Libav 0.7.1
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00001 /* 00002 * IIDC1394 grab interface (uses libdc1394 and libraw1394) 00003 * Copyright (c) 2004 Roman Shaposhnik 00004 * Copyright (c) 2008 Alessandro Sappia 00005 * 00006 * This file is part of Libav. 00007 * 00008 * Libav is free software; you can redistribute it and/or 00009 * modify it under the terms of the GNU Lesser General Public 00010 * License as published by the Free Software Foundation; either 00011 * version 2.1 of the License, or (at your option) any later version. 00012 * 00013 * Libav is distributed in the hope that it will be useful, 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00016 * Lesser General Public License for more details. 00017 * 00018 * You should have received a copy of the GNU Lesser General Public 00019 * License along with Libav; if not, write to the Free Software 00020 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00021 */ 00022 00023 #include "config.h" 00024 #include "libavformat/avformat.h" 00025 #include "libavutil/log.h" 00026 #include "libavutil/opt.h" 00027 #include "libavutil/parseutils.h" 00028 #include "libavutil/pixdesc.h" 00029 00030 #if HAVE_LIBDC1394_2 00031 #include <dc1394/dc1394.h> 00032 #elif HAVE_LIBDC1394_1 00033 #include <libraw1394/raw1394.h> 00034 #include <libdc1394/dc1394_control.h> 00035 00036 #define DC1394_VIDEO_MODE_320x240_YUV422 MODE_320x240_YUV422 00037 #define DC1394_VIDEO_MODE_640x480_YUV411 MODE_640x480_YUV411 00038 #define DC1394_VIDEO_MODE_640x480_YUV422 MODE_640x480_YUV422 00039 #define DC1394_FRAMERATE_1_875 FRAMERATE_1_875 00040 #define DC1394_FRAMERATE_3_75 FRAMERATE_3_75 00041 #define DC1394_FRAMERATE_7_5 FRAMERATE_7_5 00042 #define DC1394_FRAMERATE_15 FRAMERATE_15 00043 #define DC1394_FRAMERATE_30 FRAMERATE_30 00044 #define DC1394_FRAMERATE_60 FRAMERATE_60 00045 #define DC1394_FRAMERATE_120 FRAMERATE_120 00046 #define DC1394_FRAMERATE_240 FRAMERATE_240 00047 #endif 00048 00049 #undef free 00050 00051 typedef struct dc1394_data { 00052 AVClass *class; 00053 #if HAVE_LIBDC1394_1 00054 raw1394handle_t handle; 00055 dc1394_cameracapture camera; 00056 int channel; 00057 #elif HAVE_LIBDC1394_2 00058 dc1394_t *d; 00059 dc1394camera_t *camera; 00060 dc1394video_frame_t *frame; 00061 #endif 00062 int current_frame; 00063 int frame_rate; 00064 char *video_size; 00065 char *pixel_format; 00066 char *framerate; 00068 AVPacket packet; 00069 } dc1394_data; 00070 00071 struct dc1394_frame_format { 00072 int width; 00073 int height; 00074 enum PixelFormat pix_fmt; 00075 int frame_size_id; 00076 } dc1394_frame_formats[] = { 00077 { 320, 240, PIX_FMT_UYVY422, DC1394_VIDEO_MODE_320x240_YUV422 }, 00078 { 640, 480, PIX_FMT_UYYVYY411, DC1394_VIDEO_MODE_640x480_YUV411 }, 00079 { 640, 480, PIX_FMT_UYVY422, DC1394_VIDEO_MODE_640x480_YUV422 }, 00080 { 0, 0, 0, 0 } /* gotta be the last one */ 00081 }; 00082 00083 struct dc1394_frame_rate { 00084 int frame_rate; 00085 int frame_rate_id; 00086 } dc1394_frame_rates[] = { 00087 { 1875, DC1394_FRAMERATE_1_875 }, 00088 { 3750, DC1394_FRAMERATE_3_75 }, 00089 { 7500, DC1394_FRAMERATE_7_5 }, 00090 { 15000, DC1394_FRAMERATE_15 }, 00091 { 30000, DC1394_FRAMERATE_30 }, 00092 { 60000, DC1394_FRAMERATE_60 }, 00093 {120000, DC1394_FRAMERATE_120 }, 00094 {240000, DC1394_FRAMERATE_240 }, 00095 { 0, 0 } /* gotta be the last one */ 00096 }; 00097 00098 #define OFFSET(x) offsetof(dc1394_data, x) 00099 #define DEC AV_OPT_FLAG_DECODING_PARAM 00100 static const AVOption options[] = { 00101 #if HAVE_LIBDC1394_1 00102 { "channel", "", offsetof(dc1394_data, channel), FF_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, 00103 #endif 00104 { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), FF_OPT_TYPE_STRING, {.str = "qvga"}, 0, 0, DEC }, 00105 { "pixel_format", "", OFFSET(pixel_format), FF_OPT_TYPE_STRING, {.str = "uyvy422"}, 0, 0, DEC }, 00106 { "framerate", "", OFFSET(framerate), FF_OPT_TYPE_STRING, {.str = "ntsc"}, 0, 0, DEC }, 00107 { NULL }, 00108 }; 00109 00110 static const AVClass libdc1394_class = { 00111 .class_name = "libdc1394 indev", 00112 .item_name = av_default_item_name, 00113 .option = options, 00114 .version = LIBAVUTIL_VERSION_INT, 00115 }; 00116 00117 00118 static inline int dc1394_read_common(AVFormatContext *c, AVFormatParameters *ap, 00119 struct dc1394_frame_format **select_fmt, struct dc1394_frame_rate **select_fps) 00120 { 00121 dc1394_data* dc1394 = c->priv_data; 00122 AVStream* vst; 00123 struct dc1394_frame_format *fmt; 00124 struct dc1394_frame_rate *fps; 00125 enum PixelFormat pix_fmt; 00126 int width, height; 00127 AVRational framerate; 00128 int ret = 0; 00129 00130 if ((pix_fmt = av_get_pix_fmt(dc1394->pixel_format)) == PIX_FMT_NONE) { 00131 av_log(c, AV_LOG_ERROR, "No such pixel format: %s.\n", dc1394->pixel_format); 00132 ret = AVERROR(EINVAL); 00133 goto out; 00134 } 00135 00136 if ((ret = av_parse_video_size(&width, &height, dc1394->video_size)) < 0) { 00137 av_log(c, AV_LOG_ERROR, "Couldn't parse video size.\n"); 00138 goto out; 00139 } 00140 if ((ret = av_parse_video_rate(&framerate, dc1394->framerate)) < 0) { 00141 av_log(c, AV_LOG_ERROR, "Couldn't parse framerate.\n"); 00142 goto out; 00143 } 00144 #if FF_API_FORMAT_PARAMETERS 00145 if (ap->width > 0) 00146 width = ap->width; 00147 if (ap->height > 0) 00148 height = ap->height; 00149 if (ap->pix_fmt) 00150 pix_fmt = ap->pix_fmt; 00151 if (ap->time_base.num) 00152 framerate = (AVRational){ap->time_base.den, ap->time_base.num}; 00153 #endif 00154 dc1394->frame_rate = av_rescale(1000, framerate.num, framerate.den); 00155 00156 for (fmt = dc1394_frame_formats; fmt->width; fmt++) 00157 if (fmt->pix_fmt == pix_fmt && fmt->width == width && fmt->height == height) 00158 break; 00159 00160 for (fps = dc1394_frame_rates; fps->frame_rate; fps++) 00161 if (fps->frame_rate == dc1394->frame_rate) 00162 break; 00163 00164 if (!fps->frame_rate || !fmt->width) { 00165 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), 00166 width, height, dc1394->frame_rate); 00167 ret = AVERROR(EINVAL); 00168 goto out; 00169 } 00170 00171 /* create a video stream */ 00172 vst = av_new_stream(c, 0); 00173 if (!vst) { 00174 ret = AVERROR(ENOMEM); 00175 goto out; 00176 } 00177 av_set_pts_info(vst, 64, 1, 1000); 00178 vst->codec->codec_type = AVMEDIA_TYPE_VIDEO; 00179 vst->codec->codec_id = CODEC_ID_RAWVIDEO; 00180 vst->codec->time_base.den = framerate.num; 00181 vst->codec->time_base.num = framerate.den; 00182 vst->codec->width = fmt->width; 00183 vst->codec->height = fmt->height; 00184 vst->codec->pix_fmt = fmt->pix_fmt; 00185 00186 /* packet init */ 00187 av_init_packet(&dc1394->packet); 00188 dc1394->packet.size = avpicture_get_size(fmt->pix_fmt, fmt->width, fmt->height); 00189 dc1394->packet.stream_index = vst->index; 00190 dc1394->packet.flags |= AV_PKT_FLAG_KEY; 00191 00192 dc1394->current_frame = 0; 00193 00194 vst->codec->bit_rate = av_rescale(dc1394->packet.size * 8, fps->frame_rate, 1000); 00195 *select_fps = fps; 00196 *select_fmt = fmt; 00197 out: 00198 return ret; 00199 } 00200 00201 #if HAVE_LIBDC1394_1 00202 static int dc1394_v1_read_header(AVFormatContext *c, AVFormatParameters * ap) 00203 { 00204 dc1394_data* dc1394 = c->priv_data; 00205 AVStream* vst; 00206 nodeid_t* camera_nodes; 00207 int res; 00208 struct dc1394_frame_format *fmt = NULL; 00209 struct dc1394_frame_rate *fps = NULL; 00210 00211 if (dc1394_read_common(c,ap,&fmt,&fps) != 0) 00212 return -1; 00213 00214 #if FF_API_FORMAT_PARAMETERS 00215 if (ap->channel) 00216 dc1394->channel = ap->channel; 00217 #endif 00218 00219 /* Now let us prep the hardware. */ 00220 dc1394->handle = dc1394_create_handle(0); /* FIXME: gotta have ap->port */ 00221 if (!dc1394->handle) { 00222 av_log(c, AV_LOG_ERROR, "Can't acquire dc1394 handle on port %d\n", 0 /* ap->port */); 00223 goto out; 00224 } 00225 camera_nodes = dc1394_get_camera_nodes(dc1394->handle, &res, 1); 00226 if (!camera_nodes || camera_nodes[dc1394->channel] == DC1394_NO_CAMERA) { 00227 av_log(c, AV_LOG_ERROR, "There's no IIDC camera on the channel %d\n", dc1394->channel); 00228 goto out_handle; 00229 } 00230 res = dc1394_dma_setup_capture(dc1394->handle, camera_nodes[dc1394->channel], 00231 0, 00232 FORMAT_VGA_NONCOMPRESSED, 00233 fmt->frame_size_id, 00234 SPEED_400, 00235 fps->frame_rate_id, 8, 1, 00236 c->filename, 00237 &dc1394->camera); 00238 dc1394_free_camera_nodes(camera_nodes); 00239 if (res != DC1394_SUCCESS) { 00240 av_log(c, AV_LOG_ERROR, "Can't prepare camera for the DMA capture\n"); 00241 goto out_handle; 00242 } 00243 00244 res = dc1394_start_iso_transmission(dc1394->handle, dc1394->camera.node); 00245 if (res != DC1394_SUCCESS) { 00246 av_log(c, AV_LOG_ERROR, "Can't start isochronous transmission\n"); 00247 goto out_handle_dma; 00248 } 00249 00250 return 0; 00251 00252 out_handle_dma: 00253 dc1394_dma_unlisten(dc1394->handle, &dc1394->camera); 00254 dc1394_dma_release_camera(dc1394->handle, &dc1394->camera); 00255 out_handle: 00256 dc1394_destroy_handle(dc1394->handle); 00257 out: 00258 return -1; 00259 } 00260 00261 static int dc1394_v1_read_packet(AVFormatContext *c, AVPacket *pkt) 00262 { 00263 struct dc1394_data *dc1394 = c->priv_data; 00264 int res; 00265 00266 /* discard stale frame */ 00267 if (dc1394->current_frame++) { 00268 if (dc1394_dma_done_with_buffer(&dc1394->camera) != DC1394_SUCCESS) 00269 av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame); 00270 } 00271 00272 res = dc1394_dma_single_capture(&dc1394->camera); 00273 00274 if (res == DC1394_SUCCESS) { 00275 dc1394->packet.data = (uint8_t *)(dc1394->camera.capture_buffer); 00276 dc1394->packet.pts = (dc1394->current_frame * 1000000) / dc1394->frame_rate; 00277 res = dc1394->packet.size; 00278 } else { 00279 av_log(c, AV_LOG_ERROR, "DMA capture failed\n"); 00280 dc1394->packet.data = NULL; 00281 res = -1; 00282 } 00283 00284 *pkt = dc1394->packet; 00285 return res; 00286 } 00287 00288 static int dc1394_v1_close(AVFormatContext * context) 00289 { 00290 struct dc1394_data *dc1394 = context->priv_data; 00291 00292 dc1394_stop_iso_transmission(dc1394->handle, dc1394->camera.node); 00293 dc1394_dma_unlisten(dc1394->handle, &dc1394->camera); 00294 dc1394_dma_release_camera(dc1394->handle, &dc1394->camera); 00295 dc1394_destroy_handle(dc1394->handle); 00296 00297 return 0; 00298 } 00299 00300 #elif HAVE_LIBDC1394_2 00301 static int dc1394_v2_read_header(AVFormatContext *c, AVFormatParameters * ap) 00302 { 00303 dc1394_data* dc1394 = c->priv_data; 00304 dc1394camera_list_t *list; 00305 int res, i; 00306 struct dc1394_frame_format *fmt = NULL; 00307 struct dc1394_frame_rate *fps = NULL; 00308 00309 if (dc1394_read_common(c,ap,&fmt,&fps) != 0) 00310 return -1; 00311 00312 /* Now let us prep the hardware. */ 00313 dc1394->d = dc1394_new(); 00314 dc1394_camera_enumerate (dc1394->d, &list); 00315 if ( !list || list->num == 0) { 00316 av_log(c, AV_LOG_ERROR, "Unable to look for an IIDC camera\n\n"); 00317 goto out; 00318 } 00319 00320 /* FIXME: To select a specific camera I need to search in list its guid */ 00321 dc1394->camera = dc1394_camera_new (dc1394->d, list->ids[0].guid); 00322 if (list->num > 1) { 00323 av_log(c, AV_LOG_INFO, "Working with the first camera found\n"); 00324 } 00325 00326 /* Freeing list of cameras */ 00327 dc1394_camera_free_list (list); 00328 00329 /* Select MAX Speed possible from the cam */ 00330 if (dc1394->camera->bmode_capable>0) { 00331 dc1394_video_set_operation_mode(dc1394->camera, DC1394_OPERATION_MODE_1394B); 00332 i = DC1394_ISO_SPEED_800; 00333 } else { 00334 i = DC1394_ISO_SPEED_400; 00335 } 00336 00337 for (res = DC1394_FAILURE; i >= DC1394_ISO_SPEED_MIN && res != DC1394_SUCCESS; i--) { 00338 res=dc1394_video_set_iso_speed(dc1394->camera, i); 00339 } 00340 if (res != DC1394_SUCCESS) { 00341 av_log(c, AV_LOG_ERROR, "Couldn't set ISO Speed\n"); 00342 goto out_camera; 00343 } 00344 00345 if (dc1394_video_set_mode(dc1394->camera, fmt->frame_size_id) != DC1394_SUCCESS) { 00346 av_log(c, AV_LOG_ERROR, "Couldn't set video format\n"); 00347 goto out_camera; 00348 } 00349 00350 if (dc1394_video_set_framerate(dc1394->camera,fps->frame_rate_id) != DC1394_SUCCESS) { 00351 av_log(c, AV_LOG_ERROR, "Couldn't set framerate %d \n",fps->frame_rate); 00352 goto out_camera; 00353 } 00354 if (dc1394_capture_setup(dc1394->camera, 10, DC1394_CAPTURE_FLAGS_DEFAULT)!=DC1394_SUCCESS) { 00355 av_log(c, AV_LOG_ERROR, "Cannot setup camera \n"); 00356 goto out_camera; 00357 } 00358 00359 if (dc1394_video_set_transmission(dc1394->camera, DC1394_ON) !=DC1394_SUCCESS) { 00360 av_log(c, AV_LOG_ERROR, "Cannot start capture\n"); 00361 goto out_camera; 00362 } 00363 return 0; 00364 00365 out_camera: 00366 dc1394_capture_stop(dc1394->camera); 00367 dc1394_video_set_transmission(dc1394->camera, DC1394_OFF); 00368 dc1394_camera_free (dc1394->camera); 00369 out: 00370 dc1394_free(dc1394->d); 00371 return -1; 00372 } 00373 00374 static int dc1394_v2_read_packet(AVFormatContext *c, AVPacket *pkt) 00375 { 00376 struct dc1394_data *dc1394 = c->priv_data; 00377 int res; 00378 00379 /* discard stale frame */ 00380 if (dc1394->current_frame++) { 00381 if (dc1394_capture_enqueue(dc1394->camera, dc1394->frame) != DC1394_SUCCESS) 00382 av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame); 00383 } 00384 00385 res = dc1394_capture_dequeue(dc1394->camera, DC1394_CAPTURE_POLICY_WAIT, &dc1394->frame); 00386 if (res == DC1394_SUCCESS) { 00387 dc1394->packet.data = (uint8_t *)(dc1394->frame->image); 00388 dc1394->packet.pts = (dc1394->current_frame * 1000000) / (dc1394->frame_rate); 00389 res = dc1394->frame->image_bytes; 00390 } else { 00391 av_log(c, AV_LOG_ERROR, "DMA capture failed\n"); 00392 dc1394->packet.data = NULL; 00393 res = -1; 00394 } 00395 00396 *pkt = dc1394->packet; 00397 return res; 00398 } 00399 00400 static int dc1394_v2_close(AVFormatContext * context) 00401 { 00402 struct dc1394_data *dc1394 = context->priv_data; 00403 00404 dc1394_video_set_transmission(dc1394->camera, DC1394_OFF); 00405 dc1394_capture_stop(dc1394->camera); 00406 dc1394_camera_free(dc1394->camera); 00407 dc1394_free(dc1394->d); 00408 00409 return 0; 00410 } 00411 00412 AVInputFormat ff_libdc1394_demuxer = { 00413 .name = "libdc1394", 00414 .long_name = NULL_IF_CONFIG_SMALL("dc1394 v.2 A/V grab"), 00415 .priv_data_size = sizeof(struct dc1394_data), 00416 .read_header = dc1394_v2_read_header, 00417 .read_packet = dc1394_v2_read_packet, 00418 .read_close = dc1394_v2_close, 00419 .flags = AVFMT_NOFILE, 00420 .priv_class = &libdc1394_class, 00421 }; 00422 00423 #endif 00424 #if HAVE_LIBDC1394_1 00425 AVInputFormat ff_libdc1394_demuxer = { 00426 .name = "libdc1394", 00427 .long_name = NULL_IF_CONFIG_SMALL("dc1394 v.1 A/V grab"), 00428 .priv_data_size = sizeof(struct dc1394_data), 00429 .read_header = dc1394_v1_read_header, 00430 .read_packet = dc1394_v1_read_packet, 00431 .read_close = dc1394_v1_close, 00432 .flags = AVFMT_NOFILE, 00433 .priv_class = &libdc1394_class, 00434 }; 00435 #endif