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perf(video): 改善视频卡顿问题并优化编码性能

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改善内容:
1. NAL单元duration累积bug修复
   - 修改video_track.rs和unified_video_track.rs
   - 只有帧内最后一个NAL获得frame_duration,其他为ZERO
   - 确保同一帧的所有NAL共享相同的RTP时间戳

2. 修复VP8/VP9固定1秒duration错误
   - 将Duration::from_secs(1)改为正确的frame_duration计算

3. PTS计算优化(shared_video_pipeline.rs)
   - 将pipeline_start_time从Mutex<Option<Instant>>改为AtomicI64
   - 消除每帧一次的async mutex lock
   - 使用compare_exchange实现无锁的首帧时间设置

4. 避免重复读取config
   - 在encode_frame中缓存fps,避免末尾再次获取config锁

5. 编码器零拷贝优化
   - H264/H265/VP8/VP9编码器使用drain()替代clone()
   - 减少内存分配和拷贝开销

6. MJPEG处理器优化
   - 无客户端时跳过JPEG编码(WebRTC-only模式优化)

7. RKMPP YUYV直接输入支持
   - hwcodec C++层添加YUYV422格式支持
   - H264编码器添加Yuyv422输入格式选项
This commit is contained in:
mofeng-git
2026-01-02 11:58:55 +08:00
parent 0fc5be21c6
commit 04e62d1e3f
9 changed files with 168 additions and 40 deletions
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21
libs/hwcodec/cpp/ffmpeg_ram/ffmpeg_ram_encode.cpp
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@@ -33,6 +33,14 @@ static int calculate_offset_length(int pix_fmt, int height, const int *linesize,
offset[0] = linesize[0] * height;
*length = offset[0] + linesize[1] * height / 2;
break;
case AV_PIX_FMT_YUYV422:
case AV_PIX_FMT_YVYU422:
case AV_PIX_FMT_UYVY422:
// Packed YUV 4:2:2 formats: single plane, 2 bytes per pixel
// linesize[0] = width * 2 (YUYV/YVYU/UYVY are interleaved)
offset[0] = 0; // Only one plane
*length = linesize[0] * height;
break;
default:
LOG_ERROR(std::string("unsupported pixfmt") + std::to_string(pix_fmt));
return -1;
@@ -413,6 +421,19 @@ private:
frame->data[1] = data + offset[0];
frame->data[2] = data + offset[1];
break;
case AV_PIX_FMT_YUYV422:
case AV_PIX_FMT_YVYU422:
case AV_PIX_FMT_UYVY422:
// Packed YUV 4:2:2 formats: single plane, linesize[0] = width * 2
if (data_length < frame->height * frame->linesize[0]) {
LOG_ERROR(std::string("fill_frame: YUYV422 data length error. data_length:") +
std::to_string(data_length) +
", linesize[0]:" + std::to_string(frame->linesize[0]) +
", height:" + std::to_string(frame->height));
return -1;
}
frame->data[0] = data;
break;
default:
LOG_ERROR(std::string("fill_frame: unsupported format, ") +
std::to_string(frame->format));