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feat(qmc): support audio meta getter

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This commit is contained in:
Unlock Music Dev 2022-11-22 11:08:35 +08:00
parent 138adbf846
commit 9494a535a9
Signed by untrusted user: um-dev
GPG Key ID: 95202E10D3413A1D
6 changed files with 441 additions and 18 deletions
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151
algo/qmc/client/base.go Normal file
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@ -0,0 +1,151 @@
package client
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
"net/http"
"time"
)
const endpointURL = "https://u.y.qq.com/cgi-bin/musicu.fcg"
type QQMusic struct {
http *http.Client
}
func (c *QQMusic) doRequest(ctx context.Context, reqBody any) ([]byte, error) {
reqBodyBuf, ok := reqBody.([]byte)
if !ok {
var err error
reqBodyBuf, err = json.Marshal(reqBody)
if err != nil {
return nil, fmt.Errorf("qqMusicClient[doRequest] marshal request: %w", err)
}
}
req, err := http.NewRequestWithContext(ctx, http.MethodPost,
endpointURL+fmt.Sprintf("?pcachetime=%d", time.Now().Unix()),
bytes.NewReader(reqBodyBuf),
)
if err != nil {
return nil, fmt.Errorf("qqMusicClient[doRequest] create request: %w", err)
}
req.Header.Set("Accept", "*/*")
req.Header.Set("Accept-Language", "zh-CN")
req.Header.Set("User-Agent", "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)")
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
// req.Header.Set("Accept-Encoding", "gzip, deflate")
reqp, err := c.http.Do(req)
if err != nil {
return nil, fmt.Errorf("qqMusicClient[doRequest] send request: %w", err)
}
defer reqp.Body.Close()
respBodyBuf, err := io.ReadAll(reqp.Body)
if err != nil {
return nil, fmt.Errorf("qqMusicClient[doRequest] read response: %w", err)
}
return respBodyBuf, nil
}
type rpcRequest struct {
Method string `json:"method"`
Module string `json:"module"`
Param any `json:"param"`
}
type rpcResponse struct {
Code int `json:"code"`
Ts int64 `json:"ts"`
StartTs int64 `json:"start_ts"`
TraceID string `json:"traceid"`
}
type rpcSubResponse struct {
Code int `json:"code"`
Data json.RawMessage `json:"data"`
}
func (c *QQMusic) rpcCall(ctx context.Context,
protocol string, method string, module string,
param any,
) (json.RawMessage, error) {
reqBody := map[string]any{protocol: rpcRequest{
Method: method,
Module: module,
Param: param,
}}
respBodyBuf, err := c.doRequest(ctx, reqBody)
if err != nil {
return nil, fmt.Errorf("qqMusicClient[rpcCall] do request: %w", err)
}
// check rpc response status
respStatus := rpcResponse{}
if err := json.Unmarshal(respBodyBuf, &respStatus); err != nil {
return nil, fmt.Errorf("qqMusicClient[rpcCall] unmarshal response: %w", err)
}
if respStatus.Code != 0 {
return nil, fmt.Errorf("qqMusicClient[rpcCall] rpc error: %d", respStatus.Code)
}
// parse response data
var respBody map[string]json.RawMessage
if err := json.Unmarshal(respBodyBuf, &respBody); err != nil {
return nil, fmt.Errorf("qqMusicClient[rpcCall] unmarshal response: %w", err)
}
subRespBuf, ok := respBody[protocol]
if !ok {
return nil, fmt.Errorf("qqMusicClient[rpcCall] sub-response not found")
}
subResp := rpcSubResponse{}
if err := json.Unmarshal(subRespBuf, &subResp); err != nil {
return nil, fmt.Errorf("qqMusicClient[rpcCall] unmarshal sub-response: %w", err)
}
if subResp.Code != 0 {
return nil, fmt.Errorf("qqMusicClient[rpcCall] sub-response error: %d", subResp.Code)
}
return subResp.Data, nil
}
func (c *QQMusic) downloadFile(ctx context.Context, url string) ([]byte, error) {
req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
if err != nil {
return nil, fmt.Errorf("qmc[downloadFile] init request: %w", err)
}
//req.Header.Set("Accept", "image/webp,image/*,*/*;q=0.8") // jpeg is preferred to embed in audio
req.Header.Set("Accept-Language", "zh-CN,zh;q=0.8,en-US;q=0.6,en;q=0.5;q=0.4")
req.Header.Set("User-Agent", "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.47.134 Safari/537.36 QBCore/3.53.47.400 QQBrowser/9.0.2524.400")
resp, err := c.http.Do(req)
if err != nil {
return nil, fmt.Errorf("qmc[downloadFile] send request: %w", err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("qmc[downloadFile] unexpected http status %s", resp.Status)
}
return io.ReadAll(resp.Body)
}
func NewQQMusicClient() *QQMusic {
return &QQMusic{
http: &http.Client{
Timeout: 10 * time.Second,
},
}
}

21
algo/qmc/client/cover.go Normal file
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@ -0,0 +1,21 @@
package client
import (
"context"
"fmt"
"strconv"
)
func (c *QQMusic) AlbumCoverByID(ctx context.Context, albumID int) ([]byte, error) {
u := fmt.Sprintf("https://imgcache.qq.com/music/photo/album/%s/albumpic_%s_0.jpg",
strconv.Itoa(albumID%100),
strconv.Itoa(albumID),
)
return c.downloadFile(ctx, u)
}
func (c *QQMusic) AlbumCoverByMediaID(ctx context.Context, mediaID string) ([]byte, error) {
// original: https://y.gtimg.cn/music/photo_new/T002M000%s.jpg
u := fmt.Sprintf("https://y.gtimg.cn/music/photo_new/T002R500x500M000%s.jpg", mediaID)
return c.downloadFile(ctx, u)
}

178
algo/qmc/client/track.go Normal file
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@ -0,0 +1,178 @@
package client
import (
"context"
"encoding/json"
"fmt"
"github.com/samber/lo"
)
type getTrackInfoParams struct {
Ctx int `json:"ctx"`
Ids []int `json:"ids"`
Types []int `json:"types"`
}
type getTrackInfoResponse struct {
Tracks []*TrackInfo `json:"tracks"`
}
func (c *QQMusic) GetTracksInfo(ctx context.Context, songIDs []int) ([]*TrackInfo, error) {
resp, err := c.rpcCall(ctx,
"Protocol_UpdateSongInfo",
"CgiGetTrackInfo",
"music.trackInfo.UniformRuleCtrl",
&getTrackInfoParams{Ctx: 0, Ids: songIDs, Types: []int{0}},
)
if err != nil {
return nil, fmt.Errorf("qqMusicClient[GetTrackInfo] rpc call: %w", err)
}
respData := getTrackInfoResponse{}
if err := json.Unmarshal(resp, &respData); err != nil {
return nil, fmt.Errorf("qqMusicClient[GetTrackInfo] unmarshal response: %w", err)
}
return respData.Tracks, nil
}
func (c *QQMusic) GetTrackInfo(ctx context.Context, songID int) (*TrackInfo, error) {
tracks, err := c.GetTracksInfo(ctx, []int{songID})
if err != nil {
return nil, fmt.Errorf("qqMusicClient[GetTrackInfo] get tracks info: %w", err)
}
if len(tracks) == 0 {
return nil, fmt.Errorf("qqMusicClient[GetTrackInfo] track not found")
}
return tracks[0], nil
}
type TrackSinger struct {
Id int `json:"id"`
Mid string `json:"mid"`
Name string `json:"name"`
Title string `json:"title"`
Type int `json:"type"`
Uin int `json:"uin"`
Pmid string `json:"pmid"`
}
type TrackAlbum struct {
Id int `json:"id"`
Mid string `json:"mid"`
Name string `json:"name"`
Title string `json:"title"`
Subtitle string `json:"subtitle"`
Pmid string `json:"pmid"`
}
type TrackInfo struct {
Id int `json:"id"`
Type int `json:"type"`
Mid string `json:"mid"`
Name string `json:"name"`
Title string `json:"title"`
Subtitle string `json:"subtitle"`
Singer []TrackSinger `json:"singer"`
Album TrackAlbum `json:"album"`
Mv struct {
Id int `json:"id"`
Vid string `json:"vid"`
Name string `json:"name"`
Title string `json:"title"`
Vt int `json:"vt"`
} `json:"mv"`
Interval int `json:"interval"`
Isonly int `json:"isonly"`
Language int `json:"language"`
Genre int `json:"genre"`
IndexCd int `json:"index_cd"`
IndexAlbum int `json:"index_album"`
TimePublic string `json:"time_public"`
Status int `json:"status"`
Fnote int `json:"fnote"`
File struct {
MediaMid string `json:"media_mid"`
Size24Aac int `json:"size_24aac"`
Size48Aac int `json:"size_48aac"`
Size96Aac int `json:"size_96aac"`
Size192Ogg int `json:"size_192ogg"`
Size192Aac int `json:"size_192aac"`
Size128Mp3 int `json:"size_128mp3"`
Size320Mp3 int `json:"size_320mp3"`
SizeApe int `json:"size_ape"`
SizeFlac int `json:"size_flac"`
SizeDts int `json:"size_dts"`
SizeTry int `json:"size_try"`
TryBegin int `json:"try_begin"`
TryEnd int `json:"try_end"`
Url string `json:"url"`
SizeHires int `json:"size_hires"`
HiresSample int `json:"hires_sample"`
HiresBitdepth int `json:"hires_bitdepth"`
B30S int `json:"b_30s"`
E30S int `json:"e_30s"`
Size96Ogg int `json:"size_96ogg"`
Size360Ra []interface{} `json:"size_360ra"`
SizeDolby int `json:"size_dolby"`
SizeNew []interface{} `json:"size_new"`
} `json:"file"`
Pay struct {
PayMonth int `json:"pay_month"`
PriceTrack int `json:"price_track"`
PriceAlbum int `json:"price_album"`
PayPlay int `json:"pay_play"`
PayDown int `json:"pay_down"`
PayStatus int `json:"pay_status"`
TimeFree int `json:"time_free"`
} `json:"pay"`
Action struct {
Switch int `json:"switch"`
Msgid int `json:"msgid"`
Alert int `json:"alert"`
Icons int `json:"icons"`
Msgshare int `json:"msgshare"`
Msgfav int `json:"msgfav"`
Msgdown int `json:"msgdown"`
Msgpay int `json:"msgpay"`
Switch2 int `json:"switch2"`
Icon2 int `json:"icon2"`
} `json:"action"`
Ksong struct {
Id int `json:"id"`
Mid string `json:"mid"`
} `json:"ksong"`
Volume struct {
Gain float64 `json:"gain"`
Peak float64 `json:"peak"`
Lra float64 `json:"lra"`
} `json:"volume"`
Label string `json:"label"`
Url string `json:"url"`
Ppurl string `json:"ppurl"`
Bpm int `json:"bpm"`
Version int `json:"version"`
Trace string `json:"trace"`
DataType int `json:"data_type"`
ModifyStamp int `json:"modify_stamp"`
Aid int `json:"aid"`
Tid int `json:"tid"`
Ov int `json:"ov"`
Sa int `json:"sa"`
Es string `json:"es"`
Vs []string `json:"vs"`
}
func (t *TrackInfo) GetArtists() []string {
return lo.Map(t.Singer, func(v TrackSinger, i int) string {
return v.Name
})
}
func (t *TrackInfo) GetTitle() string {
return t.Title
}
func (t *TrackInfo) GetAlbum() string {
return t.Album.Name
}

12
algo/qmc/qmc.go
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@ -27,9 +27,17 @@ type Decoder struct {
decodedKey []byte // decodedKey is the decoded key for cipher
cipher common.StreamDecoder
rawMetaExtra1 int
songID int
rawMetaExtra2 int
albumID int
albumMediaID string
// cache
meta common.AudioMeta
cover []byte
// provider
logger *zap.Logger
}
@ -199,7 +207,7 @@ func (d *Decoder) readRawMetaQTag() error {
return err
}
d.rawMetaExtra1, err = strconv.Atoi(items[1])
d.songID, err = strconv.Atoi(items[1])
if err != nil {
return err
}

65
algo/qmc/qmc_meta.go Normal file
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@ -0,0 +1,65 @@
package qmc
import (
"context"
"errors"
"fmt"
"unlock-music.dev/cli/algo/common"
"unlock-music.dev/cli/algo/qmc/client"
)
func (d *Decoder) GetAudioMeta(ctx context.Context) (common.AudioMeta, error) {
if d.meta != nil {
return d.meta, nil
}
if d.songID != 0 {
return d.meta, d.getMetaBySongID(ctx)
}
return nil, errors.New("qmc[GetAudioMeta] not implemented")
}
func (d *Decoder) getMetaBySongID(ctx context.Context) error {
c := client.NewQQMusicClient() // todo: use global client
trackInfo, err := c.GetTrackInfo(ctx, d.songID)
if err != nil {
return fmt.Errorf("qmc[GetAudioMeta] get track info: %w", err)
}
d.meta = trackInfo
d.albumID = trackInfo.Album.Id
if trackInfo.Album.Pmid == "" {
d.albumMediaID = trackInfo.Album.Pmid
} else {
d.albumMediaID = trackInfo.Album.Mid
}
return nil
}
func (d *Decoder) GetCoverImage(ctx context.Context) ([]byte, error) {
if d.cover != nil {
return d.cover, nil
}
// todo: get meta if possible
c := client.NewQQMusicClient() // todo: use global client
var err error
if d.albumMediaID != "" {
d.cover, err = c.AlbumCoverByMediaID(ctx, d.albumMediaID)
if err != nil {
return nil, fmt.Errorf("qmc[GetCoverImage] get cover by media id: %w", err)
}
} else if d.albumID != 0 {
d.cover, err = c.AlbumCoverByID(ctx, d.albumID)
if err != nil {
return nil, fmt.Errorf("qmc[GetCoverImage] get cover by id: %w", err)
}
} else {
return nil, errors.New("qmc[GetAudioMeta] album (or media) id is empty")
}
return d.cover, nil
}

32
cmd/um/main.go
View File

@ -209,6 +209,22 @@ func tryDecFile(inputFile string, outputDir string, allDec []common.NewDecoderFu
return err
}
if audioMetaGetter, ok := dec.(common.AudioMetaGetter); ok {
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
meta, err := audioMetaGetter.GetAudioMeta(ctx)
if err != nil {
logger.Warn("get audio meta failed", zap.Error(err))
} else {
logger.Info("audio metadata",
zap.String("title", meta.GetTitle()),
zap.Strings("artists", meta.GetArtists()),
zap.String("album", meta.GetAlbum()),
)
}
}
if coverGetter, ok := dec.(common.CoverImageGetter); ok {
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
@ -227,22 +243,6 @@ func tryDecFile(inputFile string, outputDir string, allDec []common.NewDecoderFu
}
}
if audioMetaGetter, ok := dec.(common.AudioMetaGetter); ok {
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
meta, err := audioMetaGetter.GetAudioMeta(ctx)
if err != nil {
logger.Warn("get audio meta failed", zap.Error(err))
} else {
logger.Info("audio metadata",
zap.String("title", meta.GetTitle()),
zap.Strings("artists", meta.GetArtists()),
zap.String("album", meta.GetAlbum()),
)
}
}
// if source file need to be removed
if removeSource {
err := os.RemoveAll(inputFile)