mirror of
https://github.com/xiaoqidun/ofdgo.git
synced 2026-10-29 17:27:08 +08:00
83 lines
2.9 KiB
Go
83 lines
2.9 KiB
Go
// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package ofdgo
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import (
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"bytes"
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"crypto/sha256"
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"fmt"
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"strings"
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)
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// AddMedia 注册音频或视频资源，保持原始编码，资源被动作引用后写入文档
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// 本方法不转码或验证媒体编解码器，播放能力由调用方提供
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// 相同类型、格式及内容复用标识；需要独立控制时可通过CopyMedia复制资源
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// 入参: kind 为Audio或Video, format 媒体格式，可为空, data 完整媒体文件
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// 返回: string 资源标识, error 无效类型或数据
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func (e *Editor) AddMedia(kind, format string, data []byte) (string, error) {
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if kind != "Audio" && kind != "Video" {
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return "", fmt.Errorf("media type must be Audio or Video")
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}
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if len(data) == 0 {
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return "", fmt.Errorf("empty media data")
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}
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format = strings.ToUpper(strings.TrimSpace(format))
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key := editorResourceKey{checksum: sha256.Sum256(data), index: -1, kind: kind + "/" + format}
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if id, ok := e.resourceID[key]; ok {
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return id, nil
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}
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if err := e.prepareSourceIDs(); err != nil {
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return "", err
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}
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id := e.nextID()
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name := e.packageName("Res/Media/Media_" + id)
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e.resources = append(e.resources, editorResource{name: name, data: bytes.Clone(data), image: &MultiMedia{ID: id, Type: kind, Format: format, MediaFile: "/" + name}})
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e.resourceID[key] = id
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return id, nil
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}
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// CopyMedia 复制音视频资源定义，共用原始文件，以新标识区分播放控制
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// 原页面资源须先通过Page读取；未被动作引用的副本不写入文档
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// 入参: id 音视频资源标识
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// 返回: string 新资源标识, error 资源缺失、类型或包结构错误
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func (e *Editor) CopyMedia(id string) (string, error) {
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var copy editorResource
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for _, resource := range e.resources {
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if resource.image != nil && resource.image.ID == id {
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copy = resource
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break
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}
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}
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if copy.image == nil && e.source != nil {
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media, err := e.source.reader.Media(id)
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if err != nil {
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return "", err
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}
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media.MediaFile = "/" + cleanPackagePath(e.source.reader.ResPath(media.MediaFile))
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copy.image = &media
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}
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if copy.image == nil || copy.image.Type != "Audio" && copy.image.Type != "Video" {
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return "", fmt.Errorf("audio or video resource %q is unavailable", id)
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}
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if err := e.prepareSourceIDs(); err != nil {
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return "", err
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}
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media := *copy.image
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media.ID = e.nextID()
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copy.image = &media
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e.resources = append(e.resources, copy)
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return media.ID, nil
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}
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