// Copyright 2020, Chef.  All rights reserved.
// https://github.com/q191201771/lal
//
// Use of this source code is governed by a MIT-style license
// that can be found in the License file.
//
// Author: Chef (191201771@qq.com)

package hevc_test

import (
	"testing"

	"github.com/q191201771/lal/pkg/hevc"
	"github.com/q191201771/naza/pkg/assert"
)

// http://ffmpeg.org/doxygen/trunk/hevc_8c_source.html
// https://chromium.googlesource.com/chromium/src/media/+/master/formats/mp4/hevc.cc
// http://javadox.com/com.googlecode.mp4parser/isoparser/1.0.4.2/com/mp4parser/iso14496/part15/HevcDecoderConfigurationRecord.java.html
// https://github.com/NVIDIA/vdpau-hevc-example/blob/master/gsth265parser.c

var goldenSh2 = []byte{
	0x1c, 0x00, 0x00, 0x00, 0x00,
	0x01,                   // configurationVersion
	0x01,                   // general_profile_space, general_tier_flag, general_profile_idc
	0x60, 0x00, 0x00, 0x00, // general_profile_compatibility_flags
	0x90, 0x00, 0x00, 0x00, 0x00, 0x00, // general_constraint_indicator_flags
	0x3f,       // general_level_idc
	0xf0, 0x00, // min_spatial_segmentation_idc
	0xfc,       // parallelismType
	0xfd,       // chromaFormat
	0xf8,       // bitDepthLumaMinus8
	0xf8,       // bitDepthChromaMinus8
	0x00, 0x00, // avgFrameRate. set 0, 0
	0x0f,                         // constantFrameRate, numTemporalLayers, temporalIdNested, lengthSizeMinusOne
	0x04,                         // num
	0x20, 0x00, 0x01, 0x00, 0x18, // type, num, length
	0x40, 0x01, 0x0c, 0x01, 0xff, 0xff, 0x01, 0x60, 0x00, 0x00, 0x03, 0x00, 0x90, 0x00, 0x00, 0x03, 0x00, 0x00, 0x03, 0x00, 0x3f, 0xba, 0x02, 0x40,
	0x21, 0x00, 0x01, 0x00, 0x2a, //
	0x42, 0x01, 0x01, 0x01, 0x60, 0x00, 0x00, 0x03, 0x00, 0x90, 0x00, 0x00, 0x03, 0x00, 0x00, 0x03, 0x00, 0x3f, 0xa0, 0x05, 0x02, 0x01, 0x71, 0xf2, 0xe5, 0xba, 0x4a, 0x4c, 0x2f, 0x01, 0x01, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03, 0x00, 0x0f, 0x08,
	0x22, 0x00, 0x01, 0x00, 0x06, //
	0x44, 0x01, 0xc0, 0x73, 0xc1, 0x89,
	0x27, 0x00, 0x01, 0x08, 0x1b, // NaluTypeSei
	0x4e, 0x01, 0x05, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x16, 0x2c, 0xa2, 0xde, 0x09, 0xb5, 0x17, 0x47, 0xdb, 0xbb, 0x55, 0xa4, 0xfe, 0x7f, 0xc2, 0xfc, 0x4e, 0x78, 0x32, 0x36, 0x35, 0x20, 0x28, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x20, 0x31, 0x37, 0x39, 0x29, 0x20, 0x2d, 0x20, 0x33, 0x2e, 0x32, 0x2e, 0x31, 0x2b, 0x31, 0x2d, 0x62, 0x35, 0x63, 0x38, 0x36, 0x61, 0x36, 0x34, 0x62, 0x62, 0x62, 0x65, 0x3a, 0x5b, 0x4d, 0x61, 0x63, 0x20, 0x4f, 0x53, 0x20, 0x58, 0x5d, 0x5b, 0x63, 0x6c, 0x61, 0x6e, 0x67, 0x20, 0x31, 0x31, 0x2e, 0x30, 0x2e, 0x30, 0x5d, 0x5b, 0x36, 0x34, 0x20, 0x62, 0x69, 0x74, 0x5d, 0x20, 0x38, 0x62, 0x69, 0x74, 0x20, 0x2d, 0x20, 0x48, 0x2e, 0x32, 0x36, 0x35, 0x2f, 0x48, 0x45, 0x56, 0x43, 0x20, 0x63, 0x6f, 0x64, 0x65, 0x63, 0x20, 0x2d, 0x20, 0x43, 0x6f, 0x70, 0x79, 0x72, 0x69, 0x67, 0x68, 0x74, 0x20, 0x32, 0x30, 0x31, 0x33, 0x2d, 0x32, 0x30, 0x31, 0x38, 0x20, 0x28, 0x63, 0x29, 0x20, 0x4d, 0x75, 0x6c, 0x74, 0x69, 0x63, 0x6f, 0x72, 0x65, 0x77, 0x61, 0x72, 0x65, 0x2c, 0x20, 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}

var goldenVps2 = []byte{
	0x40, 0x01,
	0x0c, 0x01, 0xff, 0xff,
	0x01,
	0x60, 0x00, 0x00, 0x03, 0x00,
	0x90, 0x00, 0x00, 0x03, 0x00, 0x00, 0x03, 0x00,
	0x3f,
	0xba, 0x02, 0x40,
}

var goldenSps2 = []byte{
	0x42, 0x01,
	0x01,
	0x01,
	0x60, 0x00, 0x00, 0x03, 0x00,
	0x90, 0x00, 0x00, 0x03, 0x00, 0x00, 0x03, 0x00,
	0x3f,
	0xa0, 0x05, 0x02, 0x01, 0x71, 0xf2, 0xe5, 0xba, 0x4a, 0x4c, 0x2f, 0x01, 0x01, 0x00, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x03, 0x00, 0x0f, 0x08,
}

var goldenPps2 = []byte{
	0x44, 0x01, 0xc0, 0x73, 0xc1, 0x89,
}

func TestParseVpsSpsPpsFromSeqHeader(t *testing.T) {
	vps, sps, pps, err := hevc.ParseVpsSpsPpsFromSeqHeader(goldenSh2)
	assert.Equal(t, nil, err)
	assert.Equal(t, goldenVps2, vps)
	assert.Equal(t, goldenSps2, sps)
	assert.Equal(t, goldenPps2, pps)
}

func TestVpsSpsPpsSeqHeader2Annexb(t *testing.T) {
	_, err := hevc.VpsSpsPpsSeqHeader2Annexb(goldenSh2)
	assert.Equal(t, nil, err)
}

func TestBuildSeqHeaderFromVpsSpsPps(t *testing.T) {
	out, err := hevc.BuildSeqHeaderFromVpsSpsPps(goldenVps2, goldenSps2, goldenPps2)
	assert.Equal(t, nil, err)

	// golden里面num为4，所以我们hack一下再比较
	goldenSh2[27] = 0x3
	assert.Equal(t, goldenSh2[:115], out)
	goldenSh2[27] = 0x4
}

func TestParseSps(t *testing.T) {
	var ctx hevc.Context
	err := hevc.ParseSps(goldenSps2, &ctx)
	assert.Equal(t, nil, err)
}