/
decklink_enc.cpp
1838 lines (1592 loc) · 69.3 KB
/
decklink_enc.cpp
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/*
* Blackmagic DeckLink output
* Copyright (c) 2013-2014 Ramiro Polla
*
* 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
*/
#define __STDC_FORMAT_MACROS
#include <inttypes.h>
#include <atomic>
using std::atomic;
/* 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>
#include <DeckLinkAPIVersion.h>
extern "C" {
#include "libavformat/avformat.h"
#include "libavformat/ltnlog.h"
#include "libavutil/imgutils.h"
#include "libavutil/avstring.h"
#include "libavutil/vtune.h"
#include "libavutil/time.h"
#include "libavutil/sei-timestamp.h"
#include "avdevice.h"
#include "thumbnail.h"
#if CONFIG_LIBZVBI
#include <libzvbi.h>
#endif
}
#include "decklink_common.h"
#include "decklink_enc.h"
#if CONFIG_LIBKLVANC
#include "libklvanc/vanc.h"
#include "libklvanc/vanc-lines.h"
#include "libklvanc/pixels.h"
#endif
/* If the PTS of the latest audio packet is within this number of the previous
packet received, just concatenate the blocks. This is to deal with certain
encoders which provide PTS values that are slightly off from the actual number
of samples delivered. Without this, we either introduce small gaps between
the audio blocks, or we end up overwriting the last few samples of the previous
audio block. */
#define AUDIO_PTS_FUDGEFACTOR 15
/*
Debug logging levels
1 = Low frequency events and correctness checks that should always pass
2 = FIFO levels reported about once per second
3 = FIFO levels reported on every audio/video packet received
4 = General program flow (entry/exit of key functions)
*/
/* DeckLink callback class declaration */
class decklink_frame : public IDeckLinkVideoFrame
{
public:
decklink_frame(struct decklink_ctx *ctx, AVFrame *avframe, AVCodecID codec_id, int height, int width) :
_ctx(ctx), _avframe(avframe), _avpacket(NULL), _codec_id(codec_id), _ancillary(NULL), _height(height), _width(width), _refs(1) { }
decklink_frame(struct decklink_ctx *ctx, AVPacket *avpacket, AVCodecID codec_id, int height, int width) :
_ctx(ctx), _avframe(NULL), _avpacket(avpacket), _codec_id(codec_id), _ancillary(NULL), _height(height), _width(width), _refs(1) { }
virtual long STDMETHODCALLTYPE GetWidth (void) { return _width; }
virtual long STDMETHODCALLTYPE GetHeight (void) { return _height; }
virtual long STDMETHODCALLTYPE GetRowBytes (void)
{
if (_codec_id == AV_CODEC_ID_WRAPPED_AVFRAME)
return _avframe->linesize[0] < 0 ? -_avframe->linesize[0] : _avframe->linesize[0];
else
return ((GetWidth() + 47) / 48) * 128;
}
virtual BMDPixelFormat STDMETHODCALLTYPE GetPixelFormat(void)
{
if (_codec_id == AV_CODEC_ID_WRAPPED_AVFRAME)
return bmdFormat8BitYUV;
else
return bmdFormat10BitYUV;
}
virtual BMDFrameFlags STDMETHODCALLTYPE GetFlags (void)
{
if (_codec_id == AV_CODEC_ID_WRAPPED_AVFRAME)
return _avframe->linesize[0] < 0 ? bmdFrameFlagFlipVertical : bmdFrameFlagDefault;
else
return bmdFrameFlagDefault;
}
virtual HRESULT STDMETHODCALLTYPE GetBytes (void **buffer)
{
if (_codec_id == AV_CODEC_ID_WRAPPED_AVFRAME) {
if (_avframe->linesize[0] < 0)
*buffer = (void *)(_avframe->data[0] + _avframe->linesize[0] * (_avframe->height - 1));
else
*buffer = (void *)(_avframe->data[0]);
} else {
*buffer = (void *)(_avpacket->data);
}
return S_OK;
}
virtual HRESULT STDMETHODCALLTYPE GetTimecode (BMDTimecodeFormat format, IDeckLinkTimecode **timecode) { return S_FALSE; }
virtual HRESULT STDMETHODCALLTYPE GetAncillaryData(IDeckLinkVideoFrameAncillary **ancillary)
{
*ancillary = _ancillary;
if (_ancillary) {
_ancillary->AddRef();
return S_OK;
} else {
return S_FALSE;
}
}
virtual HRESULT STDMETHODCALLTYPE SetAncillaryData(IDeckLinkVideoFrameAncillary *ancillary)
{
if (_ancillary)
_ancillary->Release();
_ancillary = ancillary;
_ancillary->AddRef();
return S_OK;
}
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
virtual ULONG STDMETHODCALLTYPE AddRef(void) { return ++_refs; }
virtual ULONG STDMETHODCALLTYPE Release(void)
{
int ret = --_refs;
if (!ret) {
av_frame_free(&_avframe);
av_packet_free(&_avpacket);
if (_ancillary)
_ancillary->Release();
delete this;
}
return ret;
}
struct decklink_ctx *_ctx;
AVFrame *_avframe;
AVPacket *_avpacket;
AVCodecID _codec_id;
IDeckLinkVideoFrameAncillary *_ancillary;
int _height;
int _width;
private:
std::atomic<int> _refs;
};
static void decklink_insert_frame(AVFormatContext *_avctx, struct decklink_cctx *_cctx,
decklink_frame *frame, int64_t pts, int num_frames)
{
struct decklink_ctx *ctx = (struct decklink_ctx *)_cctx->ctx;
buffercount_type buffered;
buffercount_type vid_buffered;
BMDTimeValue streamtime;
BMDTimeValue vid_streamtime;
ctx->dlo->GetBufferedAudioSampleFrameCount(&buffered);
ctx->dlo->GetBufferedVideoFrameCount(&vid_buffered);
int ret = ctx->dlo->GetScheduledStreamTime(ctx->bmd_tb_den, &vid_streamtime, NULL);
if (ret != 0) {
av_log(_avctx, AV_LOG_WARNING, "Failed getting streamtime %d\n", ret);
}
av_log(_avctx, AV_LOG_WARNING, "Inserting %d frames (%d) (vid=%d)."
" vid_streamtime=%ld. Advancing %d audio samples\n",
num_frames, buffered, vid_buffered,
vid_streamtime / ctx->bmd_tb_num,
ctx->audio_samples_per_frame * num_frames);
ctx->dlo->GetScheduledStreamTime(48000, &streamtime, NULL);
for (int i = 0; i < num_frames; i++) {
uint32_t written;
HRESULT result;
pthread_mutex_lock(&ctx->mutex);
while (ctx->frames_buffer_available_spots == 0) {
pthread_cond_wait(&ctx->cond, &ctx->mutex);
}
ctx->frames_buffer_available_spots--;
pthread_mutex_unlock(&ctx->mutex);
ctx->video_offset++;
ctx->frameCount++;
result = ctx->dlo->ScheduleVideoFrame((class IDeckLinkVideoFrame *) frame,
(pts + ctx->video_offset) * ctx->bmd_tb_num,
ctx->bmd_tb_num, ctx->bmd_tb_den);
if (result != S_OK) {
av_log(_avctx, AV_LOG_ERROR, "Failed to schedule video frame: %d\n",
result);
}
result = ctx->dlo->ScheduleAudioSamples(ctx->empty_audio_buf,
ctx->audio_samples_per_frame, streamtime + buffered,
bmdAudioSampleRate48kHz,
&written);
if (result != S_OK) {
av_log(_avctx, AV_LOG_ERROR, "Failed to schedule audio: %d written=%d\n",
result, written);
ltnlog_stat("ERROR AUDIO", result);
} else if (written != ctx->audio_samples_per_frame) {
av_log(_avctx, AV_LOG_ERROR, "Audio write failure: requested=%d written=%d\n",
ctx->audio_samples_per_frame, written);
} else {
ltnlog_stat("PLAY AUDIO BYTES", written);
}
ctx->audio_offset += ctx->audio_samples_per_frame;
buffered += ctx->audio_samples_per_frame;
}
}
static void decklink_drop_frame(AVFormatContext *_avctx, struct decklink_cctx *_cctx,
int num_frames)
{
struct decklink_ctx *ctx = (struct decklink_ctx *)_cctx->ctx;
buffercount_type buffered;
buffercount_type vid_buffered;
ctx->dlo->GetBufferedAudioSampleFrameCount(&buffered);
ctx->dlo->GetBufferedVideoFrameCount(&vid_buffered);
av_log(_avctx, AV_LOG_WARNING, "Dropping %d frames (%d) (vid=%d).\n",
num_frames, buffered, vid_buffered);
ctx->video_offset -= num_frames;
ctx->audio_offset -= ctx->audio_samples_per_frame * num_frames;
}
class decklink_output_callback : public IDeckLinkVideoOutputCallback, public IDeckLinkAudioOutputCallback
{
public:
struct decklink_cctx *_cctx;
AVFormatContext *_avctx;
int64_t last_audio_callback;
decklink_output_callback(struct decklink_cctx *cctx, AVFormatContext *avctx) : last_audio_callback(0)
{
_cctx = cctx;
_avctx = avctx;
}
virtual HRESULT STDMETHODCALLTYPE ScheduledFrameCompleted(IDeckLinkVideoFrame *_frame, BMDOutputFrameCompletionResult result)
{
decklink_frame *frame = static_cast<decklink_frame *>(_frame);
struct decklink_ctx *ctx = frame->_ctx;
if (frame->_avpacket) {
uint8_t *side_data;
int side_data_size;
av_packet_update_pipelinestats(frame->_avpacket, AVFORMAT_OUTPUT_TIME,
av_gettime(), -1, -1);
side_data = av_packet_get_side_data(frame->_avpacket, AV_PKT_DATA_PIPELINE_STATS,
&side_data_size);
if (side_data) {
struct AVPipelineStats *stats = (struct AVPipelineStats *) side_data;
ltnlog_stat("VIDEOLATENCY_MS", (stats->avformat_output_time - stats->avformat_input_time) / 1000);
if (_cctx->latency_debug_level >= 1)
av_log(_avctx, AV_LOG_INFO,
"in_pts=%" PRId64 " a=%" PRId64 " i=%" PRId64 " r=%" PRId64 " d=%" PRId64 " e=%" PRId64 " gs=%" PRId64 " ge=%" PRId64 " es=%" PRId64 " ee=%" PRId64 " wt=%" PRId64 " wm=%" PRId64 " o=%" PRId64 "\n",
stats->input_pts, stats->avprotocol_arrival_time,
stats->avformat_input_time, stats->avformat_read_time,
stats->avcodec_decode_start, stats->avcodec_decode_end,
stats->avfilter_graph_start, stats->avfilter_graph_end,
stats->avcodec_encode_start, stats->avcodec_encode_end,
stats->avformat_write_time, stats->avformat_mod_write_time,
stats->avformat_output_time);
}
side_data = av_packet_get_side_data(frame->_avpacket, AV_PKT_DATA_SEI_UNREGISTERED,
&side_data_size);
if (side_data) {
/* MISB UUIDs */
uint8_t misb_ptp_hevc[] = { 0xa8, 0x68, 0x7d, 0xd4, 0xd7, 0x59, 0x37, 0x58, 0xa5, 0xce, 0xf0, 0x33, 0x8b, 0x65, 0x45, 0xf1 };
uint8_t misb_ptp_h264[] = { 0x4d, 0x49, 0x53, 0x50, 0x6d, 0x69, 0x63, 0x72, 0x6f, 0x73, 0x65, 0x63, 0x74, 0x69, 0x6d, 0x65 };
/* See MISB ST 0604.5 Table 1 */
if (side_data_size == 28 &&
(memcmp(side_data, misb_ptp_h264, 16) == 0 ||
memcmp(side_data, misb_ptp_hevc, 16) == 0)) {
struct timeval now, diff, encode_input;
int64_t val;
uint8_t status;
uint64_t ptp = 0;
/* Status field. See MISB ST 0603.4 Table 1 */
status = side_data[16];
if ((status & 0x80) == 0 && (status & 0x40) == 0) {
/* Locked and Normal */
ptp = ((uint64_t)side_data[17] << 56) |
((uint64_t)side_data[18] << 48) |
((uint64_t)side_data[20] << 40) |
((uint64_t)side_data[21] << 32) |
((uint64_t)side_data[23] << 24) |
((uint64_t)side_data[24] << 16) |
((uint64_t)side_data[26] << 8) |
((uint64_t)side_data[27]);
encode_input.tv_sec = ptp / 1000000;
encode_input.tv_usec = ptp % 1000000;
gettimeofday(&now, NULL);
sei_timeval_subtract(&diff, &now, &encode_input);
val = (diff.tv_sec * 1000) + (diff.tv_usec / 1000);
ltnlog_stat("GLASSTOGLASS_MS", val);
}
}
int offset = ltn_uuid_find(side_data, side_data_size);
if (offset >= 0) {
struct timeval now, diff;
struct timeval encode_input, encode_output;
int64_t val;
memset(&encode_input, 0, sizeof(struct timeval));
memset(&encode_output, 0, sizeof(struct timeval));
sei_timestamp_value_timeval_query(side_data + offset, side_data_size - offset, 2, &encode_input);
sei_timestamp_value_timeval_query(side_data + offset, side_data_size - offset, 8, &encode_output);
gettimeofday(&now, NULL);
if (encode_output.tv_sec != 0) {
sei_timeval_subtract(&diff, &encode_output, &encode_input);
val = (diff.tv_sec * 1000) + (diff.tv_usec / 1000);
} else {
val = -1;
}
ltnlog_stat("ENCODETOTAL_MS", val);
sei_timeval_subtract(&diff, &now, &encode_input);
val = (diff.tv_sec * 1000) + (diff.tv_usec / 1000);
ltnlog_stat("GLASSTOGLASS_MS", val);
}
}
}
pthread_mutex_lock(&ctx->mutex);
ctx->frames_buffer_available_spots++;
pthread_cond_broadcast(&ctx->cond);
pthread_mutex_unlock(&ctx->mutex);
switch (result) {
case bmdOutputFrameCompleted:
case bmdOutputFrameFlushed:
break;
case bmdOutputFrameDisplayedLate:
ctx->late++;
av_log(_avctx, AV_LOG_WARNING, "Video buffer late\n");
av_vtune_log_stat(DECKLINK_BUFFERS_LATE, ctx->late, 0);
ltnlog_stat("VIDEOLATE", ctx->late);
break;
case bmdOutputFrameDropped:
ctx->dropped++;
av_log(_avctx, AV_LOG_WARNING, "Video buffer dropped\n");
av_vtune_log_stat(DECKLINK_BUFFERS_DROPPED, ctx->dropped, 0);
ltnlog_stat("VIDEODROP", ctx->dropped);
break;
}
av_vtune_log_stat(DECKLINK_BUFFER_COUNT, ctx->frames_buffer_available_spots, 0);
return S_OK;
}
virtual HRESULT STDMETHODCALLTYPE ScheduledPlaybackHasStopped(void) { return S_OK; }
virtual HRESULT STDMETHODCALLTYPE RenderAudioSamples (bool preroll)
{
struct decklink_ctx *ctx = (struct decklink_ctx *)_cctx->ctx;
AVPacketList *cur, *next;
BMDTimeValue streamtime;
double speed;
/* Make sure the callback is firing on schedule. It may not be if the system is
heavily loaded */
if (_cctx->debug_level >= 1) {
int64_t current_run = av_gettime_relative();
if (!preroll && last_audio_callback != 0 &&
((current_run - last_audio_callback > 25000) ||
(current_run - last_audio_callback < 18000)) ) {
av_log(_avctx, AV_LOG_ERROR, "Audio callback not firing on schedule. last=%ld current=%ld delta=%ld\n",
last_audio_callback, current_run, current_run - last_audio_callback);
}
last_audio_callback = current_run;
}
pthread_mutex_lock(&ctx->audio_mutex);
ctx->dlo->GetScheduledStreamTime(48000, &streamtime, &speed);
buffercount_type buffered;
ctx->dlo->GetBufferedAudioSampleFrameCount(&buffered);
/* Do final Scheduling of audio at least 50ms before deadline. This ensures there
was enough time for multiple audio streams to be interleaved, while sending to
the hardware with enough time for actual output. */
int64_t window = streamtime + (bmdAudioSampleRate48kHz * 50 / 1000);
if (preroll && ctx->audio_pkt_numsamples) {
/* Throw away everything but the most recent 500ms. This is to prevent
failures that occur if you attempt to schedule more than 1 second of audio. */
int total_pkts = 0;
int keep_pkts = (bmdAudioSampleRate48kHz / 2) / ctx->audio_pkt_numsamples;
int throwaway = 0;
for (cur = ctx->output_audio_list; cur != NULL; cur = cur->next)
total_pkts++;
if (total_pkts > keep_pkts)
throwaway = total_pkts - keep_pkts;
for (cur = ctx->output_audio_list; throwaway > 0; cur = next) {
ctx->output_audio_list = cur->next;
next = cur->next;
av_packet_unref(&cur->pkt);
av_freep(&cur);
throwaway--;
}
}
for (cur = ctx->output_audio_list; cur != NULL; cur = next) {
if (_cctx->debug_level >= 4 && preroll == 0)
av_log(_avctx, AV_LOG_ERROR, "Considering audio: pts=%ld ns=%d streamtime=%ld window=%ld next=%p delta=%ld buffered=%d offset=%d\n",
cur->pkt.pts, ctx->audio_pkt_numsamples, streamtime, window, cur->next, window - cur->pkt.pts, buffered, ctx->audio_offset);
if ((cur->pkt.pts + ctx->audio_offset > window) && !preroll)
break;
uint32_t written;
if (_cctx->debug_level >= 4)
av_log(_avctx, AV_LOG_ERROR, "Scheduling audio: pts=%ld ns=%d streamtime=%ld window=%ld\n",
cur->pkt.pts, ctx->audio_pkt_numsamples, streamtime, window);
HRESULT result = ctx->dlo->ScheduleAudioSamples(cur->pkt.data,
ctx->audio_pkt_numsamples, cur->pkt.pts + ctx->audio_offset,
bmdAudioSampleRate48kHz,
&written);
if (result != S_OK) {
ltnlog_stat("ERROR AUDIO", result);
av_log(_avctx, AV_LOG_ERROR, "Failed to schedule audio: %d written=%d\n",
result, written);
} else if (written != ctx->audio_pkt_numsamples) {
av_log(_avctx, AV_LOG_ERROR, "Audio write failure: pts=%ld requested=%d written=%d\n",
cur->pkt.pts, ctx->audio_pkt_numsamples, written);
} else
ltnlog_stat("PLAY AUDIO BYTES", written);
ctx->output_audio_list = cur->next;
next = cur->next;
av_packet_unref(&cur->pkt);
av_freep(&cur);
}
if (!preroll) {
buffercount_type buffered;
buffercount_type vid_buffered;
BMDTimeValue vid_streamtime;
ctx->dlo->GetBufferedAudioSampleFrameCount(&buffered);
ctx->dlo->GetBufferedVideoFrameCount(&vid_buffered);
int ret = ctx->dlo->GetScheduledStreamTime(ctx->bmd_tb_den, &vid_streamtime, NULL);
if (ret != 0) {
av_log(_avctx, AV_LOG_WARNING, "Failed getting streamtime %d\n", ret);
}
ltnlog_stat("FIFO AUDIO BYTES", buffered);
if (ctx->playback_started && buffered < (48000 / 50)){
av_log(_avctx, AV_LOG_WARNING, "There's insufficient buffered audio (%d) (vid=%d)."
" Audio will misbehave! vid_streamtime=%ld\n", buffered, vid_buffered,
vid_streamtime / ctx->bmd_tb_num);
}
}
pthread_mutex_unlock(&ctx->audio_mutex);
return S_OK;
}
virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; }
virtual ULONG STDMETHODCALLTYPE AddRef(void) { return 1; }
virtual ULONG STDMETHODCALLTYPE Release(void) { return 1; }
};
#if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a080000
static void reset_output(AVFormatContext *avctx, struct decklink_ctx *ctx)
{
/* The decklink driver can sometimes get stuck in a state where
EnableVideoOutput always fails. To work around this issue,
call it with the last configured output mode, which causes it
to recover */
int64_t vid_mode;
int result;
result = ctx->status->GetInt(bmdDeckLinkStatusCurrentVideoOutputMode, &vid_mode);
if (result != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get current video output mode");
return;
}
result = ctx->dlo->EnableVideoOutput(vid_mode, bmdVideoOutputFlagDefault);
if (result != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get enable video output mode");
return;
}
ctx->dlo->DisableVideoOutput();
}
#endif
#if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a040000
static int setup_3g_level_a(AVFormatContext *avctx)
{
struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
DECKLINK_BOOL supports_level_a = false;
DECKLINK_BOOL level_a = false;
DECKLINK_BOOL desired_level_a = false;
HRESULT res;
if (cctx->use_3glevel_a == -1) {
/* The user didn't specify which mode they wanted to use, so output
in whatever format the system was already configured for */
return 0;
}
if (cctx->use_3glevel_a)
desired_level_a = true;
else
desired_level_a = false;
/* First check to see if the card supports 3G-SDI Level A */
res = ctx->attr->GetFlag(BMDDeckLinkSupportsSMPTELevelAOutput, &supports_level_a);
if (res != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Failed to determine if card supports Level A");
return -1;
}
if (desired_level_a && !supports_level_a) {
av_log(avctx, AV_LOG_ERROR, "User requested 3G Level A but not supported by card");
return -1;
}
/* Grab the current value so we only change it if needed */
res = ctx->cfg->GetFlag(bmdDeckLinkConfigSMPTELevelAOutput, &level_a);
if (res != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Failed to get current status of 3G Level A\n");
return -1;
}
if (level_a != desired_level_a) {
av_log(avctx, AV_LOG_INFO, "Need to %s 3G-Level A\n",
desired_level_a ? "Enable" : "Disable");
res = ctx->cfg->SetFlag(bmdDeckLinkConfigSMPTELevelAOutput, desired_level_a);
if (res != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Failed to select set output to Level A\n");
return -1;
}
res = ctx->cfg->WriteConfigurationToPreferences();
if (res != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Failed writing updated configuration\n");
return -1;
}
}
return 0;
}
#endif
static int decklink_setup_video(AVFormatContext *avctx, AVStream *st)
{
struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
AVCodecParameters *c = st->codecpar;
if (ctx->video) {
av_log(avctx, AV_LOG_ERROR, "Only one video stream is supported!\n");
return -1;
}
if (c->codec_id == AV_CODEC_ID_WRAPPED_AVFRAME) {
if (c->format != AV_PIX_FMT_UYVY422) {
av_log(avctx, AV_LOG_ERROR, "Unsupported pixel format!"
" Only AV_PIX_FMT_UYVY422 is supported.\n");
return -1;
}
ctx->raw_format = bmdFormat8BitYUV;
} else if (c->codec_id != AV_CODEC_ID_V210) {
av_log(avctx, AV_LOG_ERROR, "Unsupported codec type!"
" Only V210 and wrapped frame with AV_PIX_FMT_UYVY422 are supported.\n");
return -1;
} else {
ctx->raw_format = bmdFormat10BitYUV;
}
if (ff_decklink_set_configs(avctx, DIRECTION_OUT) < 0) {
av_log(avctx, AV_LOG_ERROR, "Could not set output configuration\n");
return -1;
}
if (ff_decklink_set_format(avctx, c->width, c->height,
st->time_base.num, st->time_base.den, c->field_order)) {
av_log(avctx, AV_LOG_ERROR, "Unsupported video size, framerate or field order!"
" Check available formats with -list_formats 1.\n");
return -1;
}
#if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a080000
reset_output(avctx, ctx);
#endif
#if BLACKMAGIC_DECKLINK_API_VERSION >= 0x0a040000
if (ctx->bmd_mode == bmdModeHD1080p50 ||
ctx->bmd_mode == bmdModeHD1080p5994 ||
ctx->bmd_mode == bmdModeHD1080p6000) {
setup_3g_level_a(avctx);
}
#endif
if (ctx->dlo->EnableVideoOutput(ctx->bmd_mode,
ctx->supports_vanc ? bmdVideoOutputVANC : bmdVideoOutputFlagDefault) != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not enable video output!\n");
return -1;
}
avpacket_queue_init (avctx, &ctx->vanc_queue);
/* Set callback. */
ctx->output_callback = new decklink_output_callback(cctx, avctx);
ctx->dlo->SetScheduledFrameCompletionCallback(ctx->output_callback);
ctx->dlo->SetAudioCallback(ctx->output_callback);
ctx->audio_samples_per_frame = bmdAudioSampleRate48kHz * st->time_base.num / st->time_base.den;
ctx->frames_preroll = ceil(st->time_base.den * ctx->preroll / st->time_base.num);
if (ctx->frames_preroll < 3) {
/* No matter what they specify as the preroll, we can't support lower than three
frames due to the way the hardware queueing works */
ctx->frames_preroll = 3;
}
/* Report the final preroll in milliseconds */
ltnlog_stat("PREROLL_TARGET", ctx->frames_preroll * st->time_base.num * 1000 / st->time_base.den);
/* Buffer twice as many frames as the preroll. */
ctx->frames_buffer = ctx->frames_preroll * 2;
ctx->frames_buffer = FFMIN(ctx->frames_buffer, 60);
/* Throw the first X frames so that all upstream FIFOs have the opportunity
to flush (to reduce realtime latency) */
ctx->frames_discard = st->time_base.den * cctx->discard / st->time_base.num;
pthread_mutex_init(&ctx->mutex, NULL);
pthread_mutex_init(&ctx->audio_mutex, NULL);
pthread_cond_init(&ctx->cond, NULL);
ctx->frames_buffer_available_spots = ctx->frames_buffer;
/* The device expects the framerate to be fixed. */
avpriv_set_pts_info(st, 64, st->time_base.num, st->time_base.den);
if (cctx->thumbnail_filename) {
thumbnail_init(&ctx->thumbnail_ctx, cctx->thumbnail_filename,
ctx->bmd_width, ctx->bmd_height, 320, 180,
cctx->thumbnail_quality);
ctx->thumbnail_frames = ceil(st->time_base.den * cctx->thumbnail_interval
/ st->time_base.num);
}
ctx->video = 1;
return 0;
}
static int decklink_setup_audio(AVFormatContext *avctx, AVStream *st)
{
struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
AVCodecParameters *c = st->codecpar;
if (st->codecpar->codec_id == AV_CODEC_ID_AC3) {
/* Regardless of the number of channels in the codec, we're only
using 2 SDI audio channels at 48000Hz */
ctx->channels += 2;
} else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE) {
if (c->sample_rate != bmdAudioSampleRate48kHz) {
av_log(avctx, AV_LOG_ERROR, "Unsupported sample rate!"
" Only 48kHz is supported.\n");
return -1;
}
ctx->channels += c->channels;
} else {
av_log(avctx, AV_LOG_ERROR, "Unsupported codec specified!"
" Only PCM_S16LE and AC-3 are supported.\n");
return -1;
}
/* The device expects the sample rate to be fixed. */
avpriv_set_pts_info(st, 64, 1, bmdAudioSampleRate48kHz);
ctx->audio++;
return 0;
}
static int decklink_enable_audio(AVFormatContext *avctx)
{
struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
/* Round up total channel count to that supported by decklink. This
means we may need to pad the output buffer when interleaving the
audio packet data... */
if (ctx->channels <= 2)
ctx->channels = 2;
else if (ctx->channels <= 8)
ctx->channels = 8;
else if (ctx->channels <= 16)
ctx->channels = 16;
ctx->empty_audio_buf = malloc(ctx->audio_samples_per_frame * ctx->channels * 2);
if (!ctx->empty_audio_buf)
return -1;
memset(ctx->empty_audio_buf, 0, ctx->audio_samples_per_frame * ctx->channels * 2);
if (ctx->dlo->EnableAudioOutput(bmdAudioSampleRate48kHz,
bmdAudioSampleType16bitInteger,
ctx->channels,
bmdAudioOutputStreamTimestamped) != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not enable audio output!\n");
return -1;
}
return 0;
}
static int decklink_setup_data(AVFormatContext *avctx, AVStream *st)
{
int ret = -1;
switch(st->codecpar->codec_id) {
#if CONFIG_LIBKLVANC
case AV_CODEC_ID_SMPTE_2038:
case AV_CODEC_ID_SCTE_104:
/* No specific setup required */
ret = 0;
break;
case AV_CODEC_ID_SCTE_35:
#if CONFIG_SCTE35TOSCTE104_BSF
if (ff_stream_add_bitstream_filter(st, "scte35toscte104", NULL) > 0) {
st->codecpar->codec_id = AV_CODEC_ID_SCTE_104;
ret = 0;
}
#else
av_log(avctx, AV_LOG_ERROR, "SCTE-35 requires scte35toscte104 BSF to be available\n");
#endif
break;
#endif
default:
av_log(avctx, AV_LOG_ERROR, "Unsupported data codec specified\n");
}
return ret;
}
av_cold int ff_decklink_write_trailer(AVFormatContext *avctx)
{
struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
if (ctx->playback_started) {
BMDTimeValue actual;
ctx->dlo->StopScheduledPlayback(ctx->last_pts * ctx->bmd_tb_num,
&actual, ctx->bmd_tb_den);
ctx->dlo->DisableVideoOutput();
if (ctx->audio) {
ctx->dlo->DisableAudioOutput();
free(ctx->empty_audio_buf);
}
}
av_log(avctx, AV_LOG_INFO, "Final stats: late=%d dropped=%d vo=%d ao=%d\n",
ctx->late, ctx->dropped, ctx->video_offset, ctx->audio_offset);
if (cctx->thumbnail_filename)
thumbnail_shutdown(&ctx->thumbnail_ctx);
ff_decklink_cleanup(avctx);
if (ctx->output_callback)
delete ctx->output_callback;
pthread_mutex_destroy(&ctx->mutex);
pthread_cond_destroy(&ctx->cond);
av_freep(&cctx->ctx);
return 0;
}
#if CONFIG_LIBKLVANC
static void construct_cc(AVFormatContext *avctx, struct decklink_cctx *cctx,
AVPacket *pkt, decklink_frame *frame,
AVStream *st, struct klvanc_line_set_s *vanc_lines)
{
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
const uint8_t *data;
int ret, size;
data = av_packet_get_side_data(pkt, AV_PKT_DATA_A53_CC, &size);
if (data && cctx->cea708_line != -1) {
struct klvanc_packet_eia_708b_s *pkt;
uint16_t *cdp;
uint16_t len;
uint8_t cc_count = size / 3;
ret = klvanc_create_eia708_cdp(&pkt);
if (ret != 0)
return;
ret = klvanc_set_framerate_EIA_708B(pkt, ctx->bmd_tb_num, ctx->bmd_tb_den);
if (ret != 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid framerate specified: %lld/%lld\n",
ctx->bmd_tb_num, ctx->bmd_tb_den);
klvanc_destroy_eia708_cdp(pkt);
return;
}
if (cc_count > KLVANC_MAX_CC_COUNT) {
av_log(avctx, AV_LOG_ERROR, "Illegal cc_count received: %d\n", cc_count);
cc_count = KLVANC_MAX_CC_COUNT;
}
/* CC data */
pkt->header.ccdata_present = 1;
pkt->header.caption_service_active = 1;
pkt->ccdata.cc_count = cc_count;
for (size_t i = 0; i < cc_count; i++) {
if (data [3*i] & 0x04)
pkt->ccdata.cc[i].cc_valid = 1;
pkt->ccdata.cc[i].cc_type = data[3*i] & 0x03;
pkt->ccdata.cc[i].cc_data[0] = data[3*i+1];
pkt->ccdata.cc[i].cc_data[1] = data[3*i+2];
}
klvanc_finalize_EIA_708B(pkt, ctx->cdp_sequence_num++);
ret = klvanc_convert_EIA_708B_to_words(pkt, &cdp, &len);
if (ret != 0) {
av_log(avctx, AV_LOG_ERROR, "Failed converting 708 packet to words\n");
return;
}
klvanc_destroy_eia708_cdp(pkt);
ret = klvanc_line_insert(ctx->vanc_ctx, vanc_lines, cdp, len,
cctx->cea708_line, 0);
free(cdp);
if (ret != 0) {
av_log(avctx, AV_LOG_ERROR, "VANC line insertion failed\n");
return;
}
ltnlog_stat("CC COUNT", cc_count);
}
}
static void construct_afd(AVFormatContext *avctx, struct decklink_cctx *cctx,
AVPacket *pkt, decklink_frame *frame,
AVStream *st, struct klvanc_line_set_s *vanc_lines)
{
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
AVBarData *bardata;
int ret, size, bardata_size;
const uint8_t *data;
data = av_packet_get_side_data(pkt, AV_PKT_DATA_AFD, &size);
bardata = (AVBarData *) av_packet_get_side_data(pkt, AV_PKT_DATA_BARDATA, &bardata_size);
if ((data || bardata) && cctx->afd_line != -1) {
struct klvanc_packet_afd_s *pkt;
uint16_t *afd;
uint16_t len;
ret = klvanc_create_AFD(&pkt);
if (ret != 0)
return;
if (data) {
ret = klvanc_set_AFD_val(pkt, data[0]);
if (ret != 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid AFD value specified: %d\n",
data[0]);
klvanc_destroy_AFD(pkt);
return;
}
}
if (bardata) {
if (bardata->top_bottom) {
pkt->barDataFlags = BARS_TOPBOTTOM;
pkt->top = bardata->top;
pkt->bottom = bardata->bottom;
} else {
pkt->barDataFlags = BARS_LEFTRIGHT;
pkt->left = bardata->left;
pkt->right = bardata->right;
}
}
/* FIXME: Should really rely on the coded_width but seems like that
is not accessible to libavdevice outputs */
if ((st->codecpar->width == 1280 && st->codecpar->height == 720) ||
(st->codecpar->width == 1920 && st->codecpar->height == 1080))
pkt->aspectRatio = ASPECT_16x9;
else
pkt->aspectRatio = ASPECT_4x3;
ret = klvanc_convert_AFD_to_words(pkt, &afd, &len);
if (ret != 0) {
av_log(avctx, AV_LOG_ERROR, "Failed converting AFD packet to words\n");
return;
}
klvanc_destroy_AFD(pkt);
ret = klvanc_line_insert(ctx->vanc_ctx, vanc_lines, afd, len,
cctx->afd_line, 0);
free(afd);
if (ret != 0) {
av_log(avctx, AV_LOG_ERROR, "VANC line insertion failed\n");
return;
}
ltnlog_stat("AFD", data[0]);
}
}
static int decklink_construct_vanc(AVFormatContext *avctx, struct decklink_cctx *cctx,
AVPacket *pkt, decklink_frame *frame,
AVStream *st)
{
struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
struct klvanc_line_set_s vanc_lines = { 0 };
int ret;
if (ctx->supports_vanc == 0)
return 0;
construct_cc(avctx, cctx, pkt, frame, st, &vanc_lines);
construct_afd(avctx, cctx, pkt, frame, st, &vanc_lines);
/* See if there any pending data packets to process */
int dequeue_size = avpacket_queue_size(&ctx->vanc_queue);
while (dequeue_size > 0) {
AVStream *vanc_st;
AVPacket vanc_pkt;
avpacket_queue_get(&ctx->vanc_queue, &vanc_pkt, 1);
dequeue_size -= (vanc_pkt.size + sizeof(AVPacketList));
if (vanc_pkt.pts + 1 < ctx->last_pts) {
av_log(avctx, AV_LOG_WARNING, "VANC packet too old, throwing away\n");
av_packet_unref(&vanc_pkt);
continue;
}
vanc_st = avctx->streams[vanc_pkt.stream_index];
if (vanc_st->codecpar->codec_id == AV_CODEC_ID_SMPTE_2038) {
struct klvanc_smpte2038_anc_data_packet_s *pkt_2038 = 0;
klvanc_smpte2038_parse_pes_payload(vanc_pkt.data, vanc_pkt.size, &pkt_2038);
if (pkt_2038 == NULL) {
av_log(avctx, AV_LOG_ERROR, "failed to decode SMPTE 2038 PES packet");
av_packet_unref(&vanc_pkt);
continue;
}
for (int i = 0; i < pkt_2038->lineCount; i++) {
struct klvanc_smpte2038_anc_data_line_s *l = &pkt_2038->lines[i];
uint16_t *vancWords = NULL;
uint16_t vancWordCount;
if (klvanc_smpte2038_convert_line_to_words(l, &vancWords,
&vancWordCount) < 0)
break;
ret = klvanc_line_insert(ctx->vanc_ctx, &vanc_lines, vancWords,
vancWordCount, l->line_number, 0);
free(vancWords);
if (ret != 0) {
av_log(avctx, AV_LOG_ERROR, "VANC line insertion failed\n");
break;
}
}
klvanc_smpte2038_anc_data_packet_free(pkt_2038);
} else if (vanc_st->codecpar->codec_id == AV_CODEC_ID_SCTE_104) {
av_log(avctx, AV_LOG_DEBUG, "SCTE-104 message to be output on decklink pts=%" PRId64 "\n",
vanc_pkt.pts);
if (cctx->scte104_line == -1) {
av_packet_unref(&vanc_pkt);
continue;