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| -rw-r--r-- | .gitignore | 5 | ||||
| -rw-r--r-- | LICENSE | 674 | ||||
| -rw-r--r-- | decode.c | 419 | ||||
| -rw-r--r-- | decode.h | 32 | ||||
| -rw-r--r-- | frame.c | 68 | ||||
| -rw-r--r-- | frame.h | 43 | ||||
| -rw-r--r-- | main.c | 95 | ||||
| -rw-r--r-- | makefile | 42 | ||||
| -rw-r--r-- | util.h | 44 | ||||
| -rw-r--r-- | window.c | 338 | ||||
| -rw-r--r-- | window.h | 32 |
11 files changed, 1792 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..4e2021d --- /dev/null +++ b/.gitignore @@ -0,0 +1,5 @@ +*.o +.clang-format +compile_commands.json +compile_flags.txt +receiver @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. 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Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +<https://www.gnu.org/licenses/>. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +<https://www.gnu.org/licenses/why-not-lgpl.html>. diff --git a/decode.c b/decode.c new file mode 100644 index 0000000..f51fd83 --- /dev/null +++ b/decode.c @@ -0,0 +1,419 @@ +/* + * Copyright (C) 2023 Mikhail Burakov. This file is part of receiver. + * + * receiver is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * receiver is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with receiver. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "decode.h" + +#include <errno.h> +#include <fcntl.h> +#include <mfxvideo.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <va/va.h> +#include <va/va_drm.h> +#include <va/va_drmcommon.h> + +#include "frame.h" +#include "util.h" + +struct Surface { + VASurfaceID surface_id; + mfxFrameInfo frame_info; + struct Frame* frame; + bool locked; +}; + +struct DecodeContext { + int drm_fd; + VADisplay display; + mfxSession session; + mfxFrameAllocator allocator; + bool initialized; + + uint32_t packet_size; + uint8_t* packet_data; + uint32_t packet_alloc; + uint32_t packet_offset; + struct Surface** sufaces; + struct Frame* decoded; +}; + +static void SurfaceDestroy(struct Surface*** psurfaces) { + if (!psurfaces || !*psurfaces) return; + for (struct Surface** surfaces = *psurfaces; *surfaces; surfaces++) { + if ((*surfaces)->frame) FrameDestroy(&(*surfaces)->frame); + free(*surfaces); + } + free(*psurfaces); + *psurfaces = NULL; +} + +static struct Frame* ExportFrame(VADisplay display, VASurfaceID surface_id) { + VADRMPRIMESurfaceDescriptor prime; + VAStatus status = vaExportSurfaceHandle( + display, surface_id, VA_SURFACE_ATTRIB_MEM_TYPE_DRM_PRIME_2, + VA_EXPORT_SURFACE_WRITE_ONLY | VA_EXPORT_SURFACE_COMPOSED_LAYERS, &prime); + if (status != VA_STATUS_SUCCESS) { + LOG("Failed to export vaapi surface (%d)", status); + return NULL; + } + + struct FramePlane planes[prime.layers[0].num_planes]; + for (size_t i = 0; i < LENGTH(planes); i++) { + planes[i] = (struct FramePlane){ + .dmabuf_fd = prime.objects[prime.layers[0].object_index[i]].fd, + .pitch = prime.layers[0].pitch[i], + .offset = prime.layers[0].offset[i], + .modifier = + prime.objects[prime.layers[0].object_index[i]].drm_format_modifier, + }; + } + + struct Frame* frame = FrameCreate(prime.width, prime.height, prime.fourcc, + prime.layers[0].num_planes, planes); + if (!frame) LOG("Failed to create frame"); + for (size_t i = prime.num_objects; i; i--) close(prime.objects[i - 1].fd); + return frame; +} + +static mfxStatus OnAllocatorAlloc(mfxHDL pthis, mfxFrameAllocRequest* request, + mfxFrameAllocResponse* response) { + LOG("%s(AllocId=%u, NumFrameSuggested=%u)", __func__, request->AllocId, + request->NumFrameSuggested); + if (request->Info.FourCC != MFX_FOURCC_NV12) { + LOG("Allocation of %.4s surfaces is not supported", + (const char*)&request->Info.FourCC); + return MFX_ERR_UNSUPPORTED; + } + if (request->Info.ChromaFormat != MFX_CHROMAFORMAT_YUV420) { + LOG("Chroma format %u is not supported", request->Info.ChromaFormat); + return MFX_ERR_UNSUPPORTED; + } + + struct AUTO(Surface)** surfaces = + calloc(request->NumFrameSuggested + 1, sizeof(struct Surface*)); + if (!surfaces) { + LOG("Failed to allocate surfaces storage (%s)", strerror(errno)); + return MFX_ERR_MEMORY_ALLOC; + } + for (size_t i = 0; i < request->NumFrameSuggested; i++) { + surfaces[i] = calloc(1, sizeof(struct Surface)); + if (!surfaces[i]) { + LOG("Failed to allocate surface (%s)", strerror(errno)); + return MFX_ERR_MEMORY_ALLOC; + } + } + + VASurfaceID surface_ids[request->NumFrameSuggested]; + struct DecodeContext* decode_context = pthis; + VASurfaceAttrib attrib_list[] = { + {.type = VASurfaceAttribPixelFormat, + .value.type = VAGenericValueTypeInteger, + .value.value.i = VA_FOURCC_NV12}, + {.type = VASurfaceAttribUsageHint, + .value.type = VAGenericValueTypeInteger, + .value.value.i = VA_SURFACE_ATTRIB_USAGE_HINT_DECODER | + VA_SURFACE_ATTRIB_USAGE_HINT_EXPORT}, + }; + VAStatus status = vaCreateSurfaces( + decode_context->display, VA_RT_FORMAT_YUV420, request->Info.Width, + request->Info.Height, surface_ids, request->NumFrameSuggested, + attrib_list, LENGTH(attrib_list)); + if (status != VA_STATUS_SUCCESS) { + LOG("Failed to allocate surfaces (%d)", status); + return MFX_ERR_MEMORY_ALLOC; + } + + for (size_t i = 0; i < request->NumFrameSuggested; i++) { + surfaces[i]->surface_id = surface_ids[i]; + surfaces[i]->frame_info = request->Info; + } + + // mburakov: Separate loop for frames to ensure proper cleanup in destructor. + for (size_t i = 0; i < request->NumFrameSuggested; i++) { + surfaces[i]->frame = + ExportFrame(decode_context->display, surfaces[i]->surface_id); + if (!surfaces[i]->frame) { + LOG("Failed to export frame"); + return MFX_ERR_MEMORY_ALLOC; + } + } + + decode_context->sufaces = RELEASE(surfaces); + *response = (mfxFrameAllocResponse){ + .AllocId = request->AllocId, + .mids = (void**)decode_context->sufaces, + .NumFrameActual = request->NumFrameSuggested, + }; + return MFX_ERR_NONE; +} + +static mfxStatus OnAllocatorGetHDL(mfxHDL pthis, mfxMemId mid, mfxHDL* handle) { + (void)pthis; + struct Surface* surface = mid; + *handle = &surface->surface_id; + return MFX_ERR_NONE; +} + +static mfxStatus OnAllocatorFree(mfxHDL pthis, + mfxFrameAllocResponse* response) { + LOG("%s(AllocId=%u)", __func__, response->AllocId); + VASurfaceID surface_ids[response->NumFrameActual]; + struct Surface** surfaces = (struct Surface**)response->mids; + for (size_t i = 0; i < response->NumFrameActual; i++) + surface_ids[i] = surfaces[i]->surface_id; + struct DecodeContext* decode_context = pthis; + vaDestroySurfaces(decode_context->display, surface_ids, + response->NumFrameActual); + SurfaceDestroy(&decode_context->sufaces); + return MFX_ERR_NONE; +} + +struct DecodeContext* DecodeContextCreate(void) { + struct AUTO(DecodeContext)* decode_context = + malloc(sizeof(struct DecodeContext)); + if (!decode_context) { + LOG("Failed to allocate decode context (%s)", strerror(errno)); + return NULL; + } + *decode_context = (struct DecodeContext){ + .drm_fd = -1, + .allocator.pthis = decode_context, + .allocator.Alloc = OnAllocatorAlloc, + .allocator.GetHDL = OnAllocatorGetHDL, + .allocator.Free = OnAllocatorFree, + }; + + decode_context->drm_fd = open("/dev/dri/renderD128", O_RDWR); + if (decode_context->drm_fd == -1) { + LOG("Failed to open render node (%s)", strerror(errno)); + return NULL; + } + + decode_context->display = vaGetDisplayDRM(decode_context->drm_fd); + if (!decode_context->display) { + LOG("Failed to get vaapi display (%s)", strerror(errno)); + return NULL; + } + int major, minor; + VAStatus st = vaInitialize(decode_context->display, &major, &minor); + if (st != VA_STATUS_SUCCESS) { + LOG("Failed to init vaapi (%d)", st); + return NULL; + } + + LOG("Initialized vaapi %d.%d", major, minor); + mfxStatus status = MFXInit(MFX_IMPL_HARDWARE, NULL, &decode_context->session); + if (status != MFX_ERR_NONE) { + LOG("Failed to init mfx session (%d)", status); + return NULL; + } + status = MFXVideoCORE_SetHandle( + decode_context->session, MFX_HANDLE_VA_DISPLAY, decode_context->display); + if (status != MFX_ERR_NONE) { + LOG("Failed to set mfx session display (%d)", status); + return NULL; + } + status = MFXVideoCORE_SetFrameAllocator(decode_context->session, + &decode_context->allocator); + if (status != MFX_ERR_NONE) { + LOG("Failed to set frame allocator (%d)", status); + return NULL; + } + return RELEASE(decode_context); +} + +static bool InitializeDecoder(struct DecodeContext* decode_context, + mfxBitstream* bitstream) { + mfxVideoParam video_param = { + .mfx.CodecId = MFX_CODEC_AVC, + }; + mfxStatus status = MFXVideoDECODE_DecodeHeader(decode_context->session, + bitstream, &video_param); + switch (status) { + case MFX_ERR_NONE: + break; + case MFX_ERR_MORE_DATA: + return true; + default: + LOG("Failed to parse decode header (%d)", status); + return false; + } + + video_param.AsyncDepth = 1; + video_param.mfx.DecodedOrder = 1; + video_param.IOPattern = MFX_IOPATTERN_OUT_VIDEO_MEMORY; + status = + MFXVideoDECODE_Query(decode_context->session, &video_param, &video_param); + if (status != MFX_ERR_NONE) { + LOG("Failed to query decode (%d)", status); + return false; + } + + status = MFXVideoDECODE_Init(decode_context->session, &video_param); + if (status != MFX_ERR_NONE) { + LOG("Failed to init decode (%d)", status); + return false; + } + decode_context->initialized = true; + return true; +} + +static bool ReadSomePacketData(struct DecodeContext* decode_context, int fd) { +again:; + void* target; + size_t size; + if (!decode_context->packet_size) { + target = &decode_context->packet_size; + size = sizeof(decode_context->packet_size); + } else { + target = decode_context->packet_data + decode_context->packet_offset; + size = decode_context->packet_size - decode_context->packet_offset; + } + ssize_t result = read(fd, target, size); + switch (result) { + case -1: + if (errno == EINTR) goto again; + LOG("Failed to read packet data (%s)", strerror(errno)); + return false; + case 0: + LOG("File descriptor was closed"); + return false; + default: + break; + } + if (target != &decode_context->packet_size) { + decode_context->packet_offset += result; + return true; + } + if (result != (ssize_t)size) { + LOG("Failed to read complete packet size"); + return false; + } + if (decode_context->packet_size > decode_context->packet_alloc) { + uint32_t packet_alloc = decode_context->packet_size; + uint8_t* packet_data = malloc(packet_alloc); + if (!packet_data) { + LOG("Failed to reallocate packet data (%s)", strerror(errno)); + return false; + } + free(decode_context->packet_data); + decode_context->packet_data = packet_data; + decode_context->packet_alloc = packet_alloc; + } + return true; +} + +static struct Surface* GetFreeSurface(struct DecodeContext* decode_context) { + struct Surface** psurface = decode_context->sufaces; + for (; *psurface && (*psurface)->locked; psurface++) + ; + (*psurface)->locked = true; + return *psurface; +} + +static void UnlockAllSurfaces(struct DecodeContext* decode_context, + const struct Surface* keep_locked) { + struct Surface** psurface = decode_context->sufaces; + for (; *psurface; psurface++) { + if (*psurface != keep_locked) (*psurface)->locked = false; + } +} + +bool DecodeContextDecode(struct DecodeContext* decode_context, int fd) { + if (!ReadSomePacketData(decode_context, fd)) { + LOG("Failed to read some packet data"); + return false; + } + + if (decode_context->packet_size != decode_context->packet_offset) { + // mburakov: Full frame has to be available for decoding. + return true; + } + mfxBitstream bitstream = { + .DecodeTimeStamp = MFX_TIMESTAMP_UNKNOWN, + .TimeStamp = (mfxU64)MFX_TIMESTAMP_UNKNOWN, + .Data = decode_context->packet_data, + .DataLength = decode_context->packet_size, + .MaxLength = decode_context->packet_size, + .DataFlag = MFX_BITSTREAM_COMPLETE_FRAME, + }; + decode_context->packet_size = 0; + decode_context->packet_offset = 0; + + if (!decode_context->initialized) { + if (!InitializeDecoder(decode_context, &bitstream)) { + LOG("Failed to initialize decoder"); + return false; + } + // mburakov: Initialization might be postponed. + if (!decode_context->initialized) return true; + } + + for (;;) { + struct Surface* surface = GetFreeSurface(decode_context); + mfxFrameSurface1 surface_work = { + .Info = surface->frame_info, + .Data.MemId = surface, + }; + mfxFrameSurface1* surface_out = NULL; + mfxSyncPoint sync = NULL; + mfxStatus status = + MFXVideoDECODE_DecodeFrameAsync(decode_context->session, &bitstream, + &surface_work, &surface_out, &sync); + switch (status) { + case MFX_ERR_MORE_SURFACE: + continue; + case MFX_ERR_NONE: + break; + case MFX_WRN_VIDEO_PARAM_CHANGED: + continue; + default: + LOG("Failed to decode frame (%d)", status); + return false; + } + + status = + MFXVideoCORE_SyncOperation(decode_context->session, sync, MFX_INFINITE); + if (status != MFX_ERR_NONE) { + LOG("Failed to sync operation (%d)", status); + return false; + } + + surface = surface_out->Data.MemId; + decode_context->decoded = surface->frame; + UnlockAllSurfaces(decode_context, surface); + return true; + } +} + +const struct Frame* DecodeContextGetFrame( + struct DecodeContext* decode_context) { + return decode_context->decoded; +} + +void DecodeContextDestroy(struct DecodeContext** decode_context) { + if (!decode_context || !*decode_context) return; + if ((*decode_context)->packet_data) free((*decode_context)->packet_data); + if ((*decode_context)->session) MFXClose((*decode_context)->session); + if ((*decode_context)->display) vaTerminate((*decode_context)->display); + if ((*decode_context)->drm_fd) close((*decode_context)->drm_fd); + free(*decode_context); + *decode_context = NULL; +} diff --git a/decode.h b/decode.h new file mode 100644 index 0000000..6926091 --- /dev/null +++ b/decode.h @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2023 Mikhail Burakov. This file is part of receiver. + * + * receiver is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * receiver is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with receiver. If not, see <https://www.gnu.org/licenses/>. + */ + +#ifndef RECEIVER_DECODE_H_ +#define RECEIVER_DECODE_H_ + +#include <stdbool.h> +#include <stddef.h> + +struct DecodeContext; +struct Frame; + +struct DecodeContext* DecodeContextCreate(void); +bool DecodeContextDecode(struct DecodeContext* decode_context, int fd); +const struct Frame* DecodeContextGetFrame(struct DecodeContext* decode_context); +void DecodeContextDestroy(struct DecodeContext** decode_context); + +#endif // RECEIVER_DECODE_H_ @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2023 Mikhail Burakov. This file is part of receiver. + * + * receiver is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * receiver is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with receiver. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "frame.h" + +#include <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "util.h" + +struct Frame* FrameCreate(uint32_t width, uint32_t height, uint32_t fourcc, + size_t nplanes, const struct FramePlane* planes) { + struct AUTO(Frame)* frame = malloc(sizeof(struct Frame)); + if (!frame) { + LOG("Failed to allocate frame (%s)", strerror(errno)); + return NULL; + } + *frame = (struct Frame){ + .width = width, + .height = height, + .fourcc = fourcc, + .nplanes = nplanes, + .planes[0] = {.dmabuf_fd = -1, .pitch = 0, .offset = 0, .modifier = 0}, + .planes[1] = {.dmabuf_fd = -1, .pitch = 0, .offset = 0, .modifier = 0}, + .planes[2] = {.dmabuf_fd = -1, .pitch = 0, .offset = 0, .modifier = 0}, + .planes[3] = {.dmabuf_fd = -1, .pitch = 0, .offset = 0, .modifier = 0}, + }; + + for (size_t i = 0; i < nplanes; i++) { + frame->planes[i] = (struct FramePlane){ + .dmabuf_fd = dup(planes[i].dmabuf_fd), + .pitch = planes[i].pitch, + .offset = planes[i].offset, + .modifier = planes[i].modifier, + }; + if (frame->planes[i].dmabuf_fd == -1) { + LOG("Failed to dup dmabuf fd (%s)", strerror(errno)); + return NULL; + } + } + + return RELEASE(frame); +} + +void FrameDestroy(struct Frame** frame) { + if (!frame || !*frame) return; + for (size_t i = (*frame)->nplanes; i; i--) { + if ((*frame)->planes[i].dmabuf_fd != -1) + close((*frame)->planes[i].dmabuf_fd); + } +} @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2023 Mikhail Burakov. This file is part of receiver. + * + * receiver is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * receiver is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with receiver. If not, see <https://www.gnu.org/licenses/>. + */ + +#ifndef RECEIVER_FRAME_H_ +#define RECEIVER_FRAME_H_ + +#include <stddef.h> +#include <stdint.h> + +struct FramePlane { + int dmabuf_fd; + uint32_t pitch; + uint32_t offset; + uint64_t modifier; +}; + +struct Frame { + uint32_t width; + uint32_t height; + uint32_t fourcc; + size_t nplanes; + struct FramePlane planes[4]; +}; + +struct Frame* FrameCreate(uint32_t width, uint32_t height, uint32_t fourcc, + size_t nplanes, const struct FramePlane* planes); +void FrameDestroy(struct Frame** frame); + +#endif // RECEIVER_FRAME_H_ @@ -0,0 +1,95 @@ +/* + * Copyright (C) 2023 Mikhail Burakov. This file is part of receiver. + * + * receiver is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * receiver is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with receiver. If not, see <https://www.gnu.org/licenses/>. + */ + +#include <errno.h> +#include <poll.h> +#include <signal.h> +#include <stddef.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "decode.h" +#include "util.h" +#include "window.h" + +static volatile sig_atomic_t g_signal; +static void OnSignal(int status) { g_signal = status; } + +int main(int argc, char* argv[]) { + (void)argc; + (void)argv; + + struct AUTO(DecodeContext)* decode_context = DecodeContextCreate(); + if (!decode_context) { + LOG("Failed to create decode context"); + return EXIT_FAILURE; + } + + struct AUTO(Window)* window = WindowCreate(); + if (!window) { + LOG("Failed to create window"); + return EXIT_FAILURE; + } + + int events_fd = WindowGetEventsFd(window); + if (events_fd == -1) { + LOG("Failed to get events fd"); + return EXIT_FAILURE; + } + + if (signal(SIGINT, OnSignal) == SIG_ERR || + signal(SIGTERM, OnSignal) == SIG_ERR) { + LOG("Failed to set signal handlers (%s)", strerror(errno)); + return EXIT_FAILURE; + } + + while (!g_signal) { + struct pollfd pfds[] = { + {.fd = STDIN_FILENO, .events = POLLIN}, + {.fd = events_fd, .events = POLLIN}, + }; + switch (poll(pfds, LENGTH(pfds), -1)) { + case -1: + if (errno != EINTR) { + LOG("Failed to poll (%s)", strerror(errno)); + return EXIT_FAILURE; + } + __attribute__((fallthrough)); + case 0: + continue; + default: + break; + } + if (pfds[0].revents && !DecodeContextDecode(decode_context, STDIN_FILENO)) { + LOG("Failed to decode incoming data"); + return EXIT_FAILURE; + } + if (pfds[1].revents && !WindowProcessEvents(window)) { + LOG("Failed to process window events"); + return EXIT_FAILURE; + } + const struct Frame* frame = DecodeContextGetFrame(decode_context); + if (frame && !WindowRenderFrame(window, frame)) { + LOG("Failed to render frame"); + return EXIT_FAILURE; + } + } + + return EXIT_SUCCESS; +} diff --git a/makefile b/makefile new file mode 100644 index 0000000..24bc614 --- /dev/null +++ b/makefile @@ -0,0 +1,42 @@ +bin:=$(notdir $(shell pwd)) +src:=$(wildcard *.c) +obj:=$(src:.c=.o) + +libs:=\ + libva \ + libva-drm \ + mfx \ + wayland-client + +protocols_dir:=\ + /usr/share/wayland-protocols + +protocols:=\ + linux-dmabuf-unstable-v1 \ + xdg-shell + +obj:=$(patsubst %,%.o,$(protocols)) $(obj) +headers:=$(patsubst %,%.h,$(protocols)) +CFLAGS+=$(shell pkg-config --cflags $(libs)) +LDFLAGS+=$(shell pkg-config --libs $(libs)) + +all: $(bin) + +$(bin): $(obj) + $(CC) $^ $(LDFLAGS) -o $@ + +%.o: %.c *.h $(headers) + $(CC) -c $< $(CFLAGS) -o $@ + +%.h: $(protocols_dir)/*/*/%.xml + wayland-scanner client-header $< $@ + +%.c: $(protocols_dir)/*/*/%.xml + wayland-scanner private-code $< $@ + +clean: + -rm $(bin) $(obj) $(headers) + +.PHONY: all clean + +.PRECIOUS: $(headers) @@ -0,0 +1,44 @@ +/* + * Copyright (C) 2023 Mikhail Burakov. This file is part of receiver. + * + * receiver is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * receiver is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with receiver. If not, see <https://www.gnu.org/licenses/>. + */ + +#ifndef RECEIVER_UTIL_H_ +#define RECEIVER_UTIL_H_ + +#define STR_IMPL(x) #x +#define STR(x) STR_IMPL(x) +#define LOG(fmt, ...) \ + fprintf(stderr, __FILE__ ":" STR(__LINE__) " " fmt "\n", ##__VA_ARGS__) +#define AUTO(x) x __attribute__((__cleanup__(x##Destroy))) +#define SWAP(a, b) Swap((void**)&a, (void**)&b) +#define RELEASE(x) Release((void**)&x) +#define LENGTH(x) (sizeof(x) / sizeof *(x)) +#define MAX(a, b) ((a) > (b) ? (a) : (b)) +#define MIN(a, b) ((a) < (b) ? (a) : (b)) + +static inline void Swap(void** a, void** b) { + void* temp = *a; + *a = *b; + *b = temp; +} + +static inline void* Release(void** x) { + void* result = *x; + *x = 0; + return result; +} + +#endif // RECEIVER_UTIL_H_ diff --git a/window.c b/window.c new file mode 100644 index 0000000..610fe85 --- /dev/null +++ b/window.c @@ -0,0 +1,338 @@ +/* + * Copyright (C) 2023 Mikhail Burakov. This file is part of receiver. + * + * receiver is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * receiver is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with receiver. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "window.h" + +#include <errno.h> +#include <signal.h> +#include <stddef.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <wayland-client.h> + +#include "frame.h" +#include "linux-dmabuf-unstable-v1.h" +#include "util.h" +#include "xdg-shell.h" + +struct Window { + struct wl_display* wl_display; + struct wl_surface* wl_surface; + struct xdg_wm_base* xdg_wm_base; + struct zwp_linux_dmabuf_v1* zwp_linux_dmabuf_v1; + struct xdg_surface* xdg_surface; + struct xdg_toplevel* xdg_toplevel; + struct wl_buffer* wl_buffer; +}; + +static void wl_registryDestroy(struct wl_registry** wl_registry) { + if (!wl_registry || !*wl_registry) return; + wl_registry_destroy(*wl_registry); + *wl_registry = NULL; +} + +static void wl_compositorDestroy(struct wl_compositor** wl_compositor) { + if (!wl_compositor || !*wl_compositor) return; + wl_compositor_destroy(*wl_compositor); + *wl_compositor = NULL; +} + +static void xdg_wm_baseDestroy(struct xdg_wm_base** xdg_wm_base) { + if (!xdg_wm_base || !*xdg_wm_base) return; + xdg_wm_base_destroy(*xdg_wm_base); + *xdg_wm_base = NULL; +} + +static void zwp_linux_buffer_params_v1Destroy( + struct zwp_linux_buffer_params_v1** zwp_linux_buffer_params_v1) { + if (!zwp_linux_buffer_params_v1 || !*zwp_linux_buffer_params_v1) return; + zwp_linux_buffer_params_v1_destroy(*zwp_linux_buffer_params_v1); + *zwp_linux_buffer_params_v1 = NULL; +} + +static void wl_bufferDestroy(struct wl_buffer** wl_buffer) { + if (!wl_buffer || !*wl_buffer) return; + wl_buffer_destroy(*wl_buffer); + *wl_buffer = NULL; +} + +static void OnWmBasePing(void* data, struct xdg_wm_base* xdg_wm_base, + uint32_t serial) { + (void)data; + xdg_wm_base_pong(xdg_wm_base, serial); +} + +static void OnRegistryGlobal(void* data, struct wl_registry* registry, + uint32_t name, const char* interface, + uint32_t version) { + struct Window* window = data; + if (!strcmp(interface, wl_compositor_interface.name)) { + struct AUTO(wl_compositor)* compositor = + wl_registry_bind(registry, name, &wl_compositor_interface, version); + if (!compositor) { + LOG("Failed to bind wayland compositor (%s)", strerror(errno)); + return; + } + window->wl_surface = wl_compositor_create_surface(compositor); + if (!window->wl_surface) { + LOG("Failed to create wayland surface (%s)", strerror(errno)); + return; + } + } else if (!strcmp(interface, xdg_wm_base_interface.name)) { + struct AUTO(xdg_wm_base)* xdg_wm_base = + wl_registry_bind(registry, name, &xdg_wm_base_interface, version); + if (!xdg_wm_base) { + LOG("Failed to bind wayland xdg_wm_base (%s)", strerror(errno)); + return; + } + static const struct xdg_wm_base_listener wm_base_listener = { + .ping = OnWmBasePing, + }; + if (xdg_wm_base_add_listener(xdg_wm_base, &wm_base_listener, NULL)) { + LOG("Failed to add wayland wm base listener (%s)", strerror(errno)); + return; + } + window->xdg_wm_base = RELEASE(xdg_wm_base); + } else if (!strcmp(interface, zwp_linux_dmabuf_v1_interface.name)) { + window->zwp_linux_dmabuf_v1 = wl_registry_bind( + registry, name, &zwp_linux_dmabuf_v1_interface, version); + if (!window->zwp_linux_dmabuf_v1) + LOG("Failed to bind wayland zwp_linux_dmabuf_v1 (%s)", strerror(errno)); + } +} + +static void OnRegistryGlobalRemove(void* data, struct wl_registry* registry, + uint32_t name) { + (void)data; + (void)registry; + (void)name; +} + +static void OnSurfaceConfigure(void* data, struct xdg_surface* xdg_surface, + uint32_t serial) { + (void)data; + xdg_surface_ack_configure(xdg_surface, serial); +} + +static void OnToplevelConfigure(void* data, struct xdg_toplevel* xdg_toplevel, + int32_t width, int32_t height, + struct wl_array* states) { + (void)data; + (void)xdg_toplevel; + (void)width; + (void)height; + (void)states; +} + +static void OnToplevelClose(void* data, struct xdg_toplevel* xdg_toplevel) { + (void)data; + (void)xdg_toplevel; + raise(SIGINT); +} + +static void OnToplevelConfigureBounds(void* data, + struct xdg_toplevel* xdg_toplevel, + int32_t width, int32_t height) { + (void)data; + (void)xdg_toplevel; + (void)width; + (void)height; +} + +static void OnToplevelWmCapabilities(void* data, + struct xdg_toplevel* xdg_toplevel, + struct wl_array* capabilities) { + (void)data; + (void)xdg_toplevel; + (void)capabilities; +} + +struct Window* WindowCreate(void) { + struct AUTO(Window)* window = malloc(sizeof(struct Window)); + if (!window) { + LOG("Failed to allocate window (%s)", strerror(errno)); + return NULL; + } + *window = (struct Window){ + .wl_display = NULL, + .wl_surface = NULL, + .xdg_wm_base = NULL, + .zwp_linux_dmabuf_v1 = NULL, + .xdg_surface = NULL, + .xdg_toplevel = NULL, + .wl_buffer = NULL, + }; + + window->wl_display = wl_display_connect(NULL); + if (!window->wl_display) { + LOG("Failed to connect wayland display (%s)", strerror(errno)); + return NULL; + } + + struct AUTO(wl_registry)* wl_registry = + wl_display_get_registry(window->wl_display); + if (!wl_registry) { + LOG("Failed to get wayland registry (%s)", strerror(errno)); + return NULL; + } + static const struct wl_registry_listener wl_registry_listener = { + .global = OnRegistryGlobal, + .global_remove = OnRegistryGlobalRemove, + }; + if (wl_registry_add_listener(wl_registry, &wl_registry_listener, window)) { + LOG("Failed to set wayland registry listener (%s)", strerror(errno)); + return NULL; + } + if (wl_display_roundtrip(window->wl_display) == -1) { + LOG("Failed to roundtrip wayland display (%s)", strerror(errno)); + return NULL; + } + + if (!window->wl_surface || !window->xdg_wm_base || + !window->zwp_linux_dmabuf_v1) { + LOG("Some wayland objects are missing"); + return NULL; + } + window->xdg_surface = + xdg_wm_base_get_xdg_surface(window->xdg_wm_base, window->wl_surface); + if (!window->xdg_surface) { + LOG("Failed to get wayland surface (%s)", strerror(errno)); + return NULL; + } + static const struct xdg_surface_listener xdg_surface_listener = { + .configure = OnSurfaceConfigure, + }; + if (xdg_surface_add_listener(window->xdg_surface, &xdg_surface_listener, + NULL)) { + LOG("Failed to add wayland surface listener (%s)", strerror(errno)); + return NULL; + } + window->xdg_toplevel = xdg_surface_get_toplevel(window->xdg_surface); + if (!window->xdg_toplevel) { + LOG("Failed to get wayland toplevel (%s)", strerror(errno)); + return NULL; + } + static const struct xdg_toplevel_listener xdg_toplevel_listener = { + .configure = OnToplevelConfigure, + .close = OnToplevelClose, + .configure_bounds = OnToplevelConfigureBounds, + .wm_capabilities = OnToplevelWmCapabilities, + }; + if (xdg_toplevel_add_listener(window->xdg_toplevel, &xdg_toplevel_listener, + NULL)) { + LOG("Failed to add wayland toplevel listener (%s)", strerror(errno)); + return NULL; + } + xdg_toplevel_set_fullscreen(window->xdg_toplevel, NULL); + wl_surface_commit(window->wl_surface); + return RELEASE(window); +} + +int WindowGetEventsFd(const struct Window* window) { + int events_fd = wl_display_get_fd(window->wl_display); + if (events_fd == -1) + LOG("Failed to get wayland display fd (%s)", strerror(errno)); + return events_fd; +} + +bool WindowProcessEvents(const struct Window* window) { + if (wl_display_dispatch(window->wl_display) == -1) { + LOG("Failed to dispatch wayland display (%s)", strerror(errno)); + return false; + } + return true; +} + +static void OnZwpLinuxBufferParamsCreated( + void* data, struct zwp_linux_buffer_params_v1* zwp_linux_buffer_params_v1, + struct wl_buffer* buffer) { + (void)zwp_linux_buffer_params_v1; + struct wl_buffer** wl_buffer = data; + *wl_buffer = buffer; +} + +static void OnZwpLinuxBufferParamsFailed( + void* data, struct zwp_linux_buffer_params_v1* zwp_linux_buffer_params_v1) { + (void)data; + (void)zwp_linux_buffer_params_v1; +} + +bool WindowRenderFrame(struct Window* window, const struct Frame* frame) { + struct AUTO(zwp_linux_buffer_params_v1)* zwp_linux_buffer_params_v1 = + zwp_linux_dmabuf_v1_create_params(window->zwp_linux_dmabuf_v1); + if (!zwp_linux_buffer_params_v1) { + LOG("Failed to create wayland dmabuf params (%s)", strerror(errno)); + return false; + } + + struct AUTO(wl_buffer)* wl_buffer = NULL; + static const struct zwp_linux_buffer_params_v1_listener + zwp_linux_buffer_params_v1_listener = { + .created = OnZwpLinuxBufferParamsCreated, + .failed = OnZwpLinuxBufferParamsFailed, + }; + if (zwp_linux_buffer_params_v1_add_listener( + zwp_linux_buffer_params_v1, &zwp_linux_buffer_params_v1_listener, + &wl_buffer)) { + LOG("Failed to add buffer wayland dmabuf params listener (%s)", + strerror(errno)); + return false; + } + + for (size_t i = 0; i < frame->nplanes; i++) { + zwp_linux_buffer_params_v1_add( + zwp_linux_buffer_params_v1, frame->planes[i].dmabuf_fd, (uint32_t)i, + frame->planes[i].offset, frame->planes[i].pitch, + frame->planes[i].modifier >> 32, + frame->planes[i].modifier & UINT32_MAX); + } + zwp_linux_buffer_params_v1_create(zwp_linux_buffer_params_v1, + (int)frame->width, (int)frame->height, + frame->fourcc, 0); + if (wl_display_roundtrip(window->wl_display) == -1) { + LOG("Failed to roundtrip wayland display (%s)", strerror(errno)); + return false; + } + if (!wl_buffer) { + LOG("Failed to create wl_buffer"); + return false; + } + + SWAP(window->wl_buffer, wl_buffer); + wl_surface_attach(window->wl_surface, window->wl_buffer, 0, 0); + wl_surface_damage(window->wl_surface, 0, 0, INT32_MAX, INT32_MAX); + wl_surface_commit(window->wl_surface); + if (wl_display_roundtrip(window->wl_display) == -1) { + LOG("Failed to roundtrip wayland display (%s)", strerror(errno)); + return false; + } + return true; +} + +void WindowDestroy(struct Window** window) { + if (!window || !*window) return; + if ((*window)->xdg_toplevel) xdg_toplevel_destroy((*window)->xdg_toplevel); + if ((*window)->xdg_surface) xdg_surface_destroy((*window)->xdg_surface); + if ((*window)->zwp_linux_dmabuf_v1) + zwp_linux_dmabuf_v1_destroy((*window)->zwp_linux_dmabuf_v1); + if ((*window)->xdg_wm_base) xdg_wm_base_destroy((*window)->xdg_wm_base); + if ((*window)->wl_surface) wl_surface_destroy((*window)->wl_surface); + if ((*window)->wl_display) wl_display_disconnect((*window)->wl_display); + free(*window); + *window = NULL; +} diff --git a/window.h b/window.h new file mode 100644 index 0000000..7ac3dbf --- /dev/null +++ b/window.h @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2023 Mikhail Burakov. This file is part of receiver. + * + * receiver is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * receiver is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with receiver. If not, see <https://www.gnu.org/licenses/>. + */ + +#ifndef RECEIVER_WINDOW_H_ +#define RECEIVER_WINDOW_H_ + +#include <stdbool.h> + +struct Window; +struct Frame; + +struct Window* WindowCreate(void); +int WindowGetEventsFd(const struct Window* window); +bool WindowProcessEvents(const struct Window* window); +bool WindowRenderFrame(struct Window* window, const struct Frame* frame); +void WindowDestroy(struct Window** window); + +#endif // RECEIVER_WINDOW_H_ |