device (or HDMI sink). |
| // GENERATED_JAVA_ENUM_PACKAGE: com.google.android.apps.mediashell.avsettings |
| enum AudioCodec { |
| AC3 = 1 << 0, |
| DTS = 1 << 1, |
| DTS_HD = 1 << 2, |
| EAC3 = 1 << 3, |
| LPCM = 1 << 4, |
| MPEG_H_AUDIO = 1 << 5, |
| |
| // All known audio codecs. |
| ALL = AC3 | DTS | DTS_HD | EAC3 | LPCM | MPEG_H_AUDIO |
| }; |
| |
| // Defines the type of audio volume control of the device. |
| // GENERATED_JAVA_ENUM_PACKAGE: com.google.android.apps.mediashell.avsettings |
| enum AudioVolumeControlType { |
| UNKNOWN_VOLUME, |
| |
| // MASTER_VOLUME: Devices of CEC audio controls is a master volume system, |
| // i.e the system volume is changed, but not attenuated, |
| // e.g. normal TVs, audio devices. |
| MASTER_VOLUME, |
| |
| // ATTENUATION_VOLUME: Devices which do not do CEC audio controls, |
| // e.g. Chromecast. |
| ATTENUATION_VOLUME, |
| |
| // FIXED_VOLUME: Devices which have fixed volume, e.g. Nexus Player. |
| FIXED_VOLUME, |
| }; |
| |
| // Defines the status of platform wake-on-cast feature. |
| enum WakeOnCastStatus { |
| WAKE_ON_CAST_UNKNOWN, // Should only been used very rarely when platform |
| // has error to get the status. |
| WAKE_ON_CAST_NOT_SUPPORTED, // Platform doesn't support wake-on-cast. |
| WAKE_ON_CAST_DISABLED, |
| WAKE_ON_CAST_ENABLED, |
| }; |
| |
| // GENERATED_JAVA_ENUM_PACKAGE: com.google.android.apps.mediashell.avsettings |
| enum Event { |
| // This event shall be fired whenever the active state is changed including |
| // when the screen turned on, when the cast receiver (or the device where |
| // cast receiver is running on) became the active input source, or after a |
| // call to TurnActive() or TurnStandby(). |
| // WakeSystem() may change the active state depending on implementation. |
| // On this event, GetActiveState() will be called on the thread where |
| // Initialize() was called. |
| ACTIVE_STATE_CHANGED = 0, |
| |
| // This event shall be fired whenever the audio codecs supported by the |
| // device (or HDMI sinks connected to the device) are changed. |
| // On this event, GetAudioCodecsSupported() and GetMaxAudioChannels() will |
| // be called on the thread where Initialize() was called. |
| AUDIO_CODECS_SUPPORTED_CHANGED = 2, |
| |
| // This event shall be fired whenever the screen information of the device |
| // (or HDMI sinks connected to the device) are changed including screen |
| // resolution, HDCP version and supported EOTFs. |
| // On this event, GetScreenResolution(), GetHDCPVersion() and |
| // GetSupportedEotfs(), GetScreenWidthMm(), GetScreenHeightMm() will be |
| // called on the thread where Initialize() was called. |
| SCREEN_INFO_CHANGED = 3, |
| |
| // This event should be fired whenever the active output restrictions on the |
| // device outputs change. On this event, GetOutputRestrictions() will be |
| // called on the thread where Initialize() was called. |
| OUTPUT_RESTRICTIONS_CHANGED = 4, |
| |
| // This event shall be fired whenever the type of volume control provided |
| // by the device is changed, for e.g., when the device is connected or |
| // disconnected to HDMI sinks |
| AUDIO_VOLUME_CONTROL_TYPE_CHANGED = 5, |
| |
| // This event shall be fired whenever wake-on-cast status is changed by |
| // platform. |
| WAKE_ON_CAST_CHANGED = 6, |
| |
| // This event shall be fired whenever the volume step interval provided |
| // by the device is changed, for e.g. when connecting to an AVR setup |
| // where step interval should be 1%. |
| AUDIO_VOLUME_STEP_INTERVAL_CHANGED = 7, |
| |
| // This event shall be fired whenever the HDR output type changes. |
| // On this event, GetHdrOutputType() will be called on the thread where |
| // Initialize() was called. |
| HDR_OUTPUT_TYPE_CHANGED = 8, |
| |
| // This event should be fired when the device is connected to HDMI sinks. |
| HDMI_CONNECTED = 100, |
| |
| // This event should be fired when the device is disconnected to HDMI sinks. |
| HDMI_DISCONNECTED = 101, |
| |
| // This event should be fired when an HDMI error occurs. |
| HDMI_ERROR = 102, |
| |
| // This event should be fired when the display brightness is changed. |
| DISPLAY_BRIGHTNESS_CHANGED = 200, |
| }; |
| |
| // Delegate to inform the caller events. As a subclass of TaskRunner, |
| // AvSettings implementation can post tasks to the thread where Initialize() |
| // was called. |
| class Delegate : public TaskRunner { |
| public: |
| // This may be invoked to posts a task to the thread where Initialize() was |
| // called. |
| bool PostTask(Task* task, uint64_t delay_ms) override = 0; |
| |
| // This must be invoked to fire an event when one of the conditions |
| // described above (Event) happens. |
| virtual void OnMediaEvent(Event event) = 0; |
| |
| // This should be invoked when a key is pressed. |
| // |key_code| is a CEC code defined in User Control Codes table of the CEC |
| // specification (CEC Table 30 in the HDMI 1.4a specification). |
| virtual void OnKeyPressed(int key_code) = 0; |
| |
| // This should be invoked when a key is released. |
| virtual void OnKeyReleased(int key_code) = 0; |
| |
| protected: |
| ~Delegate() override {} |
| }; |
| |
| virtual ~AvSettings() {} |
| |
| // Initializes avsettings and starts delivering events to |delegate|. |
| // |delegate| must not be null. |
| virtual void Initialize(Delegate* delegate) = 0; |
| |
| // Finalizes avsettings. It must assume |delegate| passed to Initialize() is |
| // invalid after this call and stop delivering events. |
| virtual void Finalize() = 0; |
| |
| // Returns current active state. |
| virtual ActiveState GetActiveState() = 0; |
| |
| // Turns the screen on. Sets the active input to the cast receiver iff |
| // switch_to_cast == true. |
| // If successful, it must return true and fire ACTIVE_STATE_CHANGED. |
| virtual bool TurnActive(bool switch_to_cast) = 0; |
| |
| // Turns the screen off (or stand-by). If the device is connecting to HDMI |
| // sinks, broadcasts a CEC standby message on the HDMI control bus to put all |
| // sink devices (TV, AVR) into a standby state. |
| // If successful, it must return true and fire ACTIVE_STATE_CHANGED. |
| virtual bool TurnStandby() = 0; |
| |
| // Requests the system where cast receiver is running on to be kept awake for |
| // |time_ms|. If the system is already being kept awake, the period should be |
| // extended from |time_ms| in the future. |
| // It will be called when cast senders discover the cast receiver while the |
| // system is in a stand-by mode (or a deeper sleeping/dormant mode depending |
| // on the system). To respond to cast senders' requests, cast receiver needs |
| // the system awake for given amount of time. The system should not turn |
| // screen on. |
| // Returns true if successful. |
| virtual bool KeepSystemAwake(int time_ms) = 0; |
| |
| // Sets screen (backlight) brightness. |
| // |brightness|: Range is 0.0 (off) to 1.0 (max). |
| // |smooth|: If true, will gradually change brightness in a ramp. If true and |
| // unsupported, returns false and does nothing. If false, sets brightness |
| // immediately. If another ramp is already in progress, it is cancelled and a |
| // new one is started from the current brightness of the display. |
| // If the implementation rounds to discrete values, it should round up so that |
| // non-0 |brightness| values don't turn off the display. |
| // Returns false if set fails. Returns true otherwise. |
| // Not all displays support this function. |
| static bool SetDisplayBrightness(float brightness, bool smooth) |
| __attribute__((weak)); |
| |
| // Gets the current screen (backlight) brightness. |
| // |brightness|: Range is 0.0 (off) to 1.0 (max). |
| // Returns false and does not modify |brightness| if get fails. |
| // Returns true and sets |brightness| to the current brightness otherwise. |
| // Not all displays support this function. |
| static bool GetDisplayBrightness(float* brightness) __attribute__((weak)); |
| |
| // Gets the nits output by the display at 100% brightness. |
| // |nits|: The maximum brightness in nits. |
| // Returns false and does not modify |nits| if get fails. |
| // Returns true and sets |nits| on success. |
| // Not all displays support this function. |
| static bool GetDisplayMaxBrightnessNits(float* nits) __attribute__((weak)); |
| |
| // Gets the HDMI latency in microseconds. |
| // Returns valid values when HDMI is connected. |
| // Returns 0 when HDMI is not connected or when the latency cannot be |
| // measured. |
| // This function should only be implemented on HDMI platforms. |
| static int GetHdmiLatencyUs() __attribute__((weak)); |
| |
| // Returns the type of volume control, i.e. MASTER_VOLUME, FIXED_VOLUME or |
| // ATTENUATION_VOLUME. For example, normal TVs, devices of CEC audio |
| // controls, and audio devices are master volume systems. The counter |
| // examples are Chromecast (which doesn't do CEC audio controls) and |
| // Nexus Player which is fixed volume. |
| virtual AudioVolumeControlType GetAudioVolumeControlType() = 0; |
| |
| // Retrieves the volume step interval in range [0.0, 1.0] that specifies how |
| // much volume to change per step, e.g. 0.05 = 5%. Returns true if a valid |
| // interval is specified by platform; returns false if interval should defer |
| // to default values. |
| // |
| // Current default volume step intervals per control type are as follows: |
| // - MASTER_VOLUME: 0.05 (5%) |
| // - ATTENUATION_VOLUME: 0.02 (2%) |
| // - FIXED_VOLUME: 0.01 (1%) |
| // - UNKNOWN_VOLUME: 0.01 (1%) |
| virtual bool GetAudioVolumeStepInterval(float* step_inteval) = 0; |
| |
| // Gets audio codecs supported by the device (or HDMI sinks). |
| // The result is an integer of OR'ed AudioCodec values. |
| virtual int GetAudioCodecsSupported() = 0; |
| |
| // Gets maximum number of channels for given audio codec, |codec|. |
| virtual int GetMaxAudioChannels(AudioCodec codec) = 0; |
| |
| // Retrieves the resolution of screen of the device (or HDMI sinks). |
| // Returns true if it gets resolution successfully. |
| virtual bool GetScreenResolution(int* width, int* height) = 0; |
| |
| // Retrieves the refresh rate of screen of the device (or HDMI sinks) in |
| // millihertz. |
| // Returns true if it gets refresh rate successfully. |
| // TODO(jiaqih): Update to virtual function in next API update. |
| static CHROMECAST_EXPORT bool GetRefreshRateMillihertz(int* refresh_rate) |
| __attribute__((weak)); |
| |
| // Returns the current HDCP version multiplied by ten (so, for example, for |
| // HDCP 2.2 the return value is 22). The return value should by 0 if HDCP is |
| // not supported. Or TV_PLATFORM_NO_HDCP for platforms like CastTV that |
| // support equivalent content protection without HDCP. |
| enum { TV_PLATFORM_NO_HDCP = 99 }; |
| virtual int GetHDCPVersion() = 0; |
| |
| // Supported Electro-Optical Transfer Function (EOTF) reported by the device. |
| // The values are according to Table 8 in CTA-861.3 (formerly CEA-861.3). |
| // GENERATED_JAVA_ENUM_PACKAGE: com.google.android.apps.mediashell.avsettings |
| enum Eotf { |
| EOTF_SDR = 1 << 0, |
| EOTF_HDR = 1 << 1, |
| EOTF_SMPTE_ST_2084 = 1 << 2, |
| EOTF_HLG = 1 << 3, |
| }; |
| |
| // Returns a set of flags, defined in the Eotf enum above, indicating support |
| // of different EOTFs by the device or HDMI sink. |
| virtual int GetSupportedEotfs() = 0; |
| |
| enum DolbyVisionCapFlags { |
| DOLBY_SUPPORTED = 1 << 0, |
| DOLBY_4K_P60_SUPPORTED = 1 << 1, |
| DOLBY_422_12BIT_SUPPORTED = 1 << 2, |
| }; |
| |
| // Returns a set of flags, defined in the DolbyVisionCapFlags enum above, |
| // indicating support for DolbyVision and various DV-related features. |
| virtual int GetDolbyVisionFlags() = 0; |
| |
| // Returns physical screen size in millimeters. |
| virtual int GetScreenWidthMm() = 0; |
| virtual int GetScreenHeightMm() = 0; |
| |
| // If supported, retrieves the restrictions active on the device outputs (as |
| // specified by the PlayReady CDM; see output_restrictions.h). If reporting |
| // output restrictions is unsupported, should return false. |
| virtual bool GetOutputRestrictions( |
| OutputRestrictions* output_restrictions) = 0; |
| |
| // If supported, sets which output restrictions should be active on the device |
| // (as specified by the PlayReady CDM; see output_restrictions.h). The device |
| // should try to apply these restrictions and fire OUTPUT_RESTRICTIONS_CHANGED |
| // if they result in a change of active restrictions. |
| virtual void ApplyOutputRestrictions( |
| const OutputRestrictions& restrictions) = 0; |
| |
| // Returns current Wake-On-Cast status from platform. |
| virtual WakeOnCastStatus GetWakeOnCastStatus() = 0; |
| |
| // Enables/Disables Wake-On-Cast status. |
| // Returns false if failed or not supported. |
| virtual bool EnableWakeOnCast(bool enabled) = 0; |
| |
| // Supported HDR output modes. |
| // GENERATED_JAVA_ENUM_PACKAGE: com.google.android.apps.mediashell.avsettings |
| enum HdrOutputType { |
| HDR_OUTPUT_SDR, // not HDR |
| HDR_OUTPUT_HDR, // HDR with static metadata |
| HDR_OUTPUT_DOLBYVISION // DolbyVision output |
| }; |
| |
| // Gets the current HDR output type. |
| virtual HdrOutputType GetHdrOutputType() = 0; |
| |
| // Sets the HDMI video mode according to the given parameters: |
| // |allow_4k|: if false, the resolution set will not be a 4K resolution. |
| // |optimize_for_fps|: *Attempts* to pick a refresh rate optimal for the |
| // given content frame rate. |optimize_for_fps| is expressed as framerate |
| // * 100. I.e. 24hz -> 2400, 23.98hz -> 2398, etc. Values <= 0 are ignored. |
| // |output_type|: if set to HDR_OUTPUT_DOLBYVISION, the video mode set will |
| // be a DV supported resolution. If set to HDR_OUTPUT_HDR, the video mode set |
| // will be a 10-bit or greater video mode. |
| // |
| // Returns: |
| // - true if HDMI video mode change is beginning. Caller should wait for |
| // SCREEN_INFO_CHANGED event for mode change to complete. |
| // - false if no HDMI video mode change has begun. This could be because |
| // HDMI is disconnected, or the current resolution is already good for the |
| // given parameters, or no valid resolution with the given parameters is |
| // found (ie. setting require_dolby_vision/require_hdr to true when the |
| // sink doesn't support those features). |
| // |
| // Non-HDMI devices should return false. |
| virtual bool SetHdmiVideoMode(bool allow_4k, |
| int optimize_for_fps, |
| HdrOutputType output_type) = 0; |
| |
| // Returns true if the HDMI sink supports the specified HDR output type in |
| // the current HDMI mode. Returns false otherwise. |
| // |
| // Non-HDMI devices should return false. |
| virtual bool IsHdrOutputSupportedByCurrentHdmiVideoMode( |
| HdrOutputType output_type) = 0; |
| }; |
| |
| // Entrypoint for overridable AvSettings shared library. |
| class CHROMECAST_EXPORT AvSettingsShlib { |
| public: |
| static AvSettings* Create(const std::vector<std::string>& argv); |
| }; |
| |
| } // namespace chromecast |
| |
| #endif // CHROMECAST_PUBLIC_AVSETTINGS_H_ |