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remove preview_thread_, cost more time but less memory usage

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This commit is contained in:
Terrence
2025-05-26 07:04:25 +08:00
parent f890220ce3
commit 9f90c7dd6a
2 changed files with 12 additions and 18 deletions
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29
main/boards/common/esp32_camera.cc
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@@ -64,9 +64,6 @@ void Esp32Camera::SetExplainUrl(const std::string& url, const std::string& token
}
bool Esp32Camera::Capture() {
if (preview_thread_.joinable()) {
preview_thread_.join();
}
if (encoder_thread_.joinable()) {
encoder_thread_.join();
}
@@ -84,20 +81,18 @@ bool Esp32Camera::Capture() {
}
}
preview_thread_ = std::thread([this]() {
// 显示预览图片
auto display = Board::GetInstance().GetDisplay();
if (display != nullptr) {
auto src = (uint16_t*)fb_->buf;
auto dst = (uint16_t*)preview_image_.data;
size_t pixel_count = fb_->len / 2;
for (size_t i = 0; i < pixel_count; i++) {
// 交换每个16位字内的字节
dst[i] = __builtin_bswap16(src[i]);
}
display->SetPreviewImage(&preview_image_);
// 显示预览图片
auto display = Board::GetInstance().GetDisplay();
if (display != nullptr) {
auto src = (uint16_t*)fb_->buf;
auto dst = (uint16_t*)preview_image_.data;
size_t pixel_count = fb_->len / 2;
for (size_t i = 0; i < pixel_count; i++) {
// 交换每个16位字内的字节
dst[i] = __builtin_bswap16(src[i]);
}
});
display->SetPreviewImage(&preview_image_);
}
return true;
}
@@ -109,7 +104,7 @@ bool Esp32Camera::Capture() {
* 问题对图像进行AI分析并返回结果。
*
* 实现特点：
* - 使用多线程异步JPEG编码，避免阻塞主线程
* - 使用独立线程编码JPEG，与主线程分离
* - 采用分块传输编码(chunked transfer encoding)优化内存使用
* - 通过队列机制实现编码线程和发送线程的数据同步
* - 支持设备ID、客户端ID和认证令牌的HTTP头部配置