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authordec05eba <dec05eba@protonmail.com>2024-07-05 01:59:04 +0200
committerdec05eba <dec05eba@protonmail.com>2024-07-05 10:33:47 +0200
commitb9fa7f2fa25ee37c87077bce468c95e48fce5c18 (patch)
tree3aff293110d8405e8057edb9c757f6e630c22de2 /src/encoder/video/software.c
parent62d61fda12e3774fee6b671e44fb89bd2ef8da8c (diff)
Separate video encoding method from capture method
With this instead of kms_cuda/kms_vaapi/kms_software and xcomposite_cuda/xcomposite_vaapi/xcomposite_software there is now only kms and xcomposite.
Diffstat (limited to 'src/encoder/video/software.c')
-rw-r--r--src/encoder/video/software.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/src/encoder/video/software.c b/src/encoder/video/software.c
new file mode 100644
index 0000000..c5fde4d
--- /dev/null
+++ b/src/encoder/video/software.c
@@ -0,0 +1,127 @@
+#include "../../../include/encoder/video/software.h"
+#include "../../../include/egl.h"
+
+#include <libavcodec/avcodec.h>
+#include <libavutil/frame.h>
+
+#include <stdlib.h>
+
+typedef struct {
+ gsr_video_encoder_software_params params;
+
+ unsigned int target_textures[2];
+} gsr_video_encoder_software;
+
+static unsigned int gl_create_texture(gsr_egl *egl, int width, int height, int internal_format, unsigned int format) {
+ unsigned int texture_id = 0;
+ egl->glGenTextures(1, &texture_id);
+ egl->glBindTexture(GL_TEXTURE_2D, texture_id);
+ egl->glTexImage2D(GL_TEXTURE_2D, 0, internal_format, width, height, 0, format, GL_UNSIGNED_BYTE, NULL);
+
+ egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+ egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+ egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ egl->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+
+ egl->glBindTexture(GL_TEXTURE_2D, 0);
+ return texture_id;
+}
+
+static bool gsr_video_encoder_software_setup_textures(gsr_video_encoder_software *self, AVCodecContext *video_codec_context, AVFrame *frame) {
+ int res = av_frame_get_buffer(frame, 1); // TODO: Align?
+ if(res < 0) {
+ fprintf(stderr, "gsr error: gsr_video_encoder_software_setup_textures: av_frame_get_buffer failed: %d\n", res);
+ return false;
+ }
+
+ res = av_frame_make_writable(frame);
+ if(res < 0) {
+ fprintf(stderr, "gsr error: gsr_video_encoder_software_setup_textures: av_frame_make_writable failed: %d\n", res);
+ return false;
+ }
+
+ const unsigned int internal_formats_nv12[2] = { GL_R8, GL_RG8 };
+ const unsigned int internal_formats_p010[2] = { GL_R16, GL_RG16 };
+ const unsigned int formats[2] = { GL_RED, GL_RG };
+ const int div[2] = {1, 2}; // divide UV texture size by 2 because chroma is half size
+
+ for(int i = 0; i < 2; ++i) {
+ self->target_textures[i] = gl_create_texture(self->params.egl, video_codec_context->width / div[i], video_codec_context->height / div[i], !self->params.hdr ? internal_formats_nv12[i] : internal_formats_p010[i], formats[i]);
+ if(self->target_textures[i] == 0) {
+ fprintf(stderr, "gsr error: gsr_capture_kms_setup_cuda_textures: failed to create opengl texture\n");
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static void gsr_video_encoder_software_stop(gsr_video_encoder_software *self, AVCodecContext *video_codec_context);
+
+static bool gsr_video_encoder_software_start(gsr_video_encoder *encoder, AVCodecContext *video_codec_context, AVFrame *frame) {
+ gsr_video_encoder_software *encoder_software = encoder->priv;
+
+ if(!gsr_video_encoder_software_setup_textures(encoder_software, video_codec_context, frame)) {
+ gsr_video_encoder_software_stop(encoder_software, video_codec_context);
+ return false;
+ }
+
+ return true;
+}
+
+void gsr_video_encoder_software_stop(gsr_video_encoder_software *self, AVCodecContext *video_codec_context) {
+ (void)video_codec_context;
+ self->params.egl->glDeleteTextures(2, self->target_textures);
+ self->target_textures[0] = 0;
+ self->target_textures[1] = 0;
+}
+
+static void gsr_video_encoder_software_copy_textures_to_frame(gsr_video_encoder *encoder, AVFrame *frame) {
+ gsr_video_encoder_software *encoder_software = encoder->priv;
+ // TODO: hdr support
+ const unsigned int formats[2] = { GL_RED, GL_RG };
+ for(int i = 0; i < 2; ++i) {
+ encoder_software->params.egl->glBindTexture(GL_TEXTURE_2D, encoder_software->target_textures[i]);
+ encoder_software->params.egl->glGetTexImage(GL_TEXTURE_2D, 0, formats[i], GL_UNSIGNED_BYTE, frame->data[i]);
+ }
+ encoder_software->params.egl->glBindTexture(GL_TEXTURE_2D, 0);
+ // cap_kms->kms.base.egl->eglSwapBuffers(cap_kms->kms.base.egl->egl_display, cap_kms->kms.base.egl->egl_surface);
+}
+
+static void gsr_video_encoder_software_get_textures(gsr_video_encoder *encoder, unsigned int *textures, int *num_textures, gsr_destination_color *destination_color) {
+ gsr_video_encoder_software *encoder_software = encoder->priv;
+ textures[0] = encoder_software->target_textures[0];
+ textures[1] = encoder_software->target_textures[1];
+ *num_textures = 2;
+ *destination_color = encoder_software->params.hdr ? GSR_DESTINATION_COLOR_P010 : GSR_DESTINATION_COLOR_NV12;
+}
+
+static void gsr_video_encoder_software_destroy(gsr_video_encoder *encoder, AVCodecContext *video_codec_context) {
+ gsr_video_encoder_software_stop(encoder->priv, video_codec_context);
+ free(encoder->priv);
+ free(encoder);
+}
+
+gsr_video_encoder* gsr_video_encoder_software_create(const gsr_video_encoder_software_params *params) {
+ gsr_video_encoder *encoder = calloc(1, sizeof(gsr_video_encoder));
+ if(!encoder)
+ return NULL;
+
+ gsr_video_encoder_software *encoder_software = calloc(1, sizeof(gsr_video_encoder_software));
+ if(!encoder_software) {
+ free(encoder);
+ return NULL;
+ }
+
+ encoder_software->params = *params;
+
+ *encoder = (gsr_video_encoder) {
+ .start = gsr_video_encoder_software_start,
+ .copy_textures_to_frame = gsr_video_encoder_software_copy_textures_to_frame,
+ .get_textures = gsr_video_encoder_software_get_textures,
+ .destroy = gsr_video_encoder_software_destroy,
+ .priv = encoder_software
+ };
+
+ return encoder;
+}