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Diffstat (limited to 'src/examples/sdl.h')
| -rw-r--r-- | src/examples/sdl.h | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/examples/sdl.h b/src/examples/sdl.h new file mode 100644 index 0000000..74ea74a --- /dev/null +++ b/src/examples/sdl.h @@ -0,0 +1,198 @@ +/* PipeWire + * + * Copyright © 2018 Wim Taymans + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +/* + [title] + SDL2 video format conversions + [title] + */ + +#include <SDL2/SDL.h> + +#include <spa/utils/type.h> +#include <spa/pod/builder.h> +#include <spa/param/video/raw.h> +#include <spa/param/video/format.h> + +static struct { + Uint32 format; + uint32_t id; +} sdl_video_formats[] = { +#if SDL_BYTEORDER == SDL_BIG_ENDIAN + { SDL_PIXELFORMAT_UNKNOWN, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_INDEX1LSB, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_UNKNOWN, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_INDEX1LSB, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_INDEX1MSB, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_INDEX4LSB, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_INDEX4MSB, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_INDEX8, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGB332, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGB444, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGB555, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_BGR555, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_ARGB4444, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGBA4444, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_ABGR4444, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_BGRA4444, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_ARGB1555, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGBA5551, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_ABGR1555, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_BGRA5551, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGB565, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_BGR565, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGB24, SPA_VIDEO_FORMAT_RGB,}, + { SDL_PIXELFORMAT_RGB888, SPA_VIDEO_FORMAT_RGB,}, + { SDL_PIXELFORMAT_RGBX8888, SPA_VIDEO_FORMAT_RGBx,}, + { SDL_PIXELFORMAT_BGR24, SPA_VIDEO_FORMAT_BGR,}, + { SDL_PIXELFORMAT_BGR888, SPA_VIDEO_FORMAT_BGR,}, + { SDL_PIXELFORMAT_BGRX8888, SPA_VIDEO_FORMAT_BGRx,}, + { SDL_PIXELFORMAT_ARGB2101010, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGBA8888, SPA_VIDEO_FORMAT_RGBA,}, + { SDL_PIXELFORMAT_ARGB8888, SPA_VIDEO_FORMAT_ARGB,}, + { SDL_PIXELFORMAT_BGRA8888, SPA_VIDEO_FORMAT_BGRA,}, + { SDL_PIXELFORMAT_ABGR8888, SPA_VIDEO_FORMAT_ABGR,}, + { SDL_PIXELFORMAT_YV12, SPA_VIDEO_FORMAT_YV12,}, + { SDL_PIXELFORMAT_IYUV, SPA_VIDEO_FORMAT_I420,}, + { SDL_PIXELFORMAT_YUY2, SPA_VIDEO_FORMAT_YUY2,}, + { SDL_PIXELFORMAT_UYVY, SPA_VIDEO_FORMAT_UYVY,}, + { SDL_PIXELFORMAT_YVYU, SPA_VIDEO_FORMAT_YVYU,}, +#if SDL_VERSION_ATLEAST(2,0,4) + { SDL_PIXELFORMAT_NV12, SPA_VIDEO_FORMAT_NV12,}, + { SDL_PIXELFORMAT_NV21, SPA_VIDEO_FORMAT_NV21,}, +#endif +#else + { SDL_PIXELFORMAT_UNKNOWN, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_INDEX1LSB, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_UNKNOWN, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_INDEX1LSB, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_INDEX1MSB, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_INDEX4LSB, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_INDEX4MSB, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_INDEX8, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGB332, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGB444, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGB555, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_BGR555, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_ARGB4444, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGBA4444, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_ABGR4444, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_BGRA4444, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_ARGB1555, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGBA5551, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_ABGR1555, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_BGRA5551, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGB565, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_BGR565, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGB24, SPA_VIDEO_FORMAT_BGR,}, + { SDL_PIXELFORMAT_RGB888, SPA_VIDEO_FORMAT_BGR,}, + { SDL_PIXELFORMAT_RGBX8888, SPA_VIDEO_FORMAT_xBGR,}, + { SDL_PIXELFORMAT_BGR24, SPA_VIDEO_FORMAT_RGB,}, + { SDL_PIXELFORMAT_BGR888, SPA_VIDEO_FORMAT_RGB,}, + { SDL_PIXELFORMAT_BGRX8888, SPA_VIDEO_FORMAT_xRGB,}, + { SDL_PIXELFORMAT_ARGB2101010, SPA_VIDEO_FORMAT_UNKNOWN,}, + { SDL_PIXELFORMAT_RGBA8888, SPA_VIDEO_FORMAT_ABGR,}, + { SDL_PIXELFORMAT_ARGB8888, SPA_VIDEO_FORMAT_BGRA,}, + { SDL_PIXELFORMAT_BGRA8888, SPA_VIDEO_FORMAT_ARGB,}, + { SDL_PIXELFORMAT_ABGR8888, SPA_VIDEO_FORMAT_RGBA,}, + { SDL_PIXELFORMAT_YV12, SPA_VIDEO_FORMAT_YV12,}, + { SDL_PIXELFORMAT_IYUV, SPA_VIDEO_FORMAT_I420,}, + { SDL_PIXELFORMAT_YUY2, SPA_VIDEO_FORMAT_YUY2,}, + { SDL_PIXELFORMAT_UYVY, SPA_VIDEO_FORMAT_UYVY,}, + { SDL_PIXELFORMAT_YVYU, SPA_VIDEO_FORMAT_YVYU,}, +#if SDL_VERSION_ATLEAST(2,0,4) + { SDL_PIXELFORMAT_NV12, SPA_VIDEO_FORMAT_NV12,}, + { SDL_PIXELFORMAT_NV21, SPA_VIDEO_FORMAT_NV21,}, +#endif +#endif +}; + +static inline uint32_t sdl_format_to_id(Uint32 format) +{ + SPA_FOR_EACH_ELEMENT_VAR(sdl_video_formats, f) { + if (f->format == format) + return f->id; + } + return SPA_VIDEO_FORMAT_UNKNOWN; +} + +static inline Uint32 id_to_sdl_format(uint32_t id) +{ + SPA_FOR_EACH_ELEMENT_VAR(sdl_video_formats, f) { + if (f->id == id) + return f->format; + } + return SDL_PIXELFORMAT_UNKNOWN; +} + +static inline struct spa_pod *sdl_build_formats(SDL_RendererInfo *info, struct spa_pod_builder *b) +{ + uint32_t i, c; + struct spa_pod_frame f[2]; + + /* make an object of type SPA_TYPE_OBJECT_Format and id SPA_PARAM_EnumFormat. + * The object type is important because it defines the properties that are + * acceptable. The id gives more context about what the object is meant to + * contain. In this case we enumerate supported formats. */ + spa_pod_builder_push_object(b, &f[0], SPA_TYPE_OBJECT_Format, SPA_PARAM_EnumFormat); + /* add media type and media subtype properties */ + spa_pod_builder_prop(b, SPA_FORMAT_mediaType, 0); + spa_pod_builder_id(b, SPA_MEDIA_TYPE_video); + spa_pod_builder_prop(b, SPA_FORMAT_mediaSubtype, 0); + spa_pod_builder_id(b, SPA_MEDIA_SUBTYPE_raw); + + /* build an enumeration of formats */ + spa_pod_builder_prop(b, SPA_FORMAT_VIDEO_format, 0); + spa_pod_builder_push_choice(b, &f[1], SPA_CHOICE_Enum, 0); + /* first the formats supported by the textures */ + for (i = 0, c = 0; i < info->num_texture_formats; i++) { + uint32_t id = sdl_format_to_id(info->texture_formats[i]); + if (id == 0) + continue; + if (c++ == 0) + spa_pod_builder_id(b, id); + spa_pod_builder_id(b, id); + } + /* then all the other ones SDL can convert from/to */ + SPA_FOR_EACH_ELEMENT_VAR(sdl_video_formats, f) { + uint32_t id = f->id; + if (id != SPA_VIDEO_FORMAT_UNKNOWN) + spa_pod_builder_id(b, id); + } + spa_pod_builder_id(b, SPA_VIDEO_FORMAT_RGBA_F32); + spa_pod_builder_pop(b, &f[1]); + /* add size and framerate ranges */ + spa_pod_builder_add(b, + SPA_FORMAT_VIDEO_size, SPA_POD_CHOICE_RANGE_Rectangle( + &SPA_RECTANGLE(WIDTH, HEIGHT), + &SPA_RECTANGLE(1,1), + &SPA_RECTANGLE(info->max_texture_width, + info->max_texture_height)), + SPA_FORMAT_VIDEO_framerate, SPA_POD_CHOICE_RANGE_Fraction( + &SPA_FRACTION(25,1), + &SPA_FRACTION(0,1), + &SPA_FRACTION(30,1)), + 0); + return spa_pod_builder_pop(b, &f[0]); +} |