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V2TXLivePlayer

Last updated: 2022-10-20 15:57:07

    Overview

    Tencent Cloud’s live stream player
    The player pulls audio/video data from the specified live streaming URL and plays the data after decoding and local rendering.

    Features

    The player has the following capabilities:

    • Playing over protocols including RTMP, HTTP-FLV, TRTC, and WebRTC
    • Taking screenshots of streamed video
    • Delay adjustment. You can set the minimum and maximum cache time for auto adjustment by the player.
    • Custom video processing. You can process live video based on your project requirements before rendering and playback.

    Basic SDK APIs

    setObserver

    This API is used to set the callbacks of the player. After setting, you can listen for callback events of V2TXLivePlayer, including player status, playback volume, first audio/video frame, statistics, and warning and error messages.

    - (void)setObserver:(id<V2TXLivePlayerObserver>)observer

    Parameters

    Parameter Type Description
    observer V2TXLivePlayerObserver Target object for the player’s callbacks. For details, please see V2TXLivePlayerObserver.

    Basic Playback APIs

    setRenderView

    This API is used to set the rendering view to display video.

    - (V2TXLiveCode)setRenderView:(TXView *)view

    Parameters

    Parameter Type Description
    view TXView * The player’s rendering view

    Response

    V2TXLiveCode:
    V2TXLIVE_OK: successful

    startLivePlay

    This API is used to start playing audio/video streams.

    - (V2TXLiveCode)startLivePlay:(NSString *)url
    Note：

    Since v10.7, startPlay has been replaced by startLivePlay, and you need to call V2TXLivePremier#setLicence or TXLiveBase#setLicence to set the license to use the live playback feature (you only need to set the license once). Otherwise, playback will fail (black screen). You can use a live stream publishing license, UGSV license, or video playback license to activate the live playback feature. If you don’t have any of the licenses, you can buy one or apply for a trial license for free.

    Parameters

    Parameter Type Description
    url NSString * Playback URL of audio/video streams, which supports RTMP, HTTP-FLV, TRTC, and WebRTC

    Response

    V2TXLiveCode:

    • V2TXLIVE_OK: successful
    • V2TXLIVE_ERROR_INVALID_PARAMETER: operation failed because the URL is invalid.
    • V2TXLIVE_ERROR_REFUSED: RTC does not support using the same stream ID for publishing and playback on the same device.

    stopPlay

    This API is used to stop playing audio/video streams.

    - (V2TXLiveCode)stopPlay;

    Response

    V2TXLiveCode:
    V2TXLIVE_OK: successful

    isPlaying

    This API is used to get whether the player is playing streams.

    - (int)isPlaying

    Response

    Whether streams are being played

    • 1: yes
    • 0: no

    Video APIs

    setRenderRotation

    This API is used to set the rotation of images displayed by the player.

    - (V2TXLiveCode)setRenderRotation:(V2TXLiveRotation)rotation

    Parameters

    Parameter Type Description
    rotation V2TXLiveRotation The degrees by which images are rotated. Default value: 0.

    Response

    V2TXLiveCode:
    V2TXLIVE_OK: successful

    V2TXLiveRotation enumerated values

    Value Description
    V2TXLiveRotation0 No rotation
    V2TXLiveRotation90 Rotate 90 degrees clockwise
    V2TXLiveRotation180 Rotate 180 degrees clockwise
    V2TXLiveRotation270 Rotate 270 degrees clockwise

    setRenderFillMode

    This API is used to set the image fill mode.

    - (V2TXLiveCode)setRenderFillMode:(V2TXLiveFillMode)mode

    Parameters

    Parameter Type Description
    mode V2TXLiveFillMode The image fill mode. Default value: V2TXLiveFillModeFit.

    Response

    V2TXLiveCode:
    V2TXLIVE_OK: successful

    V2TXLiveFillMode enumerated values

    Value Description
    V2TXLiveFillModeFit The image fits the screen without cropping. If the aspect ratio of the image and the screen do not match, there will be black bars.
    V2TXLiveFillModeFill The image fills the entire screen, without black bars. If the aspect ratio of the image and screen do not match, the parts of the image that don’t fit will be cropped.

    pauseVideo

    This API is used to pause playing video streams.

    - (V2TXLiveCode)pauseVideo

    Response

    V2TXLiveCode:
    V2TXLIVE_OK: successful

    resumeVideo

    This API is used to resume playing video streams.

    - (V2TXLiveCode)resumeVideo

    Response

    V2TXLiveCode:
    V2TXLIVE_OK: successful

    snapshot

    This API is used to take a screenshot of streamed video.

    Note：

    After V2TXLIVE_OK is returned, you can get the screenshot taken in the [V2TXLivePlayerObserver onSnapshotComplete: image:] callback.

    - (V2TXLiveCode)snapshot

    Response

    V2TXLiveCode:

    • V2TXLIVE_OK: successful
    • V2TXLIVE_ERROR_REFUSED: failed to take a screenshot because playback has stopped.

    enableCustomRendering

    This API is used to set custom video rendering.
    You can use this API to obtain each frame of decoded video for custom rendering.

    Note：

    After custom rendering is enabled, you can get video frames in the [V2TXLivePlayerObserver onRenderVideoFrame:frame:] callback.

    - (V2TXLiveCode)enableCustomRendering:(BOOL)enable
                          pixelFormat:(V2TXLivePixelFormat)pixelFormat
                           bufferType:(V2TXLiveBufferType)bufferType

    Parameters

    Parameter Type Description
    enable BOOL Whether to enable custom rendering. Default value: NO.
    pixelFormat V2TXLivePixelFormat Pixel format of the video called back for custom rendering
    bufferType V2TXLiveBufferType Buffer type of the video called back for custom rendering

    Response

    V2TXLiveCode:

    • V2TXLIVE_OK: successful
    • V2TXLIVE_ERROR_NOT_SUPPORTED: unsupported pixel format or data format.

    V2TXLivePixelFormat enumerated values

    Value Description
    V2TXLivePixelFormatUnknown Unknown
    V2TXLivePixelFormatI420 YUV420P (I420)
    V2TXLivePixelFormatNV12 YUV420SP (NV12)
    V2TXLivePixelFormatBGRA32 BGRA8888
    V2TXLivePixelFormatTexture2D OpenGL 2D texture

    V2TXLiveBufferType enumerated values

    Value Description
    V2TXLiveBufferTypeUnknown Unknown
    V2TXLiveBufferTypePixelBuffer This type can be used directly and is the most efficient. The iOS system provides various APIs to get or process pixel buffers.
    V2TXLiveBufferTypeNSData This type affects performance to some extent because the process of converting NSData to PixelBuffer (the format the SDK can handle directly) involves memory copying.
    V2TXLiveBufferTypeTexture Texture ID, which allows direct operation and delivers the best performance.

    Audio APIs

    pauseAudio

    This API is used to pause playing audio streams.

    - (V2TXLiveCode)pauseAudio

    Response

    V2TXLiveCode:
    V2TXLIVE_OK: successful

    resumeAudio

    This API is used to resume playing audio streams.

    - (V2TXLiveCode)resumeAudio

    Response

    V2TXLiveCode:
    V2TXLIVE_OK: successful

    setPlayoutVolume

    This API is used to set volume.

    - (V2TXLiveCode)setPlayoutVolume:(NSUInteger)volume;

    Parameters

    Parameter Type Description
    volume NSUInteger Volume. Value range: 0-100. Default value: 100.

    Response

    V2TXLiveCode:
    V2TXLIVE_OK: successful

    enableVolumeEvaluation

    This API is used to enable the volume reminder for playback.

    Note：

    After enabling the volume reminder, you can get the SDK’s volume evaluation through the [V2TXLivePlayerObserver onPlayoutVolumeUpdate:volume:] callback.

    - (V2TXLiveCode)enableVolumeEvaluation:(NSUInteger)intervalMs

    Parameters

    Parameter Type Description
    intervalMs NSUInteger Interval (ms) for triggering the onPlayoutVolumeUpdate callback. The minimum interval allowed is 100 ms. If the value is 0 (default) or smaller, the callback is disabled. 300 is recommended.

    Response

    V2TXLiveCode:
    V2TXLIVE_OK: successful

    Other APIs

    setCacheParams

    This API is used to set the minimum and maximum cache time (seconds) for auto adjustment by the player.

    - (V2TXLiveCode)setCacheParams:(CGFloat)minTime maxTime:(CGFloat)maxTime

    Parameters

    Parameter Type Description
    minTime CGFloat The minimum cache time for auto adjustment by the player. The value must be greater than 0. Default value: 1
    maxTime CGFloat The maximum cache time for auto adjustment by the player. The value must be greater than 0. Default value: 5

    Response

    V2TXLiveCode:

    • V2TXLIVE_OK: successful
    • V2TXLIVE_ERROR_INVALID_PARAMETER: operation failed. minTime and maxTime must be greater than 0.
    • V2TXLIVE_ERROR_REFUSED: you cannot change the cache policy while streams are being played.

    showDebugView

    This API is used to set whether to show the debug view for the player status information.

    - (void)showDebugView:(BOOL)isShow

    Parameters

    Parameter Type Description
    isShow BOOL Whether to show the debug view. Default value: NO.
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