FFmpeg: libavdevice/libdc1394.c Source File

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 FFmpeg.
00007  *
00008  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 
00026 #if HAVE_LIBDC1394_2
00027 #include <dc1394/dc1394.h>
00028 #elif HAVE_LIBDC1394_1
00029 #include <libraw1394/raw1394.h>
00030 #include <libdc1394/dc1394_control.h>
00031 
00032 #define DC1394_VIDEO_MODE_320x240_YUV422 MODE_320x240_YUV422
00033 #define DC1394_VIDEO_MODE_640x480_YUV411 MODE_640x480_YUV411
00034 #define DC1394_VIDEO_MODE_640x480_YUV422 MODE_640x480_YUV422
00035 #define DC1394_FRAMERATE_1_875 FRAMERATE_1_875
00036 #define DC1394_FRAMERATE_3_75  FRAMERATE_3_75
00037 #define DC1394_FRAMERATE_7_5   FRAMERATE_7_5
00038 #define DC1394_FRAMERATE_15    FRAMERATE_15
00039 #define DC1394_FRAMERATE_30    FRAMERATE_30
00040 #define DC1394_FRAMERATE_60    FRAMERATE_60
00041 #define DC1394_FRAMERATE_120   FRAMERATE_120
00042 #define DC1394_FRAMERATE_240   FRAMERATE_240
00043 #endif
00044 
00045 #undef free
00046 
00047 typedef struct dc1394_data {
00048 #if HAVE_LIBDC1394_1
00049     raw1394handle_t handle;
00050     dc1394_cameracapture camera;
00051 #elif HAVE_LIBDC1394_2
00052     dc1394_t *d;
00053     dc1394camera_t *camera;
00054     dc1394video_frame_t *frame;
00055 #endif
00056     int current_frame;
00057     int fps;
00058 
00059     AVPacket packet;
00060 } dc1394_data;
00061 
00062 struct dc1394_frame_format {
00063     int width;
00064     int height;
00065     enum PixelFormat pix_fmt;
00066     int frame_size_id;
00067 } dc1394_frame_formats[] = {
00068     { 320, 240, PIX_FMT_UYVY422, DC1394_VIDEO_MODE_320x240_YUV422 },
00069     { 640, 480, PIX_FMT_UYYVYY411, DC1394_VIDEO_MODE_640x480_YUV411 },
00070     { 640, 480, PIX_FMT_UYVY422, DC1394_VIDEO_MODE_640x480_YUV422 },
00071     { 0, 0, 0, 0 } /* gotta be the last one */
00072 };
00073 
00074 struct dc1394_frame_rate {
00075     int frame_rate;
00076     int frame_rate_id;
00077 } dc1394_frame_rates[] = {
00078     {  1875, DC1394_FRAMERATE_1_875 },
00079     {  3750, DC1394_FRAMERATE_3_75  },
00080     {  7500, DC1394_FRAMERATE_7_5   },
00081     { 15000, DC1394_FRAMERATE_15    },
00082     { 30000, DC1394_FRAMERATE_30    },
00083     { 60000, DC1394_FRAMERATE_60    },
00084     {120000, DC1394_FRAMERATE_120   },
00085     {240000, DC1394_FRAMERATE_240    },
00086     { 0, 0 } /* gotta be the last one */
00087 };
00088 
00089 static inline int dc1394_read_common(AVFormatContext *c, AVFormatParameters *ap,
00090                                      struct dc1394_frame_format **select_fmt, struct dc1394_frame_rate **select_fps)
00091 {
00092     dc1394_data* dc1394 = c->priv_data;
00093     AVStream* vst;
00094     struct dc1394_frame_format *fmt;
00095     struct dc1394_frame_rate *fps;
00096     enum PixelFormat pix_fmt = ap->pix_fmt == PIX_FMT_NONE ? PIX_FMT_UYVY422 : ap->pix_fmt; /* defaults */
00097     int width                = !ap->width ? 320 : ap->width;
00098     int height               = !ap->height ? 240 : ap->height;
00099     int frame_rate           = !ap->time_base.num ? 30000 : av_rescale(1000, ap->time_base.den, ap->time_base.num);
00100 
00101     for (fmt = dc1394_frame_formats; fmt->width; fmt++)
00102          if (fmt->pix_fmt == pix_fmt && fmt->width == width && fmt->height == height)
00103              break;
00104 
00105     for (fps = dc1394_frame_rates; fps->frame_rate; fps++)
00106          if (fps->frame_rate == frame_rate)
00107              break;
00108 
00109     if (!fps->frame_rate || !fmt->width) {
00110         av_log(c, AV_LOG_ERROR, "Can't find matching camera format for %s, %dx%d@%d:1000fps\n", avcodec_get_pix_fmt_name(pix_fmt),
00111                                                                                                 width, height, frame_rate);
00112         goto out;
00113     }
00114 
00115     /* create a video stream */
00116     vst = av_new_stream(c, 0);
00117     if (!vst)
00118         goto out;
00119     av_set_pts_info(vst, 64, 1, 1000);
00120     vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
00121     vst->codec->codec_id = CODEC_ID_RAWVIDEO;
00122     vst->codec->time_base.den = fps->frame_rate;
00123     vst->codec->time_base.num = 1000;
00124     vst->codec->width = fmt->width;
00125     vst->codec->height = fmt->height;
00126     vst->codec->pix_fmt = fmt->pix_fmt;
00127 
00128     /* packet init */
00129     av_init_packet(&dc1394->packet);
00130     dc1394->packet.size = avpicture_get_size(fmt->pix_fmt, fmt->width, fmt->height);
00131     dc1394->packet.stream_index = vst->index;
00132     dc1394->packet.flags |= AV_PKT_FLAG_KEY;
00133 
00134     dc1394->current_frame = 0;
00135     dc1394->fps = fps->frame_rate;
00136 
00137     vst->codec->bit_rate = av_rescale(dc1394->packet.size * 8, fps->frame_rate, 1000);
00138     *select_fps = fps;
00139     *select_fmt = fmt;
00140     return 0;
00141 out:
00142     return -1;
00143 }
00144 
00145 #if HAVE_LIBDC1394_1
00146 static int dc1394_v1_read_header(AVFormatContext *c, AVFormatParameters * ap)
00147 {
00148     dc1394_data* dc1394 = c->priv_data;
00149     AVStream* vst;
00150     nodeid_t* camera_nodes;
00151     int res;
00152     struct dc1394_frame_format *fmt = NULL;
00153     struct dc1394_frame_rate *fps = NULL;
00154 
00155     if (dc1394_read_common(c,ap,&fmt,&fps) != 0)
00156         return -1;
00157 
00158     /* Now let us prep the hardware. */
00159     dc1394->handle = dc1394_create_handle(0); /* FIXME: gotta have ap->port */
00160     if (!dc1394->handle) {
00161         av_log(c, AV_LOG_ERROR, "Can't acquire dc1394 handle on port %d\n", 0 /* ap->port */);
00162         goto out;
00163     }
00164     camera_nodes = dc1394_get_camera_nodes(dc1394->handle, &res, 1);
00165     if (!camera_nodes || camera_nodes[ap->channel] == DC1394_NO_CAMERA) {
00166         av_log(c, AV_LOG_ERROR, "There's no IIDC camera on the channel %d\n", ap->channel);
00167         goto out_handle;
00168     }
00169     res = dc1394_dma_setup_capture(dc1394->handle, camera_nodes[ap->channel],
00170                                    0,
00171                                    FORMAT_VGA_NONCOMPRESSED,
00172                                    fmt->frame_size_id,
00173                                    SPEED_400,
00174                                    fps->frame_rate_id, 8, 1,
00175                                    c->filename,
00176                                    &dc1394->camera);
00177     dc1394_free_camera_nodes(camera_nodes);
00178     if (res != DC1394_SUCCESS) {
00179         av_log(c, AV_LOG_ERROR, "Can't prepare camera for the DMA capture\n");
00180         goto out_handle;
00181     }
00182 
00183     res = dc1394_start_iso_transmission(dc1394->handle, dc1394->camera.node);
00184     if (res != DC1394_SUCCESS) {
00185         av_log(c, AV_LOG_ERROR, "Can't start isochronous transmission\n");
00186         goto out_handle_dma;
00187     }
00188 
00189     return 0;
00190 
00191 out_handle_dma:
00192     dc1394_dma_unlisten(dc1394->handle, &dc1394->camera);
00193     dc1394_dma_release_camera(dc1394->handle, &dc1394->camera);
00194 out_handle:
00195     dc1394_destroy_handle(dc1394->handle);
00196 out:
00197     return -1;
00198 }
00199 
00200 static int dc1394_v1_read_packet(AVFormatContext *c, AVPacket *pkt)
00201 {
00202     struct dc1394_data *dc1394 = c->priv_data;
00203     int res;
00204 
00205     /* discard stale frame */
00206     if (dc1394->current_frame++) {
00207         if (dc1394_dma_done_with_buffer(&dc1394->camera) != DC1394_SUCCESS)
00208             av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame);
00209     }
00210 
00211     res = dc1394_dma_single_capture(&dc1394->camera);
00212 
00213     if (res == DC1394_SUCCESS) {
00214         dc1394->packet.data = (uint8_t *)(dc1394->camera.capture_buffer);
00215         dc1394->packet.pts = (dc1394->current_frame * 1000000) / dc1394->fps;
00216         res = dc1394->packet.size;
00217     } else {
00218         av_log(c, AV_LOG_ERROR, "DMA capture failed\n");
00219         dc1394->packet.data = NULL;
00220         res = -1;
00221     }
00222 
00223     *pkt = dc1394->packet;
00224     return res;
00225 }
00226 
00227 static int dc1394_v1_close(AVFormatContext * context)
00228 {
00229     struct dc1394_data *dc1394 = context->priv_data;
00230 
00231     dc1394_stop_iso_transmission(dc1394->handle, dc1394->camera.node);
00232     dc1394_dma_unlisten(dc1394->handle, &dc1394->camera);
00233     dc1394_dma_release_camera(dc1394->handle, &dc1394->camera);
00234     dc1394_destroy_handle(dc1394->handle);
00235 
00236     return 0;
00237 }
00238 
00239 #elif HAVE_LIBDC1394_2
00240 static int dc1394_v2_read_header(AVFormatContext *c, AVFormatParameters * ap)
00241 {
00242     dc1394_data* dc1394 = c->priv_data;
00243     dc1394camera_list_t *list;
00244     int res, i;
00245     struct dc1394_frame_format *fmt = NULL;
00246     struct dc1394_frame_rate *fps = NULL;
00247 
00248     if (dc1394_read_common(c,ap,&fmt,&fps) != 0)
00249        return -1;
00250 
00251     /* Now let us prep the hardware. */
00252     dc1394->d = dc1394_new();
00253     dc1394_camera_enumerate (dc1394->d, &list);
00254     if ( !list || list->num == 0) {
00255         av_log(c, AV_LOG_ERROR, "Unable to look for an IIDC camera\n\n");
00256         goto out;
00257     }
00258 
00259     /* FIXME: To select a specific camera I need to search in list its guid */
00260     dc1394->camera = dc1394_camera_new (dc1394->d, list->ids[0].guid);
00261     if (list->num > 1) {
00262         av_log(c, AV_LOG_INFO, "Working with the first camera found\n");
00263     }
00264 
00265     /* Freeing list of cameras */
00266     dc1394_camera_free_list (list);
00267 
00268     /* Select MAX Speed possible from the cam */
00269     if (dc1394->camera->bmode_capable>0) {
00270        dc1394_video_set_operation_mode(dc1394->camera, DC1394_OPERATION_MODE_1394B);
00271        i = DC1394_ISO_SPEED_800;
00272     } else {
00273        i = DC1394_ISO_SPEED_400;
00274     }
00275 
00276     for (res = DC1394_FAILURE; i >= DC1394_ISO_SPEED_MIN && res != DC1394_SUCCESS; i--) {
00277             res=dc1394_video_set_iso_speed(dc1394->camera, i);
00278     }
00279     if (res != DC1394_SUCCESS) {
00280         av_log(c, AV_LOG_ERROR, "Couldn't set ISO Speed\n");
00281         goto out_camera;
00282     }
00283 
00284     if (dc1394_video_set_mode(dc1394->camera, fmt->frame_size_id) != DC1394_SUCCESS) {
00285         av_log(c, AV_LOG_ERROR, "Couldn't set video format\n");
00286         goto out_camera;
00287     }
00288 
00289     if (dc1394_video_set_framerate(dc1394->camera,fps->frame_rate_id) != DC1394_SUCCESS) {
00290         av_log(c, AV_LOG_ERROR, "Couldn't set framerate %d \n",fps->frame_rate);
00291         goto out_camera;
00292     }
00293     if (dc1394_capture_setup(dc1394->camera, 10, DC1394_CAPTURE_FLAGS_DEFAULT)!=DC1394_SUCCESS) {
00294         av_log(c, AV_LOG_ERROR, "Cannot setup camera \n");
00295         goto out_camera;
00296     }
00297 
00298     if (dc1394_video_set_transmission(dc1394->camera, DC1394_ON) !=DC1394_SUCCESS) {
00299         av_log(c, AV_LOG_ERROR, "Cannot start capture\n");
00300         goto out_camera;
00301     }
00302     return 0;
00303 
00304 out_camera:
00305     dc1394_capture_stop(dc1394->camera);
00306     dc1394_video_set_transmission(dc1394->camera, DC1394_OFF);
00307     dc1394_camera_free (dc1394->camera);
00308 out:
00309     dc1394_free(dc1394->d);
00310     return -1;
00311 }
00312 
00313 static int dc1394_v2_read_packet(AVFormatContext *c, AVPacket *pkt)
00314 {
00315     struct dc1394_data *dc1394 = c->priv_data;
00316     int res;
00317 
00318     /* discard stale frame */
00319     if (dc1394->current_frame++) {
00320         if (dc1394_capture_enqueue(dc1394->camera, dc1394->frame) != DC1394_SUCCESS)
00321             av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame);
00322     }
00323 
00324     res = dc1394_capture_dequeue(dc1394->camera, DC1394_CAPTURE_POLICY_WAIT, &dc1394->frame);
00325     if (res == DC1394_SUCCESS) {
00326         dc1394->packet.data = (uint8_t *)(dc1394->frame->image);
00327         dc1394->packet.pts = (dc1394->current_frame  * 1000000) / (dc1394->fps);
00328         res = dc1394->frame->image_bytes;
00329     } else {
00330         av_log(c, AV_LOG_ERROR, "DMA capture failed\n");
00331         dc1394->packet.data = NULL;
00332         res = -1;
00333     }
00334 
00335     *pkt = dc1394->packet;
00336     return res;
00337 }
00338 
00339 static int dc1394_v2_close(AVFormatContext * context)
00340 {
00341     struct dc1394_data *dc1394 = context->priv_data;
00342 
00343     dc1394_video_set_transmission(dc1394->camera, DC1394_OFF);
00344     dc1394_capture_stop(dc1394->camera);
00345     dc1394_camera_free(dc1394->camera);
00346     dc1394_free(dc1394->d);
00347 
00348     return 0;
00349 }
00350 
00351 AVInputFormat libdc1394_demuxer = {
00352     .name           = "libdc1394",
00353     .long_name      = NULL_IF_CONFIG_SMALL("dc1394 v.2 A/V grab"),
00354     .priv_data_size = sizeof(struct dc1394_data),
00355     .read_header    = dc1394_v2_read_header,
00356     .read_packet    = dc1394_v2_read_packet,
00357     .read_close     = dc1394_v2_close,
00358     .flags          = AVFMT_NOFILE
00359 };
00360 
00361 #endif
00362 #if HAVE_LIBDC1394_1
00363 AVInputFormat libdc1394_demuxer = {
00364     .name           = "libdc1394",
00365     .long_name      = NULL_IF_CONFIG_SMALL("dc1394 v.1 A/V grab"),
00366     .priv_data_size = sizeof(struct dc1394_data),
00367     .read_header    = dc1394_v1_read_header,
00368     .read_packet    = dc1394_v1_read_packet,
00369     .read_close     = dc1394_v1_close,
00370     .flags          = AVFMT_NOFILE
00371 };
00372 #endif