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#include "../../include/capture/kms_vaapi.h"
#include "../../include/capture/kms.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <assert.h>
#include <libavutil/hwcontext.h>
#include <libavutil/hwcontext_vaapi.h>
#include <libavcodec/avcodec.h>
#include <va/va_drmcommon.h>
typedef struct {
gsr_capture_base base;
gsr_capture_kms kms;
gsr_capture_kms_vaapi_params params;
VADisplay va_dpy;
VADRMPRIMESurfaceDescriptor prime;
} gsr_capture_kms_vaapi;
static void gsr_capture_kms_vaapi_stop(gsr_capture *cap, AVCodecContext *video_codec_context);
static bool drm_create_codec_context(gsr_capture_kms_vaapi *cap_kms, AVCodecContext *video_codec_context) {
char render_path[128];
if(!gsr_card_path_get_render_path(cap_kms->params.egl->card_path, render_path)) {
fprintf(stderr, "gsr error: failed to get /dev/dri/renderDXXX file from %s\n", cap_kms->params.egl->card_path);
return false;
}
AVBufferRef *device_ctx;
if(av_hwdevice_ctx_create(&device_ctx, AV_HWDEVICE_TYPE_VAAPI, render_path, NULL, 0) < 0) {
fprintf(stderr, "Error: Failed to create hardware device context\n");
return false;
}
AVBufferRef *frame_context = av_hwframe_ctx_alloc(device_ctx);
if(!frame_context) {
fprintf(stderr, "Error: Failed to create hwframe context\n");
av_buffer_unref(&device_ctx);
return false;
}
AVHWFramesContext *hw_frame_context =
(AVHWFramesContext *)frame_context->data;
hw_frame_context->width = video_codec_context->width;
hw_frame_context->height = video_codec_context->height;
hw_frame_context->sw_format = cap_kms->params.hdr ? AV_PIX_FMT_P010LE : AV_PIX_FMT_NV12;
hw_frame_context->format = video_codec_context->pix_fmt;
hw_frame_context->device_ref = device_ctx;
hw_frame_context->device_ctx = (AVHWDeviceContext*)device_ctx->data;
//hw_frame_context->initial_pool_size = 20;
AVVAAPIDeviceContext *vactx =((AVHWDeviceContext*)device_ctx->data)->hwctx;
cap_kms->va_dpy = vactx->display;
if (av_hwframe_ctx_init(frame_context) < 0) {
fprintf(stderr, "Error: Failed to initialize hardware frame context "
"(note: ffmpeg version needs to be > 4.0)\n");
av_buffer_unref(&device_ctx);
//av_buffer_unref(&frame_context);
return false;
}
video_codec_context->hw_device_ctx = av_buffer_ref(device_ctx);
video_codec_context->hw_frames_ctx = av_buffer_ref(frame_context);
return true;
}
static int gsr_capture_kms_vaapi_start(gsr_capture *cap, AVCodecContext *video_codec_context, AVFrame *frame) {
gsr_capture_kms_vaapi *cap_kms = cap->priv;
int res = gsr_capture_kms_start(&cap_kms->kms, &cap_kms->base, cap_kms->params.display_to_capture, cap_kms->params.egl, video_codec_context, frame);
if(res != 0) {
gsr_capture_kms_vaapi_stop(cap, video_codec_context);
return res;
}
if(!drm_create_codec_context(cap_kms, video_codec_context)) {
gsr_capture_kms_vaapi_stop(cap, video_codec_context);
return -1;
}
if(!gsr_capture_base_setup_vaapi_textures(&cap_kms->base, frame, cap_kms->params.egl, cap_kms->va_dpy, &cap_kms->prime, cap_kms->params.color_range)) {
gsr_capture_kms_vaapi_stop(cap, video_codec_context);
return -1;
}
return 0;
}
static bool gsr_capture_kms_vaapi_should_stop(gsr_capture *cap, bool *err) {
gsr_capture_kms_vaapi *cap_kms = cap->priv;
if(cap_kms->kms.should_stop) {
if(err)
*err = cap_kms->kms.stop_is_error;
return true;
}
if(err)
*err = false;
return false;
}
static int gsr_capture_kms_vaapi_capture(gsr_capture *cap, AVFrame *frame) {
gsr_capture_kms_vaapi *cap_kms = cap->priv;
gsr_capture_kms_capture(&cap_kms->kms, &cap_kms->base, frame, cap_kms->params.egl, cap_kms->params.hdr, false, false);
return 0;
}
static void gsr_capture_kms_vaapi_capture_end(gsr_capture *cap, AVFrame *frame) {
(void)frame;
gsr_capture_kms_vaapi *cap_kms = cap->priv;
gsr_capture_kms_cleanup_kms_fds(&cap_kms->kms);
}
static void gsr_capture_kms_vaapi_stop(gsr_capture *cap, AVCodecContext *video_codec_context) {
gsr_capture_kms_vaapi *cap_kms = cap->priv;
for(uint32_t i = 0; i < cap_kms->prime.num_objects; ++i) {
if(cap_kms->prime.objects[i].fd > 0) {
close(cap_kms->prime.objects[i].fd);
cap_kms->prime.objects[i].fd = 0;
}
}
if(video_codec_context->hw_device_ctx)
av_buffer_unref(&video_codec_context->hw_device_ctx);
if(video_codec_context->hw_frames_ctx)
av_buffer_unref(&video_codec_context->hw_frames_ctx);
gsr_capture_kms_stop(&cap_kms->kms);
gsr_capture_base_stop(&cap_kms->base, cap_kms->params.egl);
}
static void gsr_capture_kms_vaapi_destroy(gsr_capture *cap, AVCodecContext *video_codec_context) {
(void)video_codec_context;
gsr_capture_kms_vaapi *cap_kms = cap->priv;
if(cap->priv) {
gsr_capture_kms_vaapi_stop(cap, video_codec_context);
free((void*)cap_kms->params.display_to_capture);
cap_kms->params.display_to_capture = NULL;
free(cap->priv);
cap->priv = NULL;
}
free(cap);
}
gsr_capture* gsr_capture_kms_vaapi_create(const gsr_capture_kms_vaapi_params *params) {
if(!params) {
fprintf(stderr, "gsr error: gsr_capture_kms_vaapi_create params is NULL\n");
return NULL;
}
gsr_capture *cap = calloc(1, sizeof(gsr_capture));
if(!cap)
return NULL;
gsr_capture_kms_vaapi *cap_kms = calloc(1, sizeof(gsr_capture_kms_vaapi));
if(!cap_kms) {
free(cap);
return NULL;
}
const char *display_to_capture = strdup(params->display_to_capture);
if(!display_to_capture) {
/* TODO XCloseDisplay */
free(cap);
free(cap_kms);
return NULL;
}
cap_kms->params = *params;
cap_kms->params.display_to_capture = display_to_capture;
*cap = (gsr_capture) {
.start = gsr_capture_kms_vaapi_start,
.tick = NULL,
.should_stop = gsr_capture_kms_vaapi_should_stop,
.capture = gsr_capture_kms_vaapi_capture,
.capture_end = gsr_capture_kms_vaapi_capture_end,
.destroy = gsr_capture_kms_vaapi_destroy,
.priv = cap_kms
};
return cap;
}
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