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  1. /*
  2.  * IIDC1394 grab interface (uses libdc1394 and libraw1394)
  3.  * Copyright (c) 2004 Roman Shaposhnik
  4.  * Copyright (c) 2008 Alessandro Sappia
  5.  *
  6.  * This file is part of FFmpeg.
  7.  *
  8.  * FFmpeg is free software; you can redistribute it and/or
  9.  * modify it under the terms of the GNU Lesser General Public
  10.  * License as published by the Free Software Foundation; either
  11.  * version 2.1 of the License, or (at your option) any later version.
  12.  *
  13.  * FFmpeg is distributed in the hope that it will be useful,
  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16.  * Lesser General Public License for more details.
  17.  *
  18.  * You should have received a copy of the GNU Lesser General Public
  19.  * License along with FFmpeg; if not, write to the Free Software
  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21.  */
  22.  
  23. #include "config.h"
  24. #include "libavformat/avformat.h"
  25. #include "libavformat/internal.h"
  26. #include "libavutil/log.h"
  27. #include "libavutil/mathematics.h"
  28. #include "libavutil/opt.h"
  29. #include "libavutil/parseutils.h"
  30. #include "libavutil/pixdesc.h"
  31.  
  32. #if HAVE_LIBDC1394_2
  33. #include <dc1394/dc1394.h>
  34. #elif HAVE_LIBDC1394_1
  35. #include <libraw1394/raw1394.h>
  36. #include <libdc1394/dc1394_control.h>
  37.  
  38. #define DC1394_VIDEO_MODE_320x240_YUV422 MODE_320x240_YUV422
  39. #define DC1394_VIDEO_MODE_640x480_YUV411 MODE_640x480_YUV411
  40. #define DC1394_VIDEO_MODE_640x480_YUV422 MODE_640x480_YUV422
  41. #define DC1394_FRAMERATE_1_875 FRAMERATE_1_875
  42. #define DC1394_FRAMERATE_3_75  FRAMERATE_3_75
  43. #define DC1394_FRAMERATE_7_5   FRAMERATE_7_5
  44. #define DC1394_FRAMERATE_15    FRAMERATE_15
  45. #define DC1394_FRAMERATE_30    FRAMERATE_30
  46. #define DC1394_FRAMERATE_60    FRAMERATE_60
  47. #define DC1394_FRAMERATE_120   FRAMERATE_120
  48. #define DC1394_FRAMERATE_240   FRAMERATE_240
  49. #endif
  50.  
  51. typedef struct dc1394_data {
  52.     AVClass *class;
  53. #if HAVE_LIBDC1394_1
  54.     raw1394handle_t handle;
  55.     dc1394_cameracapture camera;
  56.     int channel;
  57. #elif HAVE_LIBDC1394_2
  58.     dc1394_t *d;
  59.     dc1394camera_t *camera;
  60.     dc1394video_frame_t *frame;
  61. #endif
  62.     int current_frame;
  63.     int  frame_rate;        /**< frames per 1000 seconds (fps * 1000) */
  64.     char *video_size;       /**< String describing video size, set by a private option. */
  65.     char *pixel_format;     /**< Set by a private option. */
  66.     char *framerate;        /**< Set by a private option. */
  67.  
  68.     AVPacket packet;
  69. } dc1394_data;
  70.  
  71. struct dc1394_frame_format {
  72.     int width;
  73.     int height;
  74.     enum AVPixelFormat pix_fmt;
  75.     int frame_size_id;
  76. } dc1394_frame_formats[] = {
  77.     { 320, 240, AV_PIX_FMT_UYVY422,   DC1394_VIDEO_MODE_320x240_YUV422 },
  78.     { 640, 480, AV_PIX_FMT_UYYVYY411, DC1394_VIDEO_MODE_640x480_YUV411 },
  79.     { 640, 480, AV_PIX_FMT_UYVY422,   DC1394_VIDEO_MODE_640x480_YUV422 },
  80.     { 0, 0, 0, 0 } /* gotta be the last one */
  81. };
  82.  
  83. struct dc1394_frame_rate {
  84.     int frame_rate;
  85.     int frame_rate_id;
  86. } dc1394_frame_rates[] = {
  87.     {  1875, DC1394_FRAMERATE_1_875 },
  88.     {  3750, DC1394_FRAMERATE_3_75  },
  89.     {  7500, DC1394_FRAMERATE_7_5   },
  90.     { 15000, DC1394_FRAMERATE_15    },
  91.     { 30000, DC1394_FRAMERATE_30    },
  92.     { 60000, DC1394_FRAMERATE_60    },
  93.     {120000, DC1394_FRAMERATE_120   },
  94.     {240000, DC1394_FRAMERATE_240    },
  95.     { 0, 0 } /* gotta be the last one */
  96. };
  97.  
  98. #define OFFSET(x) offsetof(dc1394_data, x)
  99. #define DEC AV_OPT_FLAG_DECODING_PARAM
  100. static const AVOption options[] = {
  101. #if HAVE_LIBDC1394_1
  102.     { "channel", "", offsetof(dc1394_data, channel), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
  103. #endif
  104.     { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = "qvga"}, 0, 0, DEC },
  105.     { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = "uyvy422"}, 0, 0, DEC },
  106.     { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "ntsc"}, 0, 0, DEC },
  107.     { NULL },
  108. };
  109.  
  110. static const AVClass libdc1394_class = {
  111.     .class_name = "libdc1394 indev",
  112.     .item_name  = av_default_item_name,
  113.     .option     = options,
  114.     .version    = LIBAVUTIL_VERSION_INT,
  115. };
  116.  
  117.  
  118. static inline int dc1394_read_common(AVFormatContext *c,
  119.                                      struct dc1394_frame_format **select_fmt, struct dc1394_frame_rate **select_fps)
  120. {
  121.     dc1394_data* dc1394 = c->priv_data;
  122.     AVStream* vst;
  123.     struct dc1394_frame_format *fmt;
  124.     struct dc1394_frame_rate *fps;
  125.     enum AVPixelFormat pix_fmt;
  126.     int width, height;
  127.     AVRational framerate;
  128.     int ret = 0;
  129.  
  130.     if ((pix_fmt = av_get_pix_fmt(dc1394->pixel_format)) == AV_PIX_FMT_NONE) {
  131.         av_log(c, AV_LOG_ERROR, "No such pixel format: %s.\n", dc1394->pixel_format);
  132.         ret = AVERROR(EINVAL);
  133.         goto out;
  134.     }
  135.  
  136.     if ((ret = av_parse_video_size(&width, &height, dc1394->video_size)) < 0) {
  137.         av_log(c, AV_LOG_ERROR, "Could not parse video size '%s'.\n", dc1394->video_size);
  138.         goto out;
  139.     }
  140.     if ((ret = av_parse_video_rate(&framerate, dc1394->framerate)) < 0) {
  141.         av_log(c, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", dc1394->framerate);
  142.         goto out;
  143.     }
  144.     dc1394->frame_rate = av_rescale(1000, framerate.num, framerate.den);
  145.  
  146.     for (fmt = dc1394_frame_formats; fmt->width; fmt++)
  147.          if (fmt->pix_fmt == pix_fmt && fmt->width == width && fmt->height == height)
  148.              break;
  149.  
  150.     for (fps = dc1394_frame_rates; fps->frame_rate; fps++)
  151.          if (fps->frame_rate == dc1394->frame_rate)
  152.              break;
  153.  
  154.     if (!fps->frame_rate || !fmt->width) {
  155.         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),
  156.                                                                                                 width, height, dc1394->frame_rate);
  157.         ret = AVERROR(EINVAL);
  158.         goto out;
  159.     }
  160.  
  161.     /* create a video stream */
  162.     vst = avformat_new_stream(c, NULL);
  163.     if (!vst) {
  164.         ret = AVERROR(ENOMEM);
  165.         goto out;
  166.     }
  167.     avpriv_set_pts_info(vst, 64, 1, 1000);
  168.     vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
  169.     vst->codec->codec_id = AV_CODEC_ID_RAWVIDEO;
  170.     vst->codec->time_base.den = framerate.num;
  171.     vst->codec->time_base.num = framerate.den;
  172.     vst->codec->width = fmt->width;
  173.     vst->codec->height = fmt->height;
  174.     vst->codec->pix_fmt = fmt->pix_fmt;
  175.  
  176.     /* packet init */
  177.     av_init_packet(&dc1394->packet);
  178.     dc1394->packet.size = avpicture_get_size(fmt->pix_fmt, fmt->width, fmt->height);
  179.     dc1394->packet.stream_index = vst->index;
  180.     dc1394->packet.flags |= AV_PKT_FLAG_KEY;
  181.  
  182.     dc1394->current_frame = 0;
  183.  
  184.     vst->codec->bit_rate = av_rescale(dc1394->packet.size * 8, fps->frame_rate, 1000);
  185.     *select_fps = fps;
  186.     *select_fmt = fmt;
  187. out:
  188.     return ret;
  189. }
  190.  
  191. #if HAVE_LIBDC1394_1
  192. static int dc1394_v1_read_header(AVFormatContext *c)
  193. {
  194.     dc1394_data* dc1394 = c->priv_data;
  195.     AVStream* vst;
  196.     nodeid_t* camera_nodes;
  197.     int res;
  198.     struct dc1394_frame_format *fmt = NULL;
  199.     struct dc1394_frame_rate *fps = NULL;
  200.  
  201.     if (dc1394_read_common(c, &fmt, &fps) != 0)
  202.         return -1;
  203.  
  204.     /* Now let us prep the hardware. */
  205.     dc1394->handle = dc1394_create_handle(0); /* FIXME: gotta have ap->port */
  206.     if (!dc1394->handle) {
  207.         av_log(c, AV_LOG_ERROR, "Can't acquire dc1394 handle on port %d\n", 0 /* ap->port */);
  208.         goto out;
  209.     }
  210.     camera_nodes = dc1394_get_camera_nodes(dc1394->handle, &res, 1);
  211.     if (!camera_nodes || camera_nodes[dc1394->channel] == DC1394_NO_CAMERA) {
  212.         av_log(c, AV_LOG_ERROR, "There's no IIDC camera on the channel %d\n", dc1394->channel);
  213.         goto out_handle;
  214.     }
  215.     res = dc1394_dma_setup_capture(dc1394->handle, camera_nodes[dc1394->channel],
  216.                                    0,
  217.                                    FORMAT_VGA_NONCOMPRESSED,
  218.                                    fmt->frame_size_id,
  219.                                    SPEED_400,
  220.                                    fps->frame_rate_id, 8, 1,
  221.                                    c->filename,
  222.                                    &dc1394->camera);
  223.     dc1394_free_camera_nodes(camera_nodes);
  224.     if (res != DC1394_SUCCESS) {
  225.         av_log(c, AV_LOG_ERROR, "Can't prepare camera for the DMA capture\n");
  226.         goto out_handle;
  227.     }
  228.  
  229.     res = dc1394_start_iso_transmission(dc1394->handle, dc1394->camera.node);
  230.     if (res != DC1394_SUCCESS) {
  231.         av_log(c, AV_LOG_ERROR, "Can't start isochronous transmission\n");
  232.         goto out_handle_dma;
  233.     }
  234.  
  235.     return 0;
  236.  
  237. out_handle_dma:
  238.     dc1394_dma_unlisten(dc1394->handle, &dc1394->camera);
  239.     dc1394_dma_release_camera(dc1394->handle, &dc1394->camera);
  240. out_handle:
  241.     dc1394_destroy_handle(dc1394->handle);
  242. out:
  243.     return -1;
  244. }
  245.  
  246. static int dc1394_v1_read_packet(AVFormatContext *c, AVPacket *pkt)
  247. {
  248.     struct dc1394_data *dc1394 = c->priv_data;
  249.     int res;
  250.  
  251.     /* discard stale frame */
  252.     if (dc1394->current_frame++) {
  253.         if (dc1394_dma_done_with_buffer(&dc1394->camera) != DC1394_SUCCESS)
  254.             av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame);
  255.     }
  256.  
  257.     res = dc1394_dma_single_capture(&dc1394->camera);
  258.  
  259.     if (res == DC1394_SUCCESS) {
  260.         dc1394->packet.data = (uint8_t *)(dc1394->camera.capture_buffer);
  261.         dc1394->packet.pts = (dc1394->current_frame * 1000000) / dc1394->frame_rate;
  262.         res = dc1394->packet.size;
  263.     } else {
  264.         av_log(c, AV_LOG_ERROR, "DMA capture failed\n");
  265.         dc1394->packet.data = NULL;
  266.         res = -1;
  267.     }
  268.  
  269.     *pkt = dc1394->packet;
  270.     return res;
  271. }
  272.  
  273. static int dc1394_v1_close(AVFormatContext * context)
  274. {
  275.     struct dc1394_data *dc1394 = context->priv_data;
  276.  
  277.     dc1394_stop_iso_transmission(dc1394->handle, dc1394->camera.node);
  278.     dc1394_dma_unlisten(dc1394->handle, &dc1394->camera);
  279.     dc1394_dma_release_camera(dc1394->handle, &dc1394->camera);
  280.     dc1394_destroy_handle(dc1394->handle);
  281.  
  282.     return 0;
  283. }
  284.  
  285. #elif HAVE_LIBDC1394_2
  286. static int dc1394_v2_read_header(AVFormatContext *c)
  287. {
  288.     dc1394_data* dc1394 = c->priv_data;
  289.     dc1394camera_list_t *list;
  290.     int res, i;
  291.     struct dc1394_frame_format *fmt = NULL;
  292.     struct dc1394_frame_rate *fps = NULL;
  293.  
  294.     if (dc1394_read_common(c, &fmt, &fps) != 0)
  295.        return -1;
  296.  
  297.     /* Now let us prep the hardware. */
  298.     dc1394->d = dc1394_new();
  299.     dc1394_camera_enumerate (dc1394->d, &list);
  300.     if ( !list || list->num == 0) {
  301.         av_log(c, AV_LOG_ERROR, "Unable to look for an IIDC camera\n\n");
  302.         goto out;
  303.     }
  304.  
  305.     /* FIXME: To select a specific camera I need to search in list its guid */
  306.     dc1394->camera = dc1394_camera_new (dc1394->d, list->ids[0].guid);
  307.     if (list->num > 1) {
  308.         av_log(c, AV_LOG_INFO, "Working with the first camera found\n");
  309.     }
  310.  
  311.     /* Freeing list of cameras */
  312.     dc1394_camera_free_list (list);
  313.  
  314.     /* Select MAX Speed possible from the cam */
  315.     if (dc1394->camera->bmode_capable>0) {
  316.        dc1394_video_set_operation_mode(dc1394->camera, DC1394_OPERATION_MODE_1394B);
  317.        i = DC1394_ISO_SPEED_800;
  318.     } else {
  319.        i = DC1394_ISO_SPEED_400;
  320.     }
  321.  
  322.     for (res = DC1394_FAILURE; i >= DC1394_ISO_SPEED_MIN && res != DC1394_SUCCESS; i--) {
  323.             res=dc1394_video_set_iso_speed(dc1394->camera, i);
  324.     }
  325.     if (res != DC1394_SUCCESS) {
  326.         av_log(c, AV_LOG_ERROR, "Couldn't set ISO Speed\n");
  327.         goto out_camera;
  328.     }
  329.  
  330.     if (dc1394_video_set_mode(dc1394->camera, fmt->frame_size_id) != DC1394_SUCCESS) {
  331.         av_log(c, AV_LOG_ERROR, "Couldn't set video format\n");
  332.         goto out_camera;
  333.     }
  334.  
  335.     if (dc1394_video_set_framerate(dc1394->camera,fps->frame_rate_id) != DC1394_SUCCESS) {
  336.         av_log(c, AV_LOG_ERROR, "Couldn't set framerate %d \n",fps->frame_rate);
  337.         goto out_camera;
  338.     }
  339.     if (dc1394_capture_setup(dc1394->camera, 10, DC1394_CAPTURE_FLAGS_DEFAULT)!=DC1394_SUCCESS) {
  340.         av_log(c, AV_LOG_ERROR, "Cannot setup camera \n");
  341.         goto out_camera;
  342.     }
  343.  
  344.     if (dc1394_video_set_transmission(dc1394->camera, DC1394_ON) !=DC1394_SUCCESS) {
  345.         av_log(c, AV_LOG_ERROR, "Cannot start capture\n");
  346.         goto out_camera;
  347.     }
  348.     return 0;
  349.  
  350. out_camera:
  351.     dc1394_capture_stop(dc1394->camera);
  352.     dc1394_video_set_transmission(dc1394->camera, DC1394_OFF);
  353.     dc1394_camera_free (dc1394->camera);
  354. out:
  355.     dc1394_free(dc1394->d);
  356.     return -1;
  357. }
  358.  
  359. static int dc1394_v2_read_packet(AVFormatContext *c, AVPacket *pkt)
  360. {
  361.     struct dc1394_data *dc1394 = c->priv_data;
  362.     int res;
  363.  
  364.     /* discard stale frame */
  365.     if (dc1394->current_frame++) {
  366.         if (dc1394_capture_enqueue(dc1394->camera, dc1394->frame) != DC1394_SUCCESS)
  367.             av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame);
  368.     }
  369.  
  370.     res = dc1394_capture_dequeue(dc1394->camera, DC1394_CAPTURE_POLICY_WAIT, &dc1394->frame);
  371.     if (res == DC1394_SUCCESS) {
  372.         dc1394->packet.data = (uint8_t *) dc1394->frame->image;
  373.         dc1394->packet.pts  = dc1394->current_frame * 1000000 / dc1394->frame_rate;
  374.         res = dc1394->frame->image_bytes;
  375.     } else {
  376.         av_log(c, AV_LOG_ERROR, "DMA capture failed\n");
  377.         dc1394->packet.data = NULL;
  378.         res = -1;
  379.     }
  380.  
  381.     *pkt = dc1394->packet;
  382.     return res;
  383. }
  384.  
  385. static int dc1394_v2_close(AVFormatContext * context)
  386. {
  387.     struct dc1394_data *dc1394 = context->priv_data;
  388.  
  389.     dc1394_video_set_transmission(dc1394->camera, DC1394_OFF);
  390.     dc1394_capture_stop(dc1394->camera);
  391.     dc1394_camera_free(dc1394->camera);
  392.     dc1394_free(dc1394->d);
  393.  
  394.     return 0;
  395. }
  396.  
  397. AVInputFormat ff_libdc1394_demuxer = {
  398.     .name           = "libdc1394",
  399.     .long_name      = NULL_IF_CONFIG_SMALL("dc1394 v.2 A/V grab"),
  400.     .priv_data_size = sizeof(struct dc1394_data),
  401.     .read_header    = dc1394_v2_read_header,
  402.     .read_packet    = dc1394_v2_read_packet,
  403.     .read_close     = dc1394_v2_close,
  404.     .flags          = AVFMT_NOFILE,
  405.     .priv_class     = &libdc1394_class,
  406. };
  407.  
  408. #endif
  409. #if HAVE_LIBDC1394_1
  410. AVInputFormat ff_libdc1394_demuxer = {
  411.     .name           = "libdc1394",
  412.     .long_name      = NULL_IF_CONFIG_SMALL("dc1394 v.1 A/V grab"),
  413.     .priv_data_size = sizeof(struct dc1394_data),
  414.     .read_header    = dc1394_v1_read_header,
  415.     .read_packet    = dc1394_v1_read_packet,
  416.     .read_close     = dc1394_v1_close,
  417.     .flags          = AVFMT_NOFILE,
  418.     .priv_class     = &libdc1394_class,
  419. };
  420. #endif
  421.