| /* |
| * 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 |
| #include <DeckLinkAPIDispatch.cpp> |
| #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" |
| |
| #ifdef _WIN32 |
| IDeckLinkIterator *CreateDeckLinkIteratorInstance(void) |
| { |
| IDeckLinkIterator *iter; |
| |
| if (CoInitialize(NULL) < 0) { |
| av_log(NULL, AV_LOG_ERROR, "COM initialization failed.\n"); |
| return NULL; |
| } |
| |
| if (CoCreateInstance(CLSID_CDeckLinkIterator, NULL, CLSCTX_ALL, |
| IID_IDeckLinkIterator, (void**) &iter) != S_OK) { |
| av_log(NULL, AV_LOG_ERROR, "DeckLink drivers not installed.\n"); |
| return NULL; |
| } |
| |
| return iter; |
| } |
| #endif |
| |
| #ifdef _WIN32 |
| static char *dup_wchar_to_utf8(wchar_t *w) |
| { |
| char *s = NULL; |
| int l = WideCharToMultiByte(CP_UTF8, 0, w, -1, 0, 0, 0, 0); |
| s = (char *) av_malloc(l); |
| if (s) |
| WideCharToMultiByte(CP_UTF8, 0, w, -1, s, l, 0, 0); |
| return s; |
| } |
| #define DECKLINK_STR OLECHAR * |
| #define DECKLINK_STRDUP dup_wchar_to_utf8 |
| #define DECKLINK_FREE(s) SysFreeString(s) |
| #define DECKLINK_BOOL BOOL |
| #elif defined(__APPLE__) |
| static char *dup_cfstring_to_utf8(CFStringRef w) |
| { |
| char s[256]; |
| CFStringGetCString(w, s, 255, kCFStringEncodingUTF8); |
| return av_strdup(s); |
| } |
| #define DECKLINK_STR const __CFString * |
| #define DECKLINK_STRDUP dup_cfstring_to_utf8 |
| #define DECKLINK_FREE(s) CFRelease(s) |
| #define DECKLINK_BOOL bool |
| #else |
| #define DECKLINK_STR const char * |
| #define DECKLINK_STRDUP av_strdup |
| /* free() is needed for a string returned by the DeckLink SDL. */ |
| #define DECKLINK_FREE(s) free((void *) s) |
| #define DECKLINK_BOOL bool |
| #endif |
| |
| HRESULT ff_decklink_get_display_name(IDeckLink *This, const char **displayName) |
| { |
| DECKLINK_STR tmpDisplayName; |
| HRESULT hr = This->GetDisplayName(&tmpDisplayName); |
| if (hr != S_OK) |
| return hr; |
| *displayName = DECKLINK_STRDUP(tmpDisplayName); |
| DECKLINK_FREE(tmpDisplayName); |
| return hr; |
| } |
| |
| 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_format(AVFormatContext *avctx, |
| int width, int height, |
| int tb_num, int tb_den, |
| enum AVFieldOrder field_order, |
| decklink_direction_t direction, int num) |
| { |
| struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data; |
| struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx; |
| BMDDisplayModeSupport support; |
| 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, mode number %d, format code %s\n", |
| width, height, tb_num, tb_den, field_order, direction, num, (cctx->format_code) ? cctx->format_code : "(unset)"); |
| |
| if (ctx->duplex_mode) { |
| DECKLINK_BOOL duplex_supported = false; |
| |
| if (ctx->attr->GetFlag(BMDDeckLinkSupportsDuplexModeConfiguration, &duplex_supported) != S_OK) |
| duplex_supported = false; |
| |
| if (duplex_supported) { |
| res = ctx->cfg->SetInt(bmdDeckLinkConfigDuplexMode, ctx->duplex_mode == 2 ? bmdDuplexModeFull : bmdDuplexModeHalf); |
| 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 ? "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; |
| 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)) |
| || i == num |
| || 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 (direction == DIRECTION_IN) { |
| if (ctx->dli->DoesSupportVideoMode(ctx->bmd_mode, (BMDPixelFormat) cctx->raw_format, |
| bmdVideoOutputFlagDefault, |
| &support, NULL) != S_OK) |
| return -1; |
| } else { |
| if (ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, bmdFormat8BitYUV, |
| bmdVideoOutputFlagDefault, |
| &support, NULL) != S_OK) |
| return -1; |
| } |
| if (support == bmdDisplayModeSupported) |
| return 0; |
| |
| return -1; |
| } |
| |
| int ff_decklink_set_format(AVFormatContext *avctx, decklink_direction_t direction, int num) { |
| return ff_decklink_set_format(avctx, 0, 0, 0, 0, AV_FIELD_UNKNOWN, direction, num); |
| } |
| |
| int ff_decklink_list_devices(AVFormatContext *avctx, |
| struct AVDeviceInfoList *device_list, |
| int show_inputs, int show_outputs) |
| { |
| IDeckLink *dl = NULL; |
| IDeckLinkIterator *iter = CreateDeckLinkIteratorInstance(); |
| int ret = 0; |
| |
| if (!iter) { |
| av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n"); |
| 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); |
| if (!new_device->device_name) { |
| ret = AVERROR(ENOMEM); |
| goto next; |
| } |
| |
| new_device->device_description = av_strdup(displayName); |
| if (!new_device->device_description) { |
| av_freep(&new_device->device_name); |
| ret = AVERROR(ENOMEM); |
| goto next; |
| } |
| |
| if ((ret = av_dynarray_add_nofree(&device_list->devices, |
| &device_list->nb_devices, new_device)) < 0) { |
| 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; |
| } |
| |
| /* 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_name); |
| } |
| } |
| 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->filename); |
| 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 = 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; |
| } |
