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 #include "libavformat/internal.h"
00026 #include "libavutil/log.h"
00027 #include "libavutil/mathematics.h"
00028 #include "libavutil/opt.h"
00029 #include "libavutil/parseutils.h"
00030 #include "libavutil/pixdesc.h"
00031 
00032 #if HAVE_LIBDC1394_2
00033 #include <dc1394/dc1394.h>
00034 #elif HAVE_LIBDC1394_1
00035 #include <libraw1394/raw1394.h>
00036 #include <libdc1394/dc1394_control.h>
00037 
00038 #define DC1394_VIDEO_MODE_320x240_YUV422 MODE_320x240_YUV422
00039 #define DC1394_VIDEO_MODE_640x480_YUV411 MODE_640x480_YUV411
00040 #define DC1394_VIDEO_MODE_640x480_YUV422 MODE_640x480_YUV422
00041 #define DC1394_FRAMERATE_1_875 FRAMERATE_1_875
00042 #define DC1394_FRAMERATE_3_75  FRAMERATE_3_75
00043 #define DC1394_FRAMERATE_7_5   FRAMERATE_7_5
00044 #define DC1394_FRAMERATE_15    FRAMERATE_15
00045 #define DC1394_FRAMERATE_30    FRAMERATE_30
00046 #define DC1394_FRAMERATE_60    FRAMERATE_60
00047 #define DC1394_FRAMERATE_120   FRAMERATE_120
00048 #define DC1394_FRAMERATE_240   FRAMERATE_240
00049 #endif
00050 
00051 #undef free
00052 
00053 typedef struct dc1394_data {
00054     AVClass *class;
00055 #if HAVE_LIBDC1394_1
00056     raw1394handle_t handle;
00057     dc1394_cameracapture camera;
00058     int channel;
00059 #elif HAVE_LIBDC1394_2
00060     dc1394_t *d;
00061     dc1394camera_t *camera;
00062     dc1394video_frame_t *frame;
00063 #endif
00064     int current_frame;
00065     int  frame_rate;        
00066     char *video_size;       
00067     char *pixel_format;     
00068     char *framerate;        
00070     AVPacket packet;
00071 } dc1394_data;
00072 
00073 struct dc1394_frame_format {
00074     int width;
00075     int height;
00076     enum PixelFormat pix_fmt;
00077     int frame_size_id;
00078 } dc1394_frame_formats[] = {
00079     { 320, 240, PIX_FMT_UYVY422, DC1394_VIDEO_MODE_320x240_YUV422 },
00080     { 640, 480, PIX_FMT_UYYVYY411, DC1394_VIDEO_MODE_640x480_YUV411 },
00081     { 640, 480, PIX_FMT_UYVY422, DC1394_VIDEO_MODE_640x480_YUV422 },
00082     { 0, 0, 0, 0 } /* gotta be the last one */
00083 };
00084 
00085 struct dc1394_frame_rate {
00086     int frame_rate;
00087     int frame_rate_id;
00088 } dc1394_frame_rates[] = {
00089     {  1875, DC1394_FRAMERATE_1_875 },
00090     {  3750, DC1394_FRAMERATE_3_75  },
00091     {  7500, DC1394_FRAMERATE_7_5   },
00092     { 15000, DC1394_FRAMERATE_15    },
00093     { 30000, DC1394_FRAMERATE_30    },
00094     { 60000, DC1394_FRAMERATE_60    },
00095     {120000, DC1394_FRAMERATE_120   },
00096     {240000, DC1394_FRAMERATE_240    },
00097     { 0, 0 } /* gotta be the last one */
00098 };
00099 
00100 #define OFFSET(x) offsetof(dc1394_data, x)
00101 #define DEC AV_OPT_FLAG_DECODING_PARAM
00102 static const AVOption options[] = {
00103 #if HAVE_LIBDC1394_1
00104     { "channel", "", offsetof(dc1394_data, channel), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
00105 #endif
00106     { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = "qvga"}, 0, 0, DEC },
00107     { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = "uyvy422"}, 0, 0, DEC },
00108     { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "ntsc"}, 0, 0, DEC },
00109     { NULL },
00110 };
00111 
00112 static const AVClass libdc1394_class = {
00113     .class_name = "libdc1394 indev",
00114     .item_name  = av_default_item_name,
00115     .option     = options,
00116     .version    = LIBAVUTIL_VERSION_INT,
00117 };
00118 
00119 
00120 static inline int dc1394_read_common(AVFormatContext *c,
00121                                      struct dc1394_frame_format **select_fmt, struct dc1394_frame_rate **select_fps)
00122 {
00123     dc1394_data* dc1394 = c->priv_data;
00124     AVStream* vst;
00125     struct dc1394_frame_format *fmt;
00126     struct dc1394_frame_rate *fps;
00127     enum PixelFormat pix_fmt;
00128     int width, height;
00129     AVRational framerate;
00130     int ret = 0;
00131 
00132     if ((pix_fmt = av_get_pix_fmt(dc1394->pixel_format)) == PIX_FMT_NONE) {
00133         av_log(c, AV_LOG_ERROR, "No such pixel format: %s.\n", dc1394->pixel_format);
00134         ret = AVERROR(EINVAL);
00135         goto out;
00136     }
00137 
00138     if ((ret = av_parse_video_size(&width, &height, dc1394->video_size)) < 0) {
00139         av_log(c, AV_LOG_ERROR, "Could not parse video size '%s'.\n", dc1394->video_size);
00140         goto out;
00141     }
00142     if ((ret = av_parse_video_rate(&framerate, dc1394->framerate)) < 0) {
00143         av_log(c, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", dc1394->framerate);
00144         goto out;
00145     }
00146     dc1394->frame_rate = av_rescale(1000, framerate.num, framerate.den);
00147 
00148     for (fmt = dc1394_frame_formats; fmt->width; fmt++)
00149          if (fmt->pix_fmt == pix_fmt && fmt->width == width && fmt->height == height)
00150              break;
00151 
00152     for (fps = dc1394_frame_rates; fps->frame_rate; fps++)
00153          if (fps->frame_rate == dc1394->frame_rate)
00154              break;
00155 
00156     if (!fps->frame_rate || !fmt->width) {
00157         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),
00158                                                                                                 width, height, dc1394->frame_rate);
00159         ret = AVERROR(EINVAL);
00160         goto out;
00161     }
00162 
00163     /* create a video stream */
00164     vst = avformat_new_stream(c, NULL);
00165     if (!vst) {
00166         ret = AVERROR(ENOMEM);
00167         goto out;
00168     }
00169     avpriv_set_pts_info(vst, 64, 1, 1000);
00170     vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
00171     vst->codec->codec_id = AV_CODEC_ID_RAWVIDEO;
00172     vst->codec->time_base.den = framerate.num;
00173     vst->codec->time_base.num = framerate.den;
00174     vst->codec->width = fmt->width;
00175     vst->codec->height = fmt->height;
00176     vst->codec->pix_fmt = fmt->pix_fmt;
00177 
00178     /* packet init */
00179     av_init_packet(&dc1394->packet);
00180     dc1394->packet.size = avpicture_get_size(fmt->pix_fmt, fmt->width, fmt->height);
00181     dc1394->packet.stream_index = vst->index;
00182     dc1394->packet.flags |= AV_PKT_FLAG_KEY;
00183 
00184     dc1394->current_frame = 0;
00185 
00186     vst->codec->bit_rate = av_rescale(dc1394->packet.size * 8, fps->frame_rate, 1000);
00187     *select_fps = fps;
00188     *select_fmt = fmt;
00189 out:
00190     return ret;
00191 }
00192 
00193 #if HAVE_LIBDC1394_1
00194 static int dc1394_v1_read_header(AVFormatContext *c)
00195 {
00196     dc1394_data* dc1394 = c->priv_data;
00197     AVStream* vst;
00198     nodeid_t* camera_nodes;
00199     int res;
00200     struct dc1394_frame_format *fmt = NULL;
00201     struct dc1394_frame_rate *fps = NULL;
00202 
00203     if (dc1394_read_common(c, &fmt, &fps) != 0)
00204         return -1;
00205 
00206     /* Now let us prep the hardware. */
00207     dc1394->handle = dc1394_create_handle(0); /* FIXME: gotta have ap->port */
00208     if (!dc1394->handle) {
00209         av_log(c, AV_LOG_ERROR, "Can't acquire dc1394 handle on port %d\n", 0 /* ap->port */);
00210         goto out;
00211     }
00212     camera_nodes = dc1394_get_camera_nodes(dc1394->handle, &res, 1);
00213     if (!camera_nodes || camera_nodes[dc1394->channel] == DC1394_NO_CAMERA) {
00214         av_log(c, AV_LOG_ERROR, "There's no IIDC camera on the channel %d\n", dc1394->channel);
00215         goto out_handle;
00216     }
00217     res = dc1394_dma_setup_capture(dc1394->handle, camera_nodes[dc1394->channel],
00218                                    0,
00219                                    FORMAT_VGA_NONCOMPRESSED,
00220                                    fmt->frame_size_id,
00221                                    SPEED_400,
00222                                    fps->frame_rate_id, 8, 1,
00223                                    c->filename,
00224                                    &dc1394->camera);
00225     dc1394_free_camera_nodes(camera_nodes);
00226     if (res != DC1394_SUCCESS) {
00227         av_log(c, AV_LOG_ERROR, "Can't prepare camera for the DMA capture\n");
00228         goto out_handle;
00229     }
00230 
00231     res = dc1394_start_iso_transmission(dc1394->handle, dc1394->camera.node);
00232     if (res != DC1394_SUCCESS) {
00233         av_log(c, AV_LOG_ERROR, "Can't start isochronous transmission\n");
00234         goto out_handle_dma;
00235     }
00236 
00237     return 0;
00238 
00239 out_handle_dma:
00240     dc1394_dma_unlisten(dc1394->handle, &dc1394->camera);
00241     dc1394_dma_release_camera(dc1394->handle, &dc1394->camera);
00242 out_handle:
00243     dc1394_destroy_handle(dc1394->handle);
00244 out:
00245     return -1;
00246 }
00247 
00248 static int dc1394_v1_read_packet(AVFormatContext *c, AVPacket *pkt)
00249 {
00250     struct dc1394_data *dc1394 = c->priv_data;
00251     int res;
00252 
00253     /* discard stale frame */
00254     if (dc1394->current_frame++) {
00255         if (dc1394_dma_done_with_buffer(&dc1394->camera) != DC1394_SUCCESS)
00256             av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame);
00257     }
00258 
00259     res = dc1394_dma_single_capture(&dc1394->camera);
00260 
00261     if (res == DC1394_SUCCESS) {
00262         dc1394->packet.data = (uint8_t *)(dc1394->camera.capture_buffer);
00263         dc1394->packet.pts = (dc1394->current_frame * 1000000) / dc1394->frame_rate;
00264         res = dc1394->packet.size;
00265     } else {
00266         av_log(c, AV_LOG_ERROR, "DMA capture failed\n");
00267         dc1394->packet.data = NULL;
00268         res = -1;
00269     }
00270 
00271     *pkt = dc1394->packet;
00272     return res;
00273 }
00274 
00275 static int dc1394_v1_close(AVFormatContext * context)
00276 {
00277     struct dc1394_data *dc1394 = context->priv_data;
00278 
00279     dc1394_stop_iso_transmission(dc1394->handle, dc1394->camera.node);
00280     dc1394_dma_unlisten(dc1394->handle, &dc1394->camera);
00281     dc1394_dma_release_camera(dc1394->handle, &dc1394->camera);
00282     dc1394_destroy_handle(dc1394->handle);
00283 
00284     return 0;
00285 }
00286 
00287 #elif HAVE_LIBDC1394_2
00288 static int dc1394_v2_read_header(AVFormatContext *c)
00289 {
00290     dc1394_data* dc1394 = c->priv_data;
00291     dc1394camera_list_t *list;
00292     int res, i;
00293     struct dc1394_frame_format *fmt = NULL;
00294     struct dc1394_frame_rate *fps = NULL;
00295 
00296     if (dc1394_read_common(c, &fmt, &fps) != 0)
00297        return -1;
00298 
00299     /* Now let us prep the hardware. */
00300     dc1394->d = dc1394_new();
00301     dc1394_camera_enumerate (dc1394->d, &list);
00302     if ( !list || list->num == 0) {
00303         av_log(c, AV_LOG_ERROR, "Unable to look for an IIDC camera\n\n");
00304         goto out;
00305     }
00306 
00307     /* FIXME: To select a specific camera I need to search in list its guid */
00308     dc1394->camera = dc1394_camera_new (dc1394->d, list->ids[0].guid);
00309     if (list->num > 1) {
00310         av_log(c, AV_LOG_INFO, "Working with the first camera found\n");
00311     }
00312 
00313     /* Freeing list of cameras */
00314     dc1394_camera_free_list (list);
00315 
00316     /* Select MAX Speed possible from the cam */
00317     if (dc1394->camera->bmode_capable>0) {
00318        dc1394_video_set_operation_mode(dc1394->camera, DC1394_OPERATION_MODE_1394B);
00319        i = DC1394_ISO_SPEED_800;
00320     } else {
00321        i = DC1394_ISO_SPEED_400;
00322     }
00323 
00324     for (res = DC1394_FAILURE; i >= DC1394_ISO_SPEED_MIN && res != DC1394_SUCCESS; i--) {
00325             res=dc1394_video_set_iso_speed(dc1394->camera, i);
00326     }
00327     if (res != DC1394_SUCCESS) {
00328         av_log(c, AV_LOG_ERROR, "Couldn't set ISO Speed\n");
00329         goto out_camera;
00330     }
00331 
00332     if (dc1394_video_set_mode(dc1394->camera, fmt->frame_size_id) != DC1394_SUCCESS) {
00333         av_log(c, AV_LOG_ERROR, "Couldn't set video format\n");
00334         goto out_camera;
00335     }
00336 
00337     if (dc1394_video_set_framerate(dc1394->camera,fps->frame_rate_id) != DC1394_SUCCESS) {
00338         av_log(c, AV_LOG_ERROR, "Couldn't set framerate %d \n",fps->frame_rate);
00339         goto out_camera;
00340     }
00341     if (dc1394_capture_setup(dc1394->camera, 10, DC1394_CAPTURE_FLAGS_DEFAULT)!=DC1394_SUCCESS) {
00342         av_log(c, AV_LOG_ERROR, "Cannot setup camera \n");
00343         goto out_camera;
00344     }
00345 
00346     if (dc1394_video_set_transmission(dc1394->camera, DC1394_ON) !=DC1394_SUCCESS) {
00347         av_log(c, AV_LOG_ERROR, "Cannot start capture\n");
00348         goto out_camera;
00349     }
00350     return 0;
00351 
00352 out_camera:
00353     dc1394_capture_stop(dc1394->camera);
00354     dc1394_video_set_transmission(dc1394->camera, DC1394_OFF);
00355     dc1394_camera_free (dc1394->camera);
00356 out:
00357     dc1394_free(dc1394->d);
00358     return -1;
00359 }
00360 
00361 static int dc1394_v2_read_packet(AVFormatContext *c, AVPacket *pkt)
00362 {
00363     struct dc1394_data *dc1394 = c->priv_data;
00364     int res;
00365 
00366     /* discard stale frame */
00367     if (dc1394->current_frame++) {
00368         if (dc1394_capture_enqueue(dc1394->camera, dc1394->frame) != DC1394_SUCCESS)
00369             av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame);
00370     }
00371 
00372     res = dc1394_capture_dequeue(dc1394->camera, DC1394_CAPTURE_POLICY_WAIT, &dc1394->frame);
00373     if (res == DC1394_SUCCESS) {
00374         dc1394->packet.data = (uint8_t *) dc1394->frame->image;
00375         dc1394->packet.pts  = dc1394->current_frame * 1000000 / dc1394->frame_rate;
00376         res = dc1394->frame->image_bytes;
00377     } else {
00378         av_log(c, AV_LOG_ERROR, "DMA capture failed\n");
00379         dc1394->packet.data = NULL;
00380         res = -1;
00381     }
00382 
00383     *pkt = dc1394->packet;
00384     return res;
00385 }
00386 
00387 static int dc1394_v2_close(AVFormatContext * context)
00388 {
00389     struct dc1394_data *dc1394 = context->priv_data;
00390 
00391     dc1394_video_set_transmission(dc1394->camera, DC1394_OFF);
00392     dc1394_capture_stop(dc1394->camera);
00393     dc1394_camera_free(dc1394->camera);
00394     dc1394_free(dc1394->d);
00395 
00396     return 0;
00397 }
00398 
00399 AVInputFormat ff_libdc1394_demuxer = {
00400     .name           = "libdc1394",
00401     .long_name      = NULL_IF_CONFIG_SMALL("dc1394 v.2 A/V grab"),
00402     .priv_data_size = sizeof(struct dc1394_data),
00403     .read_header    = dc1394_v2_read_header,
00404     .read_packet    = dc1394_v2_read_packet,
00405     .read_close     = dc1394_v2_close,
00406     .flags          = AVFMT_NOFILE,
00407     .priv_class     = &libdc1394_class,
00408 };
00409 
00410 #endif
00411 #if HAVE_LIBDC1394_1
00412 AVInputFormat ff_libdc1394_demuxer = {
00413     .name           = "libdc1394",
00414     .long_name      = NULL_IF_CONFIG_SMALL("dc1394 v.1 A/V grab"),
00415     .priv_data_size = sizeof(struct dc1394_data),
00416     .read_header    = dc1394_v1_read_header,
00417     .read_packet    = dc1394_v1_read_packet,
00418     .read_close     = dc1394_v1_close,
00419     .flags          = AVFMT_NOFILE,
00420     .priv_class     = &libdc1394_class,
00421 };
00422 #endif