| <!DOCTYPE html> |
| <!-- |
| Take frames coming from various sources and check that: |
| - VideoEncoder can encode frames without resizing |
| - VideoEncoder can change bitrate and frame size |
| - VideoEncoder can encoder frames while resizing to the new width and height |
| --> |
| <html> |
| |
| <head> |
| <title>Encode test</title> |
| <script src="webcodecs_common.js"></script> |
| <script type="text/javascript"> |
| 'use strict'; |
| async function main(arg) { |
| // Use 16x16 aligned resolution since some platforms require that. |
| // See https://crbug.com/1084702. |
| const width = 640; |
| const height = 480; |
| const frames_in_one_pass = 15; |
| let errors = 0; |
| let chunks = []; |
| let decoder_configs = []; |
| |
| const encoder_config = { |
| codec: arg.codec, |
| hardwareAcceleration: arg.acceleration, |
| width: width, |
| height: height, |
| bitrate: 1000000, |
| framerate: 24 |
| }; |
| |
| let support = await VideoEncoder.isConfigSupported(encoder_config); |
| if (!support.supported) { |
| TEST.skip('Unsupported codec: ' + arg.codec); |
| return; |
| } |
| |
| let source = await createFrameSource(arg.source_type, width, height); |
| if (!source) { |
| TEST.skip('Unsupported source: ' + arg.source_type); |
| return; |
| } |
| |
| const init = { |
| output(chunk, metadata) { |
| if (metadata.decoderConfig) |
| decoder_configs.push(metadata.decoderConfig); |
| |
| chunks.push(chunk); |
| }, |
| error(e) { |
| errors++; |
| TEST.log(e); |
| } |
| }; |
| |
| let encoder = new VideoEncoder(init); |
| encoder.configure(encoder_config); |
| |
| for (let i = 0; i < frames_in_one_pass; i++) { |
| let frame = await source.getNextFrame(); |
| encoder.encode(frame, { keyFrame: false }); |
| frame.close(); |
| await waitForNextFrame(); |
| } |
| |
| TEST.log('First pass completed'); |
| |
| // Reconfigure on-the-fly. Use 16x16 aligned resolution since some |
| // platforms require that. See https://crbug.com/1084702. 720x576 is |
| // the maximum supported by AVC level 3.0. |
| encoder_config.width = 720; |
| encoder_config.height = 576; |
| encoder_config.bitrate += encoder_config.bitrate / 2; |
| encoder.configure(encoder_config); |
| |
| for (let i = 0; i < frames_in_one_pass; i++) { |
| let frame = await source.getNextFrame(); |
| encoder.encode(frame, { keyFrame: false }); |
| frame.close(); |
| await waitForNextFrame(); |
| } |
| |
| await encoder.flush(); |
| encoder.close(); |
| source.close(); |
| |
| TEST.assert( |
| decoder_configs.length >= 2, |
| 'There should be 2 configs, for each configure()'); |
| |
| TEST.assert( |
| chunks.length == frames_in_one_pass * 2, |
| 'Output count mismatch: ' + chunks.length); |
| |
| TEST.assert(errors == 0, 'Encoding errors occurred during the test'); |
| TEST.log('Test completed'); |
| } |
| </script> |
| </head> |
| |
| <body> |
| </body> |
| |
| </html> |
