How to use the beamcoder.decoder function in beamcoder
To help you get started, we’ve selected a few beamcoder examples, based on popular ways it is used in public projects.
Secure your code as it's written. Use Snyk Code to scan source code in minutes - no build needed - and fix issues immediately.
Streampunk / casparcl / scratch / ebu_oss_clunker.js View on Github 
await v210Dst.hostAccess('readonly')
// console.log(process.hrtime(lstamp))
return res;
}
async function waitForIt (t) {
return new Promise((resolve, reject) => {
setTimeout(resolve, t > 0 ? t : 0)
})
}
let start = process.hrtime();
let dm1 = await beamy.demuxer('file:../media/dpp/AS11_DPP_HD_EXAMPLE_1.mxf')
await dm1.seek({ time: 240.0 })
let dec1 = await beamy.decoder({ demuxer: dm1, stream_index: 0 })
console.log(dec1)
let dm2 = await beamy.demuxer('file:../media/dpp/AS11_DPP_HD_EXAMPLE_1.mxf')
await dm2.seek({ time: 340.0 })
let dec2 = await beamy.decoder({ demuxer: dm1, stream_index: 0 })
let rate1 = 1.0
let rate2 = 1.0
let nextRate1 = 1.0
let nextRate2 = 1.0
let fraction1 = 0.5
let fraction2 = 0.5
let previous1, previous2
async function read1 (rootCall = true) {
if (rootCall === true) {
fraction1 = fraction1 + rate1const testImageProgram = await context.createProgram(testImage, {
globalWorkItems: Uint32Array.from([ width, height ])
});
const numBytesV210 = v210_io.getPitchBytes(width) * height;
const v210Src = await context.createBuffer(numBytesV210, 'readonly', 'coarse');
const numBytesRGBA = width * height * 4 * 4;
const rgbaDst = await context.createBuffer(numBytesRGBA, 'readwrite', 'coarse');
const imageDst = await context.createBuffer(numBytesRGBA, 'readwrite', 'coarse');
const v210Dst = await context.createBuffer(numBytesV210, 'writeonly', 'coarse');
let dm = await beamy.demuxer('file:../media/dpp/AS11_DPP_HD_EXAMPLE_1.mxf')
console.log(dm)
let dec = await beamy.decoder({ demuxer: dm, stream_index: 0 })
let enc = beamy.encoder({ name: 'v210', codec_id: 127, width: 1920, height: 1080, pix_fmt: 'yuv422p10le', bits_per_raw_sample: 20, time_base: [ 1, 25 ] })
console.log(enc)
let playback = await macadam.playback({
deviceIndex: 0, // Index relative to the 'macadam.getDeviceInfo()' array
displayMode: macadam.bmdModeHD1080i50,
pixelFormat: macadam.bmdFormat10BitYUV
})
let result = []
let counter = 0
async function read() {
let p = await dm.read()
if (p.stream_index === 0) return p
return read()res[0] = await v210Reader.fromV210(v210Src, rgbaDst)
//await rgbaDst.hostAccess('readonly')
// dumpFloatBuf(rgbaDst, 1920, 2, 4);
res[1] = await testImageProgram.run({input: rgbaDst, output: imageDst})
//await imageDst.hostAccess('readonly')
// dumpFloatBuf(imageDst, 1920, 2, 4);
res[2] = await v210Writer.toV210(imageDst, v210Dst)
await v210Dst.hostAccess('readonly')
// v210_io.dumpBuf(v210Dst, 1920, 4);
// console.log(process.hrtime(lstamp))
return res;
}
let dm = await beamy.demuxer('file:../media/dpp/AS11_DPP_HD_EXAMPLE_1.mxf')
console.log(dm)
let dec = await beamy.decoder({ demuxer: dm, stream_index: 0 })
let enc = beamy.encoder({ name: 'v210', codec_id: 127, width: 1920, height: 1080, pix_fmt: 'yuv422p10le', bits_per_raw_sample: 20, time_base: [ 1, 25 ] })
console.log(enc)
let playback = await macadam.playback({
deviceIndex: 0, // Index relative to the 'macadam.getDeviceInfo()' array
displayMode: macadam.bmdModeHD1080i50,
pixelFormat: macadam.bmdFormat10BitYUV
})
let counter = 0
const gen = (push, next) => {
dm.read().then(p => {
if (p.stream_index === 0) {
push(null, p)
next()async function init () {
const platformIndex = 1;
const deviceIndex = 0;
const context = new addon.clContext({
platformIndex: platformIndex,
deviceIndex: deviceIndex
});
const platformInfo = await context.getPlatformInfo();
console.log(platformInfo.vendor, platformInfo.devices[deviceIndex].type);
let demuxer = await beamcoder.demuxer('../../media/dpp/AS11_DPP_HD_EXAMPLE_1.mxf');
await demuxer.seek({ time: 40 });
let decoder = beamcoder.decoder({ name: 'h264' });
let encParams = {
name: 'v210',
width: width,
height: height,
time_base: [1, 25],
framerate: [25, 1],
pix_fmt: 'yuv422p10le',
};
let encoder = beamcoder.encoder(encParams);
const bgColSpecRead = '709';
const ovColSpecRead = 'sRGB';
const colSpecWrite = '709';
v210Loader = new rgbyuv.yuvLoader(context, bgColSpecRead, colSpecWrite, new v210_io.reader(width, height));
await v210Loader.init();async function init () {
const platformIndex = 1;
const deviceIndex = 0;
const context = new addon.clContext({
platformIndex: platformIndex,
deviceIndex: deviceIndex
});
const platformInfo = await context.getPlatformInfo();
console.log(platformInfo.vendor, platformInfo.devices[deviceIndex].type);
let demuxer = await beamcoder.demuxer('../../media/dpp/AS11_DPP_HD_EXAMPLE_1.mxf');
await demuxer.seek({ time: 40 });
let decoder = beamcoder.decoder({ name: 'h264' });
let encParams = {
name: 'v210',
width: width,
height: height,
time_base: [1, 25],
framerate: [25, 1],
pix_fmt: 'yuv422p10le',
};
let encoder = beamcoder.encoder(encParams);
const bgColSpecRead = '709';
const ovColSpecRead = 'sRGB';
const colSpecWrite = '709';
v210Loader = new rgbyuv.yuvLoader(context, bgColSpecRead, colSpecWrite, new v210_io.reader(width, height));
await v210Loader.init();async function init () {
const enableDeinterlace = true;
const platformIndex = 1;
const deviceIndex = 0;
const context = new addon.clContext({
platformIndex: platformIndex,
deviceIndex: deviceIndex,
overlapping: true
});
const platformInfo = await context.getPlatformInfo();
console.log(platformInfo.vendor, platformInfo.devices[deviceIndex].type);
let demuxer = await beamcoder.demuxer('../../media/dpp/AS11_DPP_HD_EXAMPLE_1.mxf');
await demuxer.seek({ time: 40 });
const stream = demuxer.streams[0];
let decoder = beamcoder.decoder({ name: stream.codecpar.name });
let filterer = await beamcoder.filterer({
filterType: 'video',
inputParams: [{
width: stream.codecpar.width,
height: stream.codecpar.height,
pixelFormat: stream.codecpar.format,
timeBase: stream.time_base,
pixelAspect: stream.codecpar.sample_aspect_ratio
}],
outputParams: [{
pixelFormat: stream.codecpar.format
}],
filterSpec: 'yadif=mode=1:parity=-1:deint=0'
})
const bgColSpecRead = '709';
