client-sdk-cpp/src/video_utils.cpp at main · Sqhh99/client-sdk-cpp · GitHub

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* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an “AS IS” BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

#include "livekit/video_frame.h"

#include <cstring>

#include <stdexcept>

#include <vector>

#include "ffi.pb.h"

#include "ffi_client.h"

#include "livekit/ffi_handle.h"

#include "video_frame.pb.h"

namespace livekit {

proto::VideoBufferType toProto(VideoBufferType t) {

switch (t) {

case VideoBufferType::ARGB:

return proto::VideoBufferType::ARGB;

case VideoBufferType::ABGR:

return proto::VideoBufferType::ABGR;

case VideoBufferType::RGBA:

return proto::VideoBufferType::RGBA;

case VideoBufferType::BGRA:

return proto::VideoBufferType::BGRA;

case VideoBufferType::RGB24:

return proto::VideoBufferType::RGB24;

case VideoBufferType::I420:

return proto::VideoBufferType::I420;

case VideoBufferType::I420A:

return proto::VideoBufferType::I420A;

case VideoBufferType::I422:

return proto::VideoBufferType::I422;

case VideoBufferType::I444:

return proto::VideoBufferType::I444;

case VideoBufferType::I010:

return proto::VideoBufferType::I010;

case VideoBufferType::NV12:

return proto::VideoBufferType::NV12;

default:

throw std::runtime_error("Unknown VideoBufferType in toProto");

}

// Map proto enum -> SDK enum

VideoBufferType fromProto(proto::VideoBufferType t) {

switch (t) {

case proto::VideoBufferType::ARGB:

return VideoBufferType::ARGB;

case proto::VideoBufferType::ABGR:

return VideoBufferType::ABGR;

case proto::VideoBufferType::RGBA:

return VideoBufferType::RGBA;

case proto::VideoBufferType::BGRA:

return VideoBufferType::BGRA;

case proto::VideoBufferType::RGB24:

return VideoBufferType::RGB24;

case proto::VideoBufferType::I420:

return VideoBufferType::I420;

case proto::VideoBufferType::I420A:

return VideoBufferType::I420A;

case proto::VideoBufferType::I422:

return VideoBufferType::I422;

case proto::VideoBufferType::I444:

return VideoBufferType::I444;

case proto::VideoBufferType::I010:

return VideoBufferType::I010;

case proto::VideoBufferType::NV12:

return VideoBufferType::NV12;

default:

throw std::runtime_error("Unknown proto::VideoBufferType in fromProto");

}

proto::VideoBufferInfo toProto(const VideoFrame &frame) {

proto::VideoBufferInfo info;

const int w = frame.width();

const int h = frame.height();

info.set_width(w);

info.set_height(h);

info.set_type(toProto(frame.type()));

// Backing data pointer for the whole buffer

auto base_ptr = reinterpret_cast<std::uint64_t>(frame.data());

info.set_data_ptr(base_ptr);

// Compute plane layout for the current format

auto planes = frame.planeInfos();

for (const auto &plane : planes) {

auto *cmpt = info.add_components();

cmpt->set_data_ptr(static_cast<std::uint64_t>(plane.data_ptr));

cmpt->set_stride(plane.stride);

cmpt->set_size(plane.size);

}

// Stride for main packed formats.

std::uint32_t stride = 0;

switch (frame.type()) {

case VideoBufferType::ARGB:

case VideoBufferType::ABGR:

case VideoBufferType::RGBA:

case VideoBufferType::BGRA:

stride = static_cast<std::uint32_t>(w) * 4;

break;

case VideoBufferType::RGB24:

stride = static_cast<std::uint32_t>(w) * 3;

break;

default:

stride = 0; // not used / unknown for planar formats

break;

}

info.set_stride(stride);

return info;

}

VideoFrame fromOwnedProto(const proto::OwnedVideoBuffer &owned) {

const auto &info = owned.info();

const int width = static_cast<int>(info.width());

const int height = static_cast<int>(info.height());

const VideoBufferType type = fromProto(info.type());

// Allocate a new VideoFrame with the correct size/format

VideoFrame frame = VideoFrame::create(width, height, type);

// Copy from the FFI-provided buffer into our own backing storage

auto *dst = frame.data();

const std::size_t dst_size = frame.dataSize();

const auto src_ptr = info.data_ptr();

if (src_ptr == 0) {

throw std::runtime_error("fromOwnedProto: info.data_ptr is null");

}

const auto *src = reinterpret_cast<const std::uint8_t *>(src_ptr);

std::memcpy(dst, src, dst_size);

// Drop the owned FFI handle to let the core free its side.

{

FfiHandle tmp(owned.handle().id());

// tmp destructor will dispose the handle via FFI.

}

return frame;

}

VideoFrame convertViaFfi(const VideoFrame &frame, VideoBufferType dst,

bool flip_y) {

proto::FfiRequest req;

auto *vc = req.mutable_video_convert();

vc->set_flip_y(flip_y);

vc->set_dst_type(toProto(dst));

vc->mutable_buffer()->CopyFrom(toProto(frame));

proto::FfiResponse resp = FfiClient::instance().sendRequest(req);

if (!resp.has_video_convert()) {

throw std::runtime_error(

"convertViaFfi: FfiResponse missing video_convert");

}

const auto &vc_resp = resp.video_convert();

if (!vc_resp.error().empty()) {

throw std::runtime_error("convertViaFfi: " + vc_resp.error());

}

// vc_resp.buffer() is an OwnedVideoBuffer

return fromOwnedProto(vc_resp.buffer());

}

} // namespace livekit

client-sdk-cpp/src/video_utils.cpp at main · Sqhh99/client-sdk-cpp · GitHub

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