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FFmpeg/libavdevice/decklink_common.cpp
Devin Heitmueller ac4247270c avdevice/decklink_enc: add support for SMPTE 2038 VANC packet output
Support decoding and embedding VANC packets delivered via SMPTE 2038
into the SDI output.  We leverage an intermediate queue because
data packets are announced separately from video but we need to embed
the data into the video frame when it is output.

Note that this patch has some additional abstraction for data
streams in general as opposed to just SMPTE 2038 packets.  This is
because subsequent patches will introduce support for other
data codecs.

Thanks to Marton Balint for review/feedback.

Signed-off-by: Devin Heitmueller <dheitmueller@ltnglobal.com>
Signed-off-by: Marton Balint <cus@passwd.hu>
2023-07-02 19:57:45 +02:00

707 lines
25 KiB
C++

/*
* Blackmagic DeckLink output
* Copyright (c) 2013-2014 Ramiro Polla, Luca Barbato, Deti Fliegl
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* Include internal.h first to avoid conflict between winsock.h (used by
* DeckLink headers) and winsock2.h (used by libavformat) in MSVC++ builds */
extern "C" {
#include "libavformat/internal.h"
}
#include <DeckLinkAPI.h>
#ifdef _WIN32
#include <DeckLinkAPI_i.c>
#else
/* The file provided by the SDK is known to be missing prototypes, which doesn't
cause issues with GCC since the warning doesn't apply to C++ files. However
Clang does complain (and warnings are treated as errors), so suppress the
warning just for this one file */
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmissing-prototypes"
#endif
#include <DeckLinkAPIDispatch.cpp>
#ifdef __clang__
#pragma clang diagnostic pop
#endif
#endif
extern "C" {
#include "libavformat/avformat.h"
#include "libavutil/imgutils.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/bswap.h"
#include "avdevice.h"
}
#include "decklink_common.h"
static IDeckLinkIterator *decklink_create_iterator(AVFormatContext *avctx)
{
IDeckLinkIterator *iter;
#ifdef _WIN32
if (CoInitialize(NULL) < 0) {
av_log(avctx, AV_LOG_ERROR, "COM initialization failed.\n");
return NULL;
}
if (CoCreateInstance(CLSID_CDeckLinkIterator, NULL, CLSCTX_ALL,
IID_IDeckLinkIterator, (void**) &iter) != S_OK) {
iter = NULL;
}
#else
iter = CreateDeckLinkIteratorInstance();
#endif
if (!iter) {
av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator. "
"Make sure you have DeckLink drivers " BLACKMAGIC_DECKLINK_API_VERSION_STRING " or newer installed.\n");
} else {
IDeckLinkAPIInformation *api;
int64_t version;
#ifdef _WIN32
if (CoCreateInstance(CLSID_CDeckLinkAPIInformation, NULL, CLSCTX_ALL,
IID_IDeckLinkAPIInformation, (void**) &api) != S_OK) {
api = NULL;
}
#else
api = CreateDeckLinkAPIInformationInstance();
#endif
if (api && api->GetInt(BMDDeckLinkAPIVersion, &version) == S_OK) {
if (version < BLACKMAGIC_DECKLINK_API_VERSION)
av_log(avctx, AV_LOG_WARNING, "Installed DeckLink drivers are too old and may be incompatible with the SDK this module was built against. "
"Make sure you have DeckLink drivers " BLACKMAGIC_DECKLINK_API_VERSION_STRING " or newer installed.\n");
} else {
av_log(avctx, AV_LOG_ERROR, "Failed to check installed DeckLink API version.\n");
}
if (api)
api->Release();
}
return iter;
}
static int decklink_get_attr_string(IDeckLink *dl, BMDDeckLinkAttributeID cfg_id, const char **s)
{
DECKLINK_STR tmp;
HRESULT hr;
IDeckLinkProfileAttributes *attr;
*s = NULL;
if (dl->QueryInterface(IID_IDeckLinkProfileAttributes, (void **)&attr) != S_OK)
return AVERROR_EXTERNAL;
hr = attr->GetString(cfg_id, &tmp);
attr->Release();
if (hr == S_OK) {
*s = DECKLINK_STRDUP(tmp);
DECKLINK_FREE(tmp);
if (!*s)
return AVERROR(ENOMEM);
} else if (hr == E_FAIL) {
return AVERROR_EXTERNAL;
}
return 0;
}
static int decklink_select_input(AVFormatContext *avctx, BMDDeckLinkConfigurationID cfg_id)
{
struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
BMDDeckLinkAttributeID attr_id = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? BMDDeckLinkAudioInputConnections : BMDDeckLinkVideoInputConnections;
int64_t bmd_input = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? (int64_t)ctx->audio_input : (int64_t)ctx->video_input;
const char *type_name = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? "audio" : "video";
int64_t supported_connections = 0;
HRESULT res;
if (bmd_input) {
res = ctx->attr->GetInt(attr_id, &supported_connections);
if (res != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Failed to query supported %s inputs.\n", type_name);
return AVERROR_EXTERNAL;
}
if ((supported_connections & bmd_input) != bmd_input) {
av_log(avctx, AV_LOG_ERROR, "Device does not support selected %s input.\n", type_name);
return AVERROR(ENOSYS);
}
res = ctx->cfg->SetInt(cfg_id, bmd_input);
if (res != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Failed to select %s input.\n", type_name);
return AVERROR_EXTERNAL;
}
}
return 0;
}
static DECKLINK_BOOL field_order_eq(enum AVFieldOrder field_order, BMDFieldDominance bmd_field_order)
{
if (field_order == AV_FIELD_UNKNOWN)
return true;
if ((field_order == AV_FIELD_TT || field_order == AV_FIELD_TB) && bmd_field_order == bmdUpperFieldFirst)
return true;
if ((field_order == AV_FIELD_BB || field_order == AV_FIELD_BT) && bmd_field_order == bmdLowerFieldFirst)
return true;
if (field_order == AV_FIELD_PROGRESSIVE && (bmd_field_order == bmdProgressiveFrame || bmd_field_order == bmdProgressiveSegmentedFrame))
return true;
return false;
}
int ff_decklink_set_configs(AVFormatContext *avctx,
decklink_direction_t direction) {
struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
HRESULT res;
if (ctx->duplex_mode) {
DECKLINK_BOOL duplex_supported = false;
#if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
IDeckLinkProfileManager *manager = NULL;
if (ctx->dl->QueryInterface(IID_IDeckLinkProfileManager, (void **)&manager) == S_OK)
duplex_supported = true;
#else
if (ctx->attr->GetFlag(BMDDeckLinkSupportsDuplexModeConfiguration, &duplex_supported) != S_OK)
duplex_supported = false;
#endif
if (duplex_supported) {
#if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
IDeckLinkProfile *profile = NULL;
BMDProfileID bmd_profile_id;
if (ctx->duplex_mode < 0 || ctx->duplex_mode >= FF_ARRAY_ELEMS(decklink_profile_id_map))
return EINVAL;
bmd_profile_id = decklink_profile_id_map[ctx->duplex_mode];
res = manager->GetProfile(bmd_profile_id, &profile);
if (res == S_OK) {
res = profile->SetActive();
profile->Release();
}
manager->Release();
#else
res = ctx->cfg->SetInt(bmdDeckLinkConfigDuplexMode, ctx->duplex_mode == 2 ? bmdDuplexModeFull : bmdDuplexModeHalf);
#endif
if (res != S_OK)
av_log(avctx, AV_LOG_WARNING, "Setting duplex mode failed.\n");
else
av_log(avctx, AV_LOG_VERBOSE, "Successfully set duplex mode to %s duplex.\n", ctx->duplex_mode == 2 || ctx->duplex_mode == 4 ? "full" : "half");
} else {
av_log(avctx, AV_LOG_WARNING, "Unable to set duplex mode, because it is not supported.\n");
}
}
if (direction == DIRECTION_IN) {
int ret;
ret = decklink_select_input(avctx, bmdDeckLinkConfigAudioInputConnection);
if (ret < 0)
return ret;
ret = decklink_select_input(avctx, bmdDeckLinkConfigVideoInputConnection);
if (ret < 0)
return ret;
}
if (direction == DIRECTION_OUT && cctx->timing_offset != INT_MIN) {
res = ctx->cfg->SetInt(bmdDeckLinkConfigReferenceInputTimingOffset, cctx->timing_offset);
if (res != S_OK)
av_log(avctx, AV_LOG_WARNING, "Setting timing offset failed.\n");
}
if (direction == DIRECTION_OUT && ctx->link > 0) {
res = ctx->cfg->SetInt(bmdDeckLinkConfigSDIOutputLinkConfiguration, ctx->link);
if (res != S_OK)
av_log(avctx, AV_LOG_WARNING, "Setting link configuration failed.\n");
else
av_log(avctx, AV_LOG_VERBOSE, "Successfully set link configuration: 0x%x.\n", ctx->link);
if (ctx->link == bmdLinkConfigurationQuadLink && cctx->sqd >= 0) {
res = ctx->cfg->SetFlag(bmdDeckLinkConfigQuadLinkSDIVideoOutputSquareDivisionSplit, cctx->sqd);
if (res != S_OK)
av_log(avctx, AV_LOG_WARNING, "Setting SquareDivisionSplit failed.\n");
else
av_log(avctx, AV_LOG_VERBOSE, "Successfully set SquareDivisionSplit.\n");
}
}
if (direction == DIRECTION_OUT && cctx->level_a >= 0) {
DECKLINK_BOOL level_a_supported = false;
if (ctx->attr->GetFlag(BMDDeckLinkSupportsSMPTELevelAOutput, &level_a_supported) != S_OK)
level_a_supported = false;
if (level_a_supported) {
res = ctx->cfg->SetFlag(bmdDeckLinkConfigSMPTELevelAOutput, cctx->level_a);
if (res != S_OK)
av_log(avctx, AV_LOG_WARNING, "Setting SMPTE levelA failed.\n");
else
av_log(avctx, AV_LOG_VERBOSE, "Successfully set SMPTE levelA.\n");
} else {
av_log(avctx, AV_LOG_WARNING, "Unable to set SMPTE levelA mode, because it is not supported.\n");
}
}
return 0;
}
int ff_decklink_set_format(AVFormatContext *avctx,
int width, int height,
int tb_num, int tb_den,
enum AVFieldOrder field_order,
decklink_direction_t direction)
{
struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
#if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
DECKLINK_BOOL support;
#else
BMDDisplayModeSupport support;
#endif
IDeckLinkDisplayModeIterator *itermode;
IDeckLinkDisplayMode *mode;
int i = 1;
HRESULT res;
av_log(avctx, AV_LOG_DEBUG, "Trying to find mode for frame size %dx%d, frame timing %d/%d, field order %d, direction %d, format code %s\n",
width, height, tb_num, tb_den, field_order, direction, cctx->format_code ? cctx->format_code : "(unset)");
if (direction == DIRECTION_IN) {
res = ctx->dli->GetDisplayModeIterator (&itermode);
} else {
res = ctx->dlo->GetDisplayModeIterator (&itermode);
}
if (res!= S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");
return AVERROR(EIO);
}
char format_buf[] = " ";
if (cctx->format_code)
memcpy(format_buf, cctx->format_code, FFMIN(strlen(cctx->format_code), sizeof(format_buf)));
BMDDisplayMode target_mode = (BMDDisplayMode)AV_RB32(format_buf);
AVRational target_tb = av_make_q(tb_num, tb_den);
ctx->bmd_mode = bmdModeUnknown;
while ((ctx->bmd_mode == bmdModeUnknown) && itermode->Next(&mode) == S_OK) {
BMDTimeValue bmd_tb_num, bmd_tb_den;
int bmd_width = mode->GetWidth();
int bmd_height = mode->GetHeight();
BMDDisplayMode bmd_mode = mode->GetDisplayMode();
BMDFieldDominance bmd_field_dominance = mode->GetFieldDominance();
mode->GetFrameRate(&bmd_tb_num, &bmd_tb_den);
AVRational mode_tb = av_make_q(bmd_tb_num, bmd_tb_den);
if ((bmd_width == width &&
bmd_height == height &&
!av_cmp_q(mode_tb, target_tb) &&
field_order_eq(field_order, bmd_field_dominance))
|| target_mode == bmd_mode) {
ctx->bmd_mode = bmd_mode;
ctx->bmd_width = bmd_width;
ctx->bmd_height = bmd_height;
ctx->bmd_tb_den = bmd_tb_den;
ctx->bmd_tb_num = bmd_tb_num;
ctx->bmd_field_dominance = bmd_field_dominance;
av_log(avctx, AV_LOG_INFO, "Found Decklink mode %d x %d with rate %.2f%s\n",
bmd_width, bmd_height, 1/av_q2d(mode_tb),
(ctx->bmd_field_dominance==bmdLowerFieldFirst || ctx->bmd_field_dominance==bmdUpperFieldFirst)?"(i)":"");
}
mode->Release();
i++;
}
itermode->Release();
if (ctx->bmd_mode == bmdModeUnknown)
return -1;
#if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b050000
if (direction == DIRECTION_IN) {
BMDDisplayMode actualMode = ctx->bmd_mode;
if (ctx->dli->DoesSupportVideoMode(ctx->video_input, ctx->bmd_mode, ctx->raw_format,
bmdNoVideoInputConversion, bmdSupportedVideoModeDefault,
&actualMode, &support) != S_OK || !support || ctx->bmd_mode != actualMode)
return -1;
} else {
BMDDisplayMode actualMode = ctx->bmd_mode;
if (ctx->dlo->DoesSupportVideoMode(bmdVideoConnectionUnspecified, ctx->bmd_mode, ctx->raw_format,
bmdNoVideoOutputConversion, bmdSupportedVideoModeDefault,
&actualMode, &support) != S_OK || !support || ctx->bmd_mode != actualMode)
return -1;
}
return 0;
#elif BLACKMAGIC_DECKLINK_API_VERSION >= 0x0b000000
if (direction == DIRECTION_IN) {
if (ctx->dli->DoesSupportVideoMode(ctx->video_input, ctx->bmd_mode, ctx->raw_format,
bmdSupportedVideoModeDefault,
&support) != S_OK)
return -1;
} else {
BMDDisplayMode actualMode = ctx->bmd_mode;
if (ctx->dlo->DoesSupportVideoMode(bmdVideoConnectionUnspecified, ctx->bmd_mode, ctx->raw_format,
bmdSupportedVideoModeDefault,
&actualMode, &support) != S_OK || !support || ctx->bmd_mode != actualMode) {
return -1;
}
}
if (support)
return 0;
#else
if (direction == DIRECTION_IN) {
if (ctx->dli->DoesSupportVideoMode(ctx->bmd_mode, ctx->raw_format,
bmdVideoOutputFlagDefault,
&support, NULL) != S_OK)
return -1;
} else {
if (!ctx->supports_vanc || ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, ctx->raw_format,
bmdVideoOutputVANC,
&support, NULL) != S_OK || support != bmdDisplayModeSupported) {
/* Try without VANC enabled */
if (ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, ctx->raw_format,
bmdVideoOutputFlagDefault,
&support, NULL) != S_OK) {
return -1;
}
ctx->supports_vanc = 0;
}
}
if (support == bmdDisplayModeSupported)
return 0;
#endif
return -1;
}
int ff_decklink_set_format(AVFormatContext *avctx, decklink_direction_t direction) {
return ff_decklink_set_format(avctx, 0, 0, 0, 0, AV_FIELD_UNKNOWN, direction);
}
void ff_decklink_packet_queue_init(AVFormatContext *avctx, DecklinkPacketQueue *q, int64_t queue_size)
{
memset(q, 0, sizeof(DecklinkPacketQueue));
pthread_mutex_init(&q->mutex, NULL);
pthread_cond_init(&q->cond, NULL);
q->avctx = avctx;
q->max_q_size = queue_size;
}
void ff_decklink_packet_queue_flush(DecklinkPacketQueue *q)
{
AVPacket pkt;
pthread_mutex_lock(&q->mutex);
while (avpriv_packet_list_get(&q->pkt_list, &pkt) == 0) {
av_packet_unref(&pkt);
}
q->nb_packets = 0;
q->size = 0;
pthread_mutex_unlock(&q->mutex);
}
void ff_decklink_packet_queue_end(DecklinkPacketQueue *q)
{
ff_decklink_packet_queue_flush(q);
pthread_mutex_destroy(&q->mutex);
pthread_cond_destroy(&q->cond);
}
unsigned long long ff_decklink_packet_queue_size(DecklinkPacketQueue *q)
{
unsigned long long size;
pthread_mutex_lock(&q->mutex);
size = q->size;
pthread_mutex_unlock(&q->mutex);
return size;
}
int ff_decklink_packet_queue_put(DecklinkPacketQueue *q, AVPacket *pkt)
{
int pkt_size = pkt->size;
int ret;
// Drop Packet if queue size is > maximum queue size
if (ff_decklink_packet_queue_size(q) > (uint64_t)q->max_q_size) {
av_packet_unref(pkt);
av_log(q->avctx, AV_LOG_WARNING, "Decklink input buffer overrun!\n");
return -1;
}
/* ensure the packet is reference counted */
if (av_packet_make_refcounted(pkt) < 0) {
av_packet_unref(pkt);
return -1;
}
pthread_mutex_lock(&q->mutex);
ret = avpriv_packet_list_put(&q->pkt_list, pkt, NULL, 0);
if (ret == 0) {
q->nb_packets++;
q->size += pkt_size + sizeof(AVPacket);
pthread_cond_signal(&q->cond);
} else {
av_packet_unref(pkt);
}
pthread_mutex_unlock(&q->mutex);
return ret;
}
int ff_decklink_packet_queue_get(DecklinkPacketQueue *q, AVPacket *pkt, int block)
{
int ret;
pthread_mutex_lock(&q->mutex);
for (;; ) {
ret = avpriv_packet_list_get(&q->pkt_list, pkt);
if (ret == 0) {
q->nb_packets--;
q->size -= pkt->size + sizeof(AVPacket);
ret = 1;
break;
} else if (!block) {
ret = 0;
break;
} else {
pthread_cond_wait(&q->cond, &q->mutex);
}
}
pthread_mutex_unlock(&q->mutex);
return ret;
}
int64_t ff_decklink_packet_queue_peekpts(DecklinkPacketQueue *q)
{
PacketListEntry *pkt1;
int64_t pts = -1;
pthread_mutex_lock(&q->mutex);
pkt1 = q->pkt_list.head;
if (pkt1) {
pts = pkt1->pkt.pts;
}
pthread_mutex_unlock(&q->mutex);
return pts;
}
int ff_decklink_list_devices(AVFormatContext *avctx,
struct AVDeviceInfoList *device_list,
int show_inputs, int show_outputs)
{
IDeckLink *dl = NULL;
IDeckLinkIterator *iter = decklink_create_iterator(avctx);
int ret = 0;
if (!iter)
return AVERROR(EIO);
while (ret == 0 && iter->Next(&dl) == S_OK) {
IDeckLinkOutput *output_config;
IDeckLinkInput *input_config;
const char *display_name = NULL;
const char *unique_name = NULL;
AVDeviceInfo *new_device = NULL;
int add = 0;
ret = decklink_get_attr_string(dl, BMDDeckLinkDisplayName, &display_name);
if (ret < 0)
goto next;
ret = decklink_get_attr_string(dl, BMDDeckLinkDeviceHandle, &unique_name);
if (ret < 0)
goto next;
if (show_outputs) {
if (dl->QueryInterface(IID_IDeckLinkOutput, (void **)&output_config) == S_OK) {
output_config->Release();
add = 1;
}
}
if (show_inputs) {
if (dl->QueryInterface(IID_IDeckLinkInput, (void **)&input_config) == S_OK) {
input_config->Release();
add = 1;
}
}
if (add == 1) {
new_device = (AVDeviceInfo *) av_mallocz(sizeof(AVDeviceInfo));
if (!new_device) {
ret = AVERROR(ENOMEM);
goto next;
}
new_device->device_name = av_strdup(unique_name ? unique_name : display_name);
new_device->device_description = av_strdup(display_name);
if (!new_device->device_name ||
!new_device->device_description ||
av_dynarray_add_nofree(&device_list->devices, &device_list->nb_devices, new_device) < 0) {
ret = AVERROR(ENOMEM);
av_freep(&new_device->device_name);
av_freep(&new_device->device_description);
av_freep(&new_device);
goto next;
}
}
next:
av_freep(&display_name);
av_freep(&unique_name);
dl->Release();
}
iter->Release();
return ret;
}
/* This is a wrapper around the ff_decklink_list_devices() which dumps the
output to av_log() and exits (for backward compatibility with the
"-list_devices" argument). */
void ff_decklink_list_devices_legacy(AVFormatContext *avctx,
int show_inputs, int show_outputs)
{
struct AVDeviceInfoList *device_list = NULL;
int ret;
device_list = (struct AVDeviceInfoList *) av_mallocz(sizeof(AVDeviceInfoList));
if (!device_list)
return;
ret = ff_decklink_list_devices(avctx, device_list, show_inputs, show_outputs);
if (ret == 0) {
av_log(avctx, AV_LOG_INFO, "Blackmagic DeckLink %s devices:\n",
show_inputs ? "input" : "output");
for (int i = 0; i < device_list->nb_devices; i++) {
av_log(avctx, AV_LOG_INFO, "\t'%s'\n", device_list->devices[i]->device_description);
}
}
avdevice_free_list_devices(&device_list);
}
int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direction)
{
struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
IDeckLinkDisplayModeIterator *itermode;
IDeckLinkDisplayMode *mode;
uint32_t format_code;
HRESULT res;
if (direction == DIRECTION_IN) {
int ret;
ret = decklink_select_input(avctx, bmdDeckLinkConfigAudioInputConnection);
if (ret < 0)
return ret;
ret = decklink_select_input(avctx, bmdDeckLinkConfigVideoInputConnection);
if (ret < 0)
return ret;
res = ctx->dli->GetDisplayModeIterator (&itermode);
} else {
res = ctx->dlo->GetDisplayModeIterator (&itermode);
}
if (res!= S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");
return AVERROR(EIO);
}
av_log(avctx, AV_LOG_INFO, "Supported formats for '%s':\n\tformat_code\tdescription",
avctx->url);
while (itermode->Next(&mode) == S_OK) {
BMDTimeValue tb_num, tb_den;
mode->GetFrameRate(&tb_num, &tb_den);
format_code = av_bswap32(mode->GetDisplayMode());
av_log(avctx, AV_LOG_INFO, "\n\t%.4s\t\t%ldx%ld at %d/%d fps",
(char*) &format_code, mode->GetWidth(), mode->GetHeight(),
(int) tb_den, (int) tb_num);
switch (mode->GetFieldDominance()) {
case bmdLowerFieldFirst:
av_log(avctx, AV_LOG_INFO, " (interlaced, lower field first)"); break;
case bmdUpperFieldFirst:
av_log(avctx, AV_LOG_INFO, " (interlaced, upper field first)"); break;
}
mode->Release();
}
av_log(avctx, AV_LOG_INFO, "\n");
itermode->Release();
return 0;
}
void ff_decklink_cleanup(AVFormatContext *avctx)
{
struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
if (ctx->dli)
ctx->dli->Release();
if (ctx->dlo)
ctx->dlo->Release();
if (ctx->attr)
ctx->attr->Release();
if (ctx->cfg)
ctx->cfg->Release();
if (ctx->dl)
ctx->dl->Release();
}
int ff_decklink_init_device(AVFormatContext *avctx, const char* name)
{
struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
IDeckLink *dl = NULL;
IDeckLinkIterator *iter = decklink_create_iterator(avctx);
if (!iter)
return AVERROR_EXTERNAL;
while (iter->Next(&dl) == S_OK) {
const char *display_name = NULL;
const char *unique_name = NULL;
decklink_get_attr_string(dl, BMDDeckLinkDisplayName, &display_name);
decklink_get_attr_string(dl, BMDDeckLinkDeviceHandle, &unique_name);
if (display_name && !strcmp(name, display_name) || unique_name && !strcmp(name, unique_name)) {
av_free((void *)unique_name);
av_free((void *)display_name);
ctx->dl = dl;
break;
}
av_free((void *)display_name);
av_free((void *)unique_name);
dl->Release();
}
iter->Release();
if (!ctx->dl)
return AVERROR(ENXIO);
if (ctx->dl->QueryInterface(IID_IDeckLinkConfiguration, (void **)&ctx->cfg) != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get configuration interface for '%s'\n", name);
ff_decklink_cleanup(avctx);
return AVERROR_EXTERNAL;
}
if (ctx->dl->QueryInterface(IID_IDeckLinkProfileAttributes, (void **)&ctx->attr) != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get attributes interface for '%s'\n", name);
ff_decklink_cleanup(avctx);
return AVERROR_EXTERNAL;
}
return 0;
}