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 Libav.
7 *
8 * Libav 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 * Libav 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 Libav; 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#undef free
52
53typedef struct dc1394_data {
54    AVClass *class;
55#if HAVE_LIBDC1394_1
56    raw1394handle_t handle;
57    dc1394_cameracapture camera;
58    int channel;
59#elif HAVE_LIBDC1394_2
60    dc1394_t *d;
61    dc1394camera_t *camera;
62    dc1394video_frame_t *frame;
63#endif
64    int current_frame;
65    int  frame_rate;        /**< frames per 1000 seconds (fps * 1000) */
66    char *video_size;       /**< String describing video size, set by a private option. */
67    char *pixel_format;     /**< Set by a private option. */
68    char *framerate;        /**< Set by a private option. */
69
70    AVPacket packet;
71} dc1394_data;
72
73struct dc1394_frame_format {
74    int width;
75    int height;
76    enum PixelFormat pix_fmt;
77    int frame_size_id;
78} dc1394_frame_formats[] = {
79    { 320, 240, PIX_FMT_UYVY422, DC1394_VIDEO_MODE_320x240_YUV422 },
80    { 640, 480, PIX_FMT_UYYVYY411, DC1394_VIDEO_MODE_640x480_YUV411 },
81    { 640, 480, PIX_FMT_UYVY422, DC1394_VIDEO_MODE_640x480_YUV422 },
82    { 0, 0, 0, 0 } /* gotta be the last one */
83};
84
85struct dc1394_frame_rate {
86    int frame_rate;
87    int frame_rate_id;
88} dc1394_frame_rates[] = {
89    {  1875, DC1394_FRAMERATE_1_875 },
90    {  3750, DC1394_FRAMERATE_3_75  },
91    {  7500, DC1394_FRAMERATE_7_5   },
92    { 15000, DC1394_FRAMERATE_15    },
93    { 30000, DC1394_FRAMERATE_30    },
94    { 60000, DC1394_FRAMERATE_60    },
95    {120000, DC1394_FRAMERATE_120   },
96    {240000, DC1394_FRAMERATE_240    },
97    { 0, 0 } /* gotta be the last one */
98};
99
100#define OFFSET(x) offsetof(dc1394_data, x)
101#define DEC AV_OPT_FLAG_DECODING_PARAM
102static const AVOption options[] = {
103#if HAVE_LIBDC1394_1
104    { "channel", "", offsetof(dc1394_data, channel), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
105#endif
106    { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = "qvga"}, 0, 0, DEC },
107    { "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = "uyvy422"}, 0, 0, DEC },
108    { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "ntsc"}, 0, 0, DEC },
109    { NULL },
110};
111
112static const AVClass libdc1394_class = {
113    .class_name = "libdc1394 indev",
114    .item_name  = av_default_item_name,
115    .option     = options,
116    .version    = LIBAVUTIL_VERSION_INT,
117};
118
119
120static inline int dc1394_read_common(AVFormatContext *c, AVFormatParameters *ap,
121                                     struct dc1394_frame_format **select_fmt, struct dc1394_frame_rate **select_fps)
122{
123    dc1394_data* dc1394 = c->priv_data;
124    AVStream* vst;
125    struct dc1394_frame_format *fmt;
126    struct dc1394_frame_rate *fps;
127    enum PixelFormat pix_fmt;
128    int width, height;
129    AVRational framerate;
130    int ret = 0;
131
132    if ((pix_fmt = av_get_pix_fmt(dc1394->pixel_format)) == PIX_FMT_NONE) {
133        av_log(c, AV_LOG_ERROR, "No such pixel format: %s.\n", dc1394->pixel_format);
134        ret = AVERROR(EINVAL);
135        goto out;
136    }
137
138    if ((ret = av_parse_video_size(&width, &height, dc1394->video_size)) < 0) {
139        av_log(c, AV_LOG_ERROR, "Could not parse video size '%s'.\n", dc1394->video_size);
140        goto out;
141    }
142    if ((ret = av_parse_video_rate(&framerate, dc1394->framerate)) < 0) {
143        av_log(c, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", dc1394->framerate);
144        goto out;
145    }
146    dc1394->frame_rate = av_rescale(1000, framerate.num, framerate.den);
147
148    for (fmt = dc1394_frame_formats; fmt->width; fmt++)
149         if (fmt->pix_fmt == pix_fmt && fmt->width == width && fmt->height == height)
150             break;
151
152    for (fps = dc1394_frame_rates; fps->frame_rate; fps++)
153         if (fps->frame_rate == dc1394->frame_rate)
154             break;
155
156    if (!fps->frame_rate || !fmt->width) {
157        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),
158                                                                                                width, height, dc1394->frame_rate);
159        ret = AVERROR(EINVAL);
160        goto out;
161    }
162
163    /* create a video stream */
164    vst = avformat_new_stream(c, NULL);
165    if (!vst) {
166        ret = AVERROR(ENOMEM);
167        goto out;
168    }
169    avpriv_set_pts_info(vst, 64, 1, 1000);
170    vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
171    vst->codec->codec_id = CODEC_ID_RAWVIDEO;
172    vst->codec->time_base.den = framerate.num;
173    vst->codec->time_base.num = framerate.den;
174    vst->codec->width = fmt->width;
175    vst->codec->height = fmt->height;
176    vst->codec->pix_fmt = fmt->pix_fmt;
177
178    /* packet init */
179    av_init_packet(&dc1394->packet);
180    dc1394->packet.size = avpicture_get_size(fmt->pix_fmt, fmt->width, fmt->height);
181    dc1394->packet.stream_index = vst->index;
182    dc1394->packet.flags |= AV_PKT_FLAG_KEY;
183
184    dc1394->current_frame = 0;
185
186    vst->codec->bit_rate = av_rescale(dc1394->packet.size * 8, fps->frame_rate, 1000);
187    *select_fps = fps;
188    *select_fmt = fmt;
189out:
190    return ret;
191}
192
193#if HAVE_LIBDC1394_1
194static int dc1394_v1_read_header(AVFormatContext *c, AVFormatParameters * ap)
195{
196    dc1394_data* dc1394 = c->priv_data;
197    AVStream* vst;
198    nodeid_t* camera_nodes;
199    int res;
200    struct dc1394_frame_format *fmt = NULL;
201    struct dc1394_frame_rate *fps = NULL;
202
203    if (dc1394_read_common(c,ap,&fmt,&fps) != 0)
204        return -1;
205
206    /* Now let us prep the hardware. */
207    dc1394->handle = dc1394_create_handle(0); /* FIXME: gotta have ap->port */
208    if (!dc1394->handle) {
209        av_log(c, AV_LOG_ERROR, "Can't acquire dc1394 handle on port %d\n", 0 /* ap->port */);
210        goto out;
211    }
212    camera_nodes = dc1394_get_camera_nodes(dc1394->handle, &res, 1);
213    if (!camera_nodes || camera_nodes[dc1394->channel] == DC1394_NO_CAMERA) {
214        av_log(c, AV_LOG_ERROR, "There's no IIDC camera on the channel %d\n", dc1394->channel);
215        goto out_handle;
216    }
217    res = dc1394_dma_setup_capture(dc1394->handle, camera_nodes[dc1394->channel],
218                                   0,
219                                   FORMAT_VGA_NONCOMPRESSED,
220                                   fmt->frame_size_id,
221                                   SPEED_400,
222                                   fps->frame_rate_id, 8, 1,
223                                   c->filename,
224                                   &dc1394->camera);
225    dc1394_free_camera_nodes(camera_nodes);
226    if (res != DC1394_SUCCESS) {
227        av_log(c, AV_LOG_ERROR, "Can't prepare camera for the DMA capture\n");
228        goto out_handle;
229    }
230
231    res = dc1394_start_iso_transmission(dc1394->handle, dc1394->camera.node);
232    if (res != DC1394_SUCCESS) {
233        av_log(c, AV_LOG_ERROR, "Can't start isochronous transmission\n");
234        goto out_handle_dma;
235    }
236
237    return 0;
238
239out_handle_dma:
240    dc1394_dma_unlisten(dc1394->handle, &dc1394->camera);
241    dc1394_dma_release_camera(dc1394->handle, &dc1394->camera);
242out_handle:
243    dc1394_destroy_handle(dc1394->handle);
244out:
245    return -1;
246}
247
248static int dc1394_v1_read_packet(AVFormatContext *c, AVPacket *pkt)
249{
250    struct dc1394_data *dc1394 = c->priv_data;
251    int res;
252
253    /* discard stale frame */
254    if (dc1394->current_frame++) {
255        if (dc1394_dma_done_with_buffer(&dc1394->camera) != DC1394_SUCCESS)
256            av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame);
257    }
258
259    res = dc1394_dma_single_capture(&dc1394->camera);
260
261    if (res == DC1394_SUCCESS) {
262        dc1394->packet.data = (uint8_t *)(dc1394->camera.capture_buffer);
263        dc1394->packet.pts = (dc1394->current_frame * 1000000) / dc1394->frame_rate;
264        res = dc1394->packet.size;
265    } else {
266        av_log(c, AV_LOG_ERROR, "DMA capture failed\n");
267        dc1394->packet.data = NULL;
268        res = -1;
269    }
270
271    *pkt = dc1394->packet;
272    return res;
273}
274
275static int dc1394_v1_close(AVFormatContext * context)
276{
277    struct dc1394_data *dc1394 = context->priv_data;
278
279    dc1394_stop_iso_transmission(dc1394->handle, dc1394->camera.node);
280    dc1394_dma_unlisten(dc1394->handle, &dc1394->camera);
281    dc1394_dma_release_camera(dc1394->handle, &dc1394->camera);
282    dc1394_destroy_handle(dc1394->handle);
283
284    return 0;
285}
286
287#elif HAVE_LIBDC1394_2
288static int dc1394_v2_read_header(AVFormatContext *c, AVFormatParameters * ap)
289{
290    dc1394_data* dc1394 = c->priv_data;
291    dc1394camera_list_t *list;
292    int res, i;
293    struct dc1394_frame_format *fmt = NULL;
294    struct dc1394_frame_rate *fps = NULL;
295
296    if (dc1394_read_common(c,ap,&fmt,&fps) != 0)
297       return -1;
298
299    /* Now let us prep the hardware. */
300    dc1394->d = dc1394_new();
301    dc1394_camera_enumerate (dc1394->d, &list);
302    if ( !list || list->num == 0) {
303        av_log(c, AV_LOG_ERROR, "Unable to look for an IIDC camera\n\n");
304        goto out;
305    }
306
307    /* FIXME: To select a specific camera I need to search in list its guid */
308    dc1394->camera = dc1394_camera_new (dc1394->d, list->ids[0].guid);
309    if (list->num > 1) {
310        av_log(c, AV_LOG_INFO, "Working with the first camera found\n");
311    }
312
313    /* Freeing list of cameras */
314    dc1394_camera_free_list (list);
315
316    /* Select MAX Speed possible from the cam */
317    if (dc1394->camera->bmode_capable>0) {
318       dc1394_video_set_operation_mode(dc1394->camera, DC1394_OPERATION_MODE_1394B);
319       i = DC1394_ISO_SPEED_800;
320    } else {
321       i = DC1394_ISO_SPEED_400;
322    }
323
324    for (res = DC1394_FAILURE; i >= DC1394_ISO_SPEED_MIN && res != DC1394_SUCCESS; i--) {
325            res=dc1394_video_set_iso_speed(dc1394->camera, i);
326    }
327    if (res != DC1394_SUCCESS) {
328        av_log(c, AV_LOG_ERROR, "Couldn't set ISO Speed\n");
329        goto out_camera;
330    }
331
332    if (dc1394_video_set_mode(dc1394->camera, fmt->frame_size_id) != DC1394_SUCCESS) {
333        av_log(c, AV_LOG_ERROR, "Couldn't set video format\n");
334        goto out_camera;
335    }
336
337    if (dc1394_video_set_framerate(dc1394->camera,fps->frame_rate_id) != DC1394_SUCCESS) {
338        av_log(c, AV_LOG_ERROR, "Couldn't set framerate %d \n",fps->frame_rate);
339        goto out_camera;
340    }
341    if (dc1394_capture_setup(dc1394->camera, 10, DC1394_CAPTURE_FLAGS_DEFAULT)!=DC1394_SUCCESS) {
342        av_log(c, AV_LOG_ERROR, "Cannot setup camera \n");
343        goto out_camera;
344    }
345
346    if (dc1394_video_set_transmission(dc1394->camera, DC1394_ON) !=DC1394_SUCCESS) {
347        av_log(c, AV_LOG_ERROR, "Cannot start capture\n");
348        goto out_camera;
349    }
350    return 0;
351
352out_camera:
353    dc1394_capture_stop(dc1394->camera);
354    dc1394_video_set_transmission(dc1394->camera, DC1394_OFF);
355    dc1394_camera_free (dc1394->camera);
356out:
357    dc1394_free(dc1394->d);
358    return -1;
359}
360
361static int dc1394_v2_read_packet(AVFormatContext *c, AVPacket *pkt)
362{
363    struct dc1394_data *dc1394 = c->priv_data;
364    int res;
365
366    /* discard stale frame */
367    if (dc1394->current_frame++) {
368        if (dc1394_capture_enqueue(dc1394->camera, dc1394->frame) != DC1394_SUCCESS)
369            av_log(c, AV_LOG_ERROR, "failed to release %d frame\n", dc1394->current_frame);
370    }
371
372    res = dc1394_capture_dequeue(dc1394->camera, DC1394_CAPTURE_POLICY_WAIT, &dc1394->frame);
373    if (res == DC1394_SUCCESS) {
374        dc1394->packet.data = (uint8_t *) dc1394->frame->image;
375        dc1394->packet.pts  = dc1394->current_frame * 1000000 / dc1394->frame_rate;
376        res = dc1394->frame->image_bytes;
377    } else {
378        av_log(c, AV_LOG_ERROR, "DMA capture failed\n");
379        dc1394->packet.data = NULL;
380        res = -1;
381    }
382
383    *pkt = dc1394->packet;
384    return res;
385}
386
387static int dc1394_v2_close(AVFormatContext * context)
388{
389    struct dc1394_data *dc1394 = context->priv_data;
390
391    dc1394_video_set_transmission(dc1394->camera, DC1394_OFF);
392    dc1394_capture_stop(dc1394->camera);
393    dc1394_camera_free(dc1394->camera);
394    dc1394_free(dc1394->d);
395
396    return 0;
397}
398
399AVInputFormat ff_libdc1394_demuxer = {
400    .name           = "libdc1394",
401    .long_name      = NULL_IF_CONFIG_SMALL("dc1394 v.2 A/V grab"),
402    .priv_data_size = sizeof(struct dc1394_data),
403    .read_header    = dc1394_v2_read_header,
404    .read_packet    = dc1394_v2_read_packet,
405    .read_close     = dc1394_v2_close,
406    .flags          = AVFMT_NOFILE,
407    .priv_class     = &libdc1394_class,
408};
409
410#endif
411#if HAVE_LIBDC1394_1
412AVInputFormat ff_libdc1394_demuxer = {
413    .name           = "libdc1394",
414    .long_name      = NULL_IF_CONFIG_SMALL("dc1394 v.1 A/V grab"),
415    .priv_data_size = sizeof(struct dc1394_data),
416    .read_header    = dc1394_v1_read_header,
417    .read_packet    = dc1394_v1_read_packet,
418    .read_close     = dc1394_v1_close,
419    .flags          = AVFMT_NOFILE,
420    .priv_class     = &libdc1394_class,
421};
422#endif
423