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cros-codecs 0.0.6

Hardware-accelerated codecs for Linux
Documentation 
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// Copyright 2024 The ChromiumOS Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

use cros_codecs::image_processing::*;
use std::ptr;
use std::time::{Duration, Instant};

const K_NUMBER_OF_TEST_CYCLES: u64 = 2000;
const K_ADDR_ALIGN: usize = 16;
const K_DATA_LEN: usize = 480 * 288 * 3 / 2;

#[cfg(feature = "v4l2")]
fn test_mm21_to_nv12_perf() {
    let test_input = include_bytes!("../src/test_data/puppets-480x270_20230825.mm21.yuv");
    let test_expected_output = include_bytes!("../src/test_data/puppets-480x270_20230825.nv12.yuv");

    // Byte align test input.
    let mut aligned_input = [0u8; (K_DATA_LEN + K_ADDR_ALIGN)];
    let mut index = K_ADDR_ALIGN - (ptr::addr_of!(aligned_input[0]) as usize % K_ADDR_ALIGN);
    let input_data = aligned_input.get_mut(index..(index + K_DATA_LEN)).unwrap();
    input_data.copy_from_slice(test_input);

    // Byte align test output.
    let mut aligned_output = [0u8; (K_DATA_LEN + K_ADDR_ALIGN)];
    index = K_ADDR_ALIGN - (ptr::addr_of!(aligned_output[0]) as usize % K_ADDR_ALIGN);
    let output_data = aligned_output.get_mut(index..(index + K_DATA_LEN)).unwrap();
    let (test_y_output, test_uv_output) = output_data.split_at_mut(480 * 288);

    let start_time = Instant::now();
    for _cycle in 0..K_NUMBER_OF_TEST_CYCLES {
        let _ = mm21_to_nv12(
            &input_data[0..480 * 288],
            480,
            test_y_output,
            480,
            &input_data[480 * 288..480 * 288 * 3 / 2],
            480,
            test_uv_output,
            480,
            480,
            288,
        );
    }

    let duration_us = ((Instant::now() - start_time).as_micros()) as f64;

    let fps = K_NUMBER_OF_TEST_CYCLES as f64 / (duration_us / 1000000f64);

    println!("MM21 to NV12 Perf Test Results");
    println!("-----------------------------------");
    println!("Frames Decoded: {}", K_NUMBER_OF_TEST_CYCLES);
    println!("TotalDurationMs: {}", duration_us);
    println!("FramesPerSecond: {}\n\n", fps);

    assert_eq!(output_data, *test_expected_output);
}

fn test_nv12_to_i420_perf() {
    let test_input = include_bytes!("../src/test_data/puppets-480x270_20230825.nv12.yuv");
    let test_expected_output = include_bytes!("../src/test_data/puppets-480x270_20230825.i420.yuv");

    let mut test_output = [0u8; 480 * 288 * 3 / 2];
    let (test_y_output, test_uv_output) = test_output.split_at_mut(480 * 288);
    let (test_u_output, test_v_output) = test_uv_output.split_at_mut(480 * 288 / 4);

    let start_time = Instant::now();
    for _cycle in 0..K_NUMBER_OF_TEST_CYCLES {
        let _ = nv12_to_i420(
            &test_input[0..480 * 288],
            480,
            test_y_output,
            480,
            &test_input[480 * 288..480 * 288 * 3 / 2],
            480,
            test_u_output,
            240,
            test_v_output,
            240,
            480,
            288,
        );
    }

    let duration_us = ((Instant::now() - start_time).as_micros()) as f64;

    let fps = K_NUMBER_OF_TEST_CYCLES as f64 / (duration_us / 1000000f64);

    println!("NV12 to I420 Perf Test Results");
    println!("-----------------------------------");
    println!("Frames Decoded: {}", K_NUMBER_OF_TEST_CYCLES);
    println!("TotalDurationMs: {}", duration_us);
    println!("FramesPerSecond: {}\n\n", fps);

    assert_eq!(test_output, *test_expected_output);
}

fn test_i420_to_nv12_perf() {
    let test_input = include_bytes!("../src/test_data/puppets-480x270_20230825.i420.yuv");
    let test_expected_output = include_bytes!("../src/test_data/puppets-480x270_20230825.nv12.yuv");

    let mut test_output = [0u8; 480 * 288 * 3 / 2];
    let (test_y_output, test_uv_output) = test_output.split_at_mut(480 * 288);

    let start_time = Instant::now();
    for _cycle in 0..K_NUMBER_OF_TEST_CYCLES {
        let _ = i420_to_nv12(
            &test_input[0..(480 * 288)],
            test_y_output,
            &test_input[(480 * 288)..(480 * 288 * 5 / 4)],
            &test_input[(480 * 288 * 5 / 4)..(480 * 288 * 3 / 2)],
            test_uv_output,
        );
    }

    let duration_us = ((Instant::now() - start_time).as_micros()) as f64;

    let fps = K_NUMBER_OF_TEST_CYCLES as f64 / (duration_us / 1000000f64);

    println!("I420 to NV12 Perf Test Results");
    println!("-----------------------------------");
    println!("Frames Decoded: {}", K_NUMBER_OF_TEST_CYCLES);
    println!("TotalDurationMs: {}", duration_us);
    println!("FramesPerSecond: {}\n\n", fps);

    assert_eq!(test_output, *test_expected_output);
}

fn main() {
    #[cfg(feature = "v4l2")]
    test_mm21_to_nv12_perf();

    test_nv12_to_i420_perf();
    test_i420_to_nv12_perf();
}