X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fdv1394.c;fp=synfig-core%2Ftags%2Fsynfig_0_61_05%2Fsynfig-core%2Fsrc%2Fmodules%2Fmod_libavcodec%2Flibavformat%2Fdv1394.c;h=0000000000000000000000000000000000000000;hb=6fa8f2f38d4b0b35f8539bf94e27ae27015c7689;hp=8cdb924b33242398051253d84676e10abcf09ace;hpb=47fce282611fbba1044921d22ca887f9b53ad91a;p=synfig.git diff --git a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/dv1394.c b/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/dv1394.c deleted file mode 100644 index 8cdb924..0000000 --- a/synfig-core/tags/synfig_0_61_05/synfig-core/src/modules/mod_libavcodec/libavformat/dv1394.c +++ /dev/null @@ -1,313 +0,0 @@ -/* - * Linux DV1394 interface - * Copyright (c) 2003 Max Krasnyansky - * - * This library 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 of the License, or (at your option) any later version. - * - * This library 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 this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#include "avformat.h" - -#undef DV1394_DEBUG - -#include "dv1394.h" - -struct dv1394_data { - int fd; - int channel; - int width, height; - int frame_rate; - int frame_size; - int format; - - void *ring; /* Ring buffer */ - int index; /* Current frame index */ - int avail; /* Number of frames available for reading */ - int done; /* Number of completed frames */ - - int stream; /* Current stream. 0 - video, 1 - audio */ - int64_t pts; /* Current timestamp */ - AVStream *vst, *ast; -}; - -/* - * The trick here is to kludge around well known problem with kernel Ooopsing - * when you try to capture PAL on a device node configure for NTSC. That's - * why we have to configure the device node for PAL, and then read only NTSC - * amount of data. - */ -static int dv1394_reset(struct dv1394_data *dv) -{ - struct dv1394_init init; - - init.channel = dv->channel; - init.api_version = DV1394_API_VERSION; - init.n_frames = DV1394_RING_FRAMES; - init.format = DV1394_PAL; - - if (ioctl(dv->fd, DV1394_INIT, &init) < 0) - return -1; - - dv->avail = dv->done = 0; - dv->stream = 0; - return 0; -} - -static int dv1394_start(struct dv1394_data *dv) -{ - /* Tell DV1394 driver to enable receiver */ - if (ioctl(dv->fd, DV1394_START_RECEIVE, 0) < 0) { - perror("Failed to start receiver"); - return -1; - } - return 0; -} - -static int dv1394_read_header(AVFormatContext * context, AVFormatParameters * ap) -{ - struct dv1394_data *dv = context->priv_data; - const char *video_device; - - dv->vst = av_new_stream(context, 0); - if (!dv->vst) - return -ENOMEM; - dv->ast = av_new_stream(context, 1); - if (!dv->ast) { - av_free(dv->vst); - return -ENOMEM; - } - - if (ap->standard && !strcasecmp(ap->standard, "pal")) - dv->format = DV1394_PAL; - else - dv->format = DV1394_NTSC; - - if (ap->channel) - dv->channel = ap->channel; - else - dv->channel = DV1394_DEFAULT_CHANNEL; - - dv->width = DV1394_WIDTH; - if (dv->format == DV1394_NTSC) { - dv->height = DV1394_NTSC_HEIGHT; - dv->frame_size = DV1394_NTSC_FRAME_SIZE; - dv->frame_rate = 30; - } else { - dv->height = DV1394_PAL_HEIGHT; - dv->frame_size = DV1394_PAL_FRAME_SIZE; - dv->frame_rate = 25; - } - - /* Open and initialize DV1394 device */ - video_device = ap->device; - if (!video_device) - video_device = "/dev/dv1394/0"; - dv->fd = open(video_device, O_RDONLY); - if (dv->fd < 0) { - perror("Failed to open DV interface"); - goto failed; - } - - if (dv1394_reset(dv) < 0) { - perror("Failed to initialize DV interface"); - goto failed; - } - - dv->ring = mmap(NULL, DV1394_PAL_FRAME_SIZE * DV1394_RING_FRAMES, - PROT_READ, MAP_PRIVATE, dv->fd, 0); - if (dv->ring == MAP_FAILED) { - perror("Failed to mmap DV ring buffer"); - goto failed; - } - - dv->stream = 0; - - dv->vst->codec.codec_type = CODEC_TYPE_VIDEO; - dv->vst->codec.codec_id = CODEC_ID_DVVIDEO; - dv->vst->codec.width = dv->width; - dv->vst->codec.height = dv->height; - dv->vst->codec.frame_rate = dv->frame_rate; - dv->vst->codec.frame_rate_base = 1; - dv->vst->codec.bit_rate = 25000000; /* Consumer DV is 25Mbps */ - - dv->ast->codec.codec_type = CODEC_TYPE_AUDIO; - dv->ast->codec.codec_id = CODEC_ID_DVAUDIO; - dv->ast->codec.channels = 2; - dv->ast->codec.sample_rate= 48000; - - av_set_pts_info(context, 48, 1, 1000000); - - if (dv1394_start(dv) < 0) - goto failed; - - return 0; - -failed: - close(dv->fd); - av_free(dv->vst); - av_free(dv->ast); - return -EIO; -} - -static void __destruct_pkt(struct AVPacket *pkt) -{ - pkt->data = NULL; pkt->size = 0; - return; -} - -static inline int __get_frame(struct dv1394_data *dv, AVPacket *pkt) -{ - char *ptr = dv->ring + (dv->index * DV1394_PAL_FRAME_SIZE); - - if (dv->stream) { - dv->index = (dv->index + 1) % DV1394_RING_FRAMES; - dv->done++; dv->avail--; - } else { - dv->pts = av_gettime() & ((1LL << 48) - 1); - } - - dv->format = ((ptr[3] & 0x80) == 0) ? DV1394_NTSC : DV1394_PAL; - if (dv->format == DV1394_NTSC) { - dv->frame_size = DV1394_NTSC_FRAME_SIZE; - dv->vst->codec.height = dv->height = DV1394_NTSC_HEIGHT; - dv->vst->codec.frame_rate = dv->frame_rate = 30; - } else { - dv->frame_size = DV1394_PAL_FRAME_SIZE; - dv->vst->codec.height = dv->height = DV1394_PAL_HEIGHT; - dv->vst->codec.frame_rate = dv->frame_rate = 25; - } - - av_init_packet(pkt); - pkt->destruct = __destruct_pkt; - pkt->data = ptr; - pkt->size = dv->frame_size; - pkt->pts = dv->pts; - pkt->stream_index = dv->stream; - pkt->flags |= PKT_FLAG_KEY; - - dv->stream ^= 1; - - return dv->frame_size; -} - -static int dv1394_read_packet(AVFormatContext *context, AVPacket *pkt) -{ - struct dv1394_data *dv = context->priv_data; - - if (!dv->avail) { - struct dv1394_status s; - struct pollfd p; - - if (dv->done) { - /* Request more frames */ - if (ioctl(dv->fd, DV1394_RECEIVE_FRAMES, dv->done) < 0) { - /* This usually means that ring buffer overflowed. - * We have to reset :(. - */ - - fprintf(stderr, "DV1394: Ring buffer overflow. Reseting ..\n"); - - dv1394_reset(dv); - dv1394_start(dv); - } - dv->done = 0; - } - - /* Wait until more frames are available */ -restart_poll: - p.fd = dv->fd; - p.events = POLLIN | POLLERR | POLLHUP; - if (poll(&p, 1, -1) < 0) { - if (errno == EAGAIN || errno == EINTR) - goto restart_poll; - perror("Poll failed"); - return -EIO; - } - - if (ioctl(dv->fd, DV1394_GET_STATUS, &s) < 0) { - perror("Failed to get status"); - return -EIO; - } -#ifdef DV1394_DEBUG - fprintf(stderr, "DV1394: status\n" - "\tactive_frame\t%d\n" - "\tfirst_clear_frame\t%d\n" - "\tn_clear_frames\t%d\n" - "\tdropped_frames\t%d\n", - s.active_frame, s.first_clear_frame, - s.n_clear_frames, s.dropped_frames); -#endif - - dv->avail = s.n_clear_frames; - dv->index = s.first_clear_frame; - dv->done = 0; - - if (s.dropped_frames) { - fprintf(stderr, "DV1394: Frame drop detected (%d). Reseting ..\n", - s.dropped_frames); - - dv1394_reset(dv); - dv1394_start(dv); - } - } - -#ifdef DV1394_DEBUG - fprintf(stderr, "index %d, avail %d, done %d\n", dv->index, dv->avail, - dv->done); -#endif - - return __get_frame(dv, pkt); -} - -static int dv1394_close(AVFormatContext * context) -{ - struct dv1394_data *dv = context->priv_data; - - /* Shutdown DV1394 receiver */ - if (ioctl(dv->fd, DV1394_SHUTDOWN, 0) < 0) - perror("Failed to shutdown DV1394"); - - /* Unmap ring buffer */ - if (munmap(dv->ring, DV1394_NTSC_FRAME_SIZE * DV1394_RING_FRAMES) < 0) - perror("Failed to munmap DV1394 ring buffer"); - - close(dv->fd); - - return 0; -} - -static AVInputFormat dv1394_format = { - .name = "dv1394", - .long_name = "dv1394 A/V grab", - .priv_data_size = sizeof(struct dv1394_data), - .read_header = dv1394_read_header, - .read_packet = dv1394_read_packet, - .read_close = dv1394_close, - .flags = AVFMT_NOFILE -}; - -int dv1394_init(void) -{ - av_register_input_format(&dv1394_format); - return 0; -}