#include "mixer.h"
#include <assert.h>
-#include <endian.h>
#include <epoxy/egl.h>
#include <movit/effect_chain.h>
#include <movit/effect_util.h>
#include <movit/image_format.h>
#include <movit/init.h>
#include <movit/resource_pool.h>
-#include <movit/util.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
-#include <sys/time.h>
-#include <time.h>
+#include <sys/resource.h>
#include <algorithm>
#include <chrono>
-#include <cmath>
#include <condition_variable>
#include <cstddef>
+#include <cstdint>
#include <memory>
#include <mutex>
+#include <ratio>
#include <string>
#include <thread>
#include <utility>
#include <vector>
-#include <arpa/inet.h>
-#include <sys/time.h>
-#include <sys/resource.h>
+#include "DeckLinkAPI.h"
+#include "LinuxCOM.h"
+#include "alsa_output.h"
#include "bmusb/bmusb.h"
#include "bmusb/fake_capture.h"
+#include "chroma_subsampler.h"
#include "context.h"
#include "decklink_capture.h"
+#include "decklink_output.h"
#include "defs.h"
#include "disk_space_estimator.h"
#include "flags.h"
-#include "video_encoder.h"
+#include "input_mapping.h"
#include "pbo_frame_allocator.h"
#include "ref_counted_gl_sync.h"
+#include "resampling_queue.h"
#include "timebase.h"
+#include "video_encoder.h"
+class IDeckLink;
class QOpenGLContext;
using namespace movit;
num_cards(num_cards),
mixer_surface(create_surface(format)),
h264_encoder_surface(create_surface(format)),
- audio_mixer(num_cards),
- correlation(OUTPUT_FREQUENCY)
+ decklink_output_surface(create_surface(format)),
+ audio_mixer(num_cards)
{
CHECK(init_movit(MOVIT_SHADER_DIR, MOVIT_DEBUG_OFF));
check_error();
inout_format.gamma_curve = GAMMA_sRGB;
// Display chain; shows the live output produced by the main chain (its RGBA version).
- display_chain.reset(new EffectChain(WIDTH, HEIGHT, resource_pool.get()));
+ display_chain.reset(new EffectChain(global_flags.width, global_flags.height, resource_pool.get()));
check_error();
- display_input = new FlatInput(inout_format, FORMAT_RGB, GL_UNSIGNED_BYTE, WIDTH, HEIGHT); // FIXME: GL_UNSIGNED_BYTE is really wrong.
+ display_input = new FlatInput(inout_format, FORMAT_RGB, GL_UNSIGNED_BYTE, global_flags.width, global_flags.height); // FIXME: GL_UNSIGNED_BYTE is really wrong.
display_chain->add_input(display_input);
display_chain->add_output(inout_format, OUTPUT_ALPHA_FORMAT_POSTMULTIPLIED);
display_chain->set_dither_bits(0); // Don't bother.
display_chain->finalize();
- video_encoder.reset(new VideoEncoder(resource_pool.get(), h264_encoder_surface, global_flags.va_display, WIDTH, HEIGHT, &httpd, global_disk_space_estimator));
+ video_encoder.reset(new VideoEncoder(resource_pool.get(), h264_encoder_surface, global_flags.va_display, global_flags.width, global_flags.height, &httpd, global_disk_space_estimator));
// Start listening for clients only once VideoEncoder has written its header, if any.
httpd.start(9095);
break;
}
- configure_card(card_index, new DeckLinkCapture(decklink, card_index), /*is_fake_capture=*/false);
+ DeckLinkCapture *capture = new DeckLinkCapture(decklink, card_index);
+ DeckLinkOutput *output = new DeckLinkOutput(resource_pool.get(), decklink_output_surface, global_flags.width, global_flags.height, card_index);
+ output->set_device(decklink);
+ configure_card(card_index, capture, /*is_fake_capture=*/false, output);
++num_pci_devices;
}
decklink_iterator->Release();
fprintf(stderr, "DeckLink drivers not found. Probing for USB cards only.\n");
}
}
+
unsigned num_usb_devices = BMUSBCapture::num_cards();
for (unsigned usb_card_index = 0; usb_card_index < num_usb_devices && card_index < num_cards; ++usb_card_index, ++card_index) {
BMUSBCapture *capture = new BMUSBCapture(usb_card_index);
capture->set_card_disconnected_callback(bind(&Mixer::bm_hotplug_remove, this, card_index));
- configure_card(card_index, capture, /*is_fake_capture=*/false);
+ configure_card(card_index, capture, /*is_fake_capture=*/false, /*output=*/nullptr);
}
fprintf(stderr, "Found %u USB card(s).\n", num_usb_devices);
unsigned num_fake_cards = 0;
for ( ; card_index < num_cards; ++card_index, ++num_fake_cards) {
- FakeCapture *capture = new FakeCapture(WIDTH, HEIGHT, FAKE_FPS, OUTPUT_FREQUENCY, card_index, global_flags.fake_cards_audio);
- configure_card(card_index, capture, /*is_fake_capture=*/true);
+ FakeCapture *capture = new FakeCapture(global_flags.width, global_flags.height, FAKE_FPS, OUTPUT_FREQUENCY, card_index, global_flags.fake_cards_audio);
+ configure_card(card_index, capture, /*is_fake_capture=*/true, /*output=*/nullptr);
}
if (num_fake_cards > 0) {
BMUSBCapture::set_card_connected_callback(bind(&Mixer::bm_hotplug_add, this, _1));
BMUSBCapture::start_bm_thread();
- for (card_index = 0; card_index < num_cards; ++card_index) {
+ for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
cards[card_index].queue_length_policy.reset(card_index);
- cards[card_index].capture->start_bm_capture();
}
- // Set up stuff for NV12 conversion.
-
- // Cb/Cr shader.
- string cbcr_vert_shader =
- "#version 130 \n"
- " \n"
- "in vec2 position; \n"
- "in vec2 texcoord; \n"
- "out vec2 tc0; \n"
- "uniform vec2 foo_chroma_offset_0; \n"
- " \n"
- "void main() \n"
- "{ \n"
- " // The result of glOrtho(0.0, 1.0, 0.0, 1.0, 0.0, 1.0) is: \n"
- " // \n"
- " // 2.000 0.000 0.000 -1.000 \n"
- " // 0.000 2.000 0.000 -1.000 \n"
- " // 0.000 0.000 -2.000 -1.000 \n"
- " // 0.000 0.000 0.000 1.000 \n"
- " gl_Position = vec4(2.0 * position.x - 1.0, 2.0 * position.y - 1.0, -1.0, 1.0); \n"
- " vec2 flipped_tc = texcoord; \n"
- " tc0 = flipped_tc + foo_chroma_offset_0; \n"
- "} \n";
- string cbcr_frag_shader =
- "#version 130 \n"
- "in vec2 tc0; \n"
- "uniform sampler2D cbcr_tex; \n"
- "out vec4 FragColor; \n"
- "void main() { \n"
- " FragColor = texture(cbcr_tex, tc0); \n"
- "} \n";
- vector<string> frag_shader_outputs;
- cbcr_program_num = resource_pool->compile_glsl_program(cbcr_vert_shader, cbcr_frag_shader, frag_shader_outputs);
-
- float vertices[] = {
- 0.0f, 2.0f,
- 0.0f, 0.0f,
- 2.0f, 0.0f
- };
- cbcr_vbo = generate_vbo(2, GL_FLOAT, sizeof(vertices), vertices);
- cbcr_position_attribute_index = glGetAttribLocation(cbcr_program_num, "position");
- cbcr_texcoord_attribute_index = glGetAttribLocation(cbcr_program_num, "texcoord");
-
- r128.init(2, OUTPUT_FREQUENCY);
- r128.integr_start();
-
- // hlen=16 is pretty low quality, but we use quite a bit of CPU otherwise,
- // and there's a limit to how important the peak meter is.
- peak_resampler.setup(OUTPUT_FREQUENCY, OUTPUT_FREQUENCY * 4, /*num_channels=*/2, /*hlen=*/16, /*frel=*/1.0);
+ chroma_subsampler.reset(new ChromaSubsampler(resource_pool.get()));
if (global_flags.enable_alsa_output) {
alsa.reset(new ALSAOutput(OUTPUT_FREQUENCY, /*num_channels=*/2));
}
+ if (global_flags.output_card != -1) {
+ set_output_card(global_flags.output_card);
+ }
}
Mixer::~Mixer()
{
- resource_pool->release_glsl_program(cbcr_program_num);
- glDeleteBuffers(1, &cbcr_vbo);
BMUSBCapture::stop_bm_thread();
for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
{
- unique_lock<mutex> lock(bmusb_mutex);
+ unique_lock<mutex> lock(card_mutex);
cards[card_index].should_quit = true; // Unblock thread.
cards[card_index].new_frames_changed.notify_all();
}
video_encoder.reset(nullptr);
}
-void Mixer::configure_card(unsigned card_index, CaptureInterface *capture, bool is_fake_capture)
+void Mixer::configure_card(unsigned card_index, CaptureInterface *capture, bool is_fake_capture, DeckLinkOutput *output)
{
printf("Configuring card %d...\n", card_index);
}
card->capture = capture;
card->is_fake_capture = is_fake_capture;
+ card->output = output;
card->capture->set_frame_callback(bind(&Mixer::bm_frame, this, card_index, _1, _2, _3, _4, _5, _6, _7));
if (card->frame_allocator == nullptr) {
- card->frame_allocator.reset(new PBOFrameAllocator(8 << 20, WIDTH, HEIGHT)); // 8 MB.
+ card->frame_allocator.reset(new PBOFrameAllocator(8 << 20, global_flags.width, global_flags.height)); // 8 MB.
}
card->capture->set_video_frame_allocator(card->frame_allocator.get());
if (card->surface == nullptr) {
card->surface = create_surface_with_same_format(mixer_surface);
}
- audio_mixer.reset_card(card_index);
while (!card->new_frames.empty()) card->new_frames.pop();
- card->fractional_samples = 0;
card->last_timecode = -1;
card->capture->configure_card();
+
+ // NOTE: start_bm_capture() happens in thread_func().
+
+ DeviceSpec device{InputSourceType::CAPTURE_CARD, card_index};
+ audio_mixer.reset_resampler(device);
+ audio_mixer.set_display_name(device, card->capture->get_description());
+ audio_mixer.trigger_state_changed_callback();
}
+void Mixer::set_output_card(int card_index)
+{
+ if (card_index == output_card_index) {
+ return;
+ }
+ unique_lock<mutex> lock(card_mutex);
+ if (output_card_index != -1) {
+ // Switch the old card from output to input.
+ CaptureCard *old_card = &cards[output_card_index];
+ old_card->output->end_output();
+
+ old_card->capture->stop_dequeue_thread();
+ delete old_card->capture;
+
+ old_card->capture = old_card->parked_capture;
+ old_card->is_fake_capture = false;
+ old_card->parked_capture = nullptr;
+ old_card->capture->start_bm_capture();
+ }
+
+ CaptureCard *card = &cards[card_index];
+ card->capture->stop_dequeue_thread();
+ card->parked_capture = card->capture;
+ FakeCapture *capture = new FakeCapture(global_flags.width, global_flags.height, FAKE_FPS, OUTPUT_FREQUENCY, card_index, global_flags.fake_cards_audio);
+ configure_card(card_index, capture, /*is_fake_capture=*/true, card->output);
+ card->queue_length_policy.reset(card_index);
+ card->capture->start_bm_capture();
+ card->output->start_output(bmdModeHD720p5994, pts_int); // FIXME
+ output_card_index = card_index;
+}
namespace {
}
}
-float find_peak(const float *samples, size_t num_samples)
-{
- float m = fabs(samples[0]);
- for (size_t i = 1; i < num_samples; ++i) {
- m = max(m, fabs(samples[i]));
- }
- return m;
-}
-
-void deinterleave_samples(const vector<float> &in, vector<float> *out_l, vector<float> *out_r)
-{
- size_t num_samples = in.size() / 2;
- out_l->resize(num_samples);
- out_r->resize(num_samples);
-
- const float *inptr = in.data();
- float *lptr = &(*out_l)[0];
- float *rptr = &(*out_r)[0];
- for (size_t i = 0; i < num_samples; ++i) {
- *lptr++ = *inptr++;
- *rptr++ = *inptr++;
- }
-}
-
} // namespace
void Mixer::bm_frame(unsigned card_index, uint16_t timecode,
FrameAllocator::Frame video_frame, size_t video_offset, VideoFormat video_format,
FrameAllocator::Frame audio_frame, size_t audio_offset, AudioFormat audio_format)
{
+ DeviceSpec device{InputSourceType::CAPTURE_CARD, card_index};
CaptureCard *card = &cards[card_index];
if (is_mode_scanning[card_index]) {
// Found a stable signal, so stop scanning.
is_mode_scanning[card_index] = false;
} else {
- static constexpr double switch_time_s = 0.5; // Should be enough time for the signal to stabilize.
+ static constexpr double switch_time_s = 0.1; // Should be enough time for the signal to stabilize.
steady_clock::time_point now = steady_clock::now();
double sec_since_last_switch = duration<double>(steady_clock::now() - last_mode_scan_change[card_index]).count();
if (sec_since_last_switch > switch_time_s) {
if (dropped_frames > MAX_FPS * 2) {
fprintf(stderr, "Card %d lost more than two seconds (or time code jumping around; from 0x%04x to 0x%04x), resetting resampler\n",
card_index, card->last_timecode, timecode);
- audio_mixer.reset_card(card_index);
+ audio_mixer.reset_resampler(device);
dropped_frames = 0;
} else if (dropped_frames > 0) {
// Insert silence as needed.
fprintf(stderr, "Card %d dropped %d frame(s) (before timecode 0x%04x), inserting silence.\n",
card_index, dropped_frames, timecode);
- audio_mixer.add_silence(card_index, silence_samples, dropped_frames, frame_length);
+ bool success;
+ do {
+ success = audio_mixer.add_silence(device, silence_samples, dropped_frames, frame_length);
+ } while (!success);
}
- audio_mixer.add_audio(card_index, audio_frame.data + audio_offset, num_samples, audio_format, frame_length);
+ audio_mixer.add_audio(device, audio_frame.data + audio_offset, num_samples, audio_format, frame_length);
// Done with the audio, so release it.
if (audio_frame.owner) {
// Still send on the information that we _had_ a frame, even though it's corrupted,
// so that pts can go up accordingly.
{
- unique_lock<mutex> lock(bmusb_mutex);
+ unique_lock<mutex> lock(card_mutex);
CaptureCard::NewFrame new_frame;
new_frame.frame = RefCountedFrame(FrameAllocator::Frame());
new_frame.length = frame_length;
unsigned num_fields = video_format.interlaced ? 2 : 1;
steady_clock::time_point frame_upload_start;
+ bool interlaced_stride = false;
if (video_format.interlaced) {
// Send the two fields along as separate frames; the other side will need to add
// a deinterlacer to actually get this right.
assert(frame_length % 2 == 0);
frame_length /= 2;
num_fields = 2;
+ if (video_format.second_field_start == 1) {
+ interlaced_stride = true;
+ }
frame_upload_start = steady_clock::now();
}
userdata->last_interlaced = video_format.interlaced;
// Note that this means we must hold on to the actual frame data in <userdata>
// until the upload command is run, but we hold on to <frame> much longer than that
// (in fact, all the way until we no longer use the texture in rendering).
- auto upload_func = [field, video_format, y_offset, cbcr_offset, cbcr_width, userdata]() {
- unsigned field_start_line = (field == 1) ? video_format.second_field_start : video_format.extra_lines_top + field * (video_format.height + 22);
+ auto upload_func = [field, video_format, y_offset, cbcr_offset, cbcr_width, interlaced_stride, userdata]() {
+ unsigned field_start_line;
+ if (field == 1) {
+ field_start_line = video_format.second_field_start;
+ } else {
+ field_start_line = video_format.extra_lines_top;
+ }
if (userdata->tex_y[field] == 0 ||
userdata->tex_cbcr[field] == 0 ||
glBindTexture(GL_TEXTURE_2D, userdata->tex_cbcr[field]);
check_error();
+ if (interlaced_stride) {
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, cbcr_width * 2);
+ check_error();
+ } else {
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+ check_error();
+ }
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, cbcr_width, video_format.height, GL_RG, GL_UNSIGNED_BYTE, BUFFER_OFFSET(field_cbcr_start));
check_error();
glBindTexture(GL_TEXTURE_2D, userdata->tex_y[field]);
check_error();
+ if (interlaced_stride) {
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, video_format.width * 2);
+ check_error();
+ } else {
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+ check_error();
+ }
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, video_format.width, video_format.height, GL_RED, GL_UNSIGNED_BYTE, BUFFER_OFFSET(field_y_start));
check_error();
glBindTexture(GL_TEXTURE_2D, 0);
check_error();
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
check_error();
+ glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
+ check_error();
};
if (field == 1) {
}
{
- unique_lock<mutex> lock(bmusb_mutex);
+ unique_lock<mutex> lock(card_mutex);
CaptureCard::NewFrame new_frame;
new_frame.frame = frame;
new_frame.length = frame_length;
new_frame.interlaced = video_format.interlaced;
new_frame.upload_func = upload_func;
new_frame.dropped_frames = dropped_frames;
+ new_frame.received_timestamp = video_frame.received_timestamp; // Ignore the audio timestamp.
card->new_frames.push(move(new_frame));
card->new_frames_changed.notify_all();
}
exit(1);
}
+ // Start the actual capture. (We don't want to do it before we're actually ready
+ // to process output frames.)
+ for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
+ if (int(card_index) != output_card_index) {
+ cards[card_index].capture->start_bm_capture();
+ }
+ }
+
steady_clock::time_point start, now;
start = steady_clock::now();
int stats_dropped_frames = 0;
while (!should_quit) {
- CaptureCard::NewFrame new_frames[MAX_CARDS];
- bool has_new_frame[MAX_CARDS] = { false };
- int num_samples[MAX_CARDS] = { 0 };
-
- unsigned master_card_index = theme->map_signal(master_clock_channel);
- assert(master_card_index < num_cards);
+ CaptureCard::NewFrame new_frames[MAX_VIDEO_CARDS];
+ bool has_new_frame[MAX_VIDEO_CARDS] = { false };
+
+ bool master_card_is_output;
+ unsigned master_card_index;
+ if (output_card_index != -1) {
+ master_card_is_output = true;
+ master_card_index = output_card_index;
+ } else {
+ master_card_is_output = false;
+ master_card_index = theme->map_signal(master_clock_channel);
+ assert(master_card_index < num_cards);
+ }
- get_one_frame_from_each_card(master_card_index, new_frames, has_new_frame, num_samples);
- schedule_audio_resampling_tasks(new_frames[master_card_index].dropped_frames, num_samples[master_card_index], new_frames[master_card_index].length);
- stats_dropped_frames += new_frames[master_card_index].dropped_frames;
- send_audio_level_callback();
+ OutputFrameInfo output_frame_info = get_one_frame_from_each_card(master_card_index, master_card_is_output, new_frames, has_new_frame);
+ schedule_audio_resampling_tasks(output_frame_info.dropped_frames, output_frame_info.num_samples, output_frame_info.frame_duration);
+ stats_dropped_frames += output_frame_info.dropped_frames;
handle_hotplugged_cards();
// If the first card is reporting a corrupted or otherwise dropped frame,
// just increase the pts (skipping over this frame) and don't try to compute anything new.
- if (new_frames[master_card_index].frame->len == 0) {
+ if (!master_card_is_output && new_frames[master_card_index].frame->len == 0) {
++stats_dropped_frames;
pts_int += new_frames[master_card_index].length;
continue;
}
}
- int64_t frame_duration = new_frames[master_card_index].length;
+ int64_t frame_duration = output_frame_info.frame_duration;
render_one_frame(frame_duration);
++frame;
pts_int += frame_duration;
assert(false);
}
- printf(", using %ld / %ld MB lockable memory (%.1f%%)",
- long(used.ru_maxrss / 1024),
- long(limit.rlim_cur / 1048576),
- float(100.0 * (used.ru_maxrss * 1024.0) / limit.rlim_cur));
+ if (limit.rlim_cur == 0) {
+ printf(", using %ld MB memory (locked)",
+ long(used.ru_maxrss / 1024));
+ } else {
+ printf(", using %ld / %ld MB lockable memory (%.1f%%)",
+ long(used.ru_maxrss / 1024),
+ long(limit.rlim_cur / 1048576),
+ float(100.0 * (used.ru_maxrss * 1024.0) / limit.rlim_cur));
+ }
} else {
printf(", using %ld MB memory (not locked)",
long(used.ru_maxrss / 1024));
resource_pool->clean_context();
}
-void Mixer::get_one_frame_from_each_card(unsigned master_card_index, CaptureCard::NewFrame new_frames[MAX_CARDS], bool has_new_frame[MAX_CARDS], int num_samples[MAX_CARDS])
+bool Mixer::input_card_is_master_clock(unsigned card_index, unsigned master_card_index) const
+{
+ if (output_card_index != -1) {
+ // The output card (ie., cards[output_card_index].output) is the master clock,
+ // so no input card (ie., cards[card_index].capture) is.
+ return false;
+ }
+ return (card_index == master_card_index);
+}
+
+Mixer::OutputFrameInfo Mixer::get_one_frame_from_each_card(unsigned master_card_index, bool master_card_is_output, CaptureCard::NewFrame new_frames[MAX_VIDEO_CARDS], bool has_new_frame[MAX_VIDEO_CARDS])
{
+ OutputFrameInfo output_frame_info;
start:
- // The first card is the master timer, so wait for it to have a new frame.
- // TODO: Add a timeout.
- unique_lock<mutex> lock(bmusb_mutex);
- cards[master_card_index].new_frames_changed.wait(lock, [this, master_card_index]{ return !cards[master_card_index].new_frames.empty() || cards[master_card_index].capture->get_disconnected(); });
+ unique_lock<mutex> lock(card_mutex, defer_lock);
+ if (master_card_is_output) {
+ // Clocked to the output, so wait for it to be ready for the next frame.
+ cards[master_card_index].output->wait_for_frame(pts_int, &output_frame_info.dropped_frames, &output_frame_info.frame_duration);
+ lock.lock();
+ } else {
+ // Wait for the master card to have a new frame.
+ // TODO: Add a timeout.
+ lock.lock();
+ cards[master_card_index].new_frames_changed.wait(lock, [this, master_card_index]{ return !cards[master_card_index].new_frames.empty() || cards[master_card_index].capture->get_disconnected(); });
+ }
- if (cards[master_card_index].new_frames.empty()) {
+ if (master_card_is_output) {
+ handle_hotplugged_cards();
+ } else if (cards[master_card_index].new_frames.empty()) {
// We were woken up, but not due to a new frame. Deal with it
// and then restart.
assert(cards[master_card_index].capture->get_disconnected());
for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
CaptureCard *card = &cards[card_index];
if (card->new_frames.empty()) {
- assert(card_index != master_card_index);
+ assert(!input_card_is_master_clock(card_index, master_card_index));
card->queue_length_policy.update_policy(-1);
continue;
}
card->new_frames.pop();
card->new_frames_changed.notify_all();
- int num_samples_times_timebase = OUTPUT_FREQUENCY * new_frames[card_index].length + card->fractional_samples;
- num_samples[card_index] = num_samples_times_timebase / TIMEBASE;
- card->fractional_samples = num_samples_times_timebase % TIMEBASE;
- assert(num_samples[card_index] >= 0);
-
- if (card_index == master_card_index) {
+ if (input_card_is_master_clock(card_index, master_card_index)) {
// We don't use the queue length policy for the master card,
// but we will if it stops being the master. Thus, clear out
// the policy in case we switch in the future.
}
}
}
+
+ if (!master_card_is_output) {
+ output_frame_info.dropped_frames = new_frames[master_card_index].dropped_frames;
+ output_frame_info.frame_duration = new_frames[master_card_index].length;
+ }
+
+ // This might get off by a fractional sample when changing master card
+ // between ones with different frame rates, but that's fine.
+ int num_samples_times_timebase = OUTPUT_FREQUENCY * output_frame_info.frame_duration + fractional_samples;
+ output_frame_info.num_samples = num_samples_times_timebase / TIMEBASE;
+ fractional_samples = num_samples_times_timebase % TIMEBASE;
+ assert(output_frame_info.num_samples >= 0);
+
+ return output_frame_info;
}
void Mixer::handle_hotplugged_cards()
CaptureCard *card = &cards[card_index];
if (card->capture->get_disconnected()) {
fprintf(stderr, "Card %u went away, replacing with a fake card.\n", card_index);
- FakeCapture *capture = new FakeCapture(WIDTH, HEIGHT, FAKE_FPS, OUTPUT_FREQUENCY, card_index, global_flags.fake_cards_audio);
- configure_card(card_index, capture, /*is_fake_capture=*/true);
+ FakeCapture *capture = new FakeCapture(global_flags.width, global_flags.height, FAKE_FPS, OUTPUT_FREQUENCY, card_index, global_flags.fake_cards_audio);
+ configure_card(card_index, capture, /*is_fake_capture=*/true, /*output=*/nullptr);
card->queue_length_policy.reset(card_index);
card->capture->start_bm_capture();
}
int free_card_index = -1;
for (unsigned card_index = 0; card_index < num_cards; ++card_index) {
if (cards[card_index].is_fake_capture) {
- free_card_index = int(card_index);
+ free_card_index = card_index;
break;
}
}
fprintf(stderr, "New card plugged in, choosing slot %d.\n", free_card_index);
CaptureCard *card = &cards[free_card_index];
BMUSBCapture *capture = new BMUSBCapture(free_card_index, new_dev);
- configure_card(free_card_index, capture, /*is_fake_capture=*/false);
+ configure_card(free_card_index, capture, /*is_fake_capture=*/false, /*output=*/nullptr);
card->queue_length_policy.reset(free_card_index);
capture->set_card_disconnected_callback(bind(&Mixer::bm_hotplug_remove, this, free_card_index));
capture->start_bm_capture();
void Mixer::render_one_frame(int64_t duration)
{
// Get the main chain from the theme, and set its state immediately.
- Theme::Chain theme_main_chain = theme->get_chain(0, pts(), WIDTH, HEIGHT, input_state);
+ Theme::Chain theme_main_chain = theme->get_chain(0, pts(), global_flags.width, global_flags.height, input_state);
EffectChain *chain = theme_main_chain.chain;
theme_main_chain.setup_chain();
//theme_main_chain.chain->enable_phase_timing(true);
assert(got_frame);
// Render main chain.
- GLuint cbcr_full_tex = resource_pool->create_2d_texture(GL_RG8, WIDTH, HEIGHT);
- GLuint rgba_tex = resource_pool->create_2d_texture(GL_RGB565, WIDTH, HEIGHT); // Saves texture bandwidth, although dithering gets messed up.
+ GLuint cbcr_full_tex = resource_pool->create_2d_texture(GL_RG8, global_flags.width, global_flags.height);
+ GLuint rgba_tex = resource_pool->create_2d_texture(GL_RGB565, global_flags.width, global_flags.height); // Saves texture bandwidth, although dithering gets messed up.
GLuint fbo = resource_pool->create_fbo(y_tex, cbcr_full_tex, rgba_tex);
check_error();
- chain->render_to_fbo(fbo, WIDTH, HEIGHT);
+ chain->render_to_fbo(fbo, global_flags.width, global_flags.height);
resource_pool->release_fbo(fbo);
- subsample_chroma(cbcr_full_tex, cbcr_tex);
+ chroma_subsampler->subsample_chroma(cbcr_full_tex, global_flags.width, global_flags.height, cbcr_tex);
+ if (output_card_index != -1) {
+ cards[output_card_index].output->send_frame(y_tex, cbcr_full_tex, theme_main_chain.input_frames, pts_int, duration);
+ }
resource_pool->release_2d_texture(cbcr_full_tex);
// Set the right state for rgba_tex.
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
- const int64_t av_delay = TIMEBASE / 10; // Corresponds to the fixed delay in resampling_queue.h. TODO: Make less hard-coded.
+ const int64_t av_delay = lrint(global_flags.audio_queue_length_ms * 0.001 * TIMEBASE); // Corresponds to the delay in ResamplingQueue.
RefCountedGLsync fence = video_encoder->end_frame(pts_int + av_delay, duration, theme_main_chain.input_frames);
// The live frame just shows the RGBA texture we just rendered.
// Set up preview and any additional channels.
for (int i = 1; i < theme->get_num_channels() + 2; ++i) {
DisplayFrame display_frame;
- Theme::Chain chain = theme->get_chain(i, pts(), WIDTH, HEIGHT, input_state); // FIXME: dimensions
+ Theme::Chain chain = theme->get_chain(i, pts(), global_flags.width, global_flags.height, input_state); // FIXME: dimensions
display_frame.chain = chain.chain;
display_frame.setup_chain = chain.setup_chain;
display_frame.ready_fence = fence;
}
}
-void Mixer::send_audio_level_callback()
-{
- if (audio_level_callback == nullptr) {
- return;
- }
-
- unique_lock<mutex> lock(audio_measure_mutex);
- double loudness_s = r128.loudness_S();
- double loudness_i = r128.integrated();
- double loudness_range_low = r128.range_min();
- double loudness_range_high = r128.range_max();
-
- audio_level_callback(loudness_s, 20.0 * log10(peak),
- loudness_i, loudness_range_low, loudness_range_high,
- audio_mixer.get_gain_staging_db(),
- audio_mixer.get_final_makeup_gain_db(),
- correlation.get_correlation());
-}
-
void Mixer::audio_thread_func()
{
while (!should_quit) {
ResamplingQueue::RateAdjustmentPolicy rate_adjustment_policy =
task.adjust_rate ? ResamplingQueue::ADJUST_RATE : ResamplingQueue::DO_NOT_ADJUST_RATE;
- process_audio_one_frame(task.pts_int, task.num_samples, rate_adjustment_policy);
- }
-}
-
-void Mixer::process_audio_one_frame(int64_t frame_pts_int, int num_samples, ResamplingQueue::RateAdjustmentPolicy rate_adjustment_policy)
-{
- vector<float> samples_out = audio_mixer.get_output(double(frame_pts_int) / TIMEBASE, num_samples, rate_adjustment_policy);
-
- // Upsample 4x to find interpolated peak.
- peak_resampler.inp_data = samples_out.data();
- peak_resampler.inp_count = samples_out.size() / 2;
-
- vector<float> interpolated_samples_out;
- interpolated_samples_out.resize(samples_out.size());
- {
- unique_lock<mutex> lock(audio_measure_mutex);
-
- while (peak_resampler.inp_count > 0) { // About four iterations.
- peak_resampler.out_data = &interpolated_samples_out[0];
- peak_resampler.out_count = interpolated_samples_out.size() / 2;
- peak_resampler.process();
- size_t out_stereo_samples = interpolated_samples_out.size() / 2 - peak_resampler.out_count;
- peak = max<float>(peak, find_peak(interpolated_samples_out.data(), out_stereo_samples * 2));
- peak_resampler.out_data = nullptr;
+ vector<float> samples_out = audio_mixer.get_output(
+ double(task.pts_int) / TIMEBASE,
+ task.num_samples,
+ rate_adjustment_policy);
+
+ // Send the samples to the sound card, then add them to the output.
+ if (alsa) {
+ alsa->write(samples_out);
}
+ if (output_card_index != -1) {
+ const int64_t av_delay = lrint(global_flags.audio_queue_length_ms * 0.001 * TIMEBASE); // Corresponds to the delay in ResamplingQueue.
+ cards[output_card_index].output->send_audio(task.pts_int + av_delay, samples_out);
+ }
+ video_encoder->add_audio(task.pts_int, move(samples_out));
}
-
- // Find R128 levels and L/R correlation.
- vector<float> left, right;
- deinterleave_samples(samples_out, &left, &right);
- float *ptrs[] = { left.data(), right.data() };
- {
- unique_lock<mutex> lock(audio_measure_mutex);
- r128.process(left.size(), ptrs);
- audio_mixer.set_current_loudness(r128.loudness_M());
- correlation.process_samples(samples_out);
- }
-
- // Send the samples to the sound card.
- if (alsa) {
- alsa->write(samples_out);
- }
-
- // And finally add them to the output.
- video_encoder->add_audio(frame_pts_int, move(samples_out));
-}
-
-void Mixer::subsample_chroma(GLuint src_tex, GLuint dst_tex)
-{
- GLuint vao;
- glGenVertexArrays(1, &vao);
- check_error();
-
- glBindVertexArray(vao);
- check_error();
-
- // Extract Cb/Cr.
- GLuint fbo = resource_pool->create_fbo(dst_tex);
- glBindFramebuffer(GL_FRAMEBUFFER, fbo);
- glViewport(0, 0, WIDTH/2, HEIGHT/2);
- check_error();
-
- glUseProgram(cbcr_program_num);
- check_error();
-
- glActiveTexture(GL_TEXTURE0);
- check_error();
- glBindTexture(GL_TEXTURE_2D, src_tex);
- check_error();
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- check_error();
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
- check_error();
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
- check_error();
-
- float chroma_offset_0[] = { -0.5f / WIDTH, 0.0f };
- set_uniform_vec2(cbcr_program_num, "foo", "chroma_offset_0", chroma_offset_0);
-
- glBindBuffer(GL_ARRAY_BUFFER, cbcr_vbo);
- check_error();
-
- for (GLint attr_index : { cbcr_position_attribute_index, cbcr_texcoord_attribute_index }) {
- glEnableVertexAttribArray(attr_index);
- check_error();
- glVertexAttribPointer(attr_index, 2, GL_FLOAT, GL_FALSE, 0, BUFFER_OFFSET(0));
- check_error();
- }
-
- glDrawArrays(GL_TRIANGLES, 0, 3);
- check_error();
-
- for (GLint attr_index : { cbcr_position_attribute_index, cbcr_texcoord_attribute_index }) {
- glDisableVertexAttribArray(attr_index);
- check_error();
- }
-
- glUseProgram(0);
- check_error();
- glBindFramebuffer(GL_FRAMEBUFFER, 0);
- check_error();
-
- resource_pool->release_fbo(fbo);
- glDeleteVertexArrays(1, &vao);
}
void Mixer::release_display_frame(DisplayFrame *frame)
theme->channel_clicked(preview_num);
}
-void Mixer::reset_meters()
-{
- unique_lock<mutex> lock(audio_measure_mutex);
- peak_resampler.reset();
- peak = 0.0f;
- r128.reset();
- r128.integr_start();
- correlation.reset();
-}
-
void Mixer::start_mode_scanning(unsigned card_index)
{
assert(card_index < num_cards);
projects / nageru / blobdiff