+++ /dev/null
-#include "theme.h"
-
-#include <assert.h>
-#include <bmusb/bmusb.h>
-#include <epoxy/gl.h>
-#include <lauxlib.h>
-#include <lua.hpp>
-#include <movit/deinterlace_effect.h>
-#include <movit/effect.h>
-#include <movit/effect_chain.h>
-#include <movit/image_format.h>
-#include <movit/input.h>
-#include <movit/lift_gamma_gain_effect.h>
-#include <movit/mix_effect.h>
-#include <movit/multiply_effect.h>
-#include <movit/overlay_effect.h>
-#include <movit/padding_effect.h>
-#include <movit/resample_effect.h>
-#include <movit/resize_effect.h>
-#include <movit/util.h>
-#include <movit/white_balance_effect.h>
-#include <movit/ycbcr.h>
-#include <movit/ycbcr_input.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <cstddef>
-#include <memory>
-#include <new>
-#include <utility>
-
-#include "defs.h"
-#ifdef HAVE_CEF
-#include "cef_capture.h"
-#endif
-#include "ffmpeg_capture.h"
-#include "flags.h"
-#include "image_input.h"
-#include "input_state.h"
-#include "pbo_frame_allocator.h"
-
-#if !defined LUA_VERSION_NUM || LUA_VERSION_NUM==501
-
-// Compatibility shims for LuaJIT 2.0 (LuaJIT 2.1 implements the entire Lua 5.2 API).
-// Adapted from https://github.com/keplerproject/lua-compat-5.2/blob/master/c-api/compat-5.2.c
-// and licensed as follows:
-//
-// The MIT License (MIT)
-//
-// Copyright (c) 2013 Hisham Muhammad
-//
-// 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 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.
-
-/*
-** Adapted from Lua 5.2.0
-*/
-void luaL_setfuncs(lua_State *L, const luaL_Reg *l, int nup) {
- luaL_checkstack(L, nup+1, "too many upvalues");
- for (; l->name != NULL; l++) { /* fill the table with given functions */
- int i;
- lua_pushstring(L, l->name);
- for (i = 0; i < nup; i++) /* copy upvalues to the top */
- lua_pushvalue(L, -(nup + 1));
- lua_pushcclosure(L, l->func, nup); /* closure with those upvalues */
- lua_settable(L, -(nup + 3)); /* table must be below the upvalues, the name and the closure */
- }
- lua_pop(L, nup); /* remove upvalues */
-}
-
-void *luaL_testudata(lua_State *L, int i, const char *tname) {
- void *p = lua_touserdata(L, i);
- luaL_checkstack(L, 2, "not enough stack slots");
- if (p == NULL || !lua_getmetatable(L, i))
- return NULL;
- else {
- int res = 0;
- luaL_getmetatable(L, tname);
- res = lua_rawequal(L, -1, -2);
- lua_pop(L, 2);
- if (!res)
- p = NULL;
- }
- return p;
-}
-
-#endif
-
-class Mixer;
-
-namespace movit {
-class ResourcePool;
-} // namespace movit
-
-using namespace std;
-using namespace movit;
-
-extern Mixer *global_mixer;
-
-Theme *get_theme_updata(lua_State* L)
-{
- luaL_checktype(L, lua_upvalueindex(1), LUA_TLIGHTUSERDATA);
- return (Theme *)lua_touserdata(L, lua_upvalueindex(1));
-}
-
-int ThemeMenu_set(lua_State *L)
-{
- Theme *theme = get_theme_updata(L);
- return theme->set_theme_menu(L);
-}
-
-namespace {
-
-// Contains basically the same data as InputState, but does not hold on to
-// a reference to the frames. This is important so that we can release them
-// without having to wait for Lua's GC.
-struct InputStateInfo {
- InputStateInfo(const InputState& input_state);
-
- unsigned last_width[MAX_VIDEO_CARDS], last_height[MAX_VIDEO_CARDS];
- bool last_interlaced[MAX_VIDEO_CARDS], last_has_signal[MAX_VIDEO_CARDS], last_is_connected[MAX_VIDEO_CARDS];
- unsigned last_frame_rate_nom[MAX_VIDEO_CARDS], last_frame_rate_den[MAX_VIDEO_CARDS];
-};
-
-InputStateInfo::InputStateInfo(const InputState &input_state)
-{
- for (unsigned signal_num = 0; signal_num < MAX_VIDEO_CARDS; ++signal_num) {
- BufferedFrame frame = input_state.buffered_frames[signal_num][0];
- if (frame.frame == nullptr) {
- last_width[signal_num] = last_height[signal_num] = 0;
- last_interlaced[signal_num] = false;
- last_has_signal[signal_num] = false;
- last_is_connected[signal_num] = false;
- continue;
- }
- const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
- last_width[signal_num] = userdata->last_width[frame.field_number];
- last_height[signal_num] = userdata->last_height[frame.field_number];
- last_interlaced[signal_num] = userdata->last_interlaced;
- last_has_signal[signal_num] = userdata->last_has_signal;
- last_is_connected[signal_num] = userdata->last_is_connected;
- last_frame_rate_nom[signal_num] = userdata->last_frame_rate_nom;
- last_frame_rate_den[signal_num] = userdata->last_frame_rate_den;
- }
-}
-
-class LuaRefWithDeleter {
-public:
- LuaRefWithDeleter(mutex *m, lua_State *L, int ref) : m(m), L(L), ref(ref) {}
- ~LuaRefWithDeleter() {
- unique_lock<mutex> lock(*m);
- luaL_unref(L, LUA_REGISTRYINDEX, ref);
- }
- int get() const { return ref; }
-
-private:
- LuaRefWithDeleter(const LuaRefWithDeleter &) = delete;
-
- mutex *m;
- lua_State *L;
- int ref;
-};
-
-template<class T, class... Args>
-int wrap_lua_object(lua_State* L, const char *class_name, Args&&... args)
-{
- // Construct the C++ object and put it on the stack.
- void *mem = lua_newuserdata(L, sizeof(T));
- new(mem) T(forward<Args>(args)...);
-
- // Look up the metatable named <class_name>, and set it on the new object.
- luaL_getmetatable(L, class_name);
- lua_setmetatable(L, -2);
-
- return 1;
-}
-
-// Like wrap_lua_object, but the object is not owned by Lua; ie. it's not freed
-// by Lua GC. This is typically the case for Effects, which are owned by EffectChain
-// and expected to be destructed by it. The object will be of type T** instead of T*
-// when exposed to Lua.
-//
-// Note that we currently leak if you allocate an Effect in this way and never call
-// add_effect. We should see if there's a way to e.g. set __gc on it at construction time
-// and then release that once add_effect() takes ownership.
-template<class T, class... Args>
-int wrap_lua_object_nonowned(lua_State* L, const char *class_name, Args&&... args)
-{
- // Construct the pointer ot the C++ object and put it on the stack.
- T **obj = (T **)lua_newuserdata(L, sizeof(T *));
- *obj = new T(forward<Args>(args)...);
-
- // Look up the metatable named <class_name>, and set it on the new object.
- luaL_getmetatable(L, class_name);
- lua_setmetatable(L, -2);
-
- return 1;
-}
-
-Effect *get_effect(lua_State *L, int idx)
-{
- if (luaL_testudata(L, idx, "WhiteBalanceEffect") ||
- luaL_testudata(L, idx, "ResampleEffect") ||
- luaL_testudata(L, idx, "PaddingEffect") ||
- luaL_testudata(L, idx, "IntegralPaddingEffect") ||
- luaL_testudata(L, idx, "OverlayEffect") ||
- luaL_testudata(L, idx, "ResizeEffect") ||
- luaL_testudata(L, idx, "MultiplyEffect") ||
- luaL_testudata(L, idx, "MixEffect") ||
- luaL_testudata(L, idx, "LiftGammaGainEffect") ||
- luaL_testudata(L, idx, "ImageInput")) {
- return *(Effect **)lua_touserdata(L, idx);
- }
- luaL_error(L, "Error: Index #%d was not an Effect type\n", idx);
- return nullptr;
-}
-
-InputStateInfo *get_input_state_info(lua_State *L, int idx)
-{
- if (luaL_testudata(L, idx, "InputStateInfo")) {
- return (InputStateInfo *)lua_touserdata(L, idx);
- }
- luaL_error(L, "Error: Index #%d was not InputStateInfo\n", idx);
- return nullptr;
-}
-
-bool checkbool(lua_State* L, int idx)
-{
- luaL_checktype(L, idx, LUA_TBOOLEAN);
- return lua_toboolean(L, idx);
-}
-
-string checkstdstring(lua_State *L, int index)
-{
- size_t len;
- const char* cstr = lua_tolstring(L, index, &len);
- return string(cstr, len);
-}
-
-int EffectChain_new(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- Theme *theme = get_theme_updata(L);
- int aspect_w = luaL_checknumber(L, 1);
- int aspect_h = luaL_checknumber(L, 2);
-
- return wrap_lua_object<EffectChain>(L, "EffectChain", aspect_w, aspect_h, theme->get_resource_pool());
-}
-
-int EffectChain_gc(lua_State* L)
-{
- assert(lua_gettop(L) == 1);
- EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
- chain->~EffectChain();
- return 0;
-}
-
-int EffectChain_add_live_input(lua_State* L)
-{
- assert(lua_gettop(L) == 3);
- Theme *theme = get_theme_updata(L);
- EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
- bool override_bounce = checkbool(L, 2);
- bool deinterlace = checkbool(L, 3);
- bmusb::PixelFormat pixel_format = global_flags.ten_bit_input ? bmusb::PixelFormat_10BitYCbCr : bmusb::PixelFormat_8BitYCbCr;
-
- // Needs to be nonowned to match add_video_input (see below).
- return wrap_lua_object_nonowned<LiveInputWrapper>(L, "LiveInputWrapper", theme, chain, pixel_format, override_bounce, deinterlace, /*user_connectable=*/true);
-}
-
-int EffectChain_add_video_input(lua_State* L)
-{
- assert(lua_gettop(L) == 3);
- Theme *theme = get_theme_updata(L);
- EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
- FFmpegCapture **capture = (FFmpegCapture **)luaL_checkudata(L, 2, "VideoInput");
- bool deinterlace = checkbool(L, 3);
-
- // These need to be nonowned, so that the LiveInputWrapper still exists
- // and can feed frames to the right EffectChain even if the Lua code
- // doesn't care about the object anymore. (If we change this, we'd need
- // to also unregister the signal connection on __gc.)
- int ret = wrap_lua_object_nonowned<LiveInputWrapper>(
- L, "LiveInputWrapper", theme, chain, (*capture)->get_current_pixel_format(),
- /*override_bounce=*/false, deinterlace, /*user_connectable=*/false);
- if (ret == 1) {
- Theme *theme = get_theme_updata(L);
- LiveInputWrapper **live_input = (LiveInputWrapper **)lua_touserdata(L, -1);
- theme->register_video_signal_connection(chain, *live_input, *capture);
- }
- return ret;
-}
-
-#ifdef HAVE_CEF
-int EffectChain_add_html_input(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- Theme *theme = get_theme_updata(L);
- EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
- CEFCapture **capture = (CEFCapture **)luaL_checkudata(L, 2, "HTMLInput");
-
- // These need to be nonowned, so that the LiveInputWrapper still exists
- // and can feed frames to the right EffectChain even if the Lua code
- // doesn't care about the object anymore. (If we change this, we'd need
- // to also unregister the signal connection on __gc.)
- int ret = wrap_lua_object_nonowned<LiveInputWrapper>(
- L, "LiveInputWrapper", theme, chain, (*capture)->get_current_pixel_format(),
- /*override_bounce=*/false, /*deinterlace=*/false, /*user_connectable=*/false);
- if (ret == 1) {
- Theme *theme = get_theme_updata(L);
- LiveInputWrapper **live_input = (LiveInputWrapper **)lua_touserdata(L, -1);
- theme->register_html_signal_connection(chain, *live_input, *capture);
- }
- return ret;
-}
-#endif
-
-int EffectChain_add_effect(lua_State* L)
-{
- assert(lua_gettop(L) >= 2);
- EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
-
- // TODO: Better error reporting.
- Effect *effect = get_effect(L, 2);
- if (lua_gettop(L) == 2) {
- if (effect->num_inputs() == 0) {
- chain->add_input((Input *)effect);
- } else {
- chain->add_effect(effect);
- }
- } else {
- vector<Effect *> inputs;
- for (int idx = 3; idx <= lua_gettop(L); ++idx) {
- if (luaL_testudata(L, idx, "LiveInputWrapper")) {
- LiveInputWrapper **input = (LiveInputWrapper **)lua_touserdata(L, idx);
- inputs.push_back((*input)->get_effect());
- } else {
- inputs.push_back(get_effect(L, idx));
- }
- }
- chain->add_effect(effect, inputs);
- }
-
- lua_settop(L, 2); // Return the effect itself.
-
- // Make sure Lua doesn't garbage-collect it away.
- lua_pushvalue(L, -1);
- luaL_ref(L, LUA_REGISTRYINDEX); // TODO: leak?
-
- return 1;
-}
-
-int EffectChain_finalize(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- EffectChain *chain = (EffectChain *)luaL_checkudata(L, 1, "EffectChain");
- bool is_main_chain = checkbool(L, 2);
-
- // Add outputs as needed.
- // NOTE: If you change any details about the output format, you will need to
- // also update what's given to the muxer (HTTPD::Mux constructor) and
- // what's put in the H.264 stream (sps_rbsp()).
- ImageFormat inout_format;
- inout_format.color_space = COLORSPACE_REC_709;
-
- // Output gamma is tricky. We should output Rec. 709 for TV, except that
- // we expect to run with web players and others that don't really care and
- // just output with no conversion. So that means we'll need to output sRGB,
- // even though H.264 has no setting for that (we use “unspecified”).
- inout_format.gamma_curve = GAMMA_sRGB;
-
- if (is_main_chain) {
- YCbCrFormat output_ycbcr_format;
- // We actually output 4:2:0 and/or 4:2:2 in the end, but chroma subsampling
- // happens in a pass not run by Movit (see ChromaSubsampler::subsample_chroma()).
- output_ycbcr_format.chroma_subsampling_x = 1;
- output_ycbcr_format.chroma_subsampling_y = 1;
-
- // This will be overridden if HDMI/SDI output is in force.
- if (global_flags.ycbcr_rec709_coefficients) {
- output_ycbcr_format.luma_coefficients = YCBCR_REC_709;
- } else {
- output_ycbcr_format.luma_coefficients = YCBCR_REC_601;
- }
-
- output_ycbcr_format.full_range = false;
- output_ycbcr_format.num_levels = 1 << global_flags.x264_bit_depth;
-
- GLenum type = global_flags.x264_bit_depth > 8 ? GL_UNSIGNED_SHORT : GL_UNSIGNED_BYTE;
-
- chain->add_ycbcr_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, output_ycbcr_format, YCBCR_OUTPUT_SPLIT_Y_AND_CBCR, type);
-
- // If we're using zerocopy video encoding (so the destination
- // Y texture is owned by VA-API and will be unavailable for
- // display), add a copy, where we'll only be using the Y component.
- if (global_flags.use_zerocopy) {
- chain->add_ycbcr_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED, output_ycbcr_format, YCBCR_OUTPUT_INTERLEAVED, type); // Add a copy where we'll only be using the Y component.
- }
- chain->set_dither_bits(global_flags.x264_bit_depth > 8 ? 16 : 8);
- chain->set_output_origin(OUTPUT_ORIGIN_TOP_LEFT);
- } else {
- chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
- }
-
- chain->finalize();
- return 0;
-}
-
-int LiveInputWrapper_connect_signal(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- LiveInputWrapper **input = (LiveInputWrapper **)luaL_checkudata(L, 1, "LiveInputWrapper");
- int signal_num = luaL_checknumber(L, 2);
- bool success = (*input)->connect_signal(signal_num);
- if (!success) {
- lua_Debug ar;
- lua_getstack(L, 1, &ar);
- lua_getinfo(L, "nSl", &ar);
- fprintf(stderr, "ERROR: %s:%d: Calling connect_signal() on a video or HTML input. Ignoring.\n",
- ar.source, ar.currentline);
- }
- return 0;
-}
-
-int ImageInput_new(lua_State* L)
-{
- assert(lua_gettop(L) == 1);
- string filename = checkstdstring(L, 1);
- return wrap_lua_object_nonowned<ImageInput>(L, "ImageInput", filename);
-}
-
-int VideoInput_new(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- string filename = checkstdstring(L, 1);
- int pixel_format = luaL_checknumber(L, 2);
- if (pixel_format != bmusb::PixelFormat_8BitYCbCrPlanar &&
- pixel_format != bmusb::PixelFormat_8BitBGRA) {
- fprintf(stderr, "WARNING: Invalid enum %d used for video format, choosing Y'CbCr.\n",
- pixel_format);
- pixel_format = bmusb::PixelFormat_8BitYCbCrPlanar;
- }
- int ret = wrap_lua_object_nonowned<FFmpegCapture>(L, "VideoInput", filename, global_flags.width, global_flags.height);
- if (ret == 1) {
- FFmpegCapture **capture = (FFmpegCapture **)lua_touserdata(L, -1);
- (*capture)->set_pixel_format(bmusb::PixelFormat(pixel_format));
-
- Theme *theme = get_theme_updata(L);
- theme->register_video_input(*capture);
- }
- return ret;
-}
-
-int VideoInput_rewind(lua_State* L)
-{
- assert(lua_gettop(L) == 1);
- FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
- (*video_input)->rewind();
- return 0;
-}
-
-int VideoInput_disconnect(lua_State* L)
-{
- assert(lua_gettop(L) == 1);
- FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
- (*video_input)->disconnect();
- return 0;
-}
-
-int VideoInput_change_rate(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
- double new_rate = luaL_checknumber(L, 2);
- (*video_input)->change_rate(new_rate);
- return 0;
-}
-
-int VideoInput_get_signal_num(lua_State* L)
-{
- assert(lua_gettop(L) == 1);
- FFmpegCapture **video_input = (FFmpegCapture **)luaL_checkudata(L, 1, "VideoInput");
- lua_pushnumber(L, -1 - (*video_input)->get_card_index());
- return 1;
-}
-
-int HTMLInput_new(lua_State* L)
-{
-#ifdef HAVE_CEF
- assert(lua_gettop(L) == 1);
- string url = checkstdstring(L, 1);
- int ret = wrap_lua_object_nonowned<CEFCapture>(L, "HTMLInput", url, global_flags.width, global_flags.height);
- if (ret == 1) {
- CEFCapture **capture = (CEFCapture **)lua_touserdata(L, -1);
- Theme *theme = get_theme_updata(L);
- theme->register_html_input(*capture);
- }
- return ret;
-#else
- fprintf(stderr, "This version of Nageru has been compiled without CEF support.\n");
- fprintf(stderr, "HTMLInput is not available.\n");
- exit(1);
-#endif
-}
-
-#ifdef HAVE_CEF
-int HTMLInput_set_url(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
- string new_url = checkstdstring(L, 2);
- (*video_input)->set_url(new_url);
- return 0;
-}
-
-int HTMLInput_reload(lua_State* L)
-{
- assert(lua_gettop(L) == 1);
- CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
- (*video_input)->reload();
- return 0;
-}
-
-int HTMLInput_set_max_fps(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
- int max_fps = lrint(luaL_checknumber(L, 2));
- (*video_input)->set_max_fps(max_fps);
- return 0;
-}
-
-int HTMLInput_execute_javascript_async(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
- string js = checkstdstring(L, 2);
- (*video_input)->execute_javascript_async(js);
- return 0;
-}
-
-int HTMLInput_resize(lua_State* L)
-{
- assert(lua_gettop(L) == 3);
- CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
- unsigned width = lrint(luaL_checknumber(L, 2));
- unsigned height = lrint(luaL_checknumber(L, 3));
- (*video_input)->resize(width, height);
- return 0;
-}
-
-int HTMLInput_get_signal_num(lua_State* L)
-{
- assert(lua_gettop(L) == 1);
- CEFCapture **video_input = (CEFCapture **)luaL_checkudata(L, 1, "HTMLInput");
- lua_pushnumber(L, -1 - (*video_input)->get_card_index());
- return 1;
-}
-#endif
-
-int WhiteBalanceEffect_new(lua_State* L)
-{
- assert(lua_gettop(L) == 0);
- return wrap_lua_object_nonowned<WhiteBalanceEffect>(L, "WhiteBalanceEffect");
-}
-
-int ResampleEffect_new(lua_State* L)
-{
- assert(lua_gettop(L) == 0);
- return wrap_lua_object_nonowned<ResampleEffect>(L, "ResampleEffect");
-}
-
-int PaddingEffect_new(lua_State* L)
-{
- assert(lua_gettop(L) == 0);
- return wrap_lua_object_nonowned<PaddingEffect>(L, "PaddingEffect");
-}
-
-int IntegralPaddingEffect_new(lua_State* L)
-{
- assert(lua_gettop(L) == 0);
- return wrap_lua_object_nonowned<IntegralPaddingEffect>(L, "IntegralPaddingEffect");
-}
-
-int OverlayEffect_new(lua_State* L)
-{
- assert(lua_gettop(L) == 0);
- return wrap_lua_object_nonowned<OverlayEffect>(L, "OverlayEffect");
-}
-
-int ResizeEffect_new(lua_State* L)
-{
- assert(lua_gettop(L) == 0);
- return wrap_lua_object_nonowned<ResizeEffect>(L, "ResizeEffect");
-}
-
-int MultiplyEffect_new(lua_State* L)
-{
- assert(lua_gettop(L) == 0);
- return wrap_lua_object_nonowned<MultiplyEffect>(L, "MultiplyEffect");
-}
-
-int MixEffect_new(lua_State* L)
-{
- assert(lua_gettop(L) == 0);
- return wrap_lua_object_nonowned<MixEffect>(L, "MixEffect");
-}
-
-int LiftGammaGainEffect_new(lua_State* L)
-{
- assert(lua_gettop(L) == 0);
- return wrap_lua_object_nonowned<LiftGammaGainEffect>(L, "LiftGammaGainEffect");
-}
-
-int InputStateInfo_get_width(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- InputStateInfo *input_state_info = get_input_state_info(L, 1);
- Theme *theme = get_theme_updata(L);
- int signal_num = theme->map_signal(luaL_checknumber(L, 2));
- lua_pushnumber(L, input_state_info->last_width[signal_num]);
- return 1;
-}
-
-int InputStateInfo_get_height(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- InputStateInfo *input_state_info = get_input_state_info(L, 1);
- Theme *theme = get_theme_updata(L);
- int signal_num = theme->map_signal(luaL_checknumber(L, 2));
- lua_pushnumber(L, input_state_info->last_height[signal_num]);
- return 1;
-}
-
-int InputStateInfo_get_interlaced(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- InputStateInfo *input_state_info = get_input_state_info(L, 1);
- Theme *theme = get_theme_updata(L);
- int signal_num = theme->map_signal(luaL_checknumber(L, 2));
- lua_pushboolean(L, input_state_info->last_interlaced[signal_num]);
- return 1;
-}
-
-int InputStateInfo_get_has_signal(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- InputStateInfo *input_state_info = get_input_state_info(L, 1);
- Theme *theme = get_theme_updata(L);
- int signal_num = theme->map_signal(luaL_checknumber(L, 2));
- lua_pushboolean(L, input_state_info->last_has_signal[signal_num]);
- return 1;
-}
-
-int InputStateInfo_get_is_connected(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- InputStateInfo *input_state_info = get_input_state_info(L, 1);
- Theme *theme = get_theme_updata(L);
- int signal_num = theme->map_signal(luaL_checknumber(L, 2));
- lua_pushboolean(L, input_state_info->last_is_connected[signal_num]);
- return 1;
-}
-
-int InputStateInfo_get_frame_rate_nom(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- InputStateInfo *input_state_info = get_input_state_info(L, 1);
- Theme *theme = get_theme_updata(L);
- int signal_num = theme->map_signal(luaL_checknumber(L, 2));
- lua_pushnumber(L, input_state_info->last_frame_rate_nom[signal_num]);
- return 1;
-}
-
-int InputStateInfo_get_frame_rate_den(lua_State* L)
-{
- assert(lua_gettop(L) == 2);
- InputStateInfo *input_state_info = get_input_state_info(L, 1);
- Theme *theme = get_theme_updata(L);
- int signal_num = theme->map_signal(luaL_checknumber(L, 2));
- lua_pushnumber(L, input_state_info->last_frame_rate_den[signal_num]);
- return 1;
-}
-
-int Effect_set_float(lua_State *L)
-{
- assert(lua_gettop(L) == 3);
- Effect *effect = (Effect *)get_effect(L, 1);
- string key = checkstdstring(L, 2);
- float value = luaL_checknumber(L, 3);
- if (!effect->set_float(key, value)) {
- luaL_error(L, "Effect refused set_float(\"%s\", %d) (invalid key?)", key.c_str(), int(value));
- }
- return 0;
-}
-
-int Effect_set_int(lua_State *L)
-{
- assert(lua_gettop(L) == 3);
- Effect *effect = (Effect *)get_effect(L, 1);
- string key = checkstdstring(L, 2);
- float value = luaL_checknumber(L, 3);
- if (!effect->set_int(key, value)) {
- luaL_error(L, "Effect refused set_int(\"%s\", %d) (invalid key?)", key.c_str(), int(value));
- }
- return 0;
-}
-
-int Effect_set_vec3(lua_State *L)
-{
- assert(lua_gettop(L) == 5);
- Effect *effect = (Effect *)get_effect(L, 1);
- string key = checkstdstring(L, 2);
- float v[3];
- v[0] = luaL_checknumber(L, 3);
- v[1] = luaL_checknumber(L, 4);
- v[2] = luaL_checknumber(L, 5);
- if (!effect->set_vec3(key, v)) {
- luaL_error(L, "Effect refused set_vec3(\"%s\", %f, %f, %f) (invalid key?)", key.c_str(),
- v[0], v[1], v[2]);
- }
- return 0;
-}
-
-int Effect_set_vec4(lua_State *L)
-{
- assert(lua_gettop(L) == 6);
- Effect *effect = (Effect *)get_effect(L, 1);
- string key = checkstdstring(L, 2);
- float v[4];
- v[0] = luaL_checknumber(L, 3);
- v[1] = luaL_checknumber(L, 4);
- v[2] = luaL_checknumber(L, 5);
- v[3] = luaL_checknumber(L, 6);
- if (!effect->set_vec4(key, v)) {
- luaL_error(L, "Effect refused set_vec4(\"%s\", %f, %f, %f, %f) (invalid key?)", key.c_str(),
- v[0], v[1], v[2], v[3]);
- }
- return 0;
-}
-
-const luaL_Reg EffectChain_funcs[] = {
- { "new", EffectChain_new },
- { "__gc", EffectChain_gc },
- { "add_live_input", EffectChain_add_live_input },
- { "add_video_input", EffectChain_add_video_input },
-#ifdef HAVE_CEF
- { "add_html_input", EffectChain_add_html_input },
-#endif
- { "add_effect", EffectChain_add_effect },
- { "finalize", EffectChain_finalize },
- { NULL, NULL }
-};
-
-const luaL_Reg LiveInputWrapper_funcs[] = {
- { "connect_signal", LiveInputWrapper_connect_signal },
- { NULL, NULL }
-};
-
-const luaL_Reg ImageInput_funcs[] = {
- { "new", ImageInput_new },
- { "set_float", Effect_set_float },
- { "set_int", Effect_set_int },
- { "set_vec3", Effect_set_vec3 },
- { "set_vec4", Effect_set_vec4 },
- { NULL, NULL }
-};
-
-const luaL_Reg VideoInput_funcs[] = {
- { "new", VideoInput_new },
- { "rewind", VideoInput_rewind },
- { "disconnect", VideoInput_disconnect },
- { "change_rate", VideoInput_change_rate },
- { "get_signal_num", VideoInput_get_signal_num },
- { NULL, NULL }
-};
-
-const luaL_Reg HTMLInput_funcs[] = {
- { "new", HTMLInput_new },
-#ifdef HAVE_CEF
- { "set_url", HTMLInput_set_url },
- { "reload", HTMLInput_reload },
- { "set_max_fps", HTMLInput_set_max_fps },
- { "execute_javascript_async", HTMLInput_execute_javascript_async },
- { "resize", HTMLInput_resize },
- { "get_signal_num", HTMLInput_get_signal_num },
-#endif
- { NULL, NULL }
-};
-
-const luaL_Reg WhiteBalanceEffect_funcs[] = {
- { "new", WhiteBalanceEffect_new },
- { "set_float", Effect_set_float },
- { "set_int", Effect_set_int },
- { "set_vec3", Effect_set_vec3 },
- { "set_vec4", Effect_set_vec4 },
- { NULL, NULL }
-};
-
-const luaL_Reg ResampleEffect_funcs[] = {
- { "new", ResampleEffect_new },
- { "set_float", Effect_set_float },
- { "set_int", Effect_set_int },
- { "set_vec3", Effect_set_vec3 },
- { "set_vec4", Effect_set_vec4 },
- { NULL, NULL }
-};
-
-const luaL_Reg PaddingEffect_funcs[] = {
- { "new", PaddingEffect_new },
- { "set_float", Effect_set_float },
- { "set_int", Effect_set_int },
- { "set_vec3", Effect_set_vec3 },
- { "set_vec4", Effect_set_vec4 },
- { NULL, NULL }
-};
-
-const luaL_Reg IntegralPaddingEffect_funcs[] = {
- { "new", IntegralPaddingEffect_new },
- { "set_float", Effect_set_float },
- { "set_int", Effect_set_int },
- { "set_vec3", Effect_set_vec3 },
- { "set_vec4", Effect_set_vec4 },
- { NULL, NULL }
-};
-
-const luaL_Reg OverlayEffect_funcs[] = {
- { "new", OverlayEffect_new },
- { "set_float", Effect_set_float },
- { "set_int", Effect_set_int },
- { "set_vec3", Effect_set_vec3 },
- { "set_vec4", Effect_set_vec4 },
- { NULL, NULL }
-};
-
-const luaL_Reg ResizeEffect_funcs[] = {
- { "new", ResizeEffect_new },
- { "set_float", Effect_set_float },
- { "set_int", Effect_set_int },
- { "set_vec3", Effect_set_vec3 },
- { "set_vec4", Effect_set_vec4 },
- { NULL, NULL }
-};
-
-const luaL_Reg MultiplyEffect_funcs[] = {
- { "new", MultiplyEffect_new },
- { "set_float", Effect_set_float },
- { "set_int", Effect_set_int },
- { "set_vec3", Effect_set_vec3 },
- { "set_vec4", Effect_set_vec4 },
- { NULL, NULL }
-};
-
-const luaL_Reg MixEffect_funcs[] = {
- { "new", MixEffect_new },
- { "set_float", Effect_set_float },
- { "set_int", Effect_set_int },
- { "set_vec3", Effect_set_vec3 },
- { "set_vec4", Effect_set_vec4 },
- { NULL, NULL }
-};
-
-const luaL_Reg LiftGammaGainEffect_funcs[] = {
- { "new", LiftGammaGainEffect_new },
- { "set_float", Effect_set_float },
- { "set_int", Effect_set_int },
- { "set_vec3", Effect_set_vec3 },
- { "set_vec4", Effect_set_vec4 },
- { NULL, NULL }
-};
-
-const luaL_Reg InputStateInfo_funcs[] = {
- { "get_width", InputStateInfo_get_width },
- { "get_height", InputStateInfo_get_height },
- { "get_interlaced", InputStateInfo_get_interlaced },
- { "get_has_signal", InputStateInfo_get_has_signal },
- { "get_is_connected", InputStateInfo_get_is_connected },
- { "get_frame_rate_nom", InputStateInfo_get_frame_rate_nom },
- { "get_frame_rate_den", InputStateInfo_get_frame_rate_den },
- { NULL, NULL }
-};
-
-const luaL_Reg ThemeMenu_funcs[] = {
- { "set", ThemeMenu_set },
- { NULL, NULL }
-};
-
-} // namespace
-
-LiveInputWrapper::LiveInputWrapper(
- Theme *theme,
- EffectChain *chain,
- bmusb::PixelFormat pixel_format,
- bool override_bounce,
- bool deinterlace,
- bool user_connectable)
- : theme(theme),
- pixel_format(pixel_format),
- deinterlace(deinterlace),
- user_connectable(user_connectable)
-{
- ImageFormat inout_format;
- inout_format.color_space = COLORSPACE_sRGB;
-
- // Gamma curve depends on the input signal, and we don't really get any
- // indications. A camera would be expected to do Rec. 709, but
- // I haven't checked if any do in practice. However, computers _do_ output
- // in sRGB gamma (ie., they don't convert from sRGB to Rec. 709), and
- // I wouldn't really be surprised if most non-professional cameras do, too.
- // So we pick sRGB as the least evil here.
- inout_format.gamma_curve = GAMMA_sRGB;
-
- unsigned num_inputs;
- if (deinterlace) {
- deinterlace_effect = new movit::DeinterlaceEffect();
-
- // As per the comments in deinterlace_effect.h, we turn this off.
- // The most likely interlaced input for us is either a camera
- // (where it's fine to turn it off) or a laptop (where it _should_
- // be turned off).
- CHECK(deinterlace_effect->set_int("enable_spatial_interlacing_check", 0));
-
- num_inputs = deinterlace_effect->num_inputs();
- assert(num_inputs == FRAME_HISTORY_LENGTH);
- } else {
- num_inputs = 1;
- }
-
- if (pixel_format == bmusb::PixelFormat_8BitBGRA) {
- for (unsigned i = 0; i < num_inputs; ++i) {
- // We upload our textures ourselves, and Movit swaps
- // R and B in the shader if we specify BGRA, so lie and say RGBA.
- if (global_flags.can_disable_srgb_decoder) {
- rgba_inputs.push_back(new sRGBSwitchingFlatInput(inout_format, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, GL_UNSIGNED_BYTE, global_flags.width, global_flags.height));
- } else {
- rgba_inputs.push_back(new NonsRGBCapableFlatInput(inout_format, FORMAT_RGBA_POSTMULTIPLIED_ALPHA, GL_UNSIGNED_BYTE, global_flags.width, global_flags.height));
- }
- chain->add_input(rgba_inputs.back());
- }
-
- if (deinterlace) {
- vector<Effect *> reverse_inputs(rgba_inputs.rbegin(), rgba_inputs.rend());
- chain->add_effect(deinterlace_effect, reverse_inputs);
- }
- } else {
- assert(pixel_format == bmusb::PixelFormat_8BitYCbCr ||
- pixel_format == bmusb::PixelFormat_10BitYCbCr ||
- pixel_format == bmusb::PixelFormat_8BitYCbCrPlanar);
-
- // Most of these settings will be overridden later if using PixelFormat_8BitYCbCrPlanar.
- input_ycbcr_format.chroma_subsampling_x = (pixel_format == bmusb::PixelFormat_10BitYCbCr) ? 1 : 2;
- input_ycbcr_format.chroma_subsampling_y = 1;
- input_ycbcr_format.num_levels = (pixel_format == bmusb::PixelFormat_10BitYCbCr) ? 1024 : 256;
- input_ycbcr_format.cb_x_position = 0.0;
- input_ycbcr_format.cr_x_position = 0.0;
- input_ycbcr_format.cb_y_position = 0.5;
- input_ycbcr_format.cr_y_position = 0.5;
- input_ycbcr_format.luma_coefficients = YCBCR_REC_709; // Will be overridden later even if not planar.
- input_ycbcr_format.full_range = false; // Will be overridden later even if not planar.
-
- for (unsigned i = 0; i < num_inputs; ++i) {
- // When using 10-bit input, we're converting to interleaved through v210Converter.
- YCbCrInputSplitting splitting;
- if (pixel_format == bmusb::PixelFormat_10BitYCbCr) {
- splitting = YCBCR_INPUT_INTERLEAVED;
- } else if (pixel_format == bmusb::PixelFormat_8BitYCbCr) {
- splitting = YCBCR_INPUT_SPLIT_Y_AND_CBCR;
- } else {
- splitting = YCBCR_INPUT_PLANAR;
- }
- if (override_bounce) {
- ycbcr_inputs.push_back(new NonBouncingYCbCrInput(inout_format, input_ycbcr_format, global_flags.width, global_flags.height, splitting));
- } else {
- ycbcr_inputs.push_back(new YCbCrInput(inout_format, input_ycbcr_format, global_flags.width, global_flags.height, splitting));
- }
- chain->add_input(ycbcr_inputs.back());
- }
-
- if (deinterlace) {
- vector<Effect *> reverse_inputs(ycbcr_inputs.rbegin(), ycbcr_inputs.rend());
- chain->add_effect(deinterlace_effect, reverse_inputs);
- }
- }
-}
-
-bool LiveInputWrapper::connect_signal(int signal_num)
-{
- if (!user_connectable) {
- return false;
- }
-
- if (global_mixer == nullptr) {
- // No data yet.
- return true;
- }
-
- signal_num = theme->map_signal(signal_num);
- connect_signal_raw(signal_num, *theme->input_state);
- return true;
-}
-
-void LiveInputWrapper::connect_signal_raw(int signal_num, const InputState &input_state)
-{
- BufferedFrame first_frame = input_state.buffered_frames[signal_num][0];
- if (first_frame.frame == nullptr) {
- // No data yet.
- return;
- }
- unsigned width, height;
- {
- const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)first_frame.frame->userdata;
- width = userdata->last_width[first_frame.field_number];
- height = userdata->last_height[first_frame.field_number];
- if (userdata->last_interlaced) {
- height *= 2;
- }
- }
-
- movit::YCbCrLumaCoefficients ycbcr_coefficients = input_state.ycbcr_coefficients[signal_num];
- bool full_range = input_state.full_range[signal_num];
-
- if (input_state.ycbcr_coefficients_auto[signal_num]) {
- full_range = false;
-
- // The Blackmagic driver docs claim that the device outputs Y'CbCr
- // according to Rec. 601, but this seems to indicate the subsampling
- // positions only, as they publish Y'CbCr → RGB formulas that are
- // different for HD and SD (corresponding to Rec. 709 and 601, respectively),
- // and a Lenovo X1 gen 3 I used to test definitely outputs Rec. 709
- // (at least up to rounding error). Other devices seem to use Rec. 601
- // even on HD resolutions. Nevertheless, Rec. 709 _is_ the right choice
- // for HD, so we default to that if the user hasn't set anything.
- if (height >= 720) {
- ycbcr_coefficients = YCBCR_REC_709;
- } else {
- ycbcr_coefficients = YCBCR_REC_601;
- }
- }
-
- // This is a global, but it doesn't really matter.
- input_ycbcr_format.luma_coefficients = ycbcr_coefficients;
- input_ycbcr_format.full_range = full_range;
-
- BufferedFrame last_good_frame = first_frame;
- for (unsigned i = 0; i < max(ycbcr_inputs.size(), rgba_inputs.size()); ++i) {
- BufferedFrame frame = input_state.buffered_frames[signal_num][i];
- if (frame.frame == nullptr) {
- // Not enough data; reuse last frame (well, field).
- // This is suboptimal, but we have nothing better.
- frame = last_good_frame;
- }
- const PBOFrameAllocator::Userdata *userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
-
- unsigned this_width = userdata->last_width[frame.field_number];
- unsigned this_height = userdata->last_height[frame.field_number];
- if (this_width != width || this_height != height) {
- // Resolution changed; reuse last frame/field.
- frame = last_good_frame;
- userdata = (const PBOFrameAllocator::Userdata *)frame.frame->userdata;
- }
-
- assert(userdata->pixel_format == pixel_format);
- switch (pixel_format) {
- case bmusb::PixelFormat_8BitYCbCr:
- ycbcr_inputs[i]->set_texture_num(0, userdata->tex_y[frame.field_number]);
- ycbcr_inputs[i]->set_texture_num(1, userdata->tex_cbcr[frame.field_number]);
- ycbcr_inputs[i]->change_ycbcr_format(input_ycbcr_format);
- ycbcr_inputs[i]->set_width(width);
- ycbcr_inputs[i]->set_height(height);
- break;
- case bmusb::PixelFormat_8BitYCbCrPlanar:
- ycbcr_inputs[i]->set_texture_num(0, userdata->tex_y[frame.field_number]);
- ycbcr_inputs[i]->set_texture_num(1, userdata->tex_cb[frame.field_number]);
- ycbcr_inputs[i]->set_texture_num(2, userdata->tex_cr[frame.field_number]);
- ycbcr_inputs[i]->change_ycbcr_format(userdata->ycbcr_format);
- ycbcr_inputs[i]->set_width(width);
- ycbcr_inputs[i]->set_height(height);
- break;
- case bmusb::PixelFormat_10BitYCbCr:
- ycbcr_inputs[i]->set_texture_num(0, userdata->tex_444[frame.field_number]);
- ycbcr_inputs[i]->change_ycbcr_format(input_ycbcr_format);
- ycbcr_inputs[i]->set_width(width);
- ycbcr_inputs[i]->set_height(height);
- break;
- case bmusb::PixelFormat_8BitBGRA:
- rgba_inputs[i]->set_texture_num(userdata->tex_rgba[frame.field_number]);
- rgba_inputs[i]->set_width(width);
- rgba_inputs[i]->set_height(height);
- break;
- default:
- assert(false);
- }
-
- last_good_frame = frame;
- }
-
- if (deinterlace) {
- BufferedFrame frame = input_state.buffered_frames[signal_num][0];
- CHECK(deinterlace_effect->set_int("current_field_position", frame.field_number));
- }
-}
-
-namespace {
-
-int call_num_channels(lua_State *L)
-{
- lua_getglobal(L, "num_channels");
-
- if (lua_pcall(L, 0, 1, 0) != 0) {
- fprintf(stderr, "error running function `num_channels': %s\n", lua_tostring(L, -1));
- exit(1);
- }
-
- int num_channels = luaL_checknumber(L, 1);
- lua_pop(L, 1);
- assert(lua_gettop(L) == 0);
- return num_channels;
-}
-
-} // namespace
-
-Theme::Theme(const string &filename, const vector<string> &search_dirs, ResourcePool *resource_pool, unsigned num_cards)
- : resource_pool(resource_pool), num_cards(num_cards), signal_to_card_mapping(global_flags.default_stream_mapping)
-{
- L = luaL_newstate();
- luaL_openlibs(L);
-
- // Search through all directories until we find a file that will load
- // (as in, does not return LUA_ERRFILE); then run it. We store load errors
- // from all the attempts, and show them once we know we can't find any of them.
- lua_settop(L, 0);
- vector<string> errors;
- bool success = false;
-
- vector<string> real_search_dirs;
- if (!filename.empty() && filename[0] == '/') {
- real_search_dirs.push_back("");
- } else {
- real_search_dirs = search_dirs;
- }
-
- string path;
- int theme_code_ref;
- for (const string &dir : real_search_dirs) {
- if (dir.empty()) {
- path = filename;
- } else {
- path = dir + "/" + filename;
- }
- int err = luaL_loadfile(L, path.c_str());
- if (err == 0) {
- // Save the theme for when we're actually going to run it
- // (we need to set up the right environment below first,
- // and we couldn't do that before, because we didn't know the
- // path to put in Nageru.THEME_PATH).
- theme_code_ref = luaL_ref(L, LUA_REGISTRYINDEX);
- assert(lua_gettop(L) == 0);
-
- success = true;
- break;
- }
- errors.push_back(lua_tostring(L, -1));
- lua_pop(L, 1);
- if (err != LUA_ERRFILE) {
- // The file actually loaded, but failed to parse somehow. Abort; don't try the next one.
- break;
- }
- }
-
- if (!success) {
- for (const string &error : errors) {
- fprintf(stderr, "%s\n", error.c_str());
- }
- exit(1);
- }
- assert(lua_gettop(L) == 0);
-
- // Make sure the path exposed to the theme (as Nageru.THEME_PATH;
- // can be useful for locating files when talking to CEF) is absolute.
- // In a sense, it would be nice if realpath() had a mode not to
- // resolve symlinks, but it doesn't, so we only call it if we don't
- // already have an absolute path (which may leave ../ elements etc.).
- if (path[0] == '/') {
- theme_path = path;
- } else {
- char *absolute_theme_path = realpath(path.c_str(), nullptr);
- theme_path = absolute_theme_path;
- free(absolute_theme_path);
- }
-
- // Set up the API we provide.
- register_constants();
- register_class("EffectChain", EffectChain_funcs);
- register_class("LiveInputWrapper", LiveInputWrapper_funcs);
- register_class("ImageInput", ImageInput_funcs);
- register_class("VideoInput", VideoInput_funcs);
- register_class("HTMLInput", HTMLInput_funcs);
- register_class("WhiteBalanceEffect", WhiteBalanceEffect_funcs);
- register_class("ResampleEffect", ResampleEffect_funcs);
- register_class("PaddingEffect", PaddingEffect_funcs);
- register_class("IntegralPaddingEffect", IntegralPaddingEffect_funcs);
- register_class("OverlayEffect", OverlayEffect_funcs);
- register_class("ResizeEffect", ResizeEffect_funcs);
- register_class("MultiplyEffect", MultiplyEffect_funcs);
- register_class("MixEffect", MixEffect_funcs);
- register_class("LiftGammaGainEffect", LiftGammaGainEffect_funcs);
- register_class("InputStateInfo", InputStateInfo_funcs);
- register_class("ThemeMenu", ThemeMenu_funcs);
-
- // Now actually run the theme to get everything set up.
- lua_rawgeti(L, LUA_REGISTRYINDEX, theme_code_ref);
- luaL_unref(L, LUA_REGISTRYINDEX, theme_code_ref);
- if (lua_pcall(L, 0, 0, 0)) {
- fprintf(stderr, "Error when running %s: %s\n", path.c_str(), lua_tostring(L, -1));
- exit(1);
- }
- assert(lua_gettop(L) == 0);
-
- // Ask it for the number of channels.
- num_channels = call_num_channels(L);
-}
-
-Theme::~Theme()
-{
- lua_close(L);
-}
-
-void Theme::register_constants()
-{
- // Set Nageru.VIDEO_FORMAT_BGRA = bmusb::PixelFormat_8BitBGRA, etc.
- const vector<pair<string, int>> num_constants = {
- { "VIDEO_FORMAT_BGRA", bmusb::PixelFormat_8BitBGRA },
- { "VIDEO_FORMAT_YCBCR", bmusb::PixelFormat_8BitYCbCrPlanar },
- };
- const vector<pair<string, string>> str_constants = {
- { "THEME_PATH", theme_path },
- };
-
- lua_newtable(L); // t = {}
-
- for (const pair<string, int> &constant : num_constants) {
- lua_pushstring(L, constant.first.c_str());
- lua_pushinteger(L, constant.second);
- lua_settable(L, 1); // t[key] = value
- }
- for (const pair<string, string> &constant : str_constants) {
- lua_pushstring(L, constant.first.c_str());
- lua_pushstring(L, constant.second.c_str());
- lua_settable(L, 1); // t[key] = value
- }
-
- lua_setglobal(L, "Nageru"); // Nageru = t
- assert(lua_gettop(L) == 0);
-}
-
-void Theme::register_class(const char *class_name, const luaL_Reg *funcs)
-{
- assert(lua_gettop(L) == 0);
- luaL_newmetatable(L, class_name); // mt = {}
- lua_pushlightuserdata(L, this);
- luaL_setfuncs(L, funcs, 1); // for (name,f in funcs) { mt[name] = f, with upvalue {theme} }
- lua_pushvalue(L, -1);
- lua_setfield(L, -2, "__index"); // mt.__index = mt
- lua_setglobal(L, class_name); // ClassName = mt
- assert(lua_gettop(L) == 0);
-}
-
-Theme::Chain Theme::get_chain(unsigned num, float t, unsigned width, unsigned height, InputState input_state)
-{
- Chain chain;
-
- unique_lock<mutex> lock(m);
- assert(lua_gettop(L) == 0);
- lua_getglobal(L, "get_chain"); /* function to be called */
- lua_pushnumber(L, num);
- lua_pushnumber(L, t);
- lua_pushnumber(L, width);
- lua_pushnumber(L, height);
- wrap_lua_object<InputStateInfo>(L, "InputStateInfo", input_state);
-
- if (lua_pcall(L, 5, 2, 0) != 0) {
- fprintf(stderr, "error running function `get_chain': %s\n", lua_tostring(L, -1));
- exit(1);
- }
-
- EffectChain *effect_chain = (EffectChain *)luaL_testudata(L, -2, "EffectChain");
- if (effect_chain == nullptr) {
- fprintf(stderr, "get_chain() for chain number %d did not return an EffectChain\n",
- num);
- exit(1);
- }
- chain.chain = effect_chain;
- if (!lua_isfunction(L, -1)) {
- fprintf(stderr, "Argument #-1 should be a function\n");
- exit(1);
- }
- lua_pushvalue(L, -1);
- shared_ptr<LuaRefWithDeleter> funcref(new LuaRefWithDeleter(&m, L, luaL_ref(L, LUA_REGISTRYINDEX)));
- lua_pop(L, 2);
- assert(lua_gettop(L) == 0);
-
- chain.setup_chain = [this, funcref, input_state, effect_chain]{
- unique_lock<mutex> lock(m);
-
- assert(this->input_state == nullptr);
- this->input_state = &input_state;
-
- // Set up state, including connecting signals.
- lua_rawgeti(L, LUA_REGISTRYINDEX, funcref->get());
- if (lua_pcall(L, 0, 0, 0) != 0) {
- fprintf(stderr, "error running chain setup callback: %s\n", lua_tostring(L, -1));
- exit(1);
- }
- assert(lua_gettop(L) == 0);
-
- // The theme can't (or at least shouldn't!) call connect_signal() on
- // each FFmpeg or CEF input, so we'll do it here.
- if (video_signal_connections.count(effect_chain)) {
- for (const VideoSignalConnection &conn : video_signal_connections[effect_chain]) {
- conn.wrapper->connect_signal_raw(conn.source->get_card_index(), input_state);
- }
- }
-#ifdef HAVE_CEF
- if (html_signal_connections.count(effect_chain)) {
- for (const CEFSignalConnection &conn : html_signal_connections[effect_chain]) {
- conn.wrapper->connect_signal_raw(conn.source->get_card_index(), input_state);
- }
- }
-#endif
-
- this->input_state = nullptr;
- };
-
- // TODO: Can we do better, e.g. by running setup_chain() and seeing what it references?
- // Actually, setup_chain does maybe hold all the references we need now anyway?
- chain.input_frames.reserve(num_cards * FRAME_HISTORY_LENGTH);
- for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
- for (unsigned frame_num = 0; frame_num < FRAME_HISTORY_LENGTH; ++frame_num) {
- chain.input_frames.push_back(input_state.buffered_frames[card_index][frame_num].frame);
- }
- }
-
- return chain;
-}
-
-string Theme::get_channel_name(unsigned channel)
-{
- unique_lock<mutex> lock(m);
- lua_getglobal(L, "channel_name");
- lua_pushnumber(L, channel);
- if (lua_pcall(L, 1, 1, 0) != 0) {
- fprintf(stderr, "error running function `channel_name': %s\n", lua_tostring(L, -1));
- exit(1);
- }
- const char *ret = lua_tostring(L, -1);
- if (ret == nullptr) {
- fprintf(stderr, "function `channel_name' returned nil for channel %d\n", channel);
- exit(1);
- }
-
- string retstr = ret;
- lua_pop(L, 1);
- assert(lua_gettop(L) == 0);
- return retstr;
-}
-
-int Theme::get_channel_signal(unsigned channel)
-{
- unique_lock<mutex> lock(m);
- lua_getglobal(L, "channel_signal");
- lua_pushnumber(L, channel);
- if (lua_pcall(L, 1, 1, 0) != 0) {
- fprintf(stderr, "error running function `channel_signal': %s\n", lua_tostring(L, -1));
- exit(1);
- }
-
- int ret = luaL_checknumber(L, 1);
- lua_pop(L, 1);
- assert(lua_gettop(L) == 0);
- return ret;
-}
-
-std::string Theme::get_channel_color(unsigned channel)
-{
- unique_lock<mutex> lock(m);
- lua_getglobal(L, "channel_color");
- lua_pushnumber(L, channel);
- if (lua_pcall(L, 1, 1, 0) != 0) {
- fprintf(stderr, "error running function `channel_color': %s\n", lua_tostring(L, -1));
- exit(1);
- }
-
- const char *ret = lua_tostring(L, -1);
- if (ret == nullptr) {
- fprintf(stderr, "function `channel_color' returned nil for channel %d\n", channel);
- exit(1);
- }
-
- string retstr = ret;
- lua_pop(L, 1);
- assert(lua_gettop(L) == 0);
- return retstr;
-}
-
-bool Theme::get_supports_set_wb(unsigned channel)
-{
- unique_lock<mutex> lock(m);
- lua_getglobal(L, "supports_set_wb");
- lua_pushnumber(L, channel);
- if (lua_pcall(L, 1, 1, 0) != 0) {
- fprintf(stderr, "error running function `supports_set_wb': %s\n", lua_tostring(L, -1));
- exit(1);
- }
-
- bool ret = checkbool(L, -1);
- lua_pop(L, 1);
- assert(lua_gettop(L) == 0);
- return ret;
-}
-
-void Theme::set_wb(unsigned channel, double r, double g, double b)
-{
- unique_lock<mutex> lock(m);
- lua_getglobal(L, "set_wb");
- lua_pushnumber(L, channel);
- lua_pushnumber(L, r);
- lua_pushnumber(L, g);
- lua_pushnumber(L, b);
- if (lua_pcall(L, 4, 0, 0) != 0) {
- fprintf(stderr, "error running function `set_wb': %s\n", lua_tostring(L, -1));
- exit(1);
- }
-
- assert(lua_gettop(L) == 0);
-}
-
-vector<string> Theme::get_transition_names(float t)
-{
- unique_lock<mutex> lock(m);
- lua_getglobal(L, "get_transitions");
- lua_pushnumber(L, t);
- if (lua_pcall(L, 1, 1, 0) != 0) {
- fprintf(stderr, "error running function `get_transitions': %s\n", lua_tostring(L, -1));
- exit(1);
- }
-
- vector<string> ret;
- lua_pushnil(L);
- while (lua_next(L, -2) != 0) {
- ret.push_back(lua_tostring(L, -1));
- lua_pop(L, 1);
- }
- lua_pop(L, 1);
- assert(lua_gettop(L) == 0);
- return ret;
-}
-
-int Theme::map_signal(int signal_num)
-{
- // Negative numbers map to raw signals.
- if (signal_num < 0) {
- return -1 - signal_num;
- }
-
- unique_lock<mutex> lock(map_m);
- if (signal_to_card_mapping.count(signal_num)) {
- return signal_to_card_mapping[signal_num];
- }
-
- int card_index;
- if (global_flags.output_card != -1 && num_cards > 1) {
- // Try to exclude the output card from the default card_index.
- card_index = signal_num % (num_cards - 1);
- if (card_index >= global_flags.output_card) {
- ++card_index;
- }
- if (signal_num >= int(num_cards - 1)) {
- fprintf(stderr, "WARNING: Theme asked for input %d, but we only have %u input card(s) (card %d is busy with output).\n",
- signal_num, num_cards - 1, global_flags.output_card);
- fprintf(stderr, "Mapping to card %d instead.\n", card_index);
- }
- } else {
- card_index = signal_num % num_cards;
- if (signal_num >= int(num_cards)) {
- fprintf(stderr, "WARNING: Theme asked for input %d, but we only have %u card(s).\n", signal_num, num_cards);
- fprintf(stderr, "Mapping to card %d instead.\n", card_index);
- }
- }
- signal_to_card_mapping[signal_num] = card_index;
- return card_index;
-}
-
-void Theme::set_signal_mapping(int signal_num, int card_num)
-{
- unique_lock<mutex> lock(map_m);
- assert(card_num < int(num_cards));
- signal_to_card_mapping[signal_num] = card_num;
-}
-
-void Theme::transition_clicked(int transition_num, float t)
-{
- unique_lock<mutex> lock(m);
- lua_getglobal(L, "transition_clicked");
- lua_pushnumber(L, transition_num);
- lua_pushnumber(L, t);
-
- if (lua_pcall(L, 2, 0, 0) != 0) {
- fprintf(stderr, "error running function `transition_clicked': %s\n", lua_tostring(L, -1));
- exit(1);
- }
- assert(lua_gettop(L) == 0);
-}
-
-void Theme::channel_clicked(int preview_num)
-{
- unique_lock<mutex> lock(m);
- lua_getglobal(L, "channel_clicked");
- lua_pushnumber(L, preview_num);
-
- if (lua_pcall(L, 1, 0, 0) != 0) {
- fprintf(stderr, "error running function `channel_clicked': %s\n", lua_tostring(L, -1));
- exit(1);
- }
- assert(lua_gettop(L) == 0);
-}
-
-int Theme::set_theme_menu(lua_State *L)
-{
- for (const Theme::MenuEntry &entry : theme_menu) {
- luaL_unref(L, LUA_REGISTRYINDEX, entry.lua_ref);
- }
- theme_menu.clear();
-
- int num_elements = lua_gettop(L);
- for (int i = 1; i <= num_elements; ++i) {
- lua_rawgeti(L, i, 1);
- const string text = checkstdstring(L, -1);
- lua_pop(L, 1);
-
- lua_rawgeti(L, i, 2);
- luaL_checktype(L, -1, LUA_TFUNCTION);
- int ref = luaL_ref(L, LUA_REGISTRYINDEX);
-
- theme_menu.push_back(MenuEntry{ text, ref });
- }
- lua_pop(L, num_elements);
- assert(lua_gettop(L) == 0);
-
- if (theme_menu_callback != nullptr) {
- theme_menu_callback();
- }
-
- return 0;
-}
-
-void Theme::theme_menu_entry_clicked(int lua_ref)
-{
- unique_lock<mutex> lock(m);
- lua_rawgeti(L, LUA_REGISTRYINDEX, lua_ref);
- if (lua_pcall(L, 0, 0, 0) != 0) {
- fprintf(stderr, "error running menu callback: %s\n", lua_tostring(L, -1));
- exit(1);
- }
-}
projects / nageru / blobdiff