1 /*
2 * IIDC1394 grab interface (uses libdc1394 and libraw1394)
3 * Copyright (c) 2004 Roman Shaposhnik
4 * Copyright (c) 2008 Alessandro Sappia
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #include <dc1394/dc1394.h>
24
25 #include "libavutil/imgutils.h"
26 #include "libavutil/internal.h"
27 #include "libavutil/log.h"
28 #include "libavutil/mathematics.h"
29 #include "libavutil/opt.h"
30 #include "libavutil/parseutils.h"
31 #include "libavutil/pixdesc.h"
32
33 #include "libavformat/avformat.h"
34 #include "libavformat/internal.h"
35
36 typedef struct dc1394_data {
37 AVClass *class;
38 dc1394_t *d;
39 dc1394camera_t *camera;
40 dc1394video_frame_t *frame;
41 int current_frame;
42 int frame_rate; /**< frames per 1000 seconds (fps * 1000) */
43 char *video_size; /**< String describing video size, set by a private option. */
44 char *pixel_format; /**< Set by a private option. */
45 char *framerate; /**< Set by a private option. */
46
47 int size;
48 int stream_index;
49 } dc1394_data;
50
51 static const struct dc1394_frame_format {
52 int width;
53 int height;
54 enum AVPixelFormat pix_fmt;
55 int frame_size_id;
56 } dc1394_frame_formats[] = {
57 { 320, 240, AV_PIX_FMT_UYVY422, DC1394_VIDEO_MODE_320x240_YUV422 },
58 { 640, 480, AV_PIX_FMT_GRAY8, DC1394_VIDEO_MODE_640x480_MONO8 },
59 { 640, 480, AV_PIX_FMT_UYYVYY411, DC1394_VIDEO_MODE_640x480_YUV411 },
60 { 640, 480, AV_PIX_FMT_UYVY422, DC1394_VIDEO_MODE_640x480_YUV422 },
61 { 0, 0, 0, 0 } /* gotta be the last one */
62 };
63
64 static const struct dc1394_frame_rate {
65 int frame_rate;
66 int frame_rate_id;
67 } dc1394_frame_rates[] = {
68 { 1875, DC1394_FRAMERATE_1_875 },
69 { 3750, DC1394_FRAMERATE_3_75 },
70 { 7500, DC1394_FRAMERATE_7_5 },
71 { 15000, DC1394_FRAMERATE_15 },
72 { 30000, DC1394_FRAMERATE_30 },
73 { 60000, DC1394_FRAMERATE_60 },
74 {120000, DC1394_FRAMERATE_120 },
75 {240000, DC1394_FRAMERATE_240 },
76 { 0, 0 } /* gotta be the last one */
77 };
78
79 #define OFFSET(x) offsetof(dc1394_data, x)
80 #define DEC AV_OPT_FLAG_DECODING_PARAM
81 static const AVOption options[] = {
82 { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = "qvga"}, 0, 0, DEC },
83 { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = "uyvy422"}, 0, 0, DEC },
84 { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "ntsc"}, 0, 0, DEC },
85 { NULL },
86 };
87
88 static const AVClass libdc1394_class = {
89 .class_name = "libdc1394 indev",
90 .item_name = av_default_item_name,
91 .option = options,
92 .version = LIBAVUTIL_VERSION_INT,
93 .category = AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT,
94 };
95
96
dc1394_read_common(AVFormatContext * c,const struct dc1394_frame_format ** select_fmt,const struct dc1394_frame_rate ** select_fps)97 static inline int dc1394_read_common(AVFormatContext *c,
98 const struct dc1394_frame_format **select_fmt, const struct dc1394_frame_rate **select_fps)
99 {
100 dc1394_data* dc1394 = c->priv_data;
101 AVStream* vst;
102 const struct dc1394_frame_format *fmt;
103 const struct dc1394_frame_rate *fps;
104 enum AVPixelFormat pix_fmt;
105 int width, height;
106 AVRational framerate;
107 int ret = 0;
108
109 if ((pix_fmt = av_get_pix_fmt(dc1394->pixel_format)) == AV_PIX_FMT_NONE) {
110 av_log(c, AV_LOG_ERROR, "No such pixel format: %s.\n", dc1394->pixel_format);
111 ret = AVERROR(EINVAL);
112 goto out;
113 }
114
115 if ((ret = av_parse_video_size(&width, &height, dc1394->video_size)) < 0) {
116 av_log(c, AV_LOG_ERROR, "Could not parse video size '%s'.\n", dc1394->video_size);
117 goto out;
118 }
119 if ((ret = av_parse_video_rate(&framerate, dc1394->framerate)) < 0) {
120 av_log(c, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", dc1394->framerate);
121 goto out;
122 }
123 dc1394->frame_rate = av_rescale(1000, framerate.num, framerate.den);
124
125 for (fmt = dc1394_frame_formats; fmt->width; fmt++)
126 if (fmt->pix_fmt == pix_fmt && fmt->width == width && fmt->height == height)
127 break;
128
129 for (fps = dc1394_frame_rates; fps->frame_rate; fps++)
130 if (fps->frame_rate == dc1394->frame_rate)
131 break;
132
133 if (!fps->frame_rate || !fmt->width) {
134 av_log(c, AV_LOG_ERROR, "Can't find matching camera format for %s, %dx%d@%d:1000fps\n", av_get_pix_fmt_name(pix_fmt),
135 width, height, dc1394->frame_rate);
136 ret = AVERROR(EINVAL);
137 goto out;
138 }
139
140 /* create a video stream */
141 vst = avformat_new_stream(c, NULL);
142 if (!vst) {
143 ret = AVERROR(ENOMEM);
144 goto out;
145 }
146 avpriv_set_pts_info(vst, 64, 1, 1000);
147 vst->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
148 vst->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO;
149 vst->codecpar->width = fmt->width;
150 vst->codecpar->height = fmt->height;
151 vst->codecpar->format = fmt->pix_fmt;
152 vst->avg_frame_rate = framerate;
153
154 dc1394->current_frame = 0;
155 dc1394->stream_index = vst->index;
156 dc1394->size = av_image_get_buffer_size(fmt->pix_fmt,
157 fmt->width, fmt->height, 1);
158
159 vst->codecpar->bit_rate = av_rescale(dc1394->size * 8,
160 fps->frame_rate, 1000);
161 *select_fps = fps;
162 *select_fmt = fmt;
163 out:
164 return ret;
165 }
166
dc1394_read_header(AVFormatContext * c)167 static int dc1394_read_header(AVFormatContext *c)
168 {
169 dc1394_data* dc1394 = c->priv_data;
170 dc1394camera_list_t *list;
171 int res, i;
172 const struct dc1394_frame_format *fmt = NULL;
173 const struct dc1394_frame_rate *fps = NULL;
174
175 if (dc1394_read_common(c, &fmt, &fps) != 0)
176 return -1;
177
178 /* Now let us prep the hardware. */
179 dc1394->d = dc1394_new();
180 if (dc1394_camera_enumerate(dc1394->d, &list) != DC1394_SUCCESS || !list) {
181 av_log(c, AV_LOG_ERROR, "Unable to look for an IIDC camera.\n");
182 goto out;
183 }
184
185 if (list->num == 0) {
186 av_log(c, AV_LOG_ERROR, "No cameras found.\n");
187 dc1394_camera_free_list(list);
188 goto out;
189 }
190
191 /* FIXME: To select a specific camera I need to search in list its guid */
192 dc1394->camera = dc1394_camera_new (dc1394->d, list->ids[0].guid);
193
194 if (!dc1394->camera) {
195 av_log(c, AV_LOG_ERROR, "Unable to open camera with guid 0x%"PRIx64"\n",
196 list->ids[0].guid);
197 dc1394_camera_free_list(list);
198 goto out;
199 }
200
201 if (list->num > 1) {
202 av_log(c, AV_LOG_INFO, "Working with the first camera found\n");
203 }
204
205 /* Freeing list of cameras */
206 dc1394_camera_free_list (list);
207
208 /* Select MAX Speed possible from the cam */
209 if (dc1394->camera->bmode_capable>0) {
210 dc1394_video_set_operation_mode(dc1394->camera, DC1394_OPERATION_MODE_1394B);
211 i = DC1394_ISO_SPEED_800;
212 } else {
213 i = DC1394_ISO_SPEED_400;
214 }
215
216 for (res = DC1394_FAILURE; i >= DC1394_ISO_SPEED_MIN && res != DC1394_SUCCESS; i--) {
217 res=dc1394_video_set_iso_speed(dc1394->camera, i);
218 }
219 if (res != DC1394_SUCCESS) {
220 av_log(c, AV_LOG_ERROR, "Couldn't set ISO Speed\n");
221 goto out_camera;
222 }
223
224 if (dc1394_video_set_mode(dc1394->camera, fmt->frame_size_id) != DC1394_SUCCESS) {
225 av_log(c, AV_LOG_ERROR, "Couldn't set video format\n");
226 goto out_camera;
227 }
228
229 if (dc1394_video_set_framerate(dc1394->camera,fps->frame_rate_id) != DC1394_SUCCESS) {
230 av_log(c, AV_LOG_ERROR, "Couldn't set framerate %d \n",fps->frame_rate);
231 goto out_camera;
232 }
233 if (dc1394_capture_setup(dc1394->camera, 10, DC1394_CAPTURE_FLAGS_DEFAULT)!=DC1394_SUCCESS) {
234 av_log(c, AV_LOG_ERROR, "Cannot setup camera \n");
235 goto out_camera;
236 }
237
238 if (dc1394_video_set_transmission(dc1394->camera, DC1394_ON) !=DC1394_SUCCESS) {
239 av_log(c, AV_LOG_ERROR, "Cannot start capture\n");
240 goto out_camera;
241 }
242 return 0;
243
244 out_camera:
245 dc1394_capture_stop(dc1394->camera);
246 dc1394_video_set_transmission(dc1394->camera, DC1394_OFF);
247 dc1394_camera_free (dc1394->camera);
248 out:
249 dc1394_free(dc1394->d);
250 return -1;
251 }
252
dc1394_read_packet(AVFormatContext * c,AVPacket * pkt)253 static int dc1394_read_packet(AVFormatContext *c, AVPacket *pkt)
254 {
255 struct dc1394_data *dc1394 = c->priv_data;
256 int res;
257
258 /* discard stale frame */
259 if (dc1394->current_frame++) {
260 if (dc1394_capture_enqueue(dc1394->camera, dc1394->frame) != DC1394_SUCCESS)
261 av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame);
262 }
263
264 res = dc1394_capture_dequeue(dc1394->camera, DC1394_CAPTURE_POLICY_WAIT, &dc1394->frame);
265 if (res == DC1394_SUCCESS) {
266 pkt->data = (uint8_t *)dc1394->frame->image;
267 pkt->size = dc1394->frame->image_bytes;
268 pkt->pts = dc1394->current_frame * 1000000 / dc1394->frame_rate;
269 pkt->flags |= AV_PKT_FLAG_KEY;
270 pkt->stream_index = dc1394->stream_index;
271 } else {
272 av_log(c, AV_LOG_ERROR, "DMA capture failed\n");
273 return AVERROR_INVALIDDATA;
274 }
275
276 return pkt->size;
277 }
278
dc1394_close(AVFormatContext * context)279 static int dc1394_close(AVFormatContext * context)
280 {
281 struct dc1394_data *dc1394 = context->priv_data;
282
283 dc1394_video_set_transmission(dc1394->camera, DC1394_OFF);
284 dc1394_capture_stop(dc1394->camera);
285 dc1394_camera_free(dc1394->camera);
286 dc1394_free(dc1394->d);
287
288 return 0;
289 }
290
291 AVInputFormat ff_libdc1394_demuxer = {
292 .name = "libdc1394",
293 .long_name = NULL_IF_CONFIG_SMALL("dc1394 v.2 A/V grab"),
294 .priv_data_size = sizeof(struct dc1394_data),
295 .read_header = dc1394_read_header,
296 .read_packet = dc1394_read_packet,
297 .read_close = dc1394_close,
298 .flags = AVFMT_NOFILE,
299 .priv_class = &libdc1394_class,
300 };
301