| 1 | /* |
| 2 | * Blackmagic DeckLink output |
| 3 | * Copyright (c) 2013-2014 Ramiro Polla |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | #include <DeckLinkAPI.h> |
| 23 | #ifdef _WIN32 |
| 24 | #include <DeckLinkAPI_i.c> |
| 25 | typedef unsigned long buffercount_type; |
| 26 | #else |
| 27 | #include <DeckLinkAPIDispatch.cpp> |
| 28 | typedef uint32_t buffercount_type; |
| 29 | #endif |
| 30 | |
| 31 | #include <pthread.h> |
| 32 | #include <semaphore.h> |
| 33 | |
| 34 | extern "C" { |
| 35 | #include "libavformat/avformat.h" |
| 36 | #include "libavformat/internal.h" |
| 37 | #include "libavutil/imgutils.h" |
| 38 | } |
| 39 | |
| 40 | #include "decklink_enc.h" |
| 41 | |
| 42 | class decklink_callback; |
| 43 | |
| 44 | struct decklink_ctx { |
| 45 | /* DeckLink SDK interfaces */ |
| 46 | IDeckLink *dl; |
| 47 | IDeckLinkOutput *dlo; |
| 48 | decklink_callback *callback; |
| 49 | |
| 50 | /* DeckLink mode information */ |
| 51 | IDeckLinkDisplayModeIterator *itermode; |
| 52 | BMDTimeValue bmd_tb_den; |
| 53 | BMDTimeValue bmd_tb_num; |
| 54 | BMDDisplayMode bmd_mode; |
| 55 | int bmd_width; |
| 56 | int bmd_height; |
| 57 | |
| 58 | /* Streams present */ |
| 59 | int audio; |
| 60 | int video; |
| 61 | |
| 62 | /* Status */ |
| 63 | int playback_started; |
| 64 | int64_t last_pts; |
| 65 | |
| 66 | /* Options */ |
| 67 | int list_devices; |
| 68 | int list_formats; |
| 69 | double preroll; |
| 70 | |
| 71 | int frames_preroll; |
| 72 | int frames_buffer; |
| 73 | |
| 74 | sem_t semaphore; |
| 75 | |
| 76 | int channels; |
| 77 | }; |
| 78 | |
| 79 | /* DeckLink callback class declaration */ |
| 80 | class decklink_frame : public IDeckLinkVideoFrame |
| 81 | { |
| 82 | public: |
| 83 | decklink_frame(struct decklink_ctx *ctx, AVFrame *avframe, long width, |
| 84 | long height, void *buffer) : |
| 85 | _ctx(ctx), _avframe(avframe), _width(width), |
| 86 | _height(height), _buffer(buffer), _refs(0) { } |
| 87 | |
| 88 | virtual long STDMETHODCALLTYPE GetWidth (void) { return _width; } |
| 89 | virtual long STDMETHODCALLTYPE GetHeight (void) { return _height; } |
| 90 | virtual long STDMETHODCALLTYPE GetRowBytes (void) { return _width<<1; } |
| 91 | virtual BMDPixelFormat STDMETHODCALLTYPE GetPixelFormat(void) { return bmdFormat8BitYUV; } |
| 92 | virtual BMDFrameFlags STDMETHODCALLTYPE GetFlags (void) { return bmdVideoOutputFlagDefault; } |
| 93 | virtual HRESULT STDMETHODCALLTYPE GetBytes (void **buffer) { *buffer = _buffer; return S_OK; } |
| 94 | |
| 95 | virtual HRESULT STDMETHODCALLTYPE GetTimecode (BMDTimecodeFormat format, IDeckLinkTimecode **timecode) { return S_FALSE; } |
| 96 | virtual HRESULT STDMETHODCALLTYPE GetAncillaryData(IDeckLinkVideoFrameAncillary **ancillary) { return S_FALSE; } |
| 97 | |
| 98 | virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; } |
| 99 | virtual ULONG STDMETHODCALLTYPE AddRef(void) { return ++_refs; } |
| 100 | virtual ULONG STDMETHODCALLTYPE Release(void) { if (!--_refs) delete this; return _refs; } |
| 101 | |
| 102 | struct decklink_ctx *_ctx; |
| 103 | AVFrame *_avframe; |
| 104 | |
| 105 | private: |
| 106 | long _width; |
| 107 | long _height; |
| 108 | void *_buffer; |
| 109 | int _refs; |
| 110 | }; |
| 111 | |
| 112 | class decklink_callback : public IDeckLinkVideoOutputCallback |
| 113 | { |
| 114 | public: |
| 115 | virtual HRESULT STDMETHODCALLTYPE ScheduledFrameCompleted(IDeckLinkVideoFrame *_frame, BMDOutputFrameCompletionResult result) |
| 116 | { |
| 117 | decklink_frame *frame = static_cast<decklink_frame *>(_frame); |
| 118 | struct decklink_ctx *ctx = frame->_ctx; |
| 119 | AVFrame *avframe = frame->_avframe; |
| 120 | |
| 121 | av_frame_free(&avframe); |
| 122 | |
| 123 | sem_post(&ctx->semaphore); |
| 124 | |
| 125 | return S_OK; |
| 126 | } |
| 127 | virtual HRESULT STDMETHODCALLTYPE ScheduledPlaybackHasStopped(void) { return S_OK; } |
| 128 | virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, LPVOID *ppv) { return E_NOINTERFACE; } |
| 129 | virtual ULONG STDMETHODCALLTYPE AddRef(void) { return 1; } |
| 130 | virtual ULONG STDMETHODCALLTYPE Release(void) { return 1; } |
| 131 | }; |
| 132 | |
| 133 | #ifdef _WIN32 |
| 134 | static IDeckLinkIterator *CreateDeckLinkIteratorInstance(void) |
| 135 | { |
| 136 | IDeckLinkIterator *iter; |
| 137 | |
| 138 | if (CoInitialize(NULL) != S_OK) { |
| 139 | av_log(NULL, AV_LOG_ERROR, "COM initialization failed.\n"); |
| 140 | return NULL; |
| 141 | } |
| 142 | |
| 143 | if (CoCreateInstance(CLSID_CDeckLinkIterator, NULL, CLSCTX_ALL, |
| 144 | IID_IDeckLinkIterator, (void**) &iter) != S_OK) { |
| 145 | av_log(NULL, AV_LOG_ERROR, "DeckLink drivers not installed.\n"); |
| 146 | return NULL; |
| 147 | } |
| 148 | |
| 149 | return iter; |
| 150 | } |
| 151 | #endif |
| 152 | |
| 153 | /* free() is needed for a string returned by the DeckLink SDL. */ |
| 154 | #undef free |
| 155 | |
| 156 | #ifdef _WIN32 |
| 157 | static char *dup_wchar_to_utf8(wchar_t *w) |
| 158 | { |
| 159 | char *s = NULL; |
| 160 | int l = WideCharToMultiByte(CP_UTF8, 0, w, -1, 0, 0, 0, 0); |
| 161 | s = (char *) av_malloc(l); |
| 162 | if (s) |
| 163 | WideCharToMultiByte(CP_UTF8, 0, w, -1, s, l, 0, 0); |
| 164 | return s; |
| 165 | } |
| 166 | #define DECKLINK_STR OLECHAR * |
| 167 | #define DECKLINK_STRDUP dup_wchar_to_utf8 |
| 168 | #else |
| 169 | #define DECKLINK_STR const char * |
| 170 | #define DECKLINK_STRDUP av_strdup |
| 171 | #endif |
| 172 | |
| 173 | static HRESULT IDeckLink_GetDisplayName(IDeckLink *This, const char **displayName) |
| 174 | { |
| 175 | DECKLINK_STR tmpDisplayName; |
| 176 | HRESULT hr = This->GetDisplayName(&tmpDisplayName); |
| 177 | if (hr != S_OK) |
| 178 | return hr; |
| 179 | *displayName = DECKLINK_STRDUP(tmpDisplayName); |
| 180 | free((void *) tmpDisplayName); |
| 181 | return hr; |
| 182 | } |
| 183 | |
| 184 | static int decklink_set_format(struct decklink_ctx *ctx, |
| 185 | int width, int height, |
| 186 | int tb_num, int tb_den) |
| 187 | { |
| 188 | BMDDisplayModeSupport support; |
| 189 | IDeckLinkDisplayMode *mode; |
| 190 | |
| 191 | if (tb_num == 1) { |
| 192 | tb_num *= 1000; |
| 193 | tb_den *= 1000; |
| 194 | } |
| 195 | ctx->bmd_mode = bmdModeUnknown; |
| 196 | while ((ctx->bmd_mode == bmdModeUnknown) && ctx->itermode->Next(&mode) == S_OK) { |
| 197 | BMDTimeValue bmd_tb_num, bmd_tb_den; |
| 198 | int bmd_width = mode->GetWidth(); |
| 199 | int bmd_height = mode->GetHeight(); |
| 200 | |
| 201 | mode->GetFrameRate(&bmd_tb_num, &bmd_tb_den); |
| 202 | |
| 203 | if (bmd_width == width && bmd_height == height && |
| 204 | bmd_tb_num == tb_num && bmd_tb_den == tb_den) { |
| 205 | ctx->bmd_mode = mode->GetDisplayMode(); |
| 206 | ctx->bmd_width = bmd_width; |
| 207 | ctx->bmd_height = bmd_height; |
| 208 | ctx->bmd_tb_den = bmd_tb_den; |
| 209 | ctx->bmd_tb_num = bmd_tb_num; |
| 210 | } |
| 211 | |
| 212 | mode->Release(); |
| 213 | } |
| 214 | if (ctx->bmd_mode == bmdModeUnknown) |
| 215 | return -1; |
| 216 | if (ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, bmdFormat8BitYUV, |
| 217 | bmdVideoOutputFlagDefault, |
| 218 | &support, NULL) != S_OK) |
| 219 | return -1; |
| 220 | if (support == bmdDisplayModeSupported) |
| 221 | return 0; |
| 222 | |
| 223 | return -1; |
| 224 | } |
| 225 | |
| 226 | static int decklink_setup_video(AVFormatContext *avctx, AVStream *st) |
| 227 | { |
| 228 | struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data; |
| 229 | struct decklink_ctx *ctx = (struct decklink_ctx *) cctx->ctx; |
| 230 | AVCodecContext *c = st->codec; |
| 231 | |
| 232 | if (ctx->video) { |
| 233 | av_log(avctx, AV_LOG_ERROR, "Only one video stream is supported!\n"); |
| 234 | return -1; |
| 235 | } |
| 236 | |
| 237 | if (c->pix_fmt != AV_PIX_FMT_UYVY422) { |
| 238 | av_log(avctx, AV_LOG_ERROR, "Unsupported pixel format!" |
| 239 | " Only AV_PIX_FMT_UYVY422 is supported.\n"); |
| 240 | return -1; |
| 241 | } |
| 242 | if (decklink_set_format(ctx, c->width, c->height, |
| 243 | c->time_base.num, c->time_base.den)) { |
| 244 | av_log(avctx, AV_LOG_ERROR, "Unsupported video size or framerate!" |
| 245 | " Check available formats with -list_formats 1.\n"); |
| 246 | return -1; |
| 247 | } |
| 248 | if (ctx->dlo->EnableVideoOutput(ctx->bmd_mode, |
| 249 | bmdVideoOutputFlagDefault) != S_OK) { |
| 250 | av_log(avctx, AV_LOG_ERROR, "Could not enable video output!\n"); |
| 251 | return -1; |
| 252 | } |
| 253 | |
| 254 | /* Set callback. */ |
| 255 | ctx->callback = new decklink_callback(); |
| 256 | ctx->dlo->SetScheduledFrameCompletionCallback(ctx->callback); |
| 257 | |
| 258 | /* Start video semaphore. */ |
| 259 | ctx->frames_preroll = c->time_base.den * ctx->preroll; |
| 260 | if (c->time_base.den > 1000) |
| 261 | ctx->frames_preroll /= 1000; |
| 262 | |
| 263 | /* Buffer twice as many frames as the preroll. */ |
| 264 | ctx->frames_buffer = ctx->frames_preroll * 2; |
| 265 | ctx->frames_buffer = FFMIN(ctx->frames_buffer, 60); |
| 266 | sem_init(&ctx->semaphore, 0, ctx->frames_buffer); |
| 267 | |
| 268 | /* The device expects the framerate to be fixed. */ |
| 269 | avpriv_set_pts_info(st, 64, c->time_base.num, c->time_base.den); |
| 270 | |
| 271 | ctx->video = 1; |
| 272 | |
| 273 | return 0; |
| 274 | } |
| 275 | |
| 276 | static int decklink_setup_audio(AVFormatContext *avctx, AVStream *st) |
| 277 | { |
| 278 | struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data; |
| 279 | struct decklink_ctx *ctx = (struct decklink_ctx *) cctx->ctx; |
| 280 | AVCodecContext *c = st->codec; |
| 281 | |
| 282 | if (ctx->audio) { |
| 283 | av_log(avctx, AV_LOG_ERROR, "Only one audio stream is supported!\n"); |
| 284 | return -1; |
| 285 | } |
| 286 | if (c->sample_rate != 48000) { |
| 287 | av_log(avctx, AV_LOG_ERROR, "Unsupported sample rate!" |
| 288 | " Only 48kHz is supported.\n"); |
| 289 | return -1; |
| 290 | } |
| 291 | if (c->channels != 2 && c->channels != 8) { |
| 292 | av_log(avctx, AV_LOG_ERROR, "Unsupported number of channels!" |
| 293 | " Only stereo and 7.1 are supported.\n"); |
| 294 | return -1; |
| 295 | } |
| 296 | if (ctx->dlo->EnableAudioOutput(bmdAudioSampleRate48kHz, |
| 297 | bmdAudioSampleType16bitInteger, |
| 298 | c->channels, |
| 299 | bmdAudioOutputStreamTimestamped) != S_OK) { |
| 300 | av_log(avctx, AV_LOG_ERROR, "Could not enable audio output!\n"); |
| 301 | return -1; |
| 302 | } |
| 303 | if (ctx->dlo->BeginAudioPreroll() != S_OK) { |
| 304 | av_log(avctx, AV_LOG_ERROR, "Could not begin audio preroll!\n"); |
| 305 | return -1; |
| 306 | } |
| 307 | |
| 308 | /* The device expects the sample rate to be fixed. */ |
| 309 | avpriv_set_pts_info(st, 64, 1, c->sample_rate); |
| 310 | ctx->channels = c->channels; |
| 311 | |
| 312 | ctx->audio = 1; |
| 313 | |
| 314 | return 0; |
| 315 | } |
| 316 | |
| 317 | av_cold int ff_decklink_write_trailer(AVFormatContext *avctx) |
| 318 | { |
| 319 | struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data; |
| 320 | struct decklink_ctx *ctx = (struct decklink_ctx *) cctx->ctx; |
| 321 | |
| 322 | if (ctx->playback_started) { |
| 323 | BMDTimeValue actual; |
| 324 | ctx->dlo->StopScheduledPlayback(ctx->last_pts * ctx->bmd_tb_num, |
| 325 | &actual, ctx->bmd_tb_den); |
| 326 | ctx->dlo->DisableVideoOutput(); |
| 327 | if (ctx->audio) |
| 328 | ctx->dlo->DisableAudioOutput(); |
| 329 | } |
| 330 | |
| 331 | if (ctx->dlo) |
| 332 | ctx->dlo->Release(); |
| 333 | if (ctx->dl) |
| 334 | ctx->dl->Release(); |
| 335 | |
| 336 | if (ctx->callback) |
| 337 | delete ctx->callback; |
| 338 | |
| 339 | sem_destroy(&ctx->semaphore); |
| 340 | |
| 341 | av_freep(&cctx->ctx); |
| 342 | |
| 343 | return 0; |
| 344 | } |
| 345 | |
| 346 | static int decklink_write_video_packet(AVFormatContext *avctx, AVPacket *pkt) |
| 347 | { |
| 348 | struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data; |
| 349 | struct decklink_ctx *ctx = (struct decklink_ctx *) cctx->ctx; |
| 350 | AVPicture *avpicture = (AVPicture *) pkt->data; |
| 351 | AVFrame *avframe, *tmp; |
| 352 | decklink_frame *frame; |
| 353 | buffercount_type buffered; |
| 354 | HRESULT hr; |
| 355 | |
| 356 | /* HACK while av_uncoded_frame() isn't implemented */ |
| 357 | int ret; |
| 358 | |
| 359 | tmp = av_frame_alloc(); |
| 360 | if (!tmp) |
| 361 | return AVERROR(ENOMEM); |
| 362 | tmp->format = AV_PIX_FMT_UYVY422; |
| 363 | tmp->width = ctx->bmd_width; |
| 364 | tmp->height = ctx->bmd_height; |
| 365 | ret = av_frame_get_buffer(tmp, 32); |
| 366 | if (ret < 0) { |
| 367 | av_frame_free(&tmp); |
| 368 | return ret; |
| 369 | } |
| 370 | av_image_copy(tmp->data, tmp->linesize, (const uint8_t **) avpicture->data, |
| 371 | avpicture->linesize, (AVPixelFormat) tmp->format, tmp->width, |
| 372 | tmp->height); |
| 373 | avframe = av_frame_clone(tmp); |
| 374 | av_frame_free(&tmp); |
| 375 | if (!avframe) { |
| 376 | av_log(avctx, AV_LOG_ERROR, "Could not clone video frame.\n"); |
| 377 | return AVERROR(EIO); |
| 378 | } |
| 379 | /* end HACK */ |
| 380 | |
| 381 | frame = new decklink_frame(ctx, avframe, ctx->bmd_width, ctx->bmd_height, |
| 382 | (void *) avframe->data[0]); |
| 383 | if (!frame) { |
| 384 | av_log(avctx, AV_LOG_ERROR, "Could not create new frame.\n"); |
| 385 | return AVERROR(EIO); |
| 386 | } |
| 387 | |
| 388 | /* Always keep at most one second of frames buffered. */ |
| 389 | sem_wait(&ctx->semaphore); |
| 390 | |
| 391 | /* Schedule frame for playback. */ |
| 392 | hr = ctx->dlo->ScheduleVideoFrame((struct IDeckLinkVideoFrame *) frame, |
| 393 | pkt->pts * ctx->bmd_tb_num, |
| 394 | ctx->bmd_tb_num, ctx->bmd_tb_den); |
| 395 | if (hr != S_OK) { |
| 396 | av_log(avctx, AV_LOG_ERROR, "Could not schedule video frame." |
| 397 | " error %08x.\n", (uint32_t) hr); |
| 398 | frame->Release(); |
| 399 | return AVERROR(EIO); |
| 400 | } |
| 401 | |
| 402 | ctx->dlo->GetBufferedVideoFrameCount(&buffered); |
| 403 | av_log(avctx, AV_LOG_DEBUG, "Buffered video frames: %d.\n", (int) buffered); |
| 404 | if (pkt->pts > 2 && buffered <= 2) |
| 405 | av_log(avctx, AV_LOG_WARNING, "There are not enough buffered video frames." |
| 406 | " Video may misbehave!\n"); |
| 407 | |
| 408 | /* Preroll video frames. */ |
| 409 | if (!ctx->playback_started && pkt->pts > ctx->frames_preroll) { |
| 410 | av_log(avctx, AV_LOG_DEBUG, "Ending audio preroll.\n"); |
| 411 | if (ctx->audio && ctx->dlo->EndAudioPreroll() != S_OK) { |
| 412 | av_log(avctx, AV_LOG_ERROR, "Could not end audio preroll!\n"); |
| 413 | return AVERROR(EIO); |
| 414 | } |
| 415 | av_log(avctx, AV_LOG_DEBUG, "Starting scheduled playback.\n"); |
| 416 | if (ctx->dlo->StartScheduledPlayback(0, ctx->bmd_tb_den, 1.0) != S_OK) { |
| 417 | av_log(avctx, AV_LOG_ERROR, "Could not start scheduled playback!\n"); |
| 418 | return AVERROR(EIO); |
| 419 | } |
| 420 | ctx->playback_started = 1; |
| 421 | } |
| 422 | |
| 423 | return 0; |
| 424 | } |
| 425 | |
| 426 | static int decklink_write_audio_packet(AVFormatContext *avctx, AVPacket *pkt) |
| 427 | { |
| 428 | struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data; |
| 429 | struct decklink_ctx *ctx = (struct decklink_ctx *) cctx->ctx; |
| 430 | int sample_count = pkt->size / (ctx->channels << 1); |
| 431 | buffercount_type buffered; |
| 432 | |
| 433 | ctx->dlo->GetBufferedAudioSampleFrameCount(&buffered); |
| 434 | if (pkt->pts > 1 && !buffered) |
| 435 | av_log(avctx, AV_LOG_WARNING, "There's no buffered audio." |
| 436 | " Audio will misbehave!\n"); |
| 437 | |
| 438 | if (ctx->dlo->ScheduleAudioSamples(pkt->data, sample_count, pkt->pts, |
| 439 | bmdAudioSampleRate48kHz, NULL) != S_OK) { |
| 440 | av_log(avctx, AV_LOG_ERROR, "Could not schedule audio samples.\n"); |
| 441 | return AVERROR(EIO); |
| 442 | } |
| 443 | |
| 444 | return 0; |
| 445 | } |
| 446 | |
| 447 | extern "C" { |
| 448 | |
| 449 | av_cold int ff_decklink_write_header(AVFormatContext *avctx) |
| 450 | { |
| 451 | struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data; |
| 452 | struct decklink_ctx *ctx; |
| 453 | IDeckLinkIterator *iter; |
| 454 | IDeckLink *dl = NULL; |
| 455 | unsigned int n; |
| 456 | |
| 457 | ctx = (struct decklink_ctx *) av_mallocz(sizeof(struct decklink_ctx)); |
| 458 | if (!ctx) |
| 459 | return AVERROR(ENOMEM); |
| 460 | ctx->list_devices = cctx->list_devices; |
| 461 | ctx->list_formats = cctx->list_formats; |
| 462 | ctx->preroll = cctx->preroll; |
| 463 | cctx->ctx = ctx; |
| 464 | |
| 465 | iter = CreateDeckLinkIteratorInstance(); |
| 466 | if (!iter) { |
| 467 | av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n"); |
| 468 | return AVERROR(EIO); |
| 469 | } |
| 470 | |
| 471 | /* List available devices. */ |
| 472 | if (ctx->list_devices) { |
| 473 | av_log(avctx, AV_LOG_INFO, "Blackmagic DeckLink devices:\n"); |
| 474 | while (iter->Next(&dl) == S_OK) { |
| 475 | const char *displayName; |
| 476 | IDeckLink_GetDisplayName(dl, &displayName); |
| 477 | av_log(avctx, AV_LOG_INFO, "\t'%s'\n", displayName); |
| 478 | av_free((void *) displayName); |
| 479 | dl->Release(); |
| 480 | } |
| 481 | iter->Release(); |
| 482 | return AVERROR_EXIT; |
| 483 | } |
| 484 | |
| 485 | /* Open device. */ |
| 486 | while (iter->Next(&dl) == S_OK) { |
| 487 | const char *displayName; |
| 488 | IDeckLink_GetDisplayName(dl, &displayName); |
| 489 | if (!strcmp(avctx->filename, displayName)) { |
| 490 | av_free((void *) displayName); |
| 491 | ctx->dl = dl; |
| 492 | break; |
| 493 | } |
| 494 | av_free((void *) displayName); |
| 495 | dl->Release(); |
| 496 | } |
| 497 | iter->Release(); |
| 498 | if (!ctx->dl) { |
| 499 | av_log(avctx, AV_LOG_ERROR, "Could not open '%s'\n", avctx->filename); |
| 500 | return AVERROR(EIO); |
| 501 | } |
| 502 | |
| 503 | /* Get output device. */ |
| 504 | if (ctx->dl->QueryInterface(IID_IDeckLinkOutput, (void **) &ctx->dlo) != S_OK) { |
| 505 | av_log(avctx, AV_LOG_ERROR, "Could not open output device from '%s'\n", |
| 506 | avctx->filename); |
| 507 | ctx->dl->Release(); |
| 508 | return AVERROR(EIO); |
| 509 | } |
| 510 | |
| 511 | if (ctx->dlo->GetDisplayModeIterator(&ctx->itermode) != S_OK) { |
| 512 | av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n"); |
| 513 | ctx->dl->Release(); |
| 514 | return AVERROR(EIO); |
| 515 | } |
| 516 | |
| 517 | /* List supported formats. */ |
| 518 | if (ctx->list_formats) { |
| 519 | IDeckLinkDisplayMode *mode; |
| 520 | |
| 521 | av_log(avctx, AV_LOG_INFO, "Supported formats for '%s':\n", |
| 522 | avctx->filename); |
| 523 | while (ctx->itermode->Next(&mode) == S_OK) { |
| 524 | BMDTimeValue tb_num, tb_den; |
| 525 | mode->GetFrameRate(&tb_num, &tb_den); |
| 526 | av_log(avctx, AV_LOG_INFO, "\t%ldx%ld at %d/%d fps", |
| 527 | mode->GetWidth(), mode->GetHeight(), |
| 528 | (int) tb_den, (int) tb_num); |
| 529 | switch (mode->GetFieldDominance()) { |
| 530 | case bmdLowerFieldFirst: |
| 531 | av_log(avctx, AV_LOG_INFO, " (interlaced, lower field first)"); break; |
| 532 | case bmdUpperFieldFirst: |
| 533 | av_log(avctx, AV_LOG_INFO, " (interlaced, upper field first)"); break; |
| 534 | } |
| 535 | av_log(avctx, AV_LOG_INFO, "\n"); |
| 536 | mode->Release(); |
| 537 | } |
| 538 | |
| 539 | ctx->itermode->Release(); |
| 540 | ctx->dlo->Release(); |
| 541 | ctx->dl->Release(); |
| 542 | return AVERROR_EXIT; |
| 543 | } |
| 544 | |
| 545 | /* Setup streams. */ |
| 546 | for (n = 0; n < avctx->nb_streams; n++) { |
| 547 | AVStream *st = avctx->streams[n]; |
| 548 | AVCodecContext *c = st->codec; |
| 549 | if (c->codec_type == AVMEDIA_TYPE_AUDIO) { |
| 550 | if (decklink_setup_audio(avctx, st)) |
| 551 | goto error; |
| 552 | } else if (c->codec_type == AVMEDIA_TYPE_VIDEO) { |
| 553 | if (decklink_setup_video(avctx, st)) |
| 554 | goto error; |
| 555 | } else { |
| 556 | av_log(avctx, AV_LOG_ERROR, "Unsupported stream type.\n"); |
| 557 | goto error; |
| 558 | } |
| 559 | } |
| 560 | ctx->itermode->Release(); |
| 561 | |
| 562 | return 0; |
| 563 | |
| 564 | error: |
| 565 | |
| 566 | ctx->dlo->Release(); |
| 567 | ctx->dl->Release(); |
| 568 | |
| 569 | return AVERROR(EIO); |
| 570 | } |
| 571 | |
| 572 | int ff_decklink_write_packet(AVFormatContext *avctx, AVPacket *pkt) |
| 573 | { |
| 574 | struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data; |
| 575 | struct decklink_ctx *ctx = (struct decklink_ctx *) cctx->ctx; |
| 576 | AVStream *st = avctx->streams[pkt->stream_index]; |
| 577 | |
| 578 | ctx->last_pts = FFMAX(ctx->last_pts, pkt->pts); |
| 579 | |
| 580 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) |
| 581 | return decklink_write_video_packet(avctx, pkt); |
| 582 | else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) |
| 583 | return decklink_write_audio_packet(avctx, pkt); |
| 584 | |
| 585 | return AVERROR(EIO); |
| 586 | } |
| 587 | |
| 588 | } /* extern "C" */ |