/* * IIDC1394 grab interface (uses libdc1394 and libraw1394) * Copyright (c) 2004 Roman Shaposhnik * Copyright (c) 2008 Alessandro Sappia * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include <dc1394/dc1394.h> #include "libavutil/imgutils.h" #include "libavutil/internal.h" #include "libavutil/log.h" #include "libavutil/mathematics.h" #include "libavutil/opt.h" #include "libavutil/parseutils.h" #include "libavutil/pixdesc.h" #include "libavformat/avformat.h" #include "libavformat/internal.h" typedef struct dc1394_data { AVClass *class; dc1394_t *d; dc1394camera_t *camera; dc1394video_frame_t *frame; int current_frame; int frame_rate; /**< frames per 1000 seconds (fps * 1000) */ char *video_size; /**< String describing video size, set by a private option. */ char *pixel_format; /**< Set by a private option. */ char *framerate; /**< Set by a private option. */ int size; int stream_index; } dc1394_data; static const struct dc1394_frame_format { int width; int height; enum AVPixelFormat pix_fmt; int frame_size_id; } dc1394_frame_formats[] = { { 320, 240, AV_PIX_FMT_UYVY422, DC1394_VIDEO_MODE_320x240_YUV422 }, { 640, 480, AV_PIX_FMT_GRAY8, DC1394_VIDEO_MODE_640x480_MONO8 }, { 640, 480, AV_PIX_FMT_UYYVYY411, DC1394_VIDEO_MODE_640x480_YUV411 }, { 640, 480, AV_PIX_FMT_UYVY422, DC1394_VIDEO_MODE_640x480_YUV422 }, { 0, 0, 0, 0 } /* gotta be the last one */ }; static const struct dc1394_frame_rate { int frame_rate; int frame_rate_id; } dc1394_frame_rates[] = { { 1875, DC1394_FRAMERATE_1_875 }, { 3750, DC1394_FRAMERATE_3_75 }, { 7500, DC1394_FRAMERATE_7_5 }, { 15000, DC1394_FRAMERATE_15 }, { 30000, DC1394_FRAMERATE_30 }, { 60000, DC1394_FRAMERATE_60 }, {120000, DC1394_FRAMERATE_120 }, {240000, DC1394_FRAMERATE_240 }, { 0, 0 } /* gotta be the last one */ }; #define OFFSET(x) offsetof(dc1394_data, x) #define DEC AV_OPT_FLAG_DECODING_PARAM static const AVOption options[] = { { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = "qvga"}, 0, 0, DEC }, { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = "uyvy422"}, 0, 0, DEC }, { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "ntsc"}, 0, 0, DEC }, { NULL }, }; static const AVClass libdc1394_class = { .class_name = "libdc1394 indev", .item_name = av_default_item_name, .option = options, .version = LIBAVUTIL_VERSION_INT, .category = AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT, }; static inline int dc1394_read_common(AVFormatContext *c, const struct dc1394_frame_format **select_fmt, const struct dc1394_frame_rate **select_fps) { dc1394_data* dc1394 = c->priv_data; AVStream* vst; const struct dc1394_frame_format *fmt; const struct dc1394_frame_rate *fps; enum AVPixelFormat pix_fmt; int width, height; AVRational framerate; int ret = 0; if ((pix_fmt = av_get_pix_fmt(dc1394->pixel_format)) == AV_PIX_FMT_NONE) { av_log(c, AV_LOG_ERROR, "No such pixel format: %s.\n", dc1394->pixel_format); ret = AVERROR(EINVAL); goto out; } if ((ret = av_parse_video_size(&width, &height, dc1394->video_size)) < 0) { av_log(c, AV_LOG_ERROR, "Could not parse video size '%s'.\n", dc1394->video_size); goto out; } if ((ret = av_parse_video_rate(&framerate, dc1394->framerate)) < 0) { av_log(c, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", dc1394->framerate); goto out; } dc1394->frame_rate = av_rescale(1000, framerate.num, framerate.den); for (fmt = dc1394_frame_formats; fmt->width; fmt++) if (fmt->pix_fmt == pix_fmt && fmt->width == width && fmt->height == height) break; for (fps = dc1394_frame_rates; fps->frame_rate; fps++) if (fps->frame_rate == dc1394->frame_rate) break; if (!fps->frame_rate || !fmt->width) { 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), width, height, dc1394->frame_rate); ret = AVERROR(EINVAL); goto out; } /* create a video stream */ vst = avformat_new_stream(c, NULL); if (!vst) { ret = AVERROR(ENOMEM); goto out; } avpriv_set_pts_info(vst, 64, 1, 1000); vst->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; vst->codecpar->codec_id = AV_CODEC_ID_RAWVIDEO; vst->codecpar->width = fmt->width; vst->codecpar->height = fmt->height; vst->codecpar->format = fmt->pix_fmt; vst->avg_frame_rate = framerate; dc1394->current_frame = 0; dc1394->stream_index = vst->index; dc1394->size = av_image_get_buffer_size(fmt->pix_fmt, fmt->width, fmt->height, 1); vst->codecpar->bit_rate = av_rescale(dc1394->size * 8, fps->frame_rate, 1000); *select_fps = fps; *select_fmt = fmt; out: return ret; } static int dc1394_read_header(AVFormatContext *c) { dc1394_data* dc1394 = c->priv_data; dc1394camera_list_t *list; int res, i; const struct dc1394_frame_format *fmt = NULL; const struct dc1394_frame_rate *fps = NULL; if (dc1394_read_common(c, &fmt, &fps) != 0) return -1; /* Now let us prep the hardware. */ dc1394->d = dc1394_new(); if (dc1394_camera_enumerate(dc1394->d, &list) != DC1394_SUCCESS || !list) { av_log(c, AV_LOG_ERROR, "Unable to look for an IIDC camera.\n"); goto out; } if (list->num == 0) { av_log(c, AV_LOG_ERROR, "No cameras found.\n"); dc1394_camera_free_list(list); goto out; } /* FIXME: To select a specific camera I need to search in list its guid */ dc1394->camera = dc1394_camera_new (dc1394->d, list->ids[0].guid); if (!dc1394->camera) { av_log(c, AV_LOG_ERROR, "Unable to open camera with guid 0x%"PRIx64"\n", list->ids[0].guid); dc1394_camera_free_list(list); goto out; } if (list->num > 1) { av_log(c, AV_LOG_INFO, "Working with the first camera found\n"); } /* Freeing list of cameras */ dc1394_camera_free_list (list); /* Select MAX Speed possible from the cam */ if (dc1394->camera->bmode_capable>0) { dc1394_video_set_operation_mode(dc1394->camera, DC1394_OPERATION_MODE_1394B); i = DC1394_ISO_SPEED_800; } else { i = DC1394_ISO_SPEED_400; } for (res = DC1394_FAILURE; i >= DC1394_ISO_SPEED_MIN && res != DC1394_SUCCESS; i--) { res=dc1394_video_set_iso_speed(dc1394->camera, i); } if (res != DC1394_SUCCESS) { av_log(c, AV_LOG_ERROR, "Couldn't set ISO Speed\n"); goto out_camera; } if (dc1394_video_set_mode(dc1394->camera, fmt->frame_size_id) != DC1394_SUCCESS) { av_log(c, AV_LOG_ERROR, "Couldn't set video format\n"); goto out_camera; } if (dc1394_video_set_framerate(dc1394->camera,fps->frame_rate_id) != DC1394_SUCCESS) { av_log(c, AV_LOG_ERROR, "Couldn't set framerate %d \n",fps->frame_rate); goto out_camera; } if (dc1394_capture_setup(dc1394->camera, 10, DC1394_CAPTURE_FLAGS_DEFAULT)!=DC1394_SUCCESS) { av_log(c, AV_LOG_ERROR, "Cannot setup camera \n"); goto out_camera; } if (dc1394_video_set_transmission(dc1394->camera, DC1394_ON) !=DC1394_SUCCESS) { av_log(c, AV_LOG_ERROR, "Cannot start capture\n"); goto out_camera; } return 0; out_camera: dc1394_capture_stop(dc1394->camera); dc1394_video_set_transmission(dc1394->camera, DC1394_OFF); dc1394_camera_free (dc1394->camera); out: dc1394_free(dc1394->d); return -1; } static int dc1394_read_packet(AVFormatContext *c, AVPacket *pkt) { struct dc1394_data *dc1394 = c->priv_data; int res; /* discard stale frame */ if (dc1394->current_frame++) { if (dc1394_capture_enqueue(dc1394->camera, dc1394->frame) != DC1394_SUCCESS) av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame); } res = dc1394_capture_dequeue(dc1394->camera, DC1394_CAPTURE_POLICY_WAIT, &dc1394->frame); if (res == DC1394_SUCCESS) { pkt->data = (uint8_t *)dc1394->frame->image; pkt->size = dc1394->frame->image_bytes; pkt->pts = dc1394->current_frame * 1000000 / dc1394->frame_rate; pkt->flags |= AV_PKT_FLAG_KEY; pkt->stream_index = dc1394->stream_index; } else { av_log(c, AV_LOG_ERROR, "DMA capture failed\n"); return AVERROR_INVALIDDATA; } return pkt->size; } static int dc1394_close(AVFormatContext * context) { struct dc1394_data *dc1394 = context->priv_data; dc1394_video_set_transmission(dc1394->camera, DC1394_OFF); dc1394_capture_stop(dc1394->camera); dc1394_camera_free(dc1394->camera); dc1394_free(dc1394->d); return 0; } AVInputFormat ff_libdc1394_demuxer = { .name = "libdc1394", .long_name = NULL_IF_CONFIG_SMALL("dc1394 v.2 A/V grab"), .priv_data_size = sizeof(struct dc1394_data), .read_header = dc1394_read_header, .read_packet = dc1394_read_packet, .read_close = dc1394_close, .flags = AVFMT_NOFILE, .priv_class = &libdc1394_class, };