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cs: implement TakeScreenShot command

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This commit is contained in:
Michael Scire 2021-07-28 17:38:31 -07:00 committed by SciresM
parent 8acf0a4fa9
commit 0ec23e74b5
6 changed files with 152 additions and 1 deletions
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4
libraries/libstratosphere/include/stratosphere/capsrv/capsrv_screen_shot_control_api.hpp
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@ -25,6 +25,10 @@ namespace ams::capsrv {
Result InitializeScreenShotControl();
void FinalizeScreenShotControl();
Result OpenRawScreenShotReadStreamForDevelop(size_t *out_data_size, s32 *out_width, s32 *out_height, vi::LayerStack layer_stack, TimeSpan timeout);
Result ReadRawScreenShotReadStreamForDevelop(size_t *out_read_size, void *dst, size_t dst_size, std::ptrdiff_t offset);
void CloseRawScreenShotReadStreamForDevelop();
Result CaptureJpegScreenshot(u64 *out_size, void *dst, size_t dst_size, vi::LayerStack layer_stack, TimeSpan timeout);
}

3
libraries/libstratosphere/include/stratosphere/cs/cs_command_processor.hpp
View file

@ -16,6 +16,7 @@
#pragma once
#include <vapours.hpp>
#include <stratosphere/scs/scs_command_processor.hpp>
#include <stratosphere/vi/vi_layer_stack.hpp>
namespace ams::cs {
@ -25,6 +26,8 @@ namespace ams::cs {
class CommandProcessor : public scs::CommandProcessor {
public:
virtual bool ProcessCommand(const CommandHeader &header, const u8 *body, s32 socket) override;
private:
void TakeScreenShot(const CommandHeader &header, s32 socket, vi::LayerStack layer_stack);
private:
static void SendFirmwareVersion(s32 socket, const CommandHeader &header);
};

23
libraries/libstratosphere/source/capsrv/capsrv_screen_shot_control_api.cpp
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@ -29,4 +29,27 @@ namespace ams::capsrv {
return ::capsscCaptureJpegScreenShot(out_size, dst, dst_size, static_cast<::ViLayerStack>(layer_stack), timeout.GetNanoSeconds());
}
Result OpenRawScreenShotReadStreamForDevelop(size_t *out_data_size, s32 *out_width, s32 *out_height, vi::LayerStack layer_stack, TimeSpan timeout) {
u64 data_size, width, height;
R_TRY(::capsscOpenRawScreenShotReadStream(std::addressof(data_size), std::addressof(width), std::addressof(height), static_cast<::ViLayerStack>(layer_stack), timeout.GetNanoSeconds()));
*out_data_size = static_cast<size_t>(data_size);
*out_width = static_cast<s32>(width);
*out_height = static_cast<s32>(height);
return ResultSuccess();
}
Result ReadRawScreenShotReadStreamForDevelop(size_t *out_read_size, void *dst, size_t dst_size, std::ptrdiff_t offset) {
u64 read_size;
R_TRY(::capsscReadRawScreenShotReadStream(std::addressof(read_size), dst, dst_size, static_cast<u64>(offset)));
*out_read_size = static_cast<size_t>(read_size);
return ResultSuccess();
}
void CloseRawScreenShotReadStreamForDevelop() {
::capsscCloseRawScreenShotReadStream();
}
}

56
libraries/libstratosphere/source/cs/cs_command_impl.cpp
View file

@ -18,9 +18,65 @@
namespace ams::cs {
namespace {
void SendEmptyData(const CommandDataTakeScreenShot &params, size_t remaining_size) {
/* Clear the data buffer. */
std::memset(params.buffer, 0, params.buffer_size);
/* Send data until the end. */
while (remaining_size > 0) {
/* Send as much as we can. */
const auto cur_size = std::min(remaining_size, params.buffer_size);
params.send_data(params.buffer, cur_size);
/* Advance. */
remaining_size -= cur_size;
}
}
}
Result DoGetFirmwareVersionCommand(settings::system::FirmwareVersion *out) {
settings::system::GetFirmwareVersion(out);
return ResultSuccess();
}
Result DoTakeScreenShotCommand(const CommandDataTakeScreenShot &params) {
/* Initialize screenshot control. */
R_TRY(capsrv::InitializeScreenShotControl());
/* Finalize screenshot control when we're done. */
ON_SCOPE_EXIT { capsrv::FinalizeScreenShotControl(); };
/* Open screenshot read stream. */
size_t data_size;
s32 width, height;
R_TRY(capsrv::OpenRawScreenShotReadStreamForDevelop(std::addressof(data_size), std::addressof(width), std::addressof(height), params.layer_stack, TimeSpan::FromSeconds(10)));
/* Close the screenshot stream when we're done. */
ON_SCOPE_EXIT { capsrv::CloseRawScreenShotReadStreamForDevelop(); };
/* Send the header. */
params.send_header(static_cast<s32>(data_size), width, height);
/* Read and send data. */
size_t total_read_size = 0;
auto data_guard = SCOPE_GUARD { SendEmptyData(params, data_size - total_read_size); };
while (total_read_size < data_size) {
/* Read data from the stream. */
size_t read_size;
R_TRY(capsrv::ReadRawScreenShotReadStreamForDevelop(std::addressof(read_size), params.buffer, params.buffer_size, total_read_size));
/* Send the data that was read. */
params.send_data(params.buffer, read_size);
/* Advance. */
total_read_size += read_size;
}
data_guard.Cancel();
return ResultSuccess();
}
}

10
libraries/libstratosphere/source/cs/cs_command_impl.hpp
View file

@ -18,6 +18,16 @@
namespace ams::cs {
struct CommandDataTakeScreenShot {
vi::LayerStack layer_stack;
std::function<void (s32, s32, s32)> send_header;
std::function<void (u8 *, size_t)> send_data;
u8 *buffer;
size_t buffer_size;
};
Result DoGetFirmwareVersionCommand(settings::system::FirmwareVersion *out);
Result DoTakeScreenShotCommand(const CommandDataTakeScreenShot &params);
}

57
libraries/libstratosphere/source/cs/cs_command_processor.cpp
View file

@ -25,6 +25,15 @@ namespace ams::cs {
settings::system::FirmwareVersion firmware_version;
};
struct ResponseTakeScreenShot {
ResponseHeader header;
s32 data_size;
s32 width;
s32 height;
};
constinit u8 g_data[0x1000];
}
bool CommandProcessor::ProcessCommand(const CommandHeader &header, const u8 *body, s32 socket) {
@ -32,7 +41,12 @@ namespace ams::cs {
case Command_GetFirmwareVersion:
SendFirmwareVersion(socket, header);
break;
/* TODO: Command support. */
case Command_TakeScreenShot:
this->TakeScreenShot(header, socket, vi::LayerStack_ApplicationForDebug);
break;
case Command_TakeForegroundScreenShot:
this->TakeScreenShot(header, socket, vi::LayerStack_LastFrame);
break;
/* TODO: Command support. */
default:
scs::CommandProcessor::ProcessCommand(header, body, socket);
@ -64,4 +78,45 @@ namespace ams::cs {
}
}
void CommandProcessor::TakeScreenShot(const CommandHeader &header, s32 socket, vi::LayerStack layer_stack) {
/* Create the command data. */
const CommandDataTakeScreenShot params = {
.layer_stack = layer_stack,
.send_header = [&](s32 data_size, s32 width, s32 height) {
/* Use global buffer for response. */
ResponseTakeScreenShot *response = reinterpret_cast<ResponseTakeScreenShot *>(g_data);
/* Set response header. */
*response = {
.header = {
.id = header.id,
.response = Response_ScreenShot,
.body_size = static_cast<u32>(sizeof(data_size) + sizeof(width) + sizeof(height) + data_size),
},
.data_size = data_size,
.width = width,
.height = height,
};
/* Send data. */
Send(socket, response, sizeof(*response));
},
.send_data = [&](u8 *data, size_t data_size) {
/* Send data. */
Send(socket, data, data_size);
},
.buffer = g_data,
.buffer_size = sizeof(g_data),
};
/* Acquire the send lock. */
auto lk = MakeSendGuardBlock();
/* Take the screenshot. */
const Result result = DoTakeScreenShotCommand(params);
if (R_FAILED(result)) {
SendErrorResult(socket, header, result);
}
}
}