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path: root/libavdevice/decklink_common.cpp (plain)
blob: c9107c036a59c717f67abcb448e0e4e27b8f97f0
1/*
2 * Blackmagic DeckLink output
3 * Copyright (c) 2013-2014 Ramiro Polla, Luca Barbato, Deti Fliegl
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#else
26#include <DeckLinkAPIDispatch.cpp>
27#endif
28
29#include <pthread.h>
30#include <semaphore.h>
31
32extern "C" {
33#include "libavformat/avformat.h"
34#include "libavformat/internal.h"
35#include "libavutil/imgutils.h"
36#include "libavutil/intreadwrite.h"
37#include "libavutil/bswap.h"
38}
39
40#include "decklink_common.h"
41
42#ifdef _WIN32
43IDeckLinkIterator *CreateDeckLinkIteratorInstance(void)
44{
45 IDeckLinkIterator *iter;
46
47 if (CoInitialize(NULL) < 0) {
48 av_log(NULL, AV_LOG_ERROR, "COM initialization failed.\n");
49 return NULL;
50 }
51
52 if (CoCreateInstance(CLSID_CDeckLinkIterator, NULL, CLSCTX_ALL,
53 IID_IDeckLinkIterator, (void**) &iter) != S_OK) {
54 av_log(NULL, AV_LOG_ERROR, "DeckLink drivers not installed.\n");
55 return NULL;
56 }
57
58 return iter;
59}
60#endif
61
62#ifdef _WIN32
63static char *dup_wchar_to_utf8(wchar_t *w)
64{
65 char *s = NULL;
66 int l = WideCharToMultiByte(CP_UTF8, 0, w, -1, 0, 0, 0, 0);
67 s = (char *) av_malloc(l);
68 if (s)
69 WideCharToMultiByte(CP_UTF8, 0, w, -1, s, l, 0, 0);
70 return s;
71}
72#define DECKLINK_STR OLECHAR *
73#define DECKLINK_STRDUP dup_wchar_to_utf8
74#define DECKLINK_FREE(s) SysFreeString(s)
75#define DECKLINK_BOOL BOOL
76#elif defined(__APPLE__)
77static char *dup_cfstring_to_utf8(CFStringRef w)
78{
79 char s[256];
80 CFStringGetCString(w, s, 255, kCFStringEncodingUTF8);
81 return av_strdup(s);
82}
83#define DECKLINK_STR const __CFString *
84#define DECKLINK_STRDUP dup_cfstring_to_utf8
85#define DECKLINK_FREE(s) free((void *) s)
86#define DECKLINK_BOOL bool
87#else
88#define DECKLINK_STR const char *
89#define DECKLINK_STRDUP av_strdup
90/* free() is needed for a string returned by the DeckLink SDL. */
91#define DECKLINK_FREE(s) free((void *) s)
92#define DECKLINK_BOOL bool
93#endif
94
95HRESULT ff_decklink_get_display_name(IDeckLink *This, const char **displayName)
96{
97 DECKLINK_STR tmpDisplayName;
98 HRESULT hr = This->GetDisplayName(&tmpDisplayName);
99 if (hr != S_OK)
100 return hr;
101 *displayName = DECKLINK_STRDUP(tmpDisplayName);
102 DECKLINK_FREE(tmpDisplayName);
103 return hr;
104}
105
106static int decklink_select_input(AVFormatContext *avctx, BMDDeckLinkConfigurationID cfg_id)
107{
108 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
109 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
110 BMDDeckLinkAttributeID attr_id = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? BMDDeckLinkAudioInputConnections : BMDDeckLinkVideoInputConnections;
111 int64_t bmd_input = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? (int64_t)ctx->audio_input : (int64_t)ctx->video_input;
112 const char *type_name = (cfg_id == bmdDeckLinkConfigAudioInputConnection) ? "audio" : "video";
113 int64_t supported_connections = 0;
114 HRESULT res;
115
116 if (bmd_input) {
117 res = ctx->attr->GetInt(attr_id, &supported_connections);
118 if (res != S_OK) {
119 av_log(avctx, AV_LOG_ERROR, "Failed to query supported %s inputs.\n", type_name);
120 return AVERROR_EXTERNAL;
121 }
122 if ((supported_connections & bmd_input) != bmd_input) {
123 av_log(avctx, AV_LOG_ERROR, "Device does not support selected %s input.\n", type_name);
124 return AVERROR(ENOSYS);
125 }
126 res = ctx->cfg->SetInt(cfg_id, bmd_input);
127 if (res != S_OK) {
128 av_log(avctx, AV_LOG_ERROR, "Failed to select %s input.\n", type_name);
129 return AVERROR_EXTERNAL;
130 }
131 }
132 return 0;
133}
134
135static DECKLINK_BOOL field_order_eq(enum AVFieldOrder field_order, BMDFieldDominance bmd_field_order)
136{
137 if (field_order == AV_FIELD_UNKNOWN)
138 return true;
139 if ((field_order == AV_FIELD_TT || field_order == AV_FIELD_TB) && bmd_field_order == bmdUpperFieldFirst)
140 return true;
141 if ((field_order == AV_FIELD_BB || field_order == AV_FIELD_BT) && bmd_field_order == bmdLowerFieldFirst)
142 return true;
143 if (field_order == AV_FIELD_PROGRESSIVE && (bmd_field_order == bmdProgressiveFrame || bmd_field_order == bmdProgressiveSegmentedFrame))
144 return true;
145 return false;
146}
147
148int ff_decklink_set_format(AVFormatContext *avctx,
149 int width, int height,
150 int tb_num, int tb_den,
151 enum AVFieldOrder field_order,
152 decklink_direction_t direction, int num)
153{
154 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
155 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
156 BMDDisplayModeSupport support;
157 IDeckLinkDisplayModeIterator *itermode;
158 IDeckLinkDisplayMode *mode;
159 int i = 1;
160 HRESULT res;
161
162 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",
163 width, height, tb_num, tb_den, field_order, direction, num, (cctx->format_code) ? cctx->format_code : "(unset)");
164
165 if (ctx->duplex_mode) {
166 DECKLINK_BOOL duplex_supported = false;
167
168 if (ctx->attr->GetFlag(BMDDeckLinkSupportsDuplexModeConfiguration, &duplex_supported) != S_OK)
169 duplex_supported = false;
170
171 if (duplex_supported) {
172 res = ctx->cfg->SetInt(bmdDeckLinkConfigDuplexMode, ctx->duplex_mode == 2 ? bmdDuplexModeFull : bmdDuplexModeHalf);
173 if (res != S_OK)
174 av_log(avctx, AV_LOG_WARNING, "Setting duplex mode failed.\n");
175 else
176 av_log(avctx, AV_LOG_VERBOSE, "Successfully set duplex mode to %s duplex.\n", ctx->duplex_mode == 2 ? "full" : "half");
177 } else {
178 av_log(avctx, AV_LOG_WARNING, "Unable to set duplex mode, because it is not supported.\n");
179 }
180 }
181
182 if (direction == DIRECTION_IN) {
183 int ret;
184 ret = decklink_select_input(avctx, bmdDeckLinkConfigAudioInputConnection);
185 if (ret < 0)
186 return ret;
187 ret = decklink_select_input(avctx, bmdDeckLinkConfigVideoInputConnection);
188 if (ret < 0)
189 return ret;
190 res = ctx->dli->GetDisplayModeIterator (&itermode);
191 } else {
192 res = ctx->dlo->GetDisplayModeIterator (&itermode);
193 }
194
195 if (res!= S_OK) {
196 av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");
197 return AVERROR(EIO);
198 }
199
200 char format_buf[] = " ";
201 if (cctx->format_code)
202 memcpy(format_buf, cctx->format_code, FFMIN(strlen(cctx->format_code), sizeof(format_buf)));
203 BMDDisplayMode target_mode = (BMDDisplayMode)AV_RB32(format_buf);
204 AVRational target_tb = av_make_q(tb_num, tb_den);
205 ctx->bmd_mode = bmdModeUnknown;
206 while ((ctx->bmd_mode == bmdModeUnknown) && itermode->Next(&mode) == S_OK) {
207 BMDTimeValue bmd_tb_num, bmd_tb_den;
208 int bmd_width = mode->GetWidth();
209 int bmd_height = mode->GetHeight();
210 BMDDisplayMode bmd_mode = mode->GetDisplayMode();
211 BMDFieldDominance bmd_field_dominance = mode->GetFieldDominance();
212
213 mode->GetFrameRate(&bmd_tb_num, &bmd_tb_den);
214 AVRational mode_tb = av_make_q(bmd_tb_num, bmd_tb_den);
215
216 if ((bmd_width == width &&
217 bmd_height == height &&
218 !av_cmp_q(mode_tb, target_tb) &&
219 field_order_eq(field_order, bmd_field_dominance))
220 || i == num
221 || target_mode == bmd_mode) {
222 ctx->bmd_mode = bmd_mode;
223 ctx->bmd_width = bmd_width;
224 ctx->bmd_height = bmd_height;
225 ctx->bmd_tb_den = bmd_tb_den;
226 ctx->bmd_tb_num = bmd_tb_num;
227 ctx->bmd_field_dominance = bmd_field_dominance;
228 av_log(avctx, AV_LOG_INFO, "Found Decklink mode %d x %d with rate %.2f%s\n",
229 bmd_width, bmd_height, 1/av_q2d(mode_tb),
230 (ctx->bmd_field_dominance==bmdLowerFieldFirst || ctx->bmd_field_dominance==bmdUpperFieldFirst)?"(i)":"");
231 }
232
233 mode->Release();
234 i++;
235 }
236
237 itermode->Release();
238
239 if (ctx->bmd_mode == bmdModeUnknown)
240 return -1;
241 if (direction == DIRECTION_IN) {
242 if (ctx->dli->DoesSupportVideoMode(ctx->bmd_mode, bmdFormat8BitYUV,
243 bmdVideoOutputFlagDefault,
244 &support, NULL) != S_OK)
245 return -1;
246 } else {
247 if (ctx->dlo->DoesSupportVideoMode(ctx->bmd_mode, bmdFormat8BitYUV,
248 bmdVideoOutputFlagDefault,
249 &support, NULL) != S_OK)
250 return -1;
251 }
252 if (support == bmdDisplayModeSupported)
253 return 0;
254
255 return -1;
256}
257
258int ff_decklink_set_format(AVFormatContext *avctx, decklink_direction_t direction, int num) {
259 return ff_decklink_set_format(avctx, 0, 0, 0, 0, AV_FIELD_UNKNOWN, direction, num);
260}
261
262int ff_decklink_list_devices(AVFormatContext *avctx)
263{
264 IDeckLink *dl = NULL;
265 IDeckLinkIterator *iter = CreateDeckLinkIteratorInstance();
266 if (!iter) {
267 av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n");
268 return AVERROR(EIO);
269 }
270 av_log(avctx, AV_LOG_INFO, "Blackmagic DeckLink devices:\n");
271 while (iter->Next(&dl) == S_OK) {
272 const char *displayName;
273 ff_decklink_get_display_name(dl, &displayName);
274 av_log(avctx, AV_LOG_INFO, "\t'%s'\n", displayName);
275 av_free((void *) displayName);
276 dl->Release();
277 }
278 iter->Release();
279 return 0;
280}
281
282int ff_decklink_list_formats(AVFormatContext *avctx, decklink_direction_t direction)
283{
284 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
285 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
286 IDeckLinkDisplayModeIterator *itermode;
287 IDeckLinkDisplayMode *mode;
288 uint32_t format_code;
289 HRESULT res;
290
291 if (direction == DIRECTION_IN) {
292 int ret;
293 ret = decklink_select_input(avctx, bmdDeckLinkConfigAudioInputConnection);
294 if (ret < 0)
295 return ret;
296 ret = decklink_select_input(avctx, bmdDeckLinkConfigVideoInputConnection);
297 if (ret < 0)
298 return ret;
299 res = ctx->dli->GetDisplayModeIterator (&itermode);
300 } else {
301 res = ctx->dlo->GetDisplayModeIterator (&itermode);
302 }
303
304 if (res!= S_OK) {
305 av_log(avctx, AV_LOG_ERROR, "Could not get Display Mode Iterator\n");
306 return AVERROR(EIO);
307 }
308
309 av_log(avctx, AV_LOG_INFO, "Supported formats for '%s':\n\tformat_code\tdescription",
310 avctx->filename);
311 while (itermode->Next(&mode) == S_OK) {
312 BMDTimeValue tb_num, tb_den;
313 mode->GetFrameRate(&tb_num, &tb_den);
314 format_code = av_bswap32(mode->GetDisplayMode());
315 av_log(avctx, AV_LOG_INFO, "\n\t%.4s\t\t%ldx%ld at %d/%d fps",
316 (char*) &format_code, mode->GetWidth(), mode->GetHeight(),
317 (int) tb_den, (int) tb_num);
318 switch (mode->GetFieldDominance()) {
319 case bmdLowerFieldFirst:
320 av_log(avctx, AV_LOG_INFO, " (interlaced, lower field first)"); break;
321 case bmdUpperFieldFirst:
322 av_log(avctx, AV_LOG_INFO, " (interlaced, upper field first)"); break;
323 }
324 mode->Release();
325 }
326 av_log(avctx, AV_LOG_INFO, "\n");
327
328 itermode->Release();
329
330 return 0;
331}
332
333void ff_decklink_cleanup(AVFormatContext *avctx)
334{
335 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
336 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
337
338 if (ctx->dli)
339 ctx->dli->Release();
340 if (ctx->dlo)
341 ctx->dlo->Release();
342 if (ctx->attr)
343 ctx->attr->Release();
344 if (ctx->cfg)
345 ctx->cfg->Release();
346 if (ctx->dl)
347 ctx->dl->Release();
348}
349
350int ff_decklink_init_device(AVFormatContext *avctx, const char* name)
351{
352 struct decklink_cctx *cctx = (struct decklink_cctx *)avctx->priv_data;
353 struct decklink_ctx *ctx = (struct decklink_ctx *)cctx->ctx;
354 IDeckLink *dl = NULL;
355 IDeckLinkIterator *iter = CreateDeckLinkIteratorInstance();
356 if (!iter) {
357 av_log(avctx, AV_LOG_ERROR, "Could not create DeckLink iterator\n");
358 return AVERROR_EXTERNAL;
359 }
360
361 while (iter->Next(&dl) == S_OK) {
362 const char *displayName;
363 ff_decklink_get_display_name(dl, &displayName);
364 if (!strcmp(name, displayName)) {
365 av_free((void *)displayName);
366 ctx->dl = dl;
367 break;
368 }
369 av_free((void *)displayName);
370 dl->Release();
371 }
372 iter->Release();
373 if (!ctx->dl)
374 return AVERROR(ENXIO);
375
376 if (ctx->dl->QueryInterface(IID_IDeckLinkConfiguration, (void **)&ctx->cfg) != S_OK) {
377 av_log(avctx, AV_LOG_ERROR, "Could not get configuration interface for '%s'\n", name);
378 ff_decklink_cleanup(avctx);
379 return AVERROR_EXTERNAL;
380 }
381
382 if (ctx->dl->QueryInterface(IID_IDeckLinkAttributes, (void **)&ctx->attr) != S_OK) {
383 av_log(avctx, AV_LOG_ERROR, "Could not get attributes interface for '%s'\n", name);
384 ff_decklink_cleanup(avctx);
385 return AVERROR_EXTERNAL;
386 }
387
388 return 0;
389}
390
generated by cgit at 2024-05-17 06:34:01 (GMT)