NekoCWD/libcamera
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cam: sdl_sink: Add NV12 texture support

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Extend the SDL sink with support for NV12 textures, useful on platforms
that don't support packed YUYV formats.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Eric Curtin <ecurtin@redhat.com>
Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
This commit is contained in:
Laurent Pinchart 2022-08-06 17:35:56 +03:00
parent d4a42894b1
commit 7b8df9fe6b
3 changed files with 24 additions and 3 deletions
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5
src/cam/sdl_sink.cpp
View file

@ -67,6 +67,9 @@ int SDLSink::configure(const libcamera::CameraConfiguration &config)
texture_ = std::make_unique<SDLTextureMJPG>(rect_);
break;
#endif
case libcamera::formats::NV12:
texture_ = std::make_unique<SDLTextureNV12>(rect_, cfg.stride);
break;
case libcamera::formats::YUYV:
texture_ = std::make_unique<SDLTextureYUYV>(rect_, cfg.stride);
break;
@ -188,7 +191,7 @@ void SDLSink::renderBuffer(FrameBuffer *buffer)
std::vector<Span<const uint8_t>> planes;
unsigned int i = 0;
planes.reserve(buffer->metadata()->planes().size());
planes.reserve(buffer->metadata().planes().size());
for (const FrameMetadata::Plane &meta : buffer->metadata().planes()) {
Span<uint8_t> data = image->data(i);

13
src/cam/sdl_texture_yuv.cpp
View file

@ -2,13 +2,24 @@
/*
* Copyright (C) 2022, Ideas on Board Oy
*
* sdl_texture_yuv.cpp - SDL Texture YUYV
* sdl_texture_yuv.cpp - SDL YUV Textures
*/
#include "sdl_texture_yuv.h"
using namespace libcamera;
SDLTextureNV12::SDLTextureNV12(const SDL_Rect &rect, unsigned int stride)
: SDLTexture(rect, SDL_PIXELFORMAT_NV12, stride)
{
}
void SDLTextureNV12::update(const std::vector<libcamera::Span<const uint8_t>> &data)
{
SDL_UpdateNVTexture(ptr_, &rect_, data[0].data(), pitch_,
data[1].data(), pitch_);
}
SDLTextureYUYV::SDLTextureYUYV(const SDL_Rect &rect, unsigned int stride)
: SDLTexture(rect, SDL_PIXELFORMAT_YUY2, stride)
{

9
src/cam/sdl_texture_yuv.h
View file

@ -2,13 +2,20 @@
/*
* Copyright (C) 2022, Ideas on Board Oy
*
* sdl_texture_yuv.h - SDL Texture YUYV
* sdl_texture_yuv.h - SDL YUV Textures
*/
#pragma once
#include "sdl_texture.h"
class SDLTextureNV12 : public SDLTexture
{
public:
SDLTextureNV12(const SDL_Rect &rect, unsigned int stride);
void update(const std::vector<libcamera::Span<const uint8_t>> &data) override;
};
class SDLTextureYUYV : public SDLTexture
{
public: