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 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 AVPixelFormat pix_fmt;
00075     int frame_size_id;
00076 } dc1394_frame_formats[] = {
00077     { 320, 240, AV_PIX_FMT_UYVY422,   DC1394_VIDEO_MODE_320x240_YUV422 },
00078     { 640, 480, AV_PIX_FMT_UYYVYY411, DC1394_VIDEO_MODE_640x480_YUV411 },
00079     { 640, 480, AV_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), AV_OPT_TYPE_INT, {.i64 = 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), AV_OPT_TYPE_STRING, {.str = "qvga"}, 0, 0, DEC },
00105     { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = "uyvy422"}, 0, 0, DEC },
00106     { "framerate", "", OFFSET(framerate), AV_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,
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 AVPixelFormat 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)) == AV_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, "Could not parse video size '%s'.\n", dc1394->video_size);
00138         goto out;
00139     }
00140     if ((ret = av_parse_video_rate(&framerate, dc1394->framerate)) < 0) {
00141         av_log(c, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", dc1394->framerate);
00142         goto out;
00143     }
00144     dc1394->frame_rate = av_rescale(1000, framerate.num, framerate.den);
00145 
00146     for (fmt = dc1394_frame_formats; fmt->width; fmt++)
00147          if (fmt->pix_fmt == pix_fmt && fmt->width == width && fmt->height == height)
00148              break;
00149 
00150     for (fps = dc1394_frame_rates; fps->frame_rate; fps++)
00151          if (fps->frame_rate == dc1394->frame_rate)
00152              break;
00153 
00154     if (!fps->frame_rate || !fmt->width) {
00155         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),
00156                                                                                                 width, height, dc1394->frame_rate);
00157         ret = AVERROR(EINVAL);
00158         goto out;
00159     }
00160 
00161     /* create a video stream */
00162     vst = avformat_new_stream(c, NULL);
00163     if (!vst) {
00164         ret = AVERROR(ENOMEM);
00165         goto out;
00166     }
00167     avpriv_set_pts_info(vst, 64, 1, 1000);
00168     vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
00169     vst->codec->codec_id = AV_CODEC_ID_RAWVIDEO;
00170     vst->codec->time_base.den = framerate.num;
00171     vst->codec->time_base.num = framerate.den;
00172     vst->codec->width = fmt->width;
00173     vst->codec->height = fmt->height;
00174     vst->codec->pix_fmt = fmt->pix_fmt;
00175 
00176     /* packet init */
00177     av_init_packet(&dc1394->packet);
00178     dc1394->packet.size = avpicture_get_size(fmt->pix_fmt, fmt->width, fmt->height);
00179     dc1394->packet.stream_index = vst->index;
00180     dc1394->packet.flags |= AV_PKT_FLAG_KEY;
00181 
00182     dc1394->current_frame = 0;
00183 
00184     vst->codec->bit_rate = av_rescale(dc1394->packet.size * 8, fps->frame_rate, 1000);
00185     *select_fps = fps;
00186     *select_fmt = fmt;
00187 out:
00188     return ret;
00189 }
00190 
00191 #if HAVE_LIBDC1394_1
00192 static int dc1394_v1_read_header(AVFormatContext *c)
00193 {
00194     dc1394_data* dc1394 = c->priv_data;
00195     AVStream* vst;
00196     nodeid_t* camera_nodes;
00197     int res;
00198     struct dc1394_frame_format *fmt = NULL;
00199     struct dc1394_frame_rate *fps = NULL;
00200 
00201     if (dc1394_read_common(c, &fmt, &fps) != 0)
00202         return -1;
00203 
00204     /* Now let us prep the hardware. */
00205     dc1394->handle = dc1394_create_handle(0); /* FIXME: gotta have ap->port */
00206     if (!dc1394->handle) {
00207         av_log(c, AV_LOG_ERROR, "Can't acquire dc1394 handle on port %d\n", 0 /* ap->port */);
00208         goto out;
00209     }
00210     camera_nodes = dc1394_get_camera_nodes(dc1394->handle, &res, 1);
00211     if (!camera_nodes || camera_nodes[dc1394->channel] == DC1394_NO_CAMERA) {
00212         av_log(c, AV_LOG_ERROR, "There's no IIDC camera on the channel %d\n", dc1394->channel);
00213         goto out_handle;
00214     }
00215     res = dc1394_dma_setup_capture(dc1394->handle, camera_nodes[dc1394->channel],
00216                                    0,
00217                                    FORMAT_VGA_NONCOMPRESSED,
00218                                    fmt->frame_size_id,
00219                                    SPEED_400,
00220                                    fps->frame_rate_id, 8, 1,
00221                                    c->filename,
00222                                    &dc1394->camera);
00223     dc1394_free_camera_nodes(camera_nodes);
00224     if (res != DC1394_SUCCESS) {
00225         av_log(c, AV_LOG_ERROR, "Can't prepare camera for the DMA capture\n");
00226         goto out_handle;
00227     }
00228 
00229     res = dc1394_start_iso_transmission(dc1394->handle, dc1394->camera.node);
00230     if (res != DC1394_SUCCESS) {
00231         av_log(c, AV_LOG_ERROR, "Can't start isochronous transmission\n");
00232         goto out_handle_dma;
00233     }
00234 
00235     return 0;
00236 
00237 out_handle_dma:
00238     dc1394_dma_unlisten(dc1394->handle, &dc1394->camera);
00239     dc1394_dma_release_camera(dc1394->handle, &dc1394->camera);
00240 out_handle:
00241     dc1394_destroy_handle(dc1394->handle);
00242 out:
00243     return -1;
00244 }
00245 
00246 static int dc1394_v1_read_packet(AVFormatContext *c, AVPacket *pkt)
00247 {
00248     struct dc1394_data *dc1394 = c->priv_data;
00249     int res;
00250 
00251     /* discard stale frame */
00252     if (dc1394->current_frame++) {
00253         if (dc1394_dma_done_with_buffer(&dc1394->camera) != DC1394_SUCCESS)
00254             av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame);
00255     }
00256 
00257     res = dc1394_dma_single_capture(&dc1394->camera);
00258 
00259     if (res == DC1394_SUCCESS) {
00260         dc1394->packet.data = (uint8_t *)(dc1394->camera.capture_buffer);
00261         dc1394->packet.pts = (dc1394->current_frame * 1000000) / dc1394->frame_rate;
00262         res = dc1394->packet.size;
00263     } else {
00264         av_log(c, AV_LOG_ERROR, "DMA capture failed\n");
00265         dc1394->packet.data = NULL;
00266         res = -1;
00267     }
00268 
00269     *pkt = dc1394->packet;
00270     return res;
00271 }
00272 
00273 static int dc1394_v1_close(AVFormatContext * context)
00274 {
00275     struct dc1394_data *dc1394 = context->priv_data;
00276 
00277     dc1394_stop_iso_transmission(dc1394->handle, dc1394->camera.node);
00278     dc1394_dma_unlisten(dc1394->handle, &dc1394->camera);
00279     dc1394_dma_release_camera(dc1394->handle, &dc1394->camera);
00280     dc1394_destroy_handle(dc1394->handle);
00281 
00282     return 0;
00283 }
00284 
00285 #elif HAVE_LIBDC1394_2
00286 static int dc1394_v2_read_header(AVFormatContext *c)
00287 {
00288     dc1394_data* dc1394 = c->priv_data;
00289     dc1394camera_list_t *list;
00290     int res, i;
00291     struct dc1394_frame_format *fmt = NULL;
00292     struct dc1394_frame_rate *fps = NULL;
00293 
00294     if (dc1394_read_common(c, &fmt, &fps) != 0)
00295        return -1;
00296 
00297     /* Now let us prep the hardware. */
00298     dc1394->d = dc1394_new();
00299     dc1394_camera_enumerate (dc1394->d, &list);
00300     if ( !list || list->num == 0) {
00301         av_log(c, AV_LOG_ERROR, "Unable to look for an IIDC camera\n\n");
00302         goto out;
00303     }
00304 
00305     /* FIXME: To select a specific camera I need to search in list its guid */
00306     dc1394->camera = dc1394_camera_new (dc1394->d, list->ids[0].guid);
00307     if (list->num > 1) {
00308         av_log(c, AV_LOG_INFO, "Working with the first camera found\n");
00309     }
00310 
00311     /* Freeing list of cameras */
00312     dc1394_camera_free_list (list);
00313 
00314     /* Select MAX Speed possible from the cam */
00315     if (dc1394->camera->bmode_capable>0) {
00316        dc1394_video_set_operation_mode(dc1394->camera, DC1394_OPERATION_MODE_1394B);
00317        i = DC1394_ISO_SPEED_800;
00318     } else {
00319        i = DC1394_ISO_SPEED_400;
00320     }
00321 
00322     for (res = DC1394_FAILURE; i >= DC1394_ISO_SPEED_MIN && res != DC1394_SUCCESS; i--) {
00323             res=dc1394_video_set_iso_speed(dc1394->camera, i);
00324     }
00325     if (res != DC1394_SUCCESS) {
00326         av_log(c, AV_LOG_ERROR, "Couldn't set ISO Speed\n");
00327         goto out_camera;
00328     }
00329 
00330     if (dc1394_video_set_mode(dc1394->camera, fmt->frame_size_id) != DC1394_SUCCESS) {
00331         av_log(c, AV_LOG_ERROR, "Couldn't set video format\n");
00332         goto out_camera;
00333     }
00334 
00335     if (dc1394_video_set_framerate(dc1394->camera,fps->frame_rate_id) != DC1394_SUCCESS) {
00336         av_log(c, AV_LOG_ERROR, "Couldn't set framerate %d \n",fps->frame_rate);
00337         goto out_camera;
00338     }
00339     if (dc1394_capture_setup(dc1394->camera, 10, DC1394_CAPTURE_FLAGS_DEFAULT)!=DC1394_SUCCESS) {
00340         av_log(c, AV_LOG_ERROR, "Cannot setup camera \n");
00341         goto out_camera;
00342     }
00343 
00344     if (dc1394_video_set_transmission(dc1394->camera, DC1394_ON) !=DC1394_SUCCESS) {
00345         av_log(c, AV_LOG_ERROR, "Cannot start capture\n");
00346         goto out_camera;
00347     }
00348     return 0;
00349 
00350 out_camera:
00351     dc1394_capture_stop(dc1394->camera);
00352     dc1394_video_set_transmission(dc1394->camera, DC1394_OFF);
00353     dc1394_camera_free (dc1394->camera);
00354 out:
00355     dc1394_free(dc1394->d);
00356     return -1;
00357 }
00358 
00359 static int dc1394_v2_read_packet(AVFormatContext *c, AVPacket *pkt)
00360 {
00361     struct dc1394_data *dc1394 = c->priv_data;
00362     int res;
00363 
00364     /* discard stale frame */
00365     if (dc1394->current_frame++) {
00366         if (dc1394_capture_enqueue(dc1394->camera, dc1394->frame) != DC1394_SUCCESS)
00367             av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame);
00368     }
00369 
00370     res = dc1394_capture_dequeue(dc1394->camera, DC1394_CAPTURE_POLICY_WAIT, &dc1394->frame);
00371     if (res == DC1394_SUCCESS) {
00372         dc1394->packet.data = (uint8_t *) dc1394->frame->image;
00373         dc1394->packet.pts  = dc1394->current_frame * 1000000 / dc1394->frame_rate;
00374         res = dc1394->frame->image_bytes;
00375     } else {
00376         av_log(c, AV_LOG_ERROR, "DMA capture failed\n");
00377         dc1394->packet.data = NULL;
00378         res = -1;
00379     }
00380 
00381     *pkt = dc1394->packet;
00382     return res;
00383 }
00384 
00385 static int dc1394_v2_close(AVFormatContext * context)
00386 {
00387     struct dc1394_data *dc1394 = context->priv_data;
00388 
00389     dc1394_video_set_transmission(dc1394->camera, DC1394_OFF);
00390     dc1394_capture_stop(dc1394->camera);
00391     dc1394_camera_free(dc1394->camera);
00392     dc1394_free(dc1394->d);
00393 
00394     return 0;
00395 }
00396 
00397 AVInputFormat ff_libdc1394_demuxer = {
00398     .name           = "libdc1394",
00399     .long_name      = NULL_IF_CONFIG_SMALL("dc1394 v.2 A/V grab"),
00400     .priv_data_size = sizeof(struct dc1394_data),
00401     .read_header    = dc1394_v2_read_header,
00402     .read_packet    = dc1394_v2_read_packet,
00403     .read_close     = dc1394_v2_close,
00404     .flags          = AVFMT_NOFILE,
00405     .priv_class     = &libdc1394_class,
00406 };
00407 
00408 #endif
00409 #if HAVE_LIBDC1394_1
00410 AVInputFormat ff_libdc1394_demuxer = {
00411     .name           = "libdc1394",
00412     .long_name      = NULL_IF_CONFIG_SMALL("dc1394 v.1 A/V grab"),
00413     .priv_data_size = sizeof(struct dc1394_data),
00414     .read_header    = dc1394_v1_read_header,
00415     .read_packet    = dc1394_v1_read_packet,
00416     .read_close     = dc1394_v1_close,
00417     .flags          = AVFMT_NOFILE,
00418     .priv_class     = &libdc1394_class,
00419 };
00420 #endif