// Copyright 2018 The Fuchsia Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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library fuchsia.media;
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// Describes the type of an elementary stream.
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struct StreamType {
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// Medium-specific type information.
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MediumSpecificStreamType medium_specific;
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// Encoding (see constants below).
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string encoding;
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// Encoding-specific parameters.
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vector<uint8>? encoding_parameters;
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};
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// A union of all medium-specific stream type structs.
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union MediumSpecificStreamType {
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AudioStreamType audio;
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VideoStreamType video;
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TextStreamType text;
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SubpictureStreamType subpicture;
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};
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const string MEDIA_ENCODING_UNSUPPORTED = "fuchsia.media.unsupported";
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const string AUDIO_ENCODING_AAC = "fuchsia.media.aac";
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const string AUDIO_ENCODING_AMRNB = "fuchsia.media.amrnb";
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const string AUDIO_ENCODING_AMRWB = "fuchsia.media.amrwb";
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const string AUDIO_ENCODING_APTX = "fuchsia.media.aptx";
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const string AUDIO_ENCODING_FLAC = "fuchsia.media.flac";
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const string AUDIO_ENCODING_GSMMS = "fuchsia.media.gsmms";
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const string AUDIO_ENCODING_LPCM = "fuchsia.media.lpcm";
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const string AUDIO_ENCODING_MP3 = "fuchsia.media.mp3";
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const string AUDIO_ENCODING_PCMALAW = "fuchsia.media.pcmalaw";
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const string AUDIO_ENCODING_PCMMULAW = "fuchsia.media.pcmmulaw";
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const string AUDIO_ENCODING_SBC = "fuchsia.media.sbc";
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const string AUDIO_ENCODING_VORBIS = "fuchsia.media.vorbis";
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const string VIDEO_ENCODING_H263 = "fuchsia.media.h263";
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const string VIDEO_ENCODING_H264 = "fuchsia.media.h264";
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const string VIDEO_ENCODING_MPEG4 = "fuchsia.media.mpeg4";
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const string VIDEO_ENCODING_THEORA = "fuchsia.media.theora";
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const string VIDEO_ENCODING_UNCOMPRESSED = "fuchsia.media.uncompressed_video";
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const string VIDEO_ENCODING_VP3 = "fuchsia.media.vp3";
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const string VIDEO_ENCODING_VP8 = "fuchsia.media.vp8";
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const string VIDEO_ENCODING_VP9 = "fuchsia.media.vp9";
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///////////////////////////////////////////////////////////////////////////////
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// Audio
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// Describes the type of an audio elementary stream.
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struct AudioStreamType {
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AudioSampleFormat sample_format;
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uint32 channels;
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uint32 frames_per_second;
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// TODO(mpuryear): Add channel config.
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};
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enum AudioSampleFormat {
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// 8-bit unsigned samples, sample size 1 byte.
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UNSIGNED_8 = 1;
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// 16-bit signed samples, host-endian, sample size 2 bytes.
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SIGNED_16 = 2;
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// 24-bit signed samples in 32 bits, host-endian, sample size 4 bytes.
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SIGNED_24_IN_32 = 3;
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// 32-bit floating-point samples, sample size 4 bytes.
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FLOAT = 4;
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};
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///////////////////////////////////////////////////////////////////////////////
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// Video
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// Describes the type of a video elementary stream.
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struct VideoStreamType {
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VideoProfile profile;
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// TODO(dalesat): Use fuchsia.images.PixelFormat.
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PixelFormat pixel_format;
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// TODO(dalesat): Use fuchsia.images.ColorSpace.
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ColorSpace color_space;
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uint32 width;
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uint32 height;
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uint32 coded_width;
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uint32 coded_height;
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uint32 pixel_aspect_ratio_width;
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uint32 pixel_aspect_ratio_height;
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// TODO(dalesat): Change to single line_stride value for all planes.
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vector<uint32> line_stride;
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// TODO(dalesat): Remove.
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vector<uint32> plane_offset;
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};
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// TODO(dalesat): Blindly copied from Chromium, revisit.
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enum VideoProfile {
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UNKNOWN = 0;
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NOT_APPLICABLE = 1;
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H264_BASELINE = 2;
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H264_MAIN = 3;
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H264_EXTENDED = 4;
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H264_HIGH = 5;
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H264_HIGH10 = 6;
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H264_HIGH422 = 7;
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H264_HIGH444_PREDICTIVE = 8;
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H264_SCALABLE_BASELINE = 9;
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H264_SCALABLE_HIGH = 10;
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H264_STEREO_HIGH = 11;
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H264_MULTIVIEW_HIGH = 12;
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};
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// TODO(dalesat): Replace with fuchsia.images.PixelFormat.
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enum PixelFormat {
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UNKNOWN = 0;
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I420 = 1; // 12bpp YUV planar 1x1 Y, 2x2 UV samples, a.k.a. YU12.
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YV12 = 2; // 12bpp YVU planar 1x1 Y, 2x2 VU samples.
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YV16 = 3; // 16bpp YVU planar 1x1 Y, 2x1 VU samples.
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YV12A = 4; // 20bpp YUVA planar 1x1 Y, 2x2 VU, 1x1 A samples.
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YV24 = 5; // 24bpp YUV planar, no subsampling.
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NV12 = 6; // 12bpp with Y plane followed by a 2x2 interleaved UV plane.
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NV21 = 7; // 12bpp with Y plane followed by a 2x2 interleaved VU plane.
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UYVY = 8; // 16bpp interleaved 2x1 U, 1x1 Y, 2x1 V, 1x1 Y samples.
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YUY2 = 9; // 16bpp interleaved 1x1 Y, 2x1 U, 1x1 Y, 2x1 V samples.
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ARGB = 10; // 32bpp ARGB, 1 plane.
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XRGB = 11; // 24bpp XRGB, 1 plane.
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RGB24 = 12; // 24bpp BGR, 1 plane.
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RGB32 = 13; // 32bpp BGRA, 1 plane.
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MJPEG = 14; // MJPEG compressed.
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MT21 = 15;
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};
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// TODO(dalesat): Replace with fuchsia.images.ColorSpace.
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enum ColorSpace {
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UNKNOWN = 0;
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NOT_APPLICABLE = 1;
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JPEG = 2;
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HD_REC709 = 3;
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SD_REC601 = 4;
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};
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///////////////////////////////////////////////////////////////////////////////
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// Text
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struct TextStreamType {
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// TODO(dalesat): Define.
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uint8 dummy;
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};
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///////////////////////////////////////////////////////////////////////////////
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// Subpicture
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struct SubpictureStreamType {
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// TODO(dalesat): Define.
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uint8 dummy;
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};
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