| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * This file is part of FFmpeg. | ||
| 3 | * | ||
| 4 | * FFmpeg is free software; you can redistribute it and/or | ||
| 5 | * modify it under the terms of the GNU Lesser General Public | ||
| 6 | * License as published by the Free Software Foundation; either | ||
| 7 | * version 2.1 of the License, or (at your option) any later version. | ||
| 8 | * | ||
| 9 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 12 | * Lesser General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU Lesser General Public | ||
| 15 | * License along with FFmpeg; if not, write to the Free Software | ||
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 17 | */ | ||
| 18 | |||
| 19 | #include <string.h> | ||
| 20 | |||
| 21 | #include "libavutil/mem.h" | ||
| 22 | |||
| 23 | #include "ffmpeg.h" | ||
| 24 | |||
| 25 | static int nb_hw_devices; | ||
| 26 | static HWDevice **hw_devices; | ||
| 27 | |||
| 28 | 1712 | HWDevice *hw_device_get_by_type(enum AVHWDeviceType type) | |
| 29 | { | ||
| 30 | 1712 | HWDevice *found = NULL; | |
| 31 | int i; | ||
| 32 |
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1712 | for (i = 0; i < nb_hw_devices; i++) { |
| 33 | ✗ | if (hw_devices[i]->type == type) { | |
| 34 | ✗ | if (found) | |
| 35 | ✗ | return NULL; | |
| 36 | ✗ | found = hw_devices[i]; | |
| 37 | } | ||
| 38 | } | ||
| 39 | 1712 | return found; | |
| 40 | } | ||
| 41 | |||
| 42 | ✗ | HWDevice *hw_device_get_by_name(const char *name) | |
| 43 | { | ||
| 44 | int i; | ||
| 45 | ✗ | for (i = 0; i < nb_hw_devices; i++) { | |
| 46 | ✗ | if (!strcmp(hw_devices[i]->name, name)) | |
| 47 | ✗ | return hw_devices[i]; | |
| 48 | } | ||
| 49 | ✗ | return NULL; | |
| 50 | } | ||
| 51 | |||
| 52 | ✗ | static HWDevice *hw_device_add(void) | |
| 53 | { | ||
| 54 | int err; | ||
| 55 | ✗ | err = av_reallocp_array(&hw_devices, nb_hw_devices + 1, | |
| 56 | sizeof(*hw_devices)); | ||
| 57 | ✗ | if (err) { | |
| 58 | ✗ | nb_hw_devices = 0; | |
| 59 | ✗ | return NULL; | |
| 60 | } | ||
| 61 | ✗ | hw_devices[nb_hw_devices] = av_mallocz(sizeof(HWDevice)); | |
| 62 | ✗ | if (!hw_devices[nb_hw_devices]) | |
| 63 | ✗ | return NULL; | |
| 64 | ✗ | return hw_devices[nb_hw_devices++]; | |
| 65 | } | ||
| 66 | |||
| 67 | ✗ | static char *hw_device_default_name(enum AVHWDeviceType type) | |
| 68 | { | ||
| 69 | // Make an automatic name of the form "type%d". We arbitrarily | ||
| 70 | // limit at 1000 anonymous devices of the same type - there is | ||
| 71 | // probably something else very wrong if you get to this limit. | ||
| 72 | ✗ | const char *type_name = av_hwdevice_get_type_name(type); | |
| 73 | char *name; | ||
| 74 | size_t index_pos; | ||
| 75 | ✗ | int index, index_limit = 1000; | |
| 76 | ✗ | index_pos = strlen(type_name); | |
| 77 | ✗ | name = av_malloc(index_pos + 4); | |
| 78 | ✗ | if (!name) | |
| 79 | ✗ | return NULL; | |
| 80 | ✗ | for (index = 0; index < index_limit; index++) { | |
| 81 | ✗ | snprintf(name, index_pos + 4, "%s%d", type_name, index); | |
| 82 | ✗ | if (!hw_device_get_by_name(name)) | |
| 83 | ✗ | break; | |
| 84 | } | ||
| 85 | ✗ | if (index >= index_limit) { | |
| 86 | ✗ | av_freep(&name); | |
| 87 | ✗ | return NULL; | |
| 88 | } | ||
| 89 | ✗ | return name; | |
| 90 | } | ||
| 91 | |||
| 92 | ✗ | int hw_device_init_from_string(const char *arg, HWDevice **dev_out) | |
| 93 | { | ||
| 94 | // "type=name" | ||
| 95 | // "type=name,key=value,key2=value2" | ||
| 96 | // "type=name:device,key=value,key2=value2" | ||
| 97 | // "type:device,key=value,key2=value2" | ||
| 98 | // -> av_hwdevice_ctx_create() | ||
| 99 | // "type=name@name" | ||
| 100 | // "type@name" | ||
| 101 | // -> av_hwdevice_ctx_create_derived() | ||
| 102 | |||
| 103 | ✗ | AVDictionary *options = NULL; | |
| 104 | ✗ | const char *type_name = NULL, *name = NULL, *device = NULL; | |
| 105 | enum AVHWDeviceType type; | ||
| 106 | HWDevice *dev, *src; | ||
| 107 | ✗ | AVBufferRef *device_ref = NULL; | |
| 108 | int err; | ||
| 109 | const char *errmsg, *p, *q; | ||
| 110 | size_t k; | ||
| 111 | |||
| 112 | ✗ | k = strcspn(arg, ":=@"); | |
| 113 | ✗ | p = arg + k; | |
| 114 | |||
| 115 | ✗ | type_name = av_strndup(arg, k); | |
| 116 | ✗ | if (!type_name) { | |
| 117 | ✗ | err = AVERROR(ENOMEM); | |
| 118 | ✗ | goto fail; | |
| 119 | } | ||
| 120 | ✗ | type = av_hwdevice_find_type_by_name(type_name); | |
| 121 | ✗ | if (type == AV_HWDEVICE_TYPE_NONE) { | |
| 122 | ✗ | errmsg = "unknown device type"; | |
| 123 | ✗ | goto invalid; | |
| 124 | } | ||
| 125 | |||
| 126 | ✗ | if (*p == '=') { | |
| 127 | ✗ | k = strcspn(p + 1, ":@,"); | |
| 128 | |||
| 129 | ✗ | name = av_strndup(p + 1, k); | |
| 130 | ✗ | if (!name) { | |
| 131 | ✗ | err = AVERROR(ENOMEM); | |
| 132 | ✗ | goto fail; | |
| 133 | } | ||
| 134 | ✗ | if (hw_device_get_by_name(name)) { | |
| 135 | ✗ | errmsg = "named device already exists"; | |
| 136 | ✗ | goto invalid; | |
| 137 | } | ||
| 138 | |||
| 139 | ✗ | p += 1 + k; | |
| 140 | } else { | ||
| 141 | ✗ | name = hw_device_default_name(type); | |
| 142 | ✗ | if (!name) { | |
| 143 | ✗ | err = AVERROR(ENOMEM); | |
| 144 | ✗ | goto fail; | |
| 145 | } | ||
| 146 | } | ||
| 147 | |||
| 148 | ✗ | if (!*p) { | |
| 149 | // New device with no parameters. | ||
| 150 | ✗ | err = av_hwdevice_ctx_create(&device_ref, type, | |
| 151 | NULL, NULL, 0); | ||
| 152 | ✗ | if (err < 0) | |
| 153 | ✗ | goto fail; | |
| 154 | |||
| 155 | ✗ | } else if (*p == ':') { | |
| 156 | // New device with some parameters. | ||
| 157 | ✗ | ++p; | |
| 158 | ✗ | q = strchr(p, ','); | |
| 159 | ✗ | if (q) { | |
| 160 | ✗ | if (q - p > 0) { | |
| 161 | ✗ | device = av_strndup(p, q - p); | |
| 162 | ✗ | if (!device) { | |
| 163 | ✗ | err = AVERROR(ENOMEM); | |
| 164 | ✗ | goto fail; | |
| 165 | } | ||
| 166 | } | ||
| 167 | ✗ | err = av_dict_parse_string(&options, q + 1, "=", ",", 0); | |
| 168 | ✗ | if (err < 0) { | |
| 169 | ✗ | errmsg = "failed to parse options"; | |
| 170 | ✗ | goto invalid; | |
| 171 | } | ||
| 172 | } | ||
| 173 | |||
| 174 | ✗ | err = av_hwdevice_ctx_create(&device_ref, type, | |
| 175 | ✗ | q ? device : p[0] ? p : NULL, | |
| 176 | options, 0); | ||
| 177 | ✗ | if (err < 0) | |
| 178 | ✗ | goto fail; | |
| 179 | |||
| 180 | ✗ | } else if (*p == '@') { | |
| 181 | // Derive from existing device. | ||
| 182 | |||
| 183 | ✗ | src = hw_device_get_by_name(p + 1); | |
| 184 | ✗ | if (!src) { | |
| 185 | ✗ | errmsg = "invalid source device name"; | |
| 186 | ✗ | goto invalid; | |
| 187 | } | ||
| 188 | |||
| 189 | ✗ | err = av_hwdevice_ctx_create_derived(&device_ref, type, | |
| 190 | src->device_ref, 0); | ||
| 191 | ✗ | if (err < 0) | |
| 192 | ✗ | goto fail; | |
| 193 | ✗ | } else if (*p == ',') { | |
| 194 | ✗ | err = av_dict_parse_string(&options, p + 1, "=", ",", 0); | |
| 195 | |||
| 196 | ✗ | if (err < 0) { | |
| 197 | ✗ | errmsg = "failed to parse options"; | |
| 198 | ✗ | goto invalid; | |
| 199 | } | ||
| 200 | |||
| 201 | ✗ | err = av_hwdevice_ctx_create(&device_ref, type, | |
| 202 | NULL, options, 0); | ||
| 203 | ✗ | if (err < 0) | |
| 204 | ✗ | goto fail; | |
| 205 | } else { | ||
| 206 | ✗ | errmsg = "parse error"; | |
| 207 | ✗ | goto invalid; | |
| 208 | } | ||
| 209 | |||
| 210 | ✗ | dev = hw_device_add(); | |
| 211 | ✗ | if (!dev) { | |
| 212 | ✗ | err = AVERROR(ENOMEM); | |
| 213 | ✗ | goto fail; | |
| 214 | } | ||
| 215 | |||
| 216 | ✗ | dev->name = name; | |
| 217 | ✗ | dev->type = type; | |
| 218 | ✗ | dev->device_ref = device_ref; | |
| 219 | |||
| 220 | ✗ | if (dev_out) | |
| 221 | ✗ | *dev_out = dev; | |
| 222 | |||
| 223 | ✗ | name = NULL; | |
| 224 | ✗ | err = 0; | |
| 225 | ✗ | done: | |
| 226 | ✗ | av_freep(&type_name); | |
| 227 | ✗ | av_freep(&name); | |
| 228 | ✗ | av_freep(&device); | |
| 229 | ✗ | av_dict_free(&options); | |
| 230 | ✗ | return err; | |
| 231 | ✗ | invalid: | |
| 232 | ✗ | av_log(NULL, AV_LOG_ERROR, | |
| 233 | "Invalid device specification \"%s\": %s\n", arg, errmsg); | ||
| 234 | ✗ | err = AVERROR(EINVAL); | |
| 235 | ✗ | goto done; | |
| 236 | ✗ | fail: | |
| 237 | ✗ | av_log(NULL, AV_LOG_ERROR, | |
| 238 | "Device creation failed: %d.\n", err); | ||
| 239 | ✗ | av_buffer_unref(&device_ref); | |
| 240 | ✗ | goto done; | |
| 241 | } | ||
| 242 | |||
| 243 | ✗ | int hw_device_init_from_type(enum AVHWDeviceType type, | |
| 244 | const char *device, | ||
| 245 | HWDevice **dev_out) | ||
| 246 | { | ||
| 247 | ✗ | AVBufferRef *device_ref = NULL; | |
| 248 | HWDevice *dev; | ||
| 249 | char *name; | ||
| 250 | int err; | ||
| 251 | |||
| 252 | ✗ | name = hw_device_default_name(type); | |
| 253 | ✗ | if (!name) { | |
| 254 | ✗ | err = AVERROR(ENOMEM); | |
| 255 | ✗ | goto fail; | |
| 256 | } | ||
| 257 | |||
| 258 | ✗ | err = av_hwdevice_ctx_create(&device_ref, type, device, NULL, 0); | |
| 259 | ✗ | if (err < 0) { | |
| 260 | ✗ | av_log(NULL, AV_LOG_ERROR, | |
| 261 | "Device creation failed: %d.\n", err); | ||
| 262 | ✗ | goto fail; | |
| 263 | } | ||
| 264 | |||
| 265 | ✗ | dev = hw_device_add(); | |
| 266 | ✗ | if (!dev) { | |
| 267 | ✗ | err = AVERROR(ENOMEM); | |
| 268 | ✗ | goto fail; | |
| 269 | } | ||
| 270 | |||
| 271 | ✗ | dev->name = name; | |
| 272 | ✗ | dev->type = type; | |
| 273 | ✗ | dev->device_ref = device_ref; | |
| 274 | |||
| 275 | ✗ | if (dev_out) | |
| 276 | ✗ | *dev_out = dev; | |
| 277 | |||
| 278 | ✗ | return 0; | |
| 279 | |||
| 280 | ✗ | fail: | |
| 281 | ✗ | av_freep(&name); | |
| 282 | ✗ | av_buffer_unref(&device_ref); | |
| 283 | ✗ | return err; | |
| 284 | } | ||
| 285 | |||
| 286 | 8263 | void hw_device_free_all(void) | |
| 287 | { | ||
| 288 | int i; | ||
| 289 |
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8263 | for (i = 0; i < nb_hw_devices; i++) { |
| 290 | ✗ | av_freep(&hw_devices[i]->name); | |
| 291 | ✗ | av_buffer_unref(&hw_devices[i]->device_ref); | |
| 292 | ✗ | av_freep(&hw_devices[i]); | |
| 293 | } | ||
| 294 | 8263 | av_freep(&hw_devices); | |
| 295 | 8263 | nb_hw_devices = 0; | |
| 296 | 8263 | } | |
| 297 | |||
| 298 | 15802 | AVBufferRef *hw_device_for_filter(void) | |
| 299 | { | ||
| 300 | // Pick the last hardware device if the user doesn't pick the device for | ||
| 301 | // filters explicitly with the filter_hw_device option. | ||
| 302 |
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15802 | if (filter_hw_device) |
| 303 | ✗ | return filter_hw_device->device_ref; | |
| 304 |
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15802 | else if (nb_hw_devices > 0) { |
| 305 | ✗ | HWDevice *dev = hw_devices[nb_hw_devices - 1]; | |
| 306 | |||
| 307 | ✗ | if (nb_hw_devices > 1) | |
| 308 | ✗ | av_log(NULL, AV_LOG_WARNING, "There are %d hardware devices. device " | |
| 309 | "%s of type %s is picked for filters by default. Set hardware " | ||
| 310 | "device explicitly with the filter_hw_device option if device " | ||
| 311 | "%s is not usable for filters.\n", | ||
| 312 | nb_hw_devices, dev->name, | ||
| 313 | av_hwdevice_get_type_name(dev->type), dev->name); | ||
| 314 | |||
| 315 | ✗ | return dev->device_ref; | |
| 316 | } | ||
| 317 | |||
| 318 | 15802 | return NULL; | |
| 319 | } | ||
| 320 |