diff options
Diffstat (limited to 'camera.c')
| -rw-r--r-- | camera.c | 27 |
1 files changed, 21 insertions, 6 deletions
@@ -552,6 +552,7 @@ bool camera_next_frame(Camera *camera) { const int32_t frame_height = camera_frame_height(camera); if (camera_pixel_format(camera) == V4L2_PIX_FMT_MJPEG) { // decompress the jpeg + // ("motion jpeg" is actually just a series of jpegs) // NOTE: libjpeg is ~2x as fast as stb_image JpegErrorMessenger messenger = {.base = {.error_exit = jpeg_error_handler}}; struct jpeg_decompress_struct cinfo = {0}; @@ -592,7 +593,7 @@ bool camera_next_frame(Camera *camera) { return true; } -void camera_update_gl_textures(Camera *camera, const GLuint textures[3]) { +int camera_update_gl_textures(Camera *camera, const GLuint textures[3]) { int prev_align = 1; gl.BindTexture(GL_TEXTURE_2D, textures[0]); gl.GetIntegerv(GL_UNPACK_ALIGNMENT, &prev_align); @@ -604,23 +605,32 @@ void camera_update_gl_textures(Camera *camera, const GLuint textures[3]) { } } uint8_t *curr_frame = camera_curr_frame(camera); + int n_textures = 0; if (curr_frame) { switch (camera->curr_format.fmt.pix.pixelformat) { case V4L2_PIX_FMT_RGB24: - if (camera->frame_bytes_set >= (size_t)frame_width * (size_t)frame_height * 3) + if (camera->frame_bytes_set >= (size_t)frame_width * (size_t)frame_height * 3) { gl.TexImage2D(GL_TEXTURE_2D, 0, GL_RGB, frame_width, frame_height, 0, GL_RGB, GL_UNSIGNED_BYTE, curr_frame); + n_textures = 1; + } break; case V4L2_PIX_FMT_BGR24: - if (camera->frame_bytes_set >= (size_t)frame_width * (size_t)frame_height * 3) + if (camera->frame_bytes_set >= (size_t)frame_width * (size_t)frame_height * 3) { gl.TexImage2D(GL_TEXTURE_2D, 0, GL_RGB, frame_width, frame_height, 0, GL_BGR, GL_UNSIGNED_BYTE, curr_frame); + n_textures = 1; + } break; case V4L2_PIX_FMT_GREY: - if (camera->frame_bytes_set >= (size_t)frame_width * (size_t)frame_height) + if (camera->frame_bytes_set >= (size_t)frame_width * (size_t)frame_height) { gl.TexImage2D(GL_TEXTURE_2D, 0, GL_RED, frame_width, frame_height, 0, GL_RED, GL_UNSIGNED_BYTE, curr_frame); + n_textures = 1; + } break; case V4L2_PIX_FMT_YUYV: - if (camera->frame_bytes_set >= (size_t)frame_width * (size_t)frame_height * 2) + if (camera->frame_bytes_set >= (size_t)frame_width * (size_t)frame_height * 2) { gl.TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, frame_width / 2, frame_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, curr_frame); + n_textures = 1; + } break; case V4L2_PIX_FMT_YUV420: if (camera->frame_bytes_set >= (size_t)frame_width * (size_t)frame_height * 3 / 2) { @@ -634,6 +644,7 @@ void camera_update_gl_textures(Camera *camera, const GLuint textures[3]) { gl.BindTexture(GL_TEXTURE_2D, textures[2]); gl.TexImage2D(GL_TEXTURE_2D, 0, GL_RED, frame_width / 2, frame_height / 2, 0, GL_RED, GL_UNSIGNED_BYTE, curr_frame + (size_t)frame_width * (size_t)frame_height * 5 / 4); + n_textures = 3; } break; case V4L2_PIX_FMT_YVU420: @@ -649,6 +660,7 @@ void camera_update_gl_textures(Camera *camera, const GLuint textures[3]) { gl.BindTexture(GL_TEXTURE_2D, textures[1]); gl.TexImage2D(GL_TEXTURE_2D, 0, GL_RED, frame_width / 2, frame_height / 2, 0, GL_RED, GL_UNSIGNED_BYTE, curr_frame + (size_t)frame_width * (size_t)frame_height * 5 / 4); + n_textures = 3; } break; case V4L2_PIX_FMT_NV12: @@ -660,16 +672,18 @@ void camera_update_gl_textures(Camera *camera, const GLuint textures[3]) { gl.BindTexture(GL_TEXTURE_2D, textures[1]); gl.TexImage2D(GL_TEXTURE_2D, 0, GL_RG, frame_width / 2, frame_height / 2, 0, GL_RG, GL_UNSIGNED_BYTE, curr_frame + (size_t)frame_width * (size_t)frame_height); + n_textures = 2; } break; case V4L2_PIX_FMT_MJPEG: { - // "motion jpeg" is actually just a series of jpegs gl.TexImage2D(GL_TEXTURE_2D, 0, GL_RGB, frame_width, frame_height, 0, GL_RGB, GL_UNSIGNED_BYTE, camera->decompression_buf); + n_textures = 1; } break; } } gl.PixelStorei(GL_UNPACK_ALIGNMENT, prev_align); + return n_textures; } const char *camera_name(Camera *camera) { @@ -704,6 +718,7 @@ void camera_close(Camera *camera) { void camera_free(Camera *camera) { camera_close(camera); free(camera->devnode); + free(camera->name); free(camera); } |