-#include <stdio.h>
+#include "theme.h"
+
+#include <assert.h>
+#include <lauxlib.h>
#include <lua.h>
#include <lualib.h>
-#include <lauxlib.h>
-#include <new>
-#include <utility>
-
+#include <movit/effect.h>
#include <movit/effect_chain.h>
-#include <movit/ycbcr_input.h>
-#include <movit/white_balance_effect.h>
-#include <movit/resample_effect.h>
-#include <movit/padding_effect.h>
+#include <movit/image_format.h>
+#include <movit/mix_effect.h>
#include <movit/overlay_effect.h>
+#include <movit/padding_effect.h>
+#include <movit/resample_effect.h>
#include <movit/resize_effect.h>
-#include <movit/mix_effect.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 <new>
+#include <utility>
-#include "theme.h"
+namespace movit {
+class ResourcePool;
+} // namespace movit
#define WIDTH 1280 // FIXME
#define HEIGHT 720 // FIXME
// what's put in the H.264 stream (sps_rbsp()).
ImageFormat inout_format;
inout_format.color_space = COLORSPACE_REC_709;
- inout_format.gamma_curve = GAMMA_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 in the end, but chroma subsampling
// happens in a pass not run by Movit (see Mixer::subsample_chroma()).
output_ycbcr_format.chroma_subsampling_x = 1;
output_ycbcr_format.chroma_subsampling_y = 1;
- output_ycbcr_format.luma_coefficients = YCBCR_REC_709;
+
+ // Rec. 709 would be the sane thing to do, but it seems many players
+ // (e.g. MPlayer and VLC) just default to BT.601 coefficients no matter
+ // what (see discussions in e.g. https://trac.ffmpeg.org/ticket/4978).
+ // We _do_ set the right flags, though, so that a player that works
+ // properly doesn't have to guess.
+ output_ycbcr_format.luma_coefficients = YCBCR_REC_601;
output_ycbcr_format.full_range = false;
output_ycbcr_format.num_levels = 256;
{
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;
// The Blackmagic driver docs claim that the device outputs Y'CbCr
theme->connect_signal(input, signal_num);
}
-Theme::Theme(const char *filename, ResourcePool *resource_pool)
- : resource_pool(resource_pool)
+Theme::Theme(const char *filename, ResourcePool *resource_pool, unsigned num_cards)
+ : resource_pool(resource_pool), num_cards(num_cards)
{
L = luaL_newstate();
luaL_openlibs(L);
});
}
+std::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_nam': %s\n", lua_tostring(L, -1));
+ exit(1);
+ }
+
+ std::string ret = lua_tostring(L, -1);
+ lua_pop(L, 1);
+ assert(lua_gettop(L) == 0);
+ return ret;
+}
+
+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;
+}
+
std::vector<std::string> Theme::get_transition_names(float t)
{
unique_lock<mutex> lock(m);
void Theme::connect_signal(YCbCrInput *input, int signal_num)
{
+ if (signal_num >= int(num_cards)) {
+ if (signals_warned_about.insert(signal_num).second) {
+ 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", signal_num % num_cards);
+ }
+ signal_num %= num_cards;
+ }
input->set_texture_num(0, input_textures[signal_num].tex_y);
input->set_texture_num(1, input_textures[signal_num].tex_cbcr);
}