int ff_decklink_list_devices(AVFormatContext *avctx) { IDeckLink *dl = NULL; IDeckLinkIterator *iter = CreateDeckLinkIteratorInstance(); if (!iter) { av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n"); return AVERROR(EIO); } av_log(avctx, AV_LOG_INFO, "Blackmagic DeckLink devices:\n"); while (iter->Next(&dl) == S_OK) { const char *displayName; ff_decklink_get_display_name(dl, &displayName); av_log(avctx, AV_LOG_INFO, "\t'%s'\n", displayName); av_free((void *) displayName); dl->Release(); } iter->Release(); return 0; }
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 = CreateDeckLinkIteratorInstance(); if (!iter) { av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n"); return AVERROR_EXTERNAL; } while (iter->Next(&dl) == S_OK) { const char *displayName; ff_decklink_get_display_name(dl, &displayName); if (!strcmp(name, displayName)) { av_free((void *)displayName); ctx->dl = dl; break; } av_free((void *)displayName); 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_IDeckLinkAttributes, (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; }
av_cold int ff_decklink_read_header(AVFormatContext *avctx) { struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data; struct decklink_ctx *ctx; IDeckLinkDisplayModeIterator *itermode; IDeckLinkIterator *iter; IDeckLink *dl = NULL; AVStream *st; HRESULT result; char fname[1024]; char *tmp; int mode_num = 0; ctx = (struct decklink_ctx *) av_mallocz(sizeof(struct decklink_ctx)); if (!ctx) return AVERROR(ENOMEM); ctx->list_devices = cctx->list_devices; ctx->list_formats = cctx->list_formats; ctx->preroll = cctx->preroll; cctx->ctx = ctx; iter = CreateDeckLinkIteratorInstance(); if (!iter) { av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n"); return AVERROR(EIO); } /* List available devices. */ if (ctx->list_devices) { ff_decklink_list_devices(avctx); return AVERROR_EXIT; } strcpy (fname, avctx->filename); tmp=strchr (fname, '@'); if (tmp != NULL) { mode_num = atoi (tmp+1); *tmp = 0; } /* Open device. */ while (iter->Next(&dl) == S_OK) { const char *displayName; ff_decklink_get_display_name(dl, &displayName); if (!strcmp(fname, displayName)) { av_free((void *) displayName); ctx->dl = dl; break; } av_free((void *) displayName); dl->Release(); } iter->Release(); if (!ctx->dl) { av_log(avctx, AV_LOG_ERROR, "Could not open '%s'\n", fname); return AVERROR(EIO); } /* Get input device. */ if (ctx->dl->QueryInterface(IID_IDeckLinkInput, (void **) &ctx->dli) != S_OK) { av_log(avctx, AV_LOG_ERROR, "Could not open output device from '%s'\n", avctx->filename); ctx->dl->Release(); return AVERROR(EIO); } /* List supported formats. */ if (ctx->list_formats) { ff_decklink_list_formats(avctx, DIRECTION_IN); ctx->dli->Release(); ctx->dl->Release(); return AVERROR_EXIT; } if (ctx->dli->GetDisplayModeIterator(&itermode) != S_OK) { av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n"); ctx->dl->Release(); return AVERROR(EIO); } if (mode_num > 0) { if (ff_decklink_set_format(avctx, DIRECTION_IN, mode_num) < 0) { av_log(avctx, AV_LOG_ERROR, "Could not set mode %d for %s\n", mode_num, fname); goto error; } } itermode->Release(); /* Setup streams. */ st = avformat_new_stream(avctx, NULL); if (!st) { av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n"); goto error; } st->codec->codec_type = AVMEDIA_TYPE_AUDIO; st->codec->codec_id = AV_CODEC_ID_PCM_S16LE; st->codec->sample_rate = bmdAudioSampleRate48kHz; st->codec->channels = 2; avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ ctx->audio_st=st; st = avformat_new_stream(avctx, NULL); if (!st) { av_log(avctx, AV_LOG_ERROR, "Cannot add stream\n"); goto error; } st->codec->codec_type = AVMEDIA_TYPE_VIDEO; st->codec->codec_id = AV_CODEC_ID_RAWVIDEO; st->codec->width = ctx->bmd_width; st->codec->height = ctx->bmd_height; st->codec->pix_fmt = AV_PIX_FMT_UYVY422; st->codec->time_base.den = ctx->bmd_tb_den; st->codec->time_base.num = ctx->bmd_tb_num; st->codec->bit_rate = avpicture_get_size(st->codec->pix_fmt, ctx->bmd_width, ctx->bmd_height) * 1/av_q2d(st->codec->time_base) * 8; st->codec->codec_tag = MKTAG('U', 'Y', 'V', 'Y'); avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in us */ ctx->video_st=st; result = ctx->dli->EnableAudioInput(bmdAudioSampleRate48kHz, bmdAudioSampleType16bitInteger, 2); if (result != S_OK) { av_log(avctx, AV_LOG_ERROR, "Cannot enable audio input\n"); goto error; } result = ctx->dli->EnableVideoInput(ctx->bmd_mode, bmdFormat8BitYUV, bmdVideoInputFlagDefault); if (result != S_OK) { av_log(avctx, AV_LOG_ERROR, "Cannot enable video input\n"); goto error; } avpacket_queue_init (avctx, &ctx->queue); if (decklink_start_input (avctx) != S_OK) { av_log(avctx, AV_LOG_ERROR, "Cannot start input stream\n"); goto error; } return 0; error: ctx->dli->Release(); ctx->dl->Release(); return AVERROR(EIO); }
av_cold int ff_decklink_write_header(AVFormatContext *avctx) { struct decklink_cctx *cctx = (struct decklink_cctx *) avctx->priv_data; struct decklink_ctx *ctx; IDeckLinkDisplayModeIterator *itermode; IDeckLinkIterator *iter; IDeckLink *dl = NULL; unsigned int n; ctx = (struct decklink_ctx *) av_mallocz(sizeof(struct decklink_ctx)); if (!ctx) return AVERROR(ENOMEM); ctx->list_devices = cctx->list_devices; ctx->list_formats = cctx->list_formats; ctx->preroll = cctx->preroll; cctx->ctx = ctx; iter = CreateDeckLinkIteratorInstance(); if (!iter) { av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n"); return AVERROR(EIO); } /* List available devices. */ if (ctx->list_devices) { ff_decklink_list_devices(avctx); return AVERROR_EXIT; } /* Open device. */ while (iter->Next(&dl) == S_OK) { const char *displayName; ff_decklink_get_display_name(dl, &displayName); if (!strcmp(avctx->filename, displayName)) { av_free((void *) displayName); ctx->dl = dl; break; } av_free((void *) displayName); dl->Release(); } iter->Release(); if (!ctx->dl) { av_log(avctx, AV_LOG_ERROR, "Could not open '%s'\n", avctx->filename); return AVERROR(EIO); } /* Get output device. */ if (ctx->dl->QueryInterface(IID_IDeckLinkOutput, (void **) &ctx->dlo) != S_OK) { av_log(avctx, AV_LOG_ERROR, "Could not open output device from '%s'\n", avctx->filename); ctx->dl->Release(); return AVERROR(EIO); } /* List supported formats. */ if (ctx->list_formats) { ff_decklink_list_formats(avctx); ctx->dlo->Release(); ctx->dl->Release(); return AVERROR_EXIT; } if (ctx->dlo->GetDisplayModeIterator(&itermode) != S_OK) { av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n"); ctx->dl->Release(); return AVERROR(EIO); } /* Setup streams. */ for (n = 0; n < avctx->nb_streams; n++) { AVStream *st = avctx->streams[n]; AVCodecContext *c = st->codec; if (c->codec_type == AVMEDIA_TYPE_AUDIO) { if (decklink_setup_audio(avctx, st)) goto error; } else if (c->codec_type == AVMEDIA_TYPE_VIDEO) { if (decklink_setup_video(avctx, st)) goto error; } else { av_log(avctx, AV_LOG_ERROR, "Unsupported stream type.\n"); goto error; } } itermode->Release(); return 0; error: ctx->dlo->Release(); ctx->dl->Release(); return AVERROR(EIO); }
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 *displayName; AVDeviceInfo *new_device = NULL; int add = 0; ff_decklink_get_display_name(dl, &displayName); 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(displayName); new_device->device_description = av_strdup(displayName); 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(&displayName); dl->Release(); } iter->Release(); return ret; }