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decklink: Add ability to ingest/embed cea 708 captions 

(This commit also modifies libobs, UI)
master
Colin Edwards 2019-08-26 17:58:20 -05:00 committed by Jim
parent b9a1516254
commit 923f06bfa6
26 changed files with 964 additions and 24 deletions
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1
UI/frontend-plugins/CMakeLists.txt
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@ -1,2 +1,3 @@
add_subdirectory(decklink-output-ui)
add_subdirectory(frontend-tools)
add_subdirectory(decklink-captions)

43
UI/frontend-plugins/decklink-captions/CMakeLists.txt Normal file
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@ -0,0 +1,43 @@
project(decklink-captions)
if(APPLE)
find_library(COCOA Cocoa)
include_directories(${COCOA})
endif()
if(UNIX AND NOT APPLE)
find_package(X11 REQUIRED)
link_libraries(${X11_LIBRARIES})
include_directories(${X11_INCLUDE_DIR})
endif()
set(decklink-captions_HEADERS
decklink-captions.h
)
set(decklink-captions_SOURCES
decklink-captions.cpp
)
set(decklink-captions_UI
forms/captions.ui
)
if(APPLE)
set(decklink-captions_PLATFORM_LIBS
${COCOA})
endif()
qt5_wrap_ui(decklink-captions_UI_HEADERS
${decklink-captions_UI})
add_library(decklink-captions MODULE
${decklink-captions_HEADERS}
${decklink-captions_SOURCES}
${decklink-captions_UI_HEADERS}
)
target_link_libraries(decklink-captions
${frontend-tools_PLATFORM_LIBS}
obs-frontend-api
Qt5::Widgets
libobs)
install_obs_plugin_with_data(decklink-captions data)

0
UI/frontend-plugins/decklink-captions/data/.keepme Normal file
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157
UI/frontend-plugins/decklink-captions/decklink-captions.cpp Normal file
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@ -0,0 +1,157 @@
#include <obs-frontend-api.h>
#include <QMainWindow>
#include <QAction>
#include <obs.hpp>
#include "decklink-captions.h"
OBS_DECLARE_MODULE()
OBS_MODULE_USE_DEFAULT_LOCALE("decklink-captons", "en-US")
struct obs_captions {
std::string source_name;
OBSWeakSource source;
void start();
void stop();
obs_captions();
inline ~obs_captions() { stop(); }
};
obs_captions::obs_captions() {}
static obs_captions *captions = nullptr;
DecklinkCaptionsUI::DecklinkCaptionsUI(QWidget *parent)
: QDialog(parent), ui(new Ui_CaptionsDialog)
{
ui->setupUi(this);
setSizeGripEnabled(true);
setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint);
auto cb = [this](obs_source_t *source) {
uint32_t caps = obs_source_get_output_flags(source);
QString name = obs_source_get_name(source);
if (caps & OBS_SOURCE_CEA_708)
ui->source->addItem(name);
OBSWeakSource weak = OBSGetWeakRef(source);
if (weak == captions->source)
ui->source->setCurrentText(name);
return true;
};
using cb_t = decltype(cb);
ui->source->blockSignals(true);
ui->source->addItem(QStringLiteral(""));
ui->source->setCurrentIndex(0);
obs_enum_sources(
[](void *data, obs_source_t *source) {
return (*static_cast<cb_t *>(data))(source);
},
&cb);
ui->source->blockSignals(false);
}
void DecklinkCaptionsUI::on_source_currentIndexChanged(int)
{
captions->stop();
captions->source_name = ui->source->currentText().toUtf8().constData();
captions->source = GetWeakSourceByName(captions->source_name.c_str());
captions->start();
}
static void caption_callback(void *param, obs_source_t *source,
const struct obs_source_cea_708 *captions)
{
obs_output *output = obs_frontend_get_streaming_output();
if (output) {
if (obs_frontend_streaming_active() &&
obs_output_active(output)) {
obs_output_caption(output, captions);
}
obs_output_release(output);
}
}
void obs_captions::start()
{
OBSSource s = OBSGetStrongRef(source);
if (!s) {
//warn("Source invalid");
return;
}
obs_source_add_caption_callback(s, caption_callback, nullptr);
}
void obs_captions::stop()
{
OBSSource s = OBSGetStrongRef(source);
if (s)
obs_source_remove_caption_callback(s, caption_callback,
nullptr);
}
static void save_decklink_caption_data(obs_data_t *save_data, bool saving,
void *)
{
if (saving) {
obs_data_t *obj = obs_data_create();
obs_data_set_string(obj, "source",
captions->source_name.c_str());
obs_data_set_obj(save_data, "decklink_captions", obj);
obs_data_release(obj);
} else {
captions->stop();
obs_data_t *obj =
obs_data_get_obj(save_data, "decklink_captions");
if (!obj)
obj = obs_data_create();
captions->source_name = obs_data_get_string(obj, "source");
captions->source =
GetWeakSourceByName(captions->source_name.c_str());
obs_data_release(obj);
captions->start();
}
}
void addOutputUI(void)
{
QAction *action = (QAction *)obs_frontend_add_tools_menu_qaction(
obs_module_text("Decklink Captions"));
captions = new obs_captions;
auto cb = []() {
obs_frontend_push_ui_translation(obs_module_get_string);
QWidget *window = (QWidget *)obs_frontend_get_main_window();
DecklinkCaptionsUI dialog(window);
dialog.exec();
obs_frontend_pop_ui_translation();
};
obs_frontend_add_save_callback(save_decklink_caption_data, nullptr);
action->connect(action, &QAction::triggered, cb);
}
bool obs_module_load(void)
{
addOutputUI();
return true;
}

30
UI/frontend-plugins/decklink-captions/decklink-captions.h Normal file
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@ -0,0 +1,30 @@
#include <QDialog>
#include <obs-module.h>
#include <util/platform.h>
#include <obs.hpp>
#include <memory>
#include "ui_captions.h"
class DecklinkCaptionsUI : public QDialog {
Q_OBJECT
private:
public:
std::unique_ptr<Ui_CaptionsDialog> ui;
DecklinkCaptionsUI(QWidget *parent);
public slots:
void on_source_currentIndexChanged(int idx);
};
static inline OBSWeakSource GetWeakSourceByName(const char *name)
{
OBSWeakSource weak;
obs_source_t *source = obs_get_source_by_name(name);
if (source) {
weak = obs_source_get_weak_source(source);
obs_weak_source_release(weak);
obs_source_release(source);
}
return weak;
}

115
UI/frontend-plugins/decklink-captions/forms/captions.ui Normal file
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@ -0,0 +1,115 @@
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>CaptionsDialog</class>
<widget class="QDialog" name="CaptionsDialog">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>519</width>
<height>104</height>
</rect>
</property>
<property name="windowTitle">
<string>Captions</string>
</property>
<layout class="QVBoxLayout" name="verticalLayout">
<item>
<layout class="QFormLayout" name="formLayout">
<property name="labelAlignment">
<set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
</property>
<item row="0" column="0">
<widget class="QLabel" name="label">
<property name="text">
<string>Captions.Source</string>
</property>
<property name="buddy">
<cstring>source</cstring>
</property>
</widget>
</item>
<item row="0" column="1">
<widget class="QComboBox" name="source">
<property name="insertPolicy">
<enum>QComboBox::InsertAlphabetically</enum>
</property>
<property name="sizeAdjustPolicy">
<enum>QComboBox::AdjustToContents</enum>
</property>
</widget>
</item>
</layout>
</item>
<item>
<spacer name="verticalSpacer">
<property name="orientation">
<enum>Qt::Vertical</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>0</width>
<height>0</height>
</size>
</property>
</spacer>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout">
<item>
<spacer name="horizontalSpacer">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
<item>
<widget class="QPushButton" name="accept">
<property name="text">
<string>OK</string>
</property>
</widget>
</item>
<item>
<spacer name="horizontalSpacer_2">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
</layout>
</item>
</layout>
</widget>
<resources/>
<connections>
<connection>
<sender>accept</sender>
<signal>clicked()</signal>
<receiver>CaptionsDialog</receiver>
<slot>accept()</slot>
<hints>
<hint type="sourcelabel">
<x>268</x>
<y>331</y>
</hint>
<hint type="destinationlabel">
<x>229</x>
<y>-11</y>
</hint>
</hints>
</connection>
</connections>
</ui>

6
libobs/CMakeLists.txt
View File

@ -365,7 +365,8 @@ set(libobs_util_SOURCES
util/crc32.c
util/text-lookup.c
util/cf-parser.c
util/profiler.c)
util/profiler.c
util/bitstream.c)
set(libobs_util_HEADERS
util/curl/curl-helper.h
util/sse-intrin.h
@ -392,7 +393,8 @@ set(libobs_util_HEADERS
util/lexer.h
util/platform.h
util/profiler.h
util/profiler.hpp)
util/profiler.hpp
util/bitstream.h)
set(libobs_libobs_SOURCES
${libobs_PLATFORM_SOURCES}

12
libobs/obs-internal.h
View File

@ -36,6 +36,8 @@
#include "obs.h"
#include <caption/caption.h>
#define NUM_TEXTURES 2
#define NUM_CHANNELS 3
#define MICROSECOND_DEN 1000000
@ -587,6 +589,11 @@ struct audio_cb_info {
void *param;
};
struct caption_cb_info {
obs_source_caption_t callback;
void *param;
};
struct obs_source {
struct obs_context_data context;
struct obs_source_info info;
@ -690,6 +697,9 @@ struct obs_source {
uint32_t async_convert_width[MAX_AV_PLANES];
uint32_t async_convert_height[MAX_AV_PLANES];
pthread_mutex_t caption_cb_mutex;
DARRAY(struct caption_cb_info) caption_cb_list;
/* async video deinterlacing */
uint64_t deinterlace_offset;
uint64_t deinterlace_frame_ts;
@ -977,6 +987,8 @@ struct obs_output {
struct caption_text *caption_head;
struct caption_text *caption_tail;
struct circlebuf caption_data;
bool valid;
uint64_t active_delay_ns;

88
libobs/obs-output.c
View File

@ -227,6 +227,7 @@ void obs_output_destroy(obs_output_t *output)
os_event_destroy(output->reconnect_stop_event);
obs_context_data_free(&output->context);
circlebuf_free(&output->delay_data);
circlebuf_free(&output->caption_data);
if (output->owns_info_id)
bfree((void *)output->info.id);
if (output->last_error_message)
@ -267,6 +268,10 @@ bool obs_output_actual_start(obs_output_t *output)
os_atomic_dec_long(&output->delay_restart_refs);
output->caption_timestamp = 0;
circlebuf_free(&output->caption_data);
circlebuf_init(&output->caption_data);
return success;
}
@ -1207,7 +1212,6 @@ static const uint8_t nal_start[4] = {0, 0, 0, 1};
static bool add_caption(struct obs_output *output, struct encoder_packet *out)
{
struct encoder_packet backup = *out;
caption_frame_t cf;
sei_t sei;
uint8_t *data;
size_t size;
@ -1224,10 +1228,62 @@ static bool add_caption(struct obs_output *output, struct encoder_packet *out)
da_push_back_array(out_data, &ref, sizeof(ref));
da_push_back_array(out_data, out->data, out->size);
caption_frame_init(&cf);
caption_frame_from_text(&cf, &output->caption_head->text[0]);
if (output->caption_data.size > 0) {
sei_from_caption_frame(&sei, &cf);
cea708_t cea708;
cea708_init(&cea708, 0); // set up a new popon frame
void *caption_buf = bzalloc(3 * sizeof(uint8_t));
while (output->caption_data.size > 0) {
circlebuf_pop_front(&output->caption_data, caption_buf,
3 * sizeof(uint8_t));
if ((((uint8_t *)caption_buf)[0] & 0x3) != 0) {
// only send cea 608
continue;
}
uint16_t captionData = ((uint8_t *)caption_buf)[1];
captionData = captionData << 8;
captionData += ((uint8_t *)caption_buf)[2];
// padding
if (captionData == 0x8080) {
continue;
}
if (captionData == 0) {
continue;
}
if (!eia608_parity_varify(captionData)) {
continue;
}
cea708_add_cc_data(&cea708, 1,
((uint8_t *)caption_buf)[0] & 0x3,
captionData);
}
bfree(caption_buf);
sei_message_t *msg =
sei_message_new(sei_type_user_data_registered_itu_t_t35,
0, CEA608_MAX_SIZE);
msg->size = cea708_render(&cea708, sei_message_data(msg),
sei_message_size(msg));
sei_message_append(&sei, msg);
} else if (output->caption_head) {
caption_frame_t cf;
caption_frame_init(&cf);
caption_frame_from_text(&cf, &output->caption_head->text[0]);
sei_from_caption_frame(&sei, &cf);
struct obs_caption_frame *next = output->caption_head->next;
bfree(output->caption_head);
output->caption_head = next;
}
data = malloc(sei_render_size(&sei));
size = sei_render(&sei, data);
@ -1244,13 +1300,12 @@ static bool add_caption(struct obs_output *output, struct encoder_packet *out)
sei_free(&sei);
struct caption_text *next = output->caption_head->next;
bfree(output->caption_head);
output->caption_head = next;
return true;
}
#endif
double last_caption_timestamp = 0;
static inline void send_interleaved(struct obs_output *output)
{
struct encoder_packet out = output->interleaved_packets.array[0];
@ -1286,6 +1341,13 @@ static inline void send_interleaved(struct obs_output *output)
}
}
if (output->caption_data.size > 0) {
if (last_caption_timestamp < frame_timestamp) {
last_caption_timestamp = frame_timestamp;
add_caption(output, &out);
}
}
pthread_mutex_unlock(&output->caption_mutex);
#endif
}
@ -2471,6 +2533,18 @@ const char *obs_output_get_id(const obs_output_t *output)
: NULL;
}
void obs_output_caption(obs_output_t *output,
const struct obs_source_cea_708 *captions)
{
pthread_mutex_lock(&output->caption_mutex);
for (int i = 0; i < captions->packets; i++) {
circlebuf_push_back(&output->caption_data,
captions->data + (i * 3),
3 * sizeof(uint8_t));
}
pthread_mutex_unlock(&output->caption_mutex);
}
#if BUILD_CAPTIONS
static struct caption_text *caption_text_new(const char *text, size_t bytes,
struct caption_text *tail,

50
libobs/obs-source.c
View File

@ -184,6 +184,7 @@ static bool obs_source_init(struct obs_source *source)
pthread_mutex_init_value(&source->audio_mutex);
pthread_mutex_init_value(&source->audio_buf_mutex);
pthread_mutex_init_value(&source->audio_cb_mutex);
pthread_mutex_init_value(&source->caption_cb_mutex);
if (pthread_mutexattr_init(&attr) != 0)
return false;
@ -201,6 +202,8 @@ static bool obs_source_init(struct obs_source *source)
return false;
if (pthread_mutex_init(&source->async_mutex, NULL) != 0)
return false;
if (pthread_mutex_init(&source->caption_cb_mutex, NULL) != 0)
return false;
if (is_audio_source(source) || is_composite_source(source))
allocate_audio_output_buffer(source);
@ -683,6 +686,7 @@ void obs_source_destroy(struct obs_source *source)
da_free(source->audio_actions);
da_free(source->audio_cb_list);
da_free(source->caption_cb_list);
da_free(source->async_cache);
da_free(source->async_frames);
da_free(source->filters);
@ -691,6 +695,7 @@ void obs_source_destroy(struct obs_source *source)
pthread_mutex_destroy(&source->audio_buf_mutex);
pthread_mutex_destroy(&source->audio_cb_mutex);
pthread_mutex_destroy(&source->audio_mutex);
pthread_mutex_destroy(&source->caption_cb_mutex);
pthread_mutex_destroy(&source->async_mutex);
obs_data_release(source->private_settings);
obs_context_data_free(&source->context);
@ -2898,6 +2903,51 @@ void obs_source_set_async_rotation(obs_source_t *source, long rotation)
source->async_rotation = rotation;
}
void obs_source_output_cea708(obs_source_t *source,
const struct obs_source_cea_708 *captions)
{
if (!captions) {
return;
}
pthread_mutex_lock(&source->caption_cb_mutex);
for (size_t i = source->caption_cb_list.num; i > 0; i--) {
struct caption_cb_info info =
source->caption_cb_list.array[i - 1];
info.callback(info.param, source, captions);
}
pthread_mutex_unlock(&source->caption_cb_mutex);
}
void obs_source_add_caption_callback(obs_source_t *source,
obs_source_caption_t callback, void *param)
{
struct caption_cb_info info = {callback, param};
if (!obs_source_valid(source, "obs_source_add_caption_callback"))
return;
pthread_mutex_lock(&source->caption_cb_mutex);
da_push_back(source->caption_cb_list, &info);
pthread_mutex_unlock(&source->caption_cb_mutex);
}
void obs_source_remove_caption_callback(obs_source_t *source,
obs_source_caption_t callback,
void *param)
{
struct caption_cb_info info = {callback, param};
if (!obs_source_valid(source, "obs_source_remove_caption_callback"))
return;
pthread_mutex_lock(&source->caption_cb_mutex);
da_erase_item(source->caption_cb_list, &info);
pthread_mutex_unlock(&source->caption_cb_mutex);
}
static inline bool preload_frame_changed(obs_source_t *source,
const struct obs_source_frame *in)
{

5
libobs/obs-source.h
View File

@ -186,6 +186,11 @@ enum obs_media_state {
*/
#define OBS_SOURCE_CONTROLLABLE_MEDIA (1 << 13)
/**
* Source type provides cea708 data
*/
#define OBS_SOURCE_CEA_708 (1 << 14)
/** @} */
typedef void (*obs_source_enum_proc_t)(obs_source_t *parent,

23
libobs/obs.h
View File

@ -212,6 +212,12 @@ struct obs_source_audio {
uint64_t timestamp;
};
struct obs_source_cea_708 {
const uint8_t *data;
uint32_t packets;
uint64_t timestamp;
};
/**
* Source asynchronous video output structure. Used with
* obs_source_output_video to output asynchronous video. Video is buffered as
@ -1117,6 +1123,16 @@ EXPORT void obs_source_add_audio_capture_callback(
EXPORT void obs_source_remove_audio_capture_callback(
obs_source_t *source, obs_source_audio_capture_t callback, void *param);
typedef void (*obs_source_caption_t)(void *param, obs_source_t *source,
const struct obs_source_cea_708 *captions);
EXPORT void obs_source_add_caption_callback(obs_source_t *source,
obs_source_caption_t callback,
void *param);
EXPORT void obs_source_remove_caption_callback(obs_source_t *source,
obs_source_caption_t callback,
void *param);
enum obs_deinterlace_mode {
OBS_DEINTERLACE_MODE_DISABLE,
OBS_DEINTERLACE_MODE_DISCARD,
@ -1208,6 +1224,9 @@ EXPORT void obs_source_output_video2(obs_source_t *source,
EXPORT void obs_source_set_async_rotation(obs_source_t *source, long rotation);
EXPORT void obs_source_output_cea708(obs_source_t *source,
const struct obs_source_cea_708 *captions);
/**
* Preloads asynchronous video data to allow instantaneous playback
*
@ -1884,12 +1903,16 @@ EXPORT uint32_t obs_output_get_height(const obs_output_t *output);
EXPORT const char *obs_output_get_id(const obs_output_t *output);
EXPORT void obs_output_caption(obs_output_t *output,
const struct obs_source_cea_708 *captions);
#if BUILD_CAPTIONS
EXPORT void obs_output_output_caption_text1(obs_output_t *output,
const char *text);
EXPORT void obs_output_output_caption_text2(obs_output_t *output,
const char *text,
double display_duration);
#endif
EXPORT float obs_output_get_congestion(obs_output_t *output);

52
libobs/util/bitstream.c Normal file
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@ -0,0 +1,52 @@
#include "bitstream.h"
#include <stdlib.h>
#include <string.h>
void bitstream_reader_init(struct bitstream_reader *r, uint8_t *data,
size_t len)
{
memset(r, 0, sizeof(struct bitstream_reader));
r->buf = data;
r->subPos = 0x80;
r->len = len;
}
uint8_t bitstream_reader_read_bit(struct bitstream_reader *r)
{
if (r->pos >= r->len)
return 0;
uint8_t bit = (*(r->buf + r->pos) & r->subPos) == r->subPos ? 1 : 0;
r->subPos >>= 0x1;
if (r->subPos == 0) {
r->subPos = 0x80;
r->pos++;
}
return bit;
}
uint8_t bitstream_reader_read_bits(struct bitstream_reader *r, int bits)
{
uint8_t res = 0;
for (int i = 1; i <= bits; i++) {
res <<= 1;
res |= bitstream_reader_read_bit(r);
}
return res;
}
uint8_t bitstream_reader_r8(struct bitstream_reader *r)
{
return bitstream_reader_read_bits(r, 8);
}
uint16_t bitstream_reader_r16(struct bitstream_reader *r)
{
uint8_t b = bitstream_reader_read_bits(r, 8);
return ((uint16_t)b << 8) | bitstream_reader_read_bits(r, 8);
}

29
libobs/util/bitstream.h Normal file
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@ -0,0 +1,29 @@
#pragma once
#include "c99defs.h"
/*
* General programmable serialization functions. (A shared interface to
* various reading/writing to/from different inputs/outputs)
*/
#ifdef __cplusplus
extern "C" {
#endif
struct bitstream_reader {
uint8_t pos;
uint8_t subPos;
uint8_t *buf;
size_t len;
};
EXPORT void bitstream_reader_init(struct bitstream_reader *r, uint8_t *data,
size_t len);
EXPORT uint8_t bitstream_reader_read_bits(struct bitstream_reader *r, int bits);
EXPORT uint8_t bitstream_reader_r8(struct bitstream_reader *r);
EXPORT uint16_t bitstream_reader_r16(struct bitstream_reader *r);
#ifdef __cplusplus
}
#endif

72
plugins/decklink/OBSVideoFrame.cpp Normal file
View File

@ -0,0 +1,72 @@
#include "OBSVideoFrame.h"
OBSVideoFrame::OBSVideoFrame(long width, long height)
{
this->width = width;
this->height = height;
this->rowBytes = width * 2;
this->data = new unsigned char[width * height * 2 + 1];
}
HRESULT OBSVideoFrame::SetFlags(BMDFrameFlags newFlags)
{
flags = newFlags;
return S_OK;
}
HRESULT OBSVideoFrame::SetTimecode(BMDTimecodeFormat format,
IDeckLinkTimecode *timecode)
{
return 0;
}
HRESULT
OBSVideoFrame::SetTimecodeFromComponents(BMDTimecodeFormat format,
uint8_t hours, uint8_t minutes,
uint8_t seconds, uint8_t frames,
BMDTimecodeFlags flags)
{
return 0;
}
HRESULT OBSVideoFrame::SetAncillaryData(IDeckLinkVideoFrameAncillary *ancillary)
{
return 0;
}
HRESULT OBSVideoFrame::SetTimecodeUserBits(BMDTimecodeFormat format,
BMDTimecodeUserBits userBits)
{
return 0;
}
long OBSVideoFrame::GetWidth()
{
return width;
}
long OBSVideoFrame::GetHeight()
{
return height;
}
long OBSVideoFrame::GetRowBytes()
{
return rowBytes;
}
BMDPixelFormat OBSVideoFrame::GetPixelFormat()
{
return pixelFormat;
}
BMDFrameFlags OBSVideoFrame::GetFlags()
{
return flags;
}
HRESULT OBSVideoFrame::GetBytes(void **buffer)
{
*buffer = this->data;
return S_OK;
}

70
plugins/decklink/OBSVideoFrame.h Normal file
View File

@ -0,0 +1,70 @@
#pragma once
#include "platform.hpp"
class OBSVideoFrame : public IDeckLinkMutableVideoFrame {
private:
BMDFrameFlags flags;
BMDPixelFormat pixelFormat = bmdFormat8BitYUV;
long width;
long height;
long rowBytes;
unsigned char *data;
public:
OBSVideoFrame(long width, long height);
HRESULT STDMETHODCALLTYPE SetFlags(BMDFrameFlags newFlags) override;
HRESULT STDMETHODCALLTYPE SetTimecode(
BMDTimecodeFormat format, IDeckLinkTimecode *timecode) override;
HRESULT STDMETHODCALLTYPE SetTimecodeFromComponents(
BMDTimecodeFormat format, uint8_t hours, uint8_t minutes,
uint8_t seconds, uint8_t frames,
BMDTimecodeFlags flags) override;
HRESULT
STDMETHODCALLTYPE
SetAncillaryData(IDeckLinkVideoFrameAncillary *ancillary) override;
HRESULT STDMETHODCALLTYPE
SetTimecodeUserBits(BMDTimecodeFormat format,
BMDTimecodeUserBits userBits) override;
long STDMETHODCALLTYPE GetWidth() override;
long STDMETHODCALLTYPE GetHeight() override;
long STDMETHODCALLTYPE GetRowBytes() override;
BMDPixelFormat STDMETHODCALLTYPE GetPixelFormat() override;
BMDFrameFlags STDMETHODCALLTYPE GetFlags() override;
HRESULT STDMETHODCALLTYPE GetBytes(void **buffer) override;
//Dummy implementations of remaining virtual methods
virtual HRESULT STDMETHODCALLTYPE
GetTimecode(/* in */ BMDTimecodeFormat format,
/* out */ IDeckLinkTimecode **timecode)
{
return E_NOINTERFACE;
};
virtual HRESULT STDMETHODCALLTYPE
GetAncillaryData(/* out */ IDeckLinkVideoFrameAncillary **ancillary)
{
return E_NOINTERFACE;
};
// IUnknown interface (dummy implementation)
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid,
LPVOID *ppv)
{
return E_NOINTERFACE;
}
virtual ULONG STDMETHODCALLTYPE AddRef() { return 1; }
virtual ULONG STDMETHODCALLTYPE Release() { return 1; }
};

147
plugins/decklink/decklink-device-instance.cpp
View File

@ -9,8 +9,14 @@
#include <util/util_uint64.h>
#include <sstream>
#include <iomanip>
#include <algorithm>
#include "OBSVideoFrame.h"
#include <caption/caption.h>
#include <util/bitstream.h>
static inline enum video_format ConvertPixelFormat(BMDPixelFormat format)
{
switch (format) {
@ -62,14 +68,23 @@ static inline audio_repack_mode_t ConvertRepackFormat(speaker_layout format,
DeckLinkDeviceInstance::DeckLinkDeviceInstance(DecklinkBase *decklink_,
DeckLinkDevice *device_)
: currentFrame(), currentPacket(), decklink(decklink_), device(device_)
: currentFrame(),
currentPacket(),
currentCaptions(),
decklink(decklink_),
device(device_)
{
currentPacket.samples_per_sec = 48000;
currentPacket.speakers = SPEAKERS_STEREO;
currentPacket.format = AUDIO_FORMAT_16BIT;
}
DeckLinkDeviceInstance::~DeckLinkDeviceInstance() {}
DeckLinkDeviceInstance::~DeckLinkDeviceInstance()
{
if (convertFrame) {
delete convertFrame;
}
}
void DeckLinkDeviceInstance::HandleAudioPacket(
IDeckLinkAudioInputPacket *audioPacket, const uint64_t timestamp)
@ -127,16 +142,47 @@ void DeckLinkDeviceInstance::HandleVideoFrame(
if (videoFrame == nullptr)
return;
IDeckLinkVideoFrameAncillaryPackets *packets;
if (videoFrame->QueryInterface(IID_IDeckLinkVideoFrameAncillaryPackets,
(void **)&packets) == S_OK) {
IDeckLinkAncillaryPacketIterator *iterator;
packets->GetPacketIterator(&iterator);
IDeckLinkAncillaryPacket *packet;
iterator->Next(&packet);
if (packet) {
auto did = packet->GetDID();
auto sdid = packet->GetSDID();
// Caption data
if (did == 0x61 & sdid == 0x01) {
this->HandleCaptionPacket(packet, timestamp);
}
packet->Release();
}
iterator->Release();
packets->Release();
}
IDeckLinkVideoConversion *frameConverter =
CreateVideoConversionInstance();
frameConverter->ConvertFrame(videoFrame, convertFrame);
void *bytes;
if (videoFrame->GetBytes(&bytes) != S_OK) {
if (convertFrame->GetBytes(&bytes) != S_OK) {
LOG(LOG_WARNING, "Failed to get video frame data");
return;
}
currentFrame.data[0] = (uint8_t *)bytes;
currentFrame.linesize[0] = (uint32_t)videoFrame->GetRowBytes();
currentFrame.width = (uint32_t)videoFrame->GetWidth();
currentFrame.height = (uint32_t)videoFrame->GetHeight();
currentFrame.linesize[0] = (uint32_t)convertFrame->GetRowBytes();
currentFrame.width = (uint32_t)convertFrame->GetWidth();
currentFrame.height = (uint32_t)convertFrame->GetHeight();
currentFrame.timestamp = timestamp;
obs_source_output_video2(
@ -144,6 +190,86 @@ void DeckLinkDeviceInstance::HandleVideoFrame(
&currentFrame);
}
void DeckLinkDeviceInstance::HandleCaptionPacket(
IDeckLinkAncillaryPacket *packet, const uint64_t timestamp)
{
auto line = packet->GetLineNumber();
const void *data;
uint32_t size;
packet->GetBytes(bmdAncillaryPacketFormatUInt8, &data, &size);
auto anc = (uint8_t *)data;
struct bitstream_reader reader;
bitstream_reader_init(&reader, anc, size);
auto header1 = bitstream_reader_r8(&reader);
auto header2 = bitstream_reader_r8(&reader);
uint8_t length = bitstream_reader_r8(&reader);
uint8_t frameRate = bitstream_reader_read_bits(&reader, 4);
//reserved
bitstream_reader_read_bits(&reader, 4);
auto cdp_timecode_added = bitstream_reader_read_bits(&reader, 1);
auto cdp_data_block_added = bitstream_reader_read_bits(&reader, 1);
auto cdp_service_info_added = bitstream_reader_read_bits(&reader, 1);
auto cdp_service_info_start = bitstream_reader_read_bits(&reader, 1);
auto cdp_service_info_changed = bitstream_reader_read_bits(&reader, 1);
auto cdp_service_info_end = bitstream_reader_read_bits(&reader, 1);
auto cdp_contains_captions = bitstream_reader_read_bits(&reader, 1);
//reserved
bitstream_reader_read_bits(&reader, 1);
auto cdp_counter = bitstream_reader_r8(&reader);
auto cdp_counter2 = bitstream_reader_r8(&reader);
if (cdp_timecode_added) {
auto timecodeSectionID = bitstream_reader_r8(&reader);
//reserved
bitstream_reader_read_bits(&reader, 2);
bitstream_reader_read_bits(&reader, 2);
bitstream_reader_read_bits(&reader, 4);
// reserved
bitstream_reader_read_bits(&reader, 1);
bitstream_reader_read_bits(&reader, 3);
bitstream_reader_read_bits(&reader, 4);
bitstream_reader_read_bits(&reader, 1);
bitstream_reader_read_bits(&reader, 3);
bitstream_reader_read_bits(&reader, 4);
bitstream_reader_read_bits(&reader, 1);
bitstream_reader_read_bits(&reader, 1);
bitstream_reader_read_bits(&reader, 3);
bitstream_reader_read_bits(&reader, 4);
}
if (cdp_contains_captions) {
auto cdp_data_section = bitstream_reader_r8(&reader);
auto process_em_data_flag =
bitstream_reader_read_bits(&reader, 1);
auto process_cc_data_flag =
bitstream_reader_read_bits(&reader, 1);
auto additional_data_flag =
bitstream_reader_read_bits(&reader, 1);
auto cc_count = bitstream_reader_read_bits(&reader, 5);
auto *outData =
(uint8_t *)bzalloc(sizeof(uint8_t) * cc_count * 3);
memcpy(outData, anc + reader.pos, cc_count * 3);
currentCaptions.data = outData;
currentCaptions.timestamp = timestamp;
currentCaptions.packets = cc_count;
obs_source_output_cea708(
static_cast<DeckLinkInput *>(decklink)->GetSource(),
&currentCaptions);
bfree(outData);
}
}
void DeckLinkDeviceInstance::FinalizeStream()
{
input->SetCallback(nullptr);
@ -189,6 +315,11 @@ void DeckLinkDeviceInstance::SetupVideoFormat(DeckLinkDeviceMode *mode_)
currentFrame.color_range_min,
currentFrame.color_range_max);
if (convertFrame) {
delete convertFrame;
}
convertFrame = new OBSVideoFrame(mode_->GetWidth(), mode_->GetHeight());
#ifdef LOG_SETUP_VIDEO_FORMAT
LOG(LOG_INFO, "Setup video format: %s, %s, %s",
pixelFormat == bmdFormat8BitYUV ? "YUV" : "RGB",
@ -250,7 +381,7 @@ bool DeckLinkDeviceInstance::StartCapture(DeckLinkDeviceMode *mode_,
bool isauto = mode_->GetName() == "Auto";
if (isauto) {
displayMode = bmdModeNTSC;
pixelFormat = bmdFormat8BitYUV;
pixelFormat = bmdFormat10BitYUV;
flags = bmdVideoInputEnableFormatDetection;
} else {
displayMode = mode_->GetDisplayMode();
@ -503,7 +634,7 @@ HRESULT STDMETHODCALLTYPE DeckLinkDeviceInstance::VideoInputFormatChanged(
default:
case bmdDetectedVideoInputYCbCr422:
pixelFormat = bmdFormat8BitYUV;
pixelFormat = bmdFormat10BitYUV;
break;
}
}

5
plugins/decklink/decklink-device-instance.hpp
View File

@ -6,6 +6,7 @@
#include <obs-module.h>
#include "decklink-device.hpp"
#include "../../libobs/media-io/video-scaler.h"
#include "OBSVideoFrame.h"
class AudioRepacker;
class DecklinkBase;
@ -14,6 +15,7 @@ class DeckLinkDeviceInstance : public IDeckLinkInputCallback {
protected:
struct obs_source_frame2 currentFrame;
struct obs_source_audio currentPacket;
struct obs_source_cea_708 currentCaptions;
DecklinkBase *decklink = nullptr;
DeckLinkDevice *device = nullptr;
DeckLinkDeviceMode *mode = nullptr;
@ -34,6 +36,7 @@ protected:
speaker_layout channelFormat = SPEAKERS_STEREO;
bool swap;
OBSVideoFrame *convertFrame = nullptr;
IDeckLinkMutableVideoFrame *decklinkOutputFrame = nullptr;
void FinalizeStream();
@ -104,4 +107,6 @@ public:
void DisplayVideoFrame(video_data *frame);
void WriteAudio(audio_data *frames);
void HandleCaptionPacket(IDeckLinkAncillaryPacket *packet,
const uint64_t timestamp);
};

6
plugins/decklink/decklink-source.cpp
View File

@ -331,9 +331,9 @@ struct obs_source_info create_decklink_source_info()
struct obs_source_info decklink_source_info = {};
decklink_source_info.id = "decklink-input";
decklink_source_info.type = OBS_SOURCE_TYPE_INPUT;
decklink_source_info.output_flags = OBS_SOURCE_ASYNC_VIDEO |
OBS_SOURCE_AUDIO |
OBS_SOURCE_DO_NOT_DUPLICATE;
decklink_source_info.output_flags =
OBS_SOURCE_ASYNC_VIDEO | OBS_SOURCE_AUDIO |
OBS_SOURCE_DO_NOT_DUPLICATE | OBS_SOURCE_CEA_708;
decklink_source_info.create = decklink_create;
decklink_source_info.destroy = decklink_destroy;
decklink_source_info.get_defaults = decklink_get_defaults;

6
plugins/decklink/linux/CMakeLists.txt
View File

@ -5,6 +5,8 @@ if(DISABLE_DECKLINK)
return()
endif()
include_directories(${CMAKE_SOURCE_DIR}/deps/libcaption)
set(linux-decklink-sdk_HEADERS
decklink-sdk/DeckLinkAPI.h
decklink-sdk/DeckLinkAPIConfiguration.h
@ -34,6 +36,7 @@ set(linux-decklink_HEADERS
../audio-repack.h
../audio-repack.hpp
../util.hpp
../OBSVideoFrame.h
)
set(linux-decklink_SOURCES
@ -51,6 +54,7 @@ set(linux-decklink_SOURCES
../audio-repack.c
platform.cpp
../util.cpp
../OBSVideoFrame.h
)
add_library(linux-decklink MODULE
@ -62,7 +66,7 @@ add_library(linux-decklink MODULE
target_link_libraries(linux-decklink
libobs
)
caption)
set_target_properties(linux-decklink PROPERTIES FOLDER "plugins")
install_obs_plugin_with_data(linux-decklink ../data)

8
plugins/decklink/mac/CMakeLists.txt
View File

@ -9,6 +9,8 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_CURRENT_SOURCE_DIR}")
find_library(COREFOUNDATION CoreFoundation)
include_directories(${CMAKE_SOURCE_DIR}/deps/libcaption)
set(mac-decklink-sdk_HEADERS
decklink-sdk/DeckLinkAPI.h
decklink-sdk/DeckLinkAPIConfiguration.h
@ -37,6 +39,7 @@ set(mac-decklink_HEADERS
../audio-repack.h
../audio-repack.hpp
../util.hpp
../OBSVideoFrame.h
)
set(mac-decklink_SOURCES
@ -54,6 +57,7 @@ set(mac-decklink_SOURCES
../audio-repack.c
platform.cpp
../util.cpp
../OBSVideoFrame.cpp
)
list(APPEND decklink_HEADERS ${decklink_UI_HEADERS})
@ -73,7 +77,9 @@ add_library(mac-decklink MODULE
target_link_libraries(mac-decklink
libobs
${COREFOUNDATION})
obs-frontend-api
${COREFOUNDATION}
caption)
set_target_properties(mac-decklink PROPERTIES FOLDER "plugins")
install_obs_plugin_with_data(mac-decklink ../data)

1
plugins/decklink/platform.hpp
View File

@ -7,6 +7,7 @@ typedef BOOL decklink_bool_t;
typedef BSTR decklink_string_t;
IDeckLinkDiscovery *CreateDeckLinkDiscoveryInstance(void);
IDeckLinkIterator *CreateDeckLinkIteratorInstance(void);
IDeckLinkVideoConversion *CreateVideoConversionInstance(void);
#define IUnknownUUID IID_IUnknown
typedef REFIID CFUUIDBytes;
#define CFUUIDGetUUIDBytes(x) x

11
plugins/decklink/win/CMakeLists.txt
View File

@ -7,6 +7,8 @@ endif()
include(IDLFileHelper)
include_directories(${CMAKE_SOURCE_DIR}/deps/libcaption)
set(win-decklink-sdk_IDLS
decklink-sdk/DeckLinkAPI.idl
)
@ -29,6 +31,7 @@ set(win-decklink_HEADERS
../audio-repack.h
../audio-repack.hpp
../util.hpp
../OBSVideoFrame.h
)
set(MODULE_DESCRIPTION "OBS DeckLink Windows module")
@ -48,7 +51,8 @@ set(win-decklink_SOURCES
../audio-repack.c
platform.cpp
../util.cpp
win-decklink.rc)
win-decklink.rc
../OBSVideoFrame.cpp)
add_idl_files(win-decklink-sdk_GENERATED_FILES
${win-decklink-sdk_IDLS}
@ -56,6 +60,7 @@ add_idl_files(win-decklink-sdk_GENERATED_FILES
include_directories(
${CMAKE_CURRENT_BINARY_DIR}
"${CMAKE_SOURCE_DIR}/UI/obs-frontend-api"
)
add_library(win-decklink MODULE
@ -66,7 +71,9 @@ add_library(win-decklink MODULE
)
target_link_libraries(win-decklink
libobs)
libobs
obs-frontend-api
caption)
set_target_properties(win-decklink PROPERTIES FOLDER "plugins")
install_obs_plugin_with_data(win-decklink ../data)

10
plugins/decklink/win/platform.cpp
View File

@ -20,6 +20,16 @@ IDeckLinkIterator *CreateDeckLinkIteratorInstance(void)
return result == S_OK ? iterator : nullptr;
}
IDeckLinkVideoConversion *CreateVideoConversionInstance(void)
{
IDeckLinkVideoConversion *conversion;
const HRESULT result = CoCreateInstance(CLSID_CDeckLinkVideoConversion,
nullptr, CLSCTX_ALL,
IID_IDeckLinkVideoConversion,
(void **)&conversion);
return result == S_OK ? conversion : nullptr;
}
bool DeckLinkStringToStdString(decklink_string_t input, std::string &output)
{
if (input == nullptr)

7
test/cmocka/CMakeLists.txt
View File

@ -37,3 +37,10 @@ target_link_libraries(test_darray ${CMOCKA_LIBRARIES} libobs)
add_test(test_darray ${CMAKE_CURRENT_BINARY_DIR}/test_darray)
fixLink(test_darray)
# bitstream test
add_executable(test_bitstream test_bitstream.c)
target_link_libraries(test_bitstream ${CMOCKA_LIBRARIES} libobs)
add_test(test_bitstream ${CMAKE_CURRENT_BINARY_DIR}/test_bitstream)
fixLink(test_bitstream)

34
test/cmocka/test_bitstream.c Normal file
View File

@ -0,0 +1,34 @@
#include <stdarg.h>
#include <stddef.h>
#include <setjmp.h>
#include <cmocka.h>
#include <util/bitstream.h>
static void bitstream_test(void **state)
{
struct bitstream_reader reader;
uint8_t data[6] = {0x34, 0xff, 0xe1, 0x23, 0x91, 0x45};
// set len to one less than the array to show that we stop reading at that len
bitstream_reader_init(&reader, data, 5);
assert_int_equal(bitstream_reader_read_bits(&reader, 8), 0x34);
assert_int_equal(bitstream_reader_read_bits(&reader, 1), 1);
assert_int_equal(bitstream_reader_read_bits(&reader, 3), 7);
assert_int_equal(bitstream_reader_read_bits(&reader, 4), 0xF);
assert_int_equal(bitstream_reader_r8(&reader), 0xe1);
assert_int_equal(bitstream_reader_r16(&reader), 0x2391);
// test reached end
assert_int_equal(bitstream_reader_r8(&reader), 0);
}
int main()
{
const struct CMUnitTest tests[] = {
cmocka_unit_test(bitstream_test),
};
return cmocka_run_group_tests(tests, NULL, NULL);
}