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/* |
2 |
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* This file is part of FFmpeg. |
3 |
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* |
4 |
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* FFmpeg is free software; you can redistribute it and/or |
5 |
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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 |
7 |
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* version 2.1 of the License, or (at your option) any later version. |
8 |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
10 |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 |
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* Lesser General Public License for more details. |
13 |
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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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*/ |
18 |
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#include <string.h> |
20 |
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21 |
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#include "libavutil/avstring.h" |
22 |
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23 |
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#include "ffmpeg.h" |
24 |
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25 |
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static int nb_hw_devices; |
26 |
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static HWDevice **hw_devices; |
27 |
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28 |
|
1595 |
static HWDevice *hw_device_get_by_type(enum AVHWDeviceType type) |
29 |
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{ |
30 |
|
1595 |
HWDevice *found = NULL; |
31 |
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int i; |
32 |
✗✓ |
1595 |
for (i = 0; i < nb_hw_devices; i++) { |
33 |
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if (hw_devices[i]->type == type) { |
34 |
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if (found) |
35 |
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return NULL; |
36 |
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found = hw_devices[i]; |
37 |
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} |
38 |
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} |
39 |
|
1595 |
return found; |
40 |
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} |
41 |
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42 |
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HWDevice *hw_device_get_by_name(const char *name) |
43 |
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{ |
44 |
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int i; |
45 |
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for (i = 0; i < nb_hw_devices; i++) { |
46 |
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if (!strcmp(hw_devices[i]->name, name)) |
47 |
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return hw_devices[i]; |
48 |
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} |
49 |
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return NULL; |
50 |
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} |
51 |
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52 |
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static HWDevice *hw_device_add(void) |
53 |
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{ |
54 |
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int err; |
55 |
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err = av_reallocp_array(&hw_devices, nb_hw_devices + 1, |
56 |
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sizeof(*hw_devices)); |
57 |
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if (err) { |
58 |
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nb_hw_devices = 0; |
59 |
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return NULL; |
60 |
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} |
61 |
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hw_devices[nb_hw_devices] = av_mallocz(sizeof(HWDevice)); |
62 |
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if (!hw_devices[nb_hw_devices]) |
63 |
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return NULL; |
64 |
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return hw_devices[nb_hw_devices++]; |
65 |
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} |
66 |
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67 |
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static char *hw_device_default_name(enum AVHWDeviceType type) |
68 |
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{ |
69 |
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// Make an automatic name of the form "type%d". We arbitrarily |
70 |
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// limit at 1000 anonymous devices of the same type - there is |
71 |
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// probably something else very wrong if you get to this limit. |
72 |
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const char *type_name = av_hwdevice_get_type_name(type); |
73 |
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char *name; |
74 |
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size_t index_pos; |
75 |
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int index, index_limit = 1000; |
76 |
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index_pos = strlen(type_name); |
77 |
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name = av_malloc(index_pos + 4); |
78 |
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if (!name) |
79 |
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return NULL; |
80 |
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for (index = 0; index < index_limit; index++) { |
81 |
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snprintf(name, index_pos + 4, "%s%d", type_name, index); |
82 |
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if (!hw_device_get_by_name(name)) |
83 |
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break; |
84 |
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} |
85 |
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if (index >= index_limit) { |
86 |
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av_freep(&name); |
87 |
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return NULL; |
88 |
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} |
89 |
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return name; |
90 |
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} |
91 |
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92 |
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int hw_device_init_from_string(const char *arg, HWDevice **dev_out) |
93 |
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{ |
94 |
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// "type=name:device,key=value,key2=value2" |
95 |
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// "type:device,key=value,key2=value2" |
96 |
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// -> av_hwdevice_ctx_create() |
97 |
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// "type=name@name" |
98 |
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// "type@name" |
99 |
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// -> av_hwdevice_ctx_create_derived() |
100 |
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101 |
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AVDictionary *options = NULL; |
102 |
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const char *type_name = NULL, *name = NULL, *device = NULL; |
103 |
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enum AVHWDeviceType type; |
104 |
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HWDevice *dev, *src; |
105 |
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AVBufferRef *device_ref = NULL; |
106 |
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int err; |
107 |
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const char *errmsg, *p, *q; |
108 |
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size_t k; |
109 |
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110 |
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k = strcspn(arg, ":=@"); |
111 |
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p = arg + k; |
112 |
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113 |
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type_name = av_strndup(arg, k); |
114 |
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if (!type_name) { |
115 |
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err = AVERROR(ENOMEM); |
116 |
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goto fail; |
117 |
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} |
118 |
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type = av_hwdevice_find_type_by_name(type_name); |
119 |
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if (type == AV_HWDEVICE_TYPE_NONE) { |
120 |
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errmsg = "unknown device type"; |
121 |
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goto invalid; |
122 |
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} |
123 |
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124 |
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if (*p == '=') { |
125 |
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k = strcspn(p + 1, ":@"); |
126 |
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127 |
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name = av_strndup(p + 1, k); |
128 |
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if (!name) { |
129 |
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err = AVERROR(ENOMEM); |
130 |
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goto fail; |
131 |
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} |
132 |
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if (hw_device_get_by_name(name)) { |
133 |
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errmsg = "named device already exists"; |
134 |
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goto invalid; |
135 |
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} |
136 |
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137 |
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p += 1 + k; |
138 |
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} else { |
139 |
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name = hw_device_default_name(type); |
140 |
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if (!name) { |
141 |
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err = AVERROR(ENOMEM); |
142 |
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goto fail; |
143 |
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} |
144 |
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} |
145 |
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146 |
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if (!*p) { |
147 |
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// New device with no parameters. |
148 |
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err = av_hwdevice_ctx_create(&device_ref, type, |
149 |
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NULL, NULL, 0); |
150 |
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if (err < 0) |
151 |
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goto fail; |
152 |
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153 |
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} else if (*p == ':') { |
154 |
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// New device with some parameters. |
155 |
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++p; |
156 |
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q = strchr(p, ','); |
157 |
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if (q) { |
158 |
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if (q - p > 0) { |
159 |
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device = av_strndup(p, q - p); |
160 |
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if (!device) { |
161 |
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err = AVERROR(ENOMEM); |
162 |
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goto fail; |
163 |
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} |
164 |
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} |
165 |
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err = av_dict_parse_string(&options, q + 1, "=", ",", 0); |
166 |
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if (err < 0) { |
167 |
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errmsg = "failed to parse options"; |
168 |
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goto invalid; |
169 |
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} |
170 |
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} |
171 |
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172 |
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err = av_hwdevice_ctx_create(&device_ref, type, |
173 |
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q ? device : p[0] ? p : NULL, |
174 |
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options, 0); |
175 |
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if (err < 0) |
176 |
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goto fail; |
177 |
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178 |
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} else if (*p == '@') { |
179 |
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// Derive from existing device. |
180 |
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181 |
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src = hw_device_get_by_name(p + 1); |
182 |
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if (!src) { |
183 |
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errmsg = "invalid source device name"; |
184 |
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goto invalid; |
185 |
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} |
186 |
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187 |
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err = av_hwdevice_ctx_create_derived(&device_ref, type, |
188 |
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src->device_ref, 0); |
189 |
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if (err < 0) |
190 |
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goto fail; |
191 |
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} else { |
192 |
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errmsg = "parse error"; |
193 |
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goto invalid; |
194 |
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} |
195 |
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196 |
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dev = hw_device_add(); |
197 |
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if (!dev) { |
198 |
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err = AVERROR(ENOMEM); |
199 |
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goto fail; |
200 |
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} |
201 |
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202 |
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dev->name = name; |
203 |
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dev->type = type; |
204 |
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dev->device_ref = device_ref; |
205 |
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206 |
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if (dev_out) |
207 |
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*dev_out = dev; |
208 |
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209 |
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name = NULL; |
210 |
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err = 0; |
211 |
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done: |
212 |
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av_freep(&type_name); |
213 |
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av_freep(&name); |
214 |
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av_freep(&device); |
215 |
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av_dict_free(&options); |
216 |
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return err; |
217 |
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invalid: |
218 |
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av_log(NULL, AV_LOG_ERROR, |
219 |
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"Invalid device specification \"%s\": %s\n", arg, errmsg); |
220 |
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err = AVERROR(EINVAL); |
221 |
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goto done; |
222 |
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fail: |
223 |
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av_log(NULL, AV_LOG_ERROR, |
224 |
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"Device creation failed: %d.\n", err); |
225 |
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av_buffer_unref(&device_ref); |
226 |
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goto done; |
227 |
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} |
228 |
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229 |
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static int hw_device_init_from_type(enum AVHWDeviceType type, |
230 |
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const char *device, |
231 |
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HWDevice **dev_out) |
232 |
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{ |
233 |
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AVBufferRef *device_ref = NULL; |
234 |
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HWDevice *dev; |
235 |
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char *name; |
236 |
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int err; |
237 |
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|
238 |
|
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name = hw_device_default_name(type); |
239 |
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if (!name) { |
240 |
|
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err = AVERROR(ENOMEM); |
241 |
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goto fail; |
242 |
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} |
243 |
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|
244 |
|
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err = av_hwdevice_ctx_create(&device_ref, type, device, NULL, 0); |
245 |
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if (err < 0) { |
246 |
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av_log(NULL, AV_LOG_ERROR, |
247 |
|
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"Device creation failed: %d.\n", err); |
248 |
|
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goto fail; |
249 |
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} |
250 |
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251 |
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dev = hw_device_add(); |
252 |
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if (!dev) { |
253 |
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err = AVERROR(ENOMEM); |
254 |
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goto fail; |
255 |
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} |
256 |
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|
257 |
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dev->name = name; |
258 |
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dev->type = type; |
259 |
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dev->device_ref = device_ref; |
260 |
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|
261 |
|
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if (dev_out) |
262 |
|
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*dev_out = dev; |
263 |
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|
264 |
|
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return 0; |
265 |
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|
266 |
|
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fail: |
267 |
|
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av_freep(&name); |
268 |
|
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av_buffer_unref(&device_ref); |
269 |
|
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return err; |
270 |
|
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} |
271 |
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|
272 |
|
5859 |
void hw_device_free_all(void) |
273 |
|
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{ |
274 |
|
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int i; |
275 |
✗✓ |
5859 |
for (i = 0; i < nb_hw_devices; i++) { |
276 |
|
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av_freep(&hw_devices[i]->name); |
277 |
|
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av_buffer_unref(&hw_devices[i]->device_ref); |
278 |
|
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av_freep(&hw_devices[i]); |
279 |
|
|
} |
280 |
|
5859 |
av_freep(&hw_devices); |
281 |
|
5859 |
nb_hw_devices = 0; |
282 |
|
5859 |
} |
283 |
|
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|
284 |
|
11405 |
static HWDevice *hw_device_match_by_codec(const AVCodec *codec) |
285 |
|
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{ |
286 |
|
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const AVCodecHWConfig *config; |
287 |
|
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HWDevice *dev; |
288 |
|
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int i; |
289 |
|
11405 |
for (i = 0;; i++) { |
290 |
|
13000 |
config = avcodec_get_hw_config(codec, i); |
291 |
✓✓ |
13000 |
if (!config) |
292 |
|
11405 |
return NULL; |
293 |
✗✓ |
1595 |
if (!(config->methods & AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX)) |
294 |
|
|
continue; |
295 |
|
1595 |
dev = hw_device_get_by_type(config->device_type); |
296 |
✗✓ |
1595 |
if (dev) |
297 |
|
|
return dev; |
298 |
|
|
} |
299 |
|
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} |
300 |
|
|
|
301 |
|
5692 |
int hw_device_setup_for_decode(InputStream *ist) |
302 |
|
|
{ |
303 |
|
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const AVCodecHWConfig *config; |
304 |
|
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enum AVHWDeviceType type; |
305 |
|
5692 |
HWDevice *dev = NULL; |
306 |
|
5692 |
int err, auto_device = 0; |
307 |
|
|
|
308 |
✗✓ |
5692 |
if (ist->hwaccel_device) { |
309 |
|
|
dev = hw_device_get_by_name(ist->hwaccel_device); |
310 |
|
|
if (!dev) { |
311 |
|
|
if (ist->hwaccel_id == HWACCEL_AUTO) { |
312 |
|
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auto_device = 1; |
313 |
|
|
} else if (ist->hwaccel_id == HWACCEL_GENERIC) { |
314 |
|
|
type = ist->hwaccel_device_type; |
315 |
|
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err = hw_device_init_from_type(type, ist->hwaccel_device, |
316 |
|
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&dev); |
317 |
|
|
} else { |
318 |
|
|
// This will be dealt with by API-specific initialisation |
319 |
|
|
// (using hwaccel_device), so nothing further needed here. |
320 |
|
|
return 0; |
321 |
|
|
} |
322 |
|
|
} else { |
323 |
|
|
if (ist->hwaccel_id == HWACCEL_AUTO) { |
324 |
|
|
ist->hwaccel_device_type = dev->type; |
325 |
|
|
} else if (ist->hwaccel_device_type != dev->type) { |
326 |
|
|
av_log(ist->dec_ctx, AV_LOG_ERROR, "Invalid hwaccel device " |
327 |
|
|
"specified for decoder: device %s of type %s is not " |
328 |
|
|
"usable with hwaccel %s.\n", dev->name, |
329 |
|
|
av_hwdevice_get_type_name(dev->type), |
330 |
|
|
av_hwdevice_get_type_name(ist->hwaccel_device_type)); |
331 |
|
|
return AVERROR(EINVAL); |
332 |
|
|
} |
333 |
|
|
} |
334 |
|
|
} else { |
335 |
✗✓ |
5692 |
if (ist->hwaccel_id == HWACCEL_AUTO) { |
336 |
|
|
auto_device = 1; |
337 |
✗✓ |
5692 |
} else if (ist->hwaccel_id == HWACCEL_GENERIC) { |
338 |
|
|
type = ist->hwaccel_device_type; |
339 |
|
|
dev = hw_device_get_by_type(type); |
340 |
|
|
if (!dev) |
341 |
|
|
err = hw_device_init_from_type(type, NULL, &dev); |
342 |
|
|
} else { |
343 |
|
5692 |
dev = hw_device_match_by_codec(ist->dec); |
344 |
✓✗ |
5692 |
if (!dev) { |
345 |
|
|
// No device for this codec, but not using generic hwaccel |
346 |
|
|
// and therefore may well not need one - ignore. |
347 |
|
5692 |
return 0; |
348 |
|
|
} |
349 |
|
|
} |
350 |
|
|
} |
351 |
|
|
|
352 |
|
|
if (auto_device) { |
353 |
|
|
int i; |
354 |
|
|
if (!avcodec_get_hw_config(ist->dec, 0)) { |
355 |
|
|
// Decoder does not support any hardware devices. |
356 |
|
|
return 0; |
357 |
|
|
} |
358 |
|
|
for (i = 0; !dev; i++) { |
359 |
|
|
config = avcodec_get_hw_config(ist->dec, i); |
360 |
|
|
if (!config) |
361 |
|
|
break; |
362 |
|
|
type = config->device_type; |
363 |
|
|
dev = hw_device_get_by_type(type); |
364 |
|
|
if (dev) { |
365 |
|
|
av_log(ist->dec_ctx, AV_LOG_INFO, "Using auto " |
366 |
|
|
"hwaccel type %s with existing device %s.\n", |
367 |
|
|
av_hwdevice_get_type_name(type), dev->name); |
368 |
|
|
} |
369 |
|
|
} |
370 |
|
|
for (i = 0; !dev; i++) { |
371 |
|
|
config = avcodec_get_hw_config(ist->dec, i); |
372 |
|
|
if (!config) |
373 |
|
|
break; |
374 |
|
|
type = config->device_type; |
375 |
|
|
// Try to make a new device of this type. |
376 |
|
|
err = hw_device_init_from_type(type, ist->hwaccel_device, |
377 |
|
|
&dev); |
378 |
|
|
if (err < 0) { |
379 |
|
|
// Can't make a device of this type. |
380 |
|
|
continue; |
381 |
|
|
} |
382 |
|
|
if (ist->hwaccel_device) { |
383 |
|
|
av_log(ist->dec_ctx, AV_LOG_INFO, "Using auto " |
384 |
|
|
"hwaccel type %s with new device created " |
385 |
|
|
"from %s.\n", av_hwdevice_get_type_name(type), |
386 |
|
|
ist->hwaccel_device); |
387 |
|
|
} else { |
388 |
|
|
av_log(ist->dec_ctx, AV_LOG_INFO, "Using auto " |
389 |
|
|
"hwaccel type %s with new default device.\n", |
390 |
|
|
av_hwdevice_get_type_name(type)); |
391 |
|
|
} |
392 |
|
|
} |
393 |
|
|
if (dev) { |
394 |
|
|
ist->hwaccel_device_type = type; |
395 |
|
|
} else { |
396 |
|
|
av_log(ist->dec_ctx, AV_LOG_INFO, "Auto hwaccel " |
397 |
|
|
"disabled: no device found.\n"); |
398 |
|
|
ist->hwaccel_id = HWACCEL_NONE; |
399 |
|
|
return 0; |
400 |
|
|
} |
401 |
|
|
} |
402 |
|
|
|
403 |
|
|
if (!dev) { |
404 |
|
|
av_log(ist->dec_ctx, AV_LOG_ERROR, "No device available " |
405 |
|
|
"for decoder: device type %s needed for codec %s.\n", |
406 |
|
|
av_hwdevice_get_type_name(type), ist->dec->name); |
407 |
|
|
return err; |
408 |
|
|
} |
409 |
|
|
|
410 |
|
|
ist->dec_ctx->hw_device_ctx = av_buffer_ref(dev->device_ref); |
411 |
|
|
if (!ist->dec_ctx->hw_device_ctx) |
412 |
|
|
return AVERROR(ENOMEM); |
413 |
|
|
|
414 |
|
|
return 0; |
415 |
|
|
} |
416 |
|
|
|
417 |
|
5713 |
int hw_device_setup_for_encode(OutputStream *ost) |
418 |
|
|
{ |
419 |
|
|
HWDevice *dev; |
420 |
|
|
|
421 |
|
5713 |
dev = hw_device_match_by_codec(ost->enc); |
422 |
✗✓ |
5713 |
if (dev) { |
423 |
|
|
ost->enc_ctx->hw_device_ctx = av_buffer_ref(dev->device_ref); |
424 |
|
|
if (!ost->enc_ctx->hw_device_ctx) |
425 |
|
|
return AVERROR(ENOMEM); |
426 |
|
|
return 0; |
427 |
|
|
} else { |
428 |
|
|
// No device required, or no device available. |
429 |
|
5713 |
return 0; |
430 |
|
|
} |
431 |
|
|
} |
432 |
|
|
|
433 |
|
|
static int hwaccel_retrieve_data(AVCodecContext *avctx, AVFrame *input) |
434 |
|
|
{ |
435 |
|
|
InputStream *ist = avctx->opaque; |
436 |
|
|
AVFrame *output = NULL; |
437 |
|
|
enum AVPixelFormat output_format = ist->hwaccel_output_format; |
438 |
|
|
int err; |
439 |
|
|
|
440 |
|
|
if (input->format == output_format) { |
441 |
|
|
// Nothing to do. |
442 |
|
|
return 0; |
443 |
|
|
} |
444 |
|
|
|
445 |
|
|
output = av_frame_alloc(); |
446 |
|
|
if (!output) |
447 |
|
|
return AVERROR(ENOMEM); |
448 |
|
|
|
449 |
|
|
output->format = output_format; |
450 |
|
|
|
451 |
|
|
err = av_hwframe_transfer_data(output, input, 0); |
452 |
|
|
if (err < 0) { |
453 |
|
|
av_log(avctx, AV_LOG_ERROR, "Failed to transfer data to " |
454 |
|
|
"output frame: %d.\n", err); |
455 |
|
|
goto fail; |
456 |
|
|
} |
457 |
|
|
|
458 |
|
|
err = av_frame_copy_props(output, input); |
459 |
|
|
if (err < 0) { |
460 |
|
|
av_frame_unref(output); |
461 |
|
|
goto fail; |
462 |
|
|
} |
463 |
|
|
|
464 |
|
|
av_frame_unref(input); |
465 |
|
|
av_frame_move_ref(input, output); |
466 |
|
|
av_frame_free(&output); |
467 |
|
|
|
468 |
|
|
return 0; |
469 |
|
|
|
470 |
|
|
fail: |
471 |
|
|
av_frame_free(&output); |
472 |
|
|
return err; |
473 |
|
|
} |
474 |
|
|
|
475 |
|
|
int hwaccel_decode_init(AVCodecContext *avctx) |
476 |
|
|
{ |
477 |
|
|
InputStream *ist = avctx->opaque; |
478 |
|
|
|
479 |
|
|
ist->hwaccel_retrieve_data = &hwaccel_retrieve_data; |
480 |
|
|
|
481 |
|
|
return 0; |
482 |
|
|
} |