1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
/*
* 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 <DeckLinkAPI.h>
#ifdef _WIN32
#include <DeckLinkAPI_i.c>
#else
#include <DeckLinkAPIDispatch.cpp>
#endif
#include <pthread.h>
#include <semaphore.h>
extern "C" {
#include "libavformat/avformat.h"
#include "libavformat/internal.h"
#include "libavutil/imgutils.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)
#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)
#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;
}
int ff_decklink_set_format(AVFormatContext *avctx,
int width, int height,
int tb_num, int tb_den,
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;
if (direction == DIRECTION_IN) {
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);
}
if (tb_num == 1) {
tb_num *= 1000;
tb_den *= 1000;
}
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();
mode->GetFrameRate(&bmd_tb_num, &bmd_tb_den);
if ((bmd_width == width && bmd_height == height &&
bmd_tb_num == tb_num && bmd_tb_den == tb_den) || i == num) {
ctx->bmd_mode = mode->GetDisplayMode();
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 = mode->GetFieldDominance();
av_log(avctx, AV_LOG_INFO, "Found Decklink mode %d x %d with rate %.2f%s\n",
bmd_width, bmd_height, (float)bmd_tb_den/(float)bmd_tb_num,
(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, bmdFormat8BitYUV,
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, direction, num);
}
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_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;
int i=0;
HRESULT res;
if (direction == DIRECTION_IN) {
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",
avctx->filename);
while (itermode->Next(&mode) == S_OK) {
BMDTimeValue tb_num, tb_den;
mode->GetFrameRate(&tb_num, &tb_den);
av_log(avctx, AV_LOG_INFO, "\t%d\t%ldx%ld at %d/%d fps",
++i,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;
}
av_log(avctx, AV_LOG_INFO, "\n");
mode->Release();
}
itermode->Release();
return 0;
}
|
