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vlc/modules/video_output/decklink.cpp
Rémi Denis-Courmont 4a09b885e8 decklink: cut string length check 
If the string has at least 5 characters, it is too long. We don't
exactly care how many characters it actually has.
2022-09-03 09:12:27 +00:00

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/*****************************************************************************
* decklink.cpp: BlackMagic DeckLink SDI output module
*****************************************************************************
* Copyright (C) 2012-2013 Rafaël Carré
* Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
* Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
*
* Authors: Rafaël Carré <funman@videolan.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*
* TODO: test non stereo audio
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <cinttypes>
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_threads.h>
#include <vlc_vout_display.h>
#include <vlc_block.h>
#include <vlc_aout.h>
#include <vlc_cxx_helpers.hpp>
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#include "../access/vlc_decklink.h"
#include "../stream_out/sdi/V210.hpp"
#include "../stream_out/sdi/Ancillary.hpp"
#include "../stream_out/sdi/DBMHelper.hpp"
#include "../stream_out/sdi/SDIGenerator.hpp"
#ifndef _WIN32
#include <DeckLinkAPIDispatch.cpp>
#endif
#include <DeckLinkAPIVersion.h>
#if BLACKMAGIC_DECKLINK_API_VERSION < 0x0b010000
#define IID_IDeckLinkProfileAttributes IID_IDeckLinkAttributes
#define IDeckLinkProfileAttributes IDeckLinkAttributes
#define bmdVideoConnectionUnspecified 0
#endif
#define FRAME_SIZE 1920
#define CHANNELS_MAX 6
#if 0
static const int pi_channels_maps[CHANNELS_MAX+1] =
{
0,
AOUT_CHAN_CENTER,
AOUT_CHANS_STEREO,
AOUT_CHANS_3_0,
AOUT_CHANS_4_0,
AOUT_CHANS_5_0,
AOUT_CHANS_5_1,
};
#endif
#define NOSIGNAL_INDEX_TEXT N_("Timelength after which we assume there is no signal.")
#define NOSIGNAL_INDEX_LONGTEXT N_(\
"Timelength after which we assume there is no signal.\n"\
"After this delay we black out the video."\
)
#define AFD_INDEX_TEXT N_("Active Format Descriptor value")
#define AR_INDEX_TEXT N_("Aspect Ratio")
#define AR_INDEX_LONGTEXT N_("Aspect Ratio of the source picture.")
#define AFDLINE_INDEX_TEXT N_("Active Format Descriptor line")
#define AFDLINE_INDEX_LONGTEXT N_("VBI line on which to output Active Format Descriptor.")
#define NOSIGNAL_IMAGE_TEXT N_("Picture to display on input signal loss")
#define CARD_INDEX_TEXT N_("Output card")
#define CARD_INDEX_LONGTEXT N_(\
"DeckLink output card, if multiple exist. " \
"The cards are numbered from 0.")
#define MODE_TEXT N_("Desired output mode")
#define MODE_LONGTEXT N_(\
"Desired output mode for DeckLink output. " \
"This value should be a FOURCC code in textual " \
"form, e.g. \"ntsc\".")
#define RATE_TEXT N_("Audio samplerate (Hz)")
#define RATE_LONGTEXT N_(\
"Audio sampling rate (in hertz) for DeckLink output. " \
"0 disables audio output.")
#define CHANNELS_TEXT N_("Number of audio channels")
#define CHANNELS_LONGTEXT N_(\
"Number of output channels for DeckLink output. " \
"Must be 2, 8 or 16. 0 disables audio output.")
#define VIDEO_CONNECTION_TEXT N_("Video connection")
#define VIDEO_CONNECTION_LONGTEXT N_(\
"Video connection for DeckLink output.")
#define VIDEO_TENBITS_TEXT N_("10 bits")
#define VIDEO_TENBITS_LONGTEXT N_(\
"Use 10 bits per pixel for video frames.")
#define CFG_PREFIX "decklink-output-"
#define VIDEO_CFG_PREFIX "decklink-vout-"
#define AUDIO_CFG_PREFIX "decklink-aout-"
/* Video Connections */
static const char *const ppsz_videoconns[] = {
"sdi",
"hdmi",
"opticalsdi",
"component",
"composite",
"svideo"
};
static const char *const ppsz_videoconns_text[] = {
N_("SDI"),
N_("HDMI"),
N_("Optical SDI"),
N_("Component"),
N_("Composite"),
N_("S-video"),
};
static const BMDVideoConnection rgbmd_videoconns[] =
{
bmdVideoConnectionSDI,
bmdVideoConnectionHDMI,
bmdVideoConnectionOpticalSDI,
bmdVideoConnectionComponent,
bmdVideoConnectionComposite,
bmdVideoConnectionSVideo,
};
static_assert(ARRAY_SIZE(rgbmd_videoconns) == ARRAY_SIZE(ppsz_videoconns), "videoconn arrays messed up");
static_assert(ARRAY_SIZE(rgbmd_videoconns) == ARRAY_SIZE(ppsz_videoconns_text), "videoconn arrays messed up");
static const int rgi_afd_values[] = {
0, 2, 3, 4, 8, 9, 10, 11, 13, 14, 15,
};
static const char * const rgsz_afd_text[] = {
/* Note: Skip further translation - too technical */
N_("Undefined"),
"Box 16:9 (top aligned)",
"Box 14:9 (top aligned)",
"Box > 16:9 (centre aligned)",
"Same as coded frame (full frame)",
"4:3 (centre aligned)",
"16:9 (centre aligned)",
"14:9 (centre aligned)",
"4:3 (with shoot and protect 14:9 centre)",
"16:9 (with shoot and protect 14:9 centre)",
"16:9 (with shoot and protect 4:3 centre)",
};
static_assert(ARRAY_SIZE(rgi_afd_values) == ARRAY_SIZE(rgsz_afd_text), "afd arrays messed up");
static const int rgi_ar_values[] = {
0, 1,
};
static const char * const rgsz_ar_text[] = {
"4:3", "16:9",
};
static_assert(ARRAY_SIZE(rgi_ar_values) == ARRAY_SIZE(rgsz_ar_text), "afd arrays messed up");
namespace {
/* Only one audio output module and one video output module
* can be used per process.
* We use a static mutex in audio/video submodules entry points. */
struct decklink_sys_t
{
/* With LOCK */
IDeckLinkOutput *p_output;
/*
* Synchronizes aout and vout modules:
* vout module waits until aout has been initialized.
* That means video-only output is NOT supported.
*/
vlc_mutex_t lock;
vlc_cond_t cond;
uint8_t users;
bool b_videomodule;
bool b_recycling;
//int i_channels;
int i_rate;
BMDTimeScale timescale;
BMDTimeValue frameduration;
/* XXX: workaround card clock drift */
vlc_tick_t offset;
/* !With LOCK */
vlc_timer_t drain_timer;
/* single video module exclusive */
struct
{
bool tenbits;
uint8_t afd, ar;
int nosignal_delay;
picture_t *pic_nosignal;
} video;
};
} // namespace
/*****************************************************************************
* Local prototypes.
*****************************************************************************/
static int OpenVideo (vout_display_t *,
video_format_t *, vlc_video_context *);
static void CloseVideo (vout_display_t *);
static int OpenAudio (vlc_object_t *);
static void CloseAudio (vlc_object_t *);
/*****************************************************************************
* Module descriptor
*****************************************************************************/
vlc_module_begin()
set_shortname(N_("DecklinkOutput"))
set_description(N_("Output module to write to Blackmagic SDI card"))
set_section(N_("DeckLink General Options"), NULL)
add_integer(CFG_PREFIX "card-index", 0,
CARD_INDEX_TEXT, CARD_INDEX_LONGTEXT)
add_submodule ()
set_description (N_("DeckLink Video Output module"))
set_subcategory(SUBCAT_VIDEO_VOUT)
set_callback_display(OpenVideo, 0)
set_section(N_("DeckLink Video Options"), NULL)
add_string(VIDEO_CFG_PREFIX "video-connection", "sdi",
VIDEO_CONNECTION_TEXT, VIDEO_CONNECTION_LONGTEXT)
change_string_list(ppsz_videoconns, ppsz_videoconns_text)
add_string(VIDEO_CFG_PREFIX "mode", "",
MODE_TEXT, MODE_LONGTEXT)
add_bool(VIDEO_CFG_PREFIX "tenbits", true,
VIDEO_TENBITS_TEXT, VIDEO_TENBITS_LONGTEXT)
add_integer(VIDEO_CFG_PREFIX "nosignal-delay", 5,
NOSIGNAL_INDEX_TEXT, NOSIGNAL_INDEX_LONGTEXT)
add_integer(VIDEO_CFG_PREFIX "afd-line", 16,
AFDLINE_INDEX_TEXT, AFDLINE_INDEX_LONGTEXT)
add_integer_with_range(VIDEO_CFG_PREFIX "afd", 8, 0, 16,
AFD_INDEX_TEXT, nullptr)
change_integer_list(rgi_afd_values, rgsz_afd_text)
add_integer_with_range(VIDEO_CFG_PREFIX "ar", 1, 0, 1,
AR_INDEX_TEXT, AR_INDEX_LONGTEXT)
change_integer_list(rgi_ar_values, rgsz_ar_text)
add_loadfile(VIDEO_CFG_PREFIX "nosignal-image", NULL,
NOSIGNAL_IMAGE_TEXT, nullptr)
add_submodule ()
set_description (N_("DeckLink Audio Output module"))
set_subcategory(SUBCAT_AUDIO_AOUT)
set_capability("audio output", 0)
set_callbacks (OpenAudio, CloseAudio)
set_section(N_("DeckLink Audio Options"), NULL)
add_integer(AUDIO_CFG_PREFIX "audio-rate", 48000,
RATE_TEXT, RATE_LONGTEXT)
add_integer(AUDIO_CFG_PREFIX "audio-channels", 2,
CHANNELS_TEXT, CHANNELS_LONGTEXT)
vlc_module_end ()
/* Protects decklink_sys_t creation/deletion */
static vlc::threads::mutex sys_lock;
static decklink_sys_t *HoldDLSys(vlc_object_t *obj, int i_cat)
{
vlc_object_t *libvlc = VLC_OBJECT(vlc_object_instance(obj));
decklink_sys_t *sys;
sys_lock.lock();
if (var_Type(libvlc, "decklink-sys") == VLC_VAR_ADDRESS)
{
sys = (decklink_sys_t*)var_GetAddress(libvlc, "decklink-sys");
sys->users++;
if(i_cat == VIDEO_ES)
{
while(sys->b_videomodule)
{
sys_lock.unlock();
msg_Info(obj, "Waiting for previous vout module to exit");
vlc_tick_sleep(VLC_TICK_FROM_MS(100));
sys_lock.lock();
}
}
}
else
{
sys = (decklink_sys_t*)malloc(sizeof(*sys));
if (sys) {
sys->p_output = NULL;
sys->offset = 0;
sys->users = 1;
sys->b_videomodule = (i_cat == VIDEO_ES);
sys->b_recycling = false;
sys->i_rate = var_InheritInteger(obj, AUDIO_CFG_PREFIX "audio-rate");
if(sys->i_rate > 0)
sys->i_rate = -1;
vlc_mutex_init(&sys->lock);
vlc_cond_init(&sys->cond);
var_Create(libvlc, "decklink-sys", VLC_VAR_ADDRESS);
var_SetAddress(libvlc, "decklink-sys", (void*)sys);
}
}
sys_lock.unlock();
return sys;
}
static void ReleaseDLSys(vlc_object_t *obj, int i_cat)
{
vlc_object_t *libvlc = VLC_OBJECT(vlc_object_instance(obj));
sys_lock.lock();
struct decklink_sys_t *sys = (struct decklink_sys_t*)var_GetAddress(libvlc, "decklink-sys");
if (--sys->users == 0) {
msg_Dbg(obj, "Destroying decklink data");
if (sys->p_output) {
sys->p_output->StopScheduledPlayback(0, NULL, 0);
sys->p_output->DisableVideoOutput();
sys->p_output->DisableAudioOutput();
sys->p_output->Release();
}
/* Clean video specific */
if (sys->video.pic_nosignal)
picture_Release(sys->video.pic_nosignal);
free(sys);
var_Destroy(libvlc, "decklink-sys");
}
else if (i_cat == VIDEO_ES)
{
sys->b_videomodule = false;
sys->b_recycling = true;
}
sys_lock.unlock();
}
static BMDVideoConnection getVConn(vout_display_t *vd, int mask)
{
BMDVideoConnection conn = bmdVideoConnectionUnspecified;
char *psz = var_InheritString(vd, VIDEO_CFG_PREFIX "video-connection");
if (psz)
{
for(size_t i=0; i<ARRAY_SIZE(rgbmd_videoconns); i++)
{
if (!strcmp(psz, ppsz_videoconns[i]) && (mask & rgbmd_videoconns[i]))
{
conn = rgbmd_videoconns[i];
break;
}
}
free(psz);
}
else /* Pick one as default connection */
{
int iconn = vlc_ctz(mask);
conn = iconn ? BMDVideoConnection( 1 << iconn ) : bmdVideoConnectionSDI;
}
return conn;
}
/*****************************************************************************
*
*****************************************************************************/
static int OpenDecklink(vout_display_t *vd, decklink_sys_t *sys, video_format_t *fmt)
{
#define CHECK(message) do { \
if (result != S_OK) \
{ \
const char *psz_err = Decklink::Helper::ErrorToString(result); \
if(psz_err)\
msg_Err(vd, message ": %s", psz_err); \
else \
msg_Err(vd, message ":0x%" PRIHR, result); \
goto error; \
} \
} while(0)
HRESULT result;
IDeckLinkIterator *decklink_iterator = NULL;
IDeckLinkDisplayMode *p_display_mode = NULL;
IDeckLinkConfiguration *p_config = NULL;
IDeckLinkProfileAttributes *p_attributes = NULL;
IDeckLink *p_card = NULL;
void *pv;
union {
BMDDisplayMode id;
char str[4];
} wanted_mode;
wanted_mode.id = bmdModeUnknown;
vlc_mutex_lock(&sys->lock);
/* wait until aout is ready */
msg_Info(vd, "Waiting for DeckLink audio input module to start");
while (sys->i_rate == -1)
vlc_cond_wait(&sys->cond, &sys->lock);
int i_card_index = var_InheritInteger(vd, CFG_PREFIX "card-index");
char *mode = var_InheritString(vd, VIDEO_CFG_PREFIX "mode");
if(mode)
{
if (strnlen(mode, 5) > 4)
{
msg_Err(vd, "Invalid mode %s", mode);
free(mode);
goto error;
}
strncpy(wanted_mode.str, mode, 4);
free(mode);
}
if (i_card_index < 0)
{
msg_Err(vd, "Invalid card index %d", i_card_index);
goto error;
}
decklink_iterator = CreateDeckLinkIteratorInstance();
if (!decklink_iterator)
{
msg_Err(vd, "DeckLink drivers not found.");
goto error;
}
for(int i = 0; i <= i_card_index; ++i)
{
if (p_card)
p_card->Release();
result = decklink_iterator->Next(&p_card);
CHECK("Card not found");
}
decklink_str_t tmp_name;
char *psz_model_name;
result = p_card->GetModelName(&tmp_name);
CHECK("Unknown model name");
psz_model_name = DECKLINK_STRDUP(tmp_name);
DECKLINK_FREE(tmp_name);
msg_Dbg(vd, "Opened DeckLink PCI card %s", psz_model_name);
free(psz_model_name);
/* Read attributes */
result = p_card->QueryInterface(IID_IDeckLinkProfileAttributes, &pv);
CHECK("Could not get IDeckLinkAttributes");
p_attributes = static_cast<IDeckLinkProfileAttributes*>(pv);
#ifdef _WIN32
LONGLONG iconn;
#else
int64_t iconn;
#endif
BMDVideoConnection vconn;
result = p_attributes->GetInt(BMDDeckLinkVideoOutputConnections, &iconn); /* reads mask */
CHECK("Could not get BMDDeckLinkVideoOutputConnections");
result = p_card->QueryInterface(IID_IDeckLinkOutput, &pv);
CHECK("No outputs");
sys->p_output = static_cast<IDeckLinkOutput*>(pv);
result = p_card->QueryInterface(IID_IDeckLinkConfiguration, &pv);
CHECK("Could not get config interface");
p_config = static_cast<IDeckLinkConfiguration*>(pv);
/* Now configure card */
vconn = getVConn(vd, iconn);
if (vconn == bmdVideoConnectionUnspecified)
{
msg_Err(vd, "Invalid video connection specified");
goto error;
}
result = p_config->SetInt(bmdDeckLinkConfigVideoOutputConnection, vconn);
CHECK("Could not set video output connection");
p_display_mode = Decklink::Helper::MatchDisplayMode(VLC_OBJECT(vd), sys->p_output,
vd->source, wanted_mode.id);
if(p_display_mode == NULL)
{
msg_Err(vd, "Could not negotiate a compatible display mode");
goto error;
}
else
{
union {
BMDDisplayMode id;
char str[4];
} mode;
mode.id = p_display_mode->GetDisplayMode();
msg_Dbg(vd, "Selected mode '%4.4s'", mode.str);
BMDPixelFormat pixelFormat = sys->video.tenbits ? bmdFormat10BitYUV : bmdFormat8BitYUV;
BMDVideoOutputFlags flags = bmdVideoOutputVANC;
if (mode.id == bmdModeNTSC ||
mode.id == bmdModeNTSC2398 ||
mode.id == bmdModePAL)
{
flags = bmdVideoOutputVITC;
}
#ifdef _WIN32
BOOL supported;
#else
bool supported;
#endif
#if BLACKMAGIC_DECKLINK_API_VERSION < 0x0b010000
BMDDisplayModeSupport support = bmdDisplayModeNotSupported;
result = sys->p_output->DoesSupportVideoMode(mode.id,
pixelFormat,
flags,
&support,
NULL);
supported = (support != bmdDisplayModeNotSupported);
#else
result = sys->p_output->DoesSupportVideoMode(vconn,
mode.id,
pixelFormat,
bmdSupportedVideoModeDefault,
NULL,
&supported);
#endif
CHECK("Does not support video mode");
if (!supported)
{
msg_Err(vd, "Video mode not supported");
goto error;
}
if (p_display_mode->GetWidth() <= 0 || p_display_mode->GetWidth() & 1)
{
msg_Err(vd, "Unknown video mode specified.");
goto error;
}
result = p_display_mode->GetFrameRate(&sys->frameduration,
&sys->timescale);
CHECK("Could not read frame rate");
result = sys->p_output->EnableVideoOutput(mode.id, flags);
CHECK("Could not enable video output");
video_format_Copy(fmt, vd->source);
fmt->i_width = fmt->i_visible_width = p_display_mode->GetWidth();
fmt->i_height = fmt->i_visible_height = p_display_mode->GetHeight();
fmt->i_x_offset = 0;
fmt->i_y_offset = 0;
fmt->i_sar_num = 0;
fmt->i_sar_den = 0;
fmt->i_chroma = !sys->video.tenbits ? VLC_CODEC_UYVY : VLC_CODEC_I422_10L; /* we will convert to v210 */
fmt->i_frame_rate = (unsigned) sys->frameduration;
fmt->i_frame_rate_base = (unsigned) sys->timescale;
}
if (/*decklink_sys->i_channels > 0 &&*/ sys->i_rate > 0)
{
result = sys->p_output->EnableAudioOutput(
BMDAudioSampleRate(sys->i_rate),
bmdAudioSampleType16bitInteger,
/*decklink_sys->i_channels*/ 2,
bmdAudioOutputStreamTimestamped);
CHECK("Could not start audio output");
}
/* start */
result = sys->p_output->StartScheduledPlayback(
samples_from_vlc_tick(vlc_tick_now(), sys->timescale), sys->timescale, 1.0);
CHECK("Could not start playback");
p_config->Release();
p_display_mode->Release();
p_card->Release();
p_attributes->Release();
decklink_iterator->Release();
vlc_mutex_unlock(&sys->lock);
return VLC_SUCCESS;
error:
if (sys->p_output) {
sys->p_output->Release();
sys->p_output = NULL;
}
if (p_card)
p_card->Release();
if (p_config)
p_config->Release();
if (p_attributes)
p_attributes->Release();
if (decklink_iterator)
decklink_iterator->Release();
if (p_display_mode)
p_display_mode->Release();
video_format_Clean(fmt);
vlc_mutex_unlock(&sys->lock);
return VLC_EGENERIC;
#undef CHECK
}
/*****************************************************************************
* Video
*****************************************************************************/
static void PrepareVideo(vout_display_t *vd, picture_t *picture, subpicture_t *,
vlc_tick_t date)
{
decklink_sys_t *sys = (decklink_sys_t *) vd->sys;
vlc_tick_t now = vlc_tick_now();
if (!picture)
return;
if (now - date > vlc_tick_from_sec( sys->video.nosignal_delay )) {
msg_Dbg(vd, "no signal");
if (sys->video.pic_nosignal) {
picture = sys->video.pic_nosignal;
} else {
if (sys->video.tenbits) { // I422_10L
plane_t *y = &picture->p[0];
memset(y->p_pixels, 0x0, y->i_lines * y->i_pitch);
for (int i = 1; i < picture->i_planes; i++) {
plane_t *p = &picture->p[i];
size_t len = p->i_lines * p->i_pitch / 2;
int16_t *data = (int16_t*)p->p_pixels;
for (size_t j = 0; j < len; j++) // XXX: SIMD
data[j] = 0x200;
}
} else { // UYVY
size_t len = picture->p[0].i_lines * picture->p[0].i_pitch;
for (size_t i = 0; i < len; i+= 2) { // XXX: SIMD
picture->p[0].p_pixels[i+0] = 0x80;
picture->p[0].p_pixels[i+1] = 0;
}
}
}
date = now;
}
HRESULT result;
int w, h, stride, length;
w = vd->fmt->i_width;
h = vd->fmt->i_height;
IDeckLinkMutableVideoFrame *pDLVideoFrame;
result = sys->p_output->CreateVideoFrame(w, h, w*3,
sys->video.tenbits ? bmdFormat10BitYUV : bmdFormat8BitYUV,
bmdFrameFlagDefault, &pDLVideoFrame);
if (result != S_OK) {
msg_Err(vd, "Failed to create video frame:0x%" PRIHR, result);
pDLVideoFrame = NULL;
goto end;
}
void *frame_bytes;
pDLVideoFrame->GetBytes((void**)&frame_bytes);
stride = pDLVideoFrame->GetRowBytes();
if (sys->video.tenbits) {
IDeckLinkVideoFrameAncillary *vanc;
int line;
void *buf;
result = sys->p_output->CreateAncillaryData(
sys->video.tenbits ? bmdFormat10BitYUV : bmdFormat8BitYUV, &vanc);
if (result != S_OK) {
msg_Err(vd, "Failed to create vanc:0x%" PRIHR, result);
goto end;
}
line = var_InheritInteger(vd, VIDEO_CFG_PREFIX "afd-line");
result = vanc->GetBufferForVerticalBlankingLine(line, &buf);
if (result != S_OK) {
msg_Err(vd, "Failed to get VBI line %d:0x%" PRIHR, line, result);
goto end;
}
sdi::AFD afd(sys->video.afd, sys->video.ar);
afd.FillBuffer(reinterpret_cast<uint8_t*>(buf), stride);
sdi::V210::Convert(picture, stride, frame_bytes);
result = pDLVideoFrame->SetAncillaryData(vanc);
vanc->Release();
if (result != S_OK) {
msg_Err(vd, "Failed to set vanc:0x%" PRIHR, result);
goto end;
}
}
else for(int y = 0; y < h; ++y) {
uint8_t *dst = (uint8_t *)frame_bytes + stride * y;
const uint8_t *src = (const uint8_t *)picture->p[0].p_pixels +
picture->p[0].i_pitch * y;
memcpy(dst, src, w * 2 /* bpp */);
}
// compute frame duration in CLOCK_FREQ units
length = (sys->frameduration * CLOCK_FREQ) / sys->timescale;
date -= sys->offset;
result = sys->p_output->ScheduleVideoFrame(pDLVideoFrame,
date, length, CLOCK_FREQ);
if (result != S_OK) {
msg_Err(vd, "Dropped Video frame %" PRId64 ":0x%" PRIHR, date, result);
goto end;
}
now = vlc_tick_now() - sys->offset;
BMDTimeValue decklink_now;
double speed;
sys->p_output->GetScheduledStreamTime (CLOCK_FREQ, &decklink_now, &speed);
if ((now - decklink_now) > 400000) {
/* XXX: workaround card clock drift */
sys->offset += 50000;
msg_Err(vd, "Delaying: offset now %" PRId64, sys->offset);
}
end:
if (pDLVideoFrame)
pDLVideoFrame->Release();
}
static int ControlVideo(vout_display_t *vd, int query)
{
(void) vd;
switch (query) {
case VOUT_DISPLAY_CHANGE_DISPLAY_SIZE:
case VOUT_DISPLAY_CHANGE_DISPLAY_FILLED:
case VOUT_DISPLAY_CHANGE_ZOOM:
case VOUT_DISPLAY_CHANGE_SOURCE_ASPECT:
case VOUT_DISPLAY_CHANGE_SOURCE_CROP:
return VLC_SUCCESS;
}
return VLC_EGENERIC;
}
static const auto ops = []{
struct vlc_display_operations ops {};
ops.close = CloseVideo;
ops.prepare = PrepareVideo;
ops.control = ControlVideo;
return ops;
}();
static int OpenVideo(vout_display_t *vd,
video_format_t *fmtp, vlc_video_context *context)
{
VLC_UNUSED(context);
decklink_sys_t *sys = HoldDLSys(VLC_OBJECT(vd), VIDEO_ES);
if(!sys)
return VLC_ENOMEM;
bool b_init;
vlc_mutex_lock(&sys->lock);
b_init = !sys->b_recycling;
vlc_mutex_unlock(&sys->lock);
if( b_init )
{
sys->video.tenbits = var_InheritBool(vd, VIDEO_CFG_PREFIX "tenbits");
sys->video.nosignal_delay = var_InheritInteger(vd, VIDEO_CFG_PREFIX "nosignal-delay");
sys->video.afd = var_InheritInteger(vd, VIDEO_CFG_PREFIX "afd");
sys->video.ar = var_InheritInteger(vd, VIDEO_CFG_PREFIX "ar");
sys->video.pic_nosignal = NULL;
if (OpenDecklink(vd, sys, fmtp) != VLC_SUCCESS)
{
CloseVideo(vd);
return VLC_EGENERIC;
}
char *pic_file = var_InheritString(vd, VIDEO_CFG_PREFIX "nosignal-image");
if (pic_file)
{
sys->video.pic_nosignal = sdi::Generator::Picture(VLC_OBJECT(vd), pic_file, fmtp);
if (!sys->video.pic_nosignal)
msg_Err(vd, "Could not create no signal picture");
free(pic_file);
}
}
vd->ops = &ops;
vd->sys = (void *) sys;
return VLC_SUCCESS;
}
static void CloseVideo(vout_display_t *vd)
{
ReleaseDLSys(VLC_OBJECT(vd), VIDEO_ES);
}
/*****************************************************************************
* Audio
*****************************************************************************/
static void DrainReset(audio_output_t *aout)
{
decklink_sys_t *sys = (decklink_sys_t *) aout->sys;
if (sys->drain_timer != NULL)
{
vlc_timer_destroy(sys->drain_timer);
sys->drain_timer = NULL;
}
}
static void Flush(audio_output_t *aout)
{
decklink_sys_t *sys = (decklink_sys_t *) aout->sys;
vlc_mutex_lock(&sys->lock);
IDeckLinkOutput *p_output = sys->p_output;
vlc_mutex_unlock(&sys->lock);
if (!p_output)
return;
DrainReset(aout);
if (sys->p_output->FlushBufferedAudioSamples() == E_FAIL)
msg_Err(aout, "Flush failed");
}
static void DrainTimerCb(void *data)
{
audio_output_t *aout = (audio_output_t *) data;
aout_DrainedReport(aout);
}
static void Drain(audio_output_t *aout)
{
decklink_sys_t *sys = (decklink_sys_t *) aout->sys;
vlc_mutex_lock(&sys->lock);
IDeckLinkOutput *p_output = sys->p_output;
vlc_mutex_unlock(&sys->lock);
if (!p_output)
return;
assert(sys->drain_timer == NULL);
uint32_t samples;
sys->p_output->GetBufferedAudioSampleFrameCount(&samples);
if (samples == 0)
{
aout_DrainedReport(aout);
return;
}
/* Create and arm a timer to notify when drained */
int ret = vlc_timer_create(&sys->drain_timer, DrainTimerCb, aout);
if (ret != 0)
{
aout_DrainedReport(aout);
return;
}
vlc_timer_schedule(sys->drain_timer, false,
vlc_tick_from_samples(samples, sys->i_rate),
VLC_TIMER_FIRE_ONCE);
}
static int TimeGet(audio_output_t *, vlc_tick_t* restrict)
{
/* synchronization is handled by the card */
return -1;
}
static int Start(audio_output_t *aout, audio_sample_format_t *restrict fmt)
{
decklink_sys_t *sys = (decklink_sys_t *) aout->sys;
if (sys->i_rate == 0)
return VLC_EGENERIC;
fmt->i_format = VLC_CODEC_S16N;
fmt->i_channels = 2; //decklink_sys->i_channels;
fmt->i_physical_channels = AOUT_CHANS_STEREO; //pi_channels_maps[fmt->i_channels];
fmt->channel_type = AUDIO_CHANNEL_TYPE_BITMAP;
fmt->i_rate = sys->i_rate;
fmt->i_bitspersample = 16;
fmt->i_blockalign = fmt->i_channels * fmt->i_bitspersample /8 ;
fmt->i_frame_length = FRAME_SIZE;
return VLC_SUCCESS;
}
static void PlayAudio(audio_output_t *aout, block_t *audio, vlc_tick_t systempts)
{
decklink_sys_t *sys = (decklink_sys_t *) aout->sys;
vlc_mutex_lock(&sys->lock);
IDeckLinkOutput *p_output = sys->p_output;
audio->i_pts -= sys->offset;
vlc_mutex_unlock(&sys->lock);
if (!p_output) {
block_Release(audio);
return;
}
uint32_t sampleFrameCount = audio->i_buffer / (2 * 2 /*decklink_sys->i_channels*/);
uint32_t written;
HRESULT result = p_output->ScheduleAudioSamples(
audio->p_buffer, sampleFrameCount, systempts, CLOCK_FREQ, &written);
if (result != S_OK)
msg_Err(aout, "Failed to schedule audio sample:0x%" PRIHR, result);
else if (sampleFrameCount != written)
msg_Err(aout, "Written only %d samples out of %d", written, sampleFrameCount);
block_Release(audio);
}
static int OpenAudio(vlc_object_t *p_this)
{
audio_output_t *aout = (audio_output_t *)p_this;
decklink_sys_t *sys = HoldDLSys(p_this, AUDIO_ES);
if(!sys)
return VLC_ENOMEM;
aout->sys = sys;
vlc_mutex_lock(&sys->lock);
//decklink_sys->i_channels = var_InheritInteger(vd, AUDIO_CFG_PREFIX "audio-channels");
sys->i_rate = var_InheritInteger(aout, AUDIO_CFG_PREFIX "audio-rate");
vlc_cond_signal(&sys->cond);
vlc_mutex_unlock(&sys->lock);
sys->drain_timer = NULL;
aout->play = PlayAudio;
aout->start = Start;
aout->flush = Flush;
aout->drain = Drain;
aout->time_get = TimeGet;
aout->pause = aout_PauseDefault;
aout->stop = Flush;
aout->mute_set = NULL;
aout->volume_set= NULL;
return VLC_SUCCESS;
}
static void CloseAudio(vlc_object_t *p_this)
{
decklink_sys_t *sys = (decklink_sys_t *) ((audio_output_t *)p_this)->sys;
vlc_mutex_lock(&sys->lock);
vlc_mutex_unlock(&sys->lock);
ReleaseDLSys(p_this, AUDIO_ES);
}
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