mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-20 00:05:06 +02:00
![Aaron Levinson](/assets/img/avatar_default.png)
Purpose: Made minor changes to get the decklink avdevice code to build using Visual C++. Notes: Made changes to configure per Hendrik Leppkes's review of first and second versions of patch. Also made slight alterations per Marton Balint's reviews. Comments: -- configure: Added if enabled decklink section and setting decklink_indev_extralibs and decklink_outdev_extralibs here for both mingw and Windows. Also eliminated the setting of these variables in the mingw section earlier in the file. -- libavdevice/decklink_common.cpp: Switched the order of the include of libavformat/internal.h to workaround build issues with Visual C++. See comment in file for more details. -- libavdevice/decklink_dec.cpp: a) Rearranged the include of libavformat/internal.h (for reasons as described above). b) Made slight alteration to an argument for call to av_rescale_q() to workaround a compiler error with Visual C++. This appears to only be an issue when building C++ files with Visual C++. See comment in code for more details. -- libavdevice/decklink_enc.cpp: Rearranged the include of libavformat/internal.h (for reasons as described above). Signed-off-by: Aaron Levinson <alevinsn@aracnet.com> Signed-off-by: Marton Balint <cus@passwd.hu>
392 lines
14 KiB
C++
392 lines
14 KiB
C++
/*
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* Blackmagic DeckLink output
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* Copyright (c) 2013-2014 Ramiro Polla, Luca Barbato, Deti Fliegl
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/* Include internal.h first to avoid conflict between winsock.h (used by
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* DeckLink headers) and winsock2.h (used by libavformat) in MSVC++ builds */
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extern "C" {
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#include "libavformat/internal.h"
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}
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#include <DeckLinkAPI.h>
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#ifdef _WIN32
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#include <DeckLinkAPI_i.c>
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#else
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#include <DeckLinkAPIDispatch.cpp>
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#endif
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extern "C" {
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#include "libavformat/avformat.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/bswap.h"
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}
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#include "decklink_common.h"
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#ifdef _WIN32
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IDeckLinkIterator *CreateDeckLinkIteratorInstance(void)
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{
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IDeckLinkIterator *iter;
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if (CoInitialize(NULL) < 0) {
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av_log(NULL, AV_LOG_ERROR, "COM initialization failed.\n");
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return NULL;
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}
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if (CoCreateInstance(CLSID_CDeckLinkIterator, NULL, CLSCTX_ALL,
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IID_IDeckLinkIterator, (void**) &iter) != S_OK) {
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av_log(NULL, AV_LOG_ERROR, "DeckLink drivers not installed.\n");
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return NULL;
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}
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return iter;
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}
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#endif
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#ifdef _WIN32
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static char *dup_wchar_to_utf8(wchar_t *w)
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{
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char *s = NULL;
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int l = WideCharToMultiByte(CP_UTF8, 0, w, -1, 0, 0, 0, 0);
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s = (char *) av_malloc(l);
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if (s)
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WideCharToMultiByte(CP_UTF8, 0, w, -1, s, l, 0, 0);
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return s;
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}
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#define DECKLINK_STR OLECHAR *
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#define DECKLINK_STRDUP dup_wchar_to_utf8
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#define DECKLINK_FREE(s) SysFreeString(s)
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#define DECKLINK_BOOL BOOL
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#elif defined(__APPLE__)
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static char *dup_cfstring_to_utf8(CFStringRef w)
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{
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char s[256];
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CFStringGetCString(w, s, 255, kCFStringEncodingUTF8);
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return av_strdup(s);
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}
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#define DECKLINK_STR const __CFString *
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#define DECKLINK_STRDUP dup_cfstring_to_utf8
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#define DECKLINK_FREE(s) free((void *) s)
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#define DECKLINK_BOOL bool
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#else
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#define DECKLINK_STR const char *
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#define DECKLINK_STRDUP av_strdup
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/* free() is needed for a string returned by the DeckLink SDL. */
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#define DECKLINK_FREE(s) free((void *) s)
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#define DECKLINK_BOOL bool
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#endif
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HRESULT ff_decklink_get_display_name(IDeckLink *This, const char **displayName)
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{
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DECKLINK_STR tmpDisplayName;
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HRESULT hr = This->GetDisplayName(&tmpDisplayName);
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if (hr != S_OK)
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return hr;
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*displayName = DECKLINK_STRDUP(tmpDisplayName);
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DECKLINK_FREE(tmpDisplayName);
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return hr;
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}
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static int decklink_select_input(AVFormatContext *avctx, BMDDeckLinkConfigurationID cfg_id)
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{
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struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
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struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
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BMDDeckLinkAttributeID attr_id = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? BMDDeckLinkAudioInputConnections : BMDDeckLinkVideoInputConnections;
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int64_t bmd_input = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? (int64_t)ctx->audio_input : (int64_t)ctx->video_input;
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const char *type_name = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? "audio" : "video";
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int64_t supported_connections = 0;
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HRESULT res;
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if (bmd_input) {
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res = ctx->attr->GetInt(attr_id, &supported_connections);
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if (res != S_OK) {
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av_log(avctx, AV_LOG_ERROR, "Failed to query supported %s inputs.\n", type_name);
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return AVERROR_EXTERNAL;
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}
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if ((supported_connections & bmd_input) != bmd_input) {
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av_log(avctx, AV_LOG_ERROR, "Device does not support selected %s input.\n", type_name);
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return AVERROR(ENOSYS);
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}
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res = ctx->cfg->SetInt(cfg_id, bmd_input);
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if (res != S_OK) {
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av_log(avctx, AV_LOG_ERROR, "Failed to select %s input.\n", type_name);
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return AVERROR_EXTERNAL;
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}
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}
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return 0;
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}
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static DECKLINK_BOOL field_order_eq(enum AVFieldOrder field_order, BMDFieldDominance bmd_field_order)
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{
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if (field_order == AV_FIELD_UNKNOWN)
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return true;
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if ((field_order == AV_FIELD_TT || field_order == AV_FIELD_TB) && bmd_field_order == bmdUpperFieldFirst)
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return true;
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if ((field_order == AV_FIELD_BB || field_order == AV_FIELD_BT) && bmd_field_order == bmdLowerFieldFirst)
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return true;
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if (field_order == AV_FIELD_PROGRESSIVE && (bmd_field_order == bmdProgressiveFrame || bmd_field_order == bmdProgressiveSegmentedFrame))
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return true;
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return false;
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}
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int ff_decklink_set_format(AVFormatContext *avctx,
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int width, int height,
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int tb_num, int tb_den,
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enum AVFieldOrder field_order,
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decklink_direction_t direction, int num)
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{
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struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
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struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
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BMDDisplayModeSupport support;
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IDeckLinkDisplayModeIterator *itermode;
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IDeckLinkDisplayMode *mode;
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int i = 1;
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HRESULT res;
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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",
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width, height, tb_num, tb_den, field_order, direction, num, (cctx->format_code) ? cctx->format_code : "(unset)");
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if (ctx->duplex_mode) {
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DECKLINK_BOOL duplex_supported = false;
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if (ctx->attr->GetFlag(BMDDeckLinkSupportsDuplexModeConfiguration, &duplex_supported) != S_OK)
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duplex_supported = false;
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if (duplex_supported) {
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res = ctx->cfg->SetInt(bmdDeckLinkConfigDuplexMode, ctx->duplex_mode == 2 ? bmdDuplexModeFull : bmdDuplexModeHalf);
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if (res != S_OK)
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av_log(avctx, AV_LOG_WARNING, "Setting duplex mode failed.\n");
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else
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av_log(avctx, AV_LOG_VERBOSE, "Successfully set duplex mode to %s duplex.\n", ctx->duplex_mode == 2 ? "full" : "half");
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} else {
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av_log(avctx, AV_LOG_WARNING, "Unable to set duplex mode, because it is not supported.\n");
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}
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}
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if (direction == DIRECTION_IN) {
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int ret;
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ret = decklink_select_input(avctx, bmdDeckLinkConfigAudioInputConnection);
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if (ret < 0)
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return ret;
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ret = decklink_select_input(avctx, bmdDeckLinkConfigVideoInputConnection);
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if (ret < 0)
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return ret;
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res = ctx->dli->GetDisplayModeIterator (&itermode);
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} else {
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res = ctx->dlo->GetDisplayModeIterator (&itermode);
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}
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if (res!= S_OK) {
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av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");
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return AVERROR(EIO);
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}
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char format_buf[] = " ";
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if (cctx->format_code)
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memcpy(format_buf, cctx->format_code, FFMIN(strlen(cctx->format_code), sizeof(format_buf)));
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BMDDisplayMode target_mode = (BMDDisplayMode)AV_RB32(format_buf);
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AVRational target_tb = av_make_q(tb_num, tb_den);
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ctx->bmd_mode = bmdModeUnknown;
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while ((ctx->bmd_mode == bmdModeUnknown) && itermode->Next(&mode) == S_OK) {
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BMDTimeValue bmd_tb_num, bmd_tb_den;
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int bmd_width = mode->GetWidth();
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int bmd_height = mode->GetHeight();
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BMDDisplayMode bmd_mode = mode->GetDisplayMode();
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BMDFieldDominance bmd_field_dominance = mode->GetFieldDominance();
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mode->GetFrameRate(&bmd_tb_num, &bmd_tb_den);
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AVRational mode_tb = av_make_q(bmd_tb_num, bmd_tb_den);
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if ((bmd_width == width &&
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bmd_height == height &&
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!av_cmp_q(mode_tb, target_tb) &&
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field_order_eq(field_order, bmd_field_dominance))
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|| i == num
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|| target_mode == bmd_mode) {
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ctx->bmd_mode = bmd_mode;
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ctx->bmd_width = bmd_width;
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ctx->bmd_height = bmd_height;
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ctx->bmd_tb_den = bmd_tb_den;
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ctx->bmd_tb_num = bmd_tb_num;
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ctx->bmd_field_dominance = bmd_field_dominance;
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av_log(avctx, AV_LOG_INFO, "Found Decklink mode %d x %d with rate %.2f%s\n",
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bmd_width, bmd_height, 1/av_q2d(mode_tb),
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(ctx->bmd_field_dominance==bmdLowerFieldFirst || ctx->bmd_field_dominance==bmdUpperFieldFirst)?"(i)":"");
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}
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mode->Release();
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i++;
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}
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itermode->Release();
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if (ctx->bmd_mode == bmdModeUnknown)
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return -1;
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if (direction == DIRECTION_IN) {
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if (ctx->dli->DoesSupportVideoMode(ctx->bmd_mode, bmdFormat8BitYUV,
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bmdVideoOutputFlagDefault,
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&support, NULL) != S_OK)
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return -1;
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} else {
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if (ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, bmdFormat8BitYUV,
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bmdVideoOutputFlagDefault,
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&support, NULL) != S_OK)
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return -1;
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}
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if (support == bmdDisplayModeSupported)
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return 0;
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return -1;
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}
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int ff_decklink_set_format(AVFormatContext *avctx, decklink_direction_t direction, int num) {
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return ff_decklink_set_format(avctx, 0, 0, 0, 0, AV_FIELD_UNKNOWN, direction, num);
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}
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int ff_decklink_list_devices(AVFormatContext *avctx)
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{
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IDeckLink *dl = NULL;
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IDeckLinkIterator *iter = CreateDeckLinkIteratorInstance();
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if (!iter) {
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av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n");
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return AVERROR(EIO);
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}
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av_log(avctx, AV_LOG_INFO, "Blackmagic DeckLink devices:\n");
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while (iter->Next(&dl) == S_OK) {
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const char *displayName;
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ff_decklink_get_display_name(dl, &displayName);
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av_log(avctx, AV_LOG_INFO, "\t'%s'\n", displayName);
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av_free((void *) displayName);
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dl->Release();
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}
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iter->Release();
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return 0;
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}
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int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direction)
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{
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struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
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struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
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IDeckLinkDisplayModeIterator *itermode;
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IDeckLinkDisplayMode *mode;
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uint32_t format_code;
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HRESULT res;
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if (direction == DIRECTION_IN) {
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int ret;
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ret = decklink_select_input(avctx, bmdDeckLinkConfigAudioInputConnection);
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if (ret < 0)
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return ret;
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ret = decklink_select_input(avctx, bmdDeckLinkConfigVideoInputConnection);
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if (ret < 0)
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return ret;
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res = ctx->dli->GetDisplayModeIterator (&itermode);
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} else {
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res = ctx->dlo->GetDisplayModeIterator (&itermode);
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}
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if (res!= S_OK) {
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av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");
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return AVERROR(EIO);
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}
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av_log(avctx, AV_LOG_INFO, "Supported formats for '%s':\n\tformat_code\tdescription",
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avctx->filename);
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while (itermode->Next(&mode) == S_OK) {
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BMDTimeValue tb_num, tb_den;
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mode->GetFrameRate(&tb_num, &tb_den);
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format_code = av_bswap32(mode->GetDisplayMode());
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av_log(avctx, AV_LOG_INFO, "\n\t%.4s\t\t%ldx%ld at %d/%d fps",
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(char*) &format_code, mode->GetWidth(), mode->GetHeight(),
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(int) tb_den, (int) tb_num);
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switch (mode->GetFieldDominance()) {
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case bmdLowerFieldFirst:
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av_log(avctx, AV_LOG_INFO, " (interlaced, lower field first)"); break;
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case bmdUpperFieldFirst:
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av_log(avctx, AV_LOG_INFO, " (interlaced, upper field first)"); break;
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}
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mode->Release();
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}
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av_log(avctx, AV_LOG_INFO, "\n");
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itermode->Release();
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return 0;
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}
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void ff_decklink_cleanup(AVFormatContext *avctx)
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{
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struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
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struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
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if (ctx->dli)
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ctx->dli->Release();
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if (ctx->dlo)
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ctx->dlo->Release();
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if (ctx->attr)
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ctx->attr->Release();
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if (ctx->cfg)
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ctx->cfg->Release();
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if (ctx->dl)
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ctx->dl->Release();
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}
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int ff_decklink_init_device(AVFormatContext *avctx, const char* name)
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{
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struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
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struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
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IDeckLink *dl = NULL;
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IDeckLinkIterator *iter = CreateDeckLinkIteratorInstance();
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if (!iter) {
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av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n");
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return AVERROR_EXTERNAL;
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}
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while (iter->Next(&dl) == S_OK) {
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const char *displayName;
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ff_decklink_get_display_name(dl, &displayName);
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if (!strcmp(name, displayName)) {
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av_free((void *)displayName);
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ctx->dl = dl;
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break;
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}
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av_free((void *)displayName);
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dl->Release();
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}
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iter->Release();
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if (!ctx->dl)
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return AVERROR(ENXIO);
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if (ctx->dl->QueryInterface(IID_IDeckLinkConfiguration, (void **)&ctx->cfg) != S_OK) {
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av_log(avctx, AV_LOG_ERROR, "Could not get configuration interface for '%s'\n", name);
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ff_decklink_cleanup(avctx);
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return AVERROR_EXTERNAL;
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}
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if (ctx->dl->QueryInterface(IID_IDeckLinkAttributes, (void **)&ctx->attr) != S_OK) {
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av_log(avctx, AV_LOG_ERROR, "Could not get attributes interface for '%s'\n", name);
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ff_decklink_cleanup(avctx);
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return AVERROR_EXTERNAL;
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}
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return 0;
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}
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