mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-20 00:05:06 +02:00
502 lines
16 KiB
C
502 lines
16 KiB
C
/*
|
|
* Copyright (c) 2012 Georg Lippitsch <georg.lippitsch@gmx.at>
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* libiec61883 interface
|
|
*/
|
|
|
|
#include <sys/poll.h>
|
|
#include <libraw1394/raw1394.h>
|
|
#include <libavc1394/avc1394.h>
|
|
#include <libavc1394/rom1394.h>
|
|
#include <libiec61883/iec61883.h>
|
|
#include "libavformat/dv.h"
|
|
#include "libavformat/mpegts.h"
|
|
#include "libavutil/opt.h"
|
|
#include "avdevice.h"
|
|
|
|
#define THREADS HAVE_PTHREADS
|
|
|
|
#if THREADS
|
|
#include <pthread.h>
|
|
#endif
|
|
|
|
#define MOTDCT_SPEC_ID 0x00005068
|
|
#define IEC61883_AUTO 0
|
|
#define IEC61883_DV 1
|
|
#define IEC61883_HDV 2
|
|
|
|
/**
|
|
* For DV, one packet corresponds exactly to one frame.
|
|
* For HDV, these are MPEG2 transport stream packets.
|
|
* The queue is implemented as linked list.
|
|
*/
|
|
typedef struct DVPacket {
|
|
uint8_t *buf; ///< actual buffer data
|
|
int len; ///< size of buffer allocated
|
|
struct DVPacket *next; ///< next DVPacket
|
|
} DVPacket;
|
|
|
|
struct iec61883_data {
|
|
AVClass *class;
|
|
raw1394handle_t raw1394; ///< handle for libraw1394
|
|
iec61883_dv_fb_t iec61883_dv; ///< handle for libiec61883 when used with DV
|
|
iec61883_mpeg2_t iec61883_mpeg2; ///< handle for libiec61883 when used with HDV
|
|
|
|
DVDemuxContext *dv_demux; ///< generic DV muxing/demuxing context
|
|
MpegTSContext *mpeg_demux; ///< generic HDV muxing/demuxing context
|
|
|
|
DVPacket *queue_first; ///< first element of packet queue
|
|
DVPacket *queue_last; ///< last element of packet queue
|
|
|
|
char *device_guid; ///< to select one of multiple DV devices
|
|
|
|
int packets; ///< Number of packets queued
|
|
int max_packets; ///< Max. number of packets in queue
|
|
|
|
int bandwidth; ///< returned by libiec61883
|
|
int channel; ///< returned by libiec61883
|
|
int input_port; ///< returned by libiec61883
|
|
int type; ///< Stream type, to distinguish DV/HDV
|
|
int node; ///< returned by libiec61883
|
|
int output_port; ///< returned by libiec61883
|
|
int thread_loop; ///< Condition for thread while-loop
|
|
int receiving; ///< True as soon data from device available
|
|
int receive_error; ///< Set in receive task in case of error
|
|
int eof; ///< True as soon as no more data available
|
|
|
|
struct pollfd raw1394_poll; ///< to poll for new data from libraw1394
|
|
|
|
/** Parse function for DV/HDV differs, so this is set before packets arrive */
|
|
int (*parse_queue)(struct iec61883_data *dv, AVPacket *pkt);
|
|
|
|
#if THREADS
|
|
pthread_t receive_task_thread;
|
|
pthread_mutex_t mutex;
|
|
pthread_cond_t cond;
|
|
#endif
|
|
};
|
|
|
|
static int iec61883_callback(unsigned char *data, int length,
|
|
int complete, void *callback_data)
|
|
{
|
|
struct iec61883_data *dv = callback_data;
|
|
DVPacket *packet;
|
|
int ret;
|
|
|
|
#if THREADS
|
|
pthread_mutex_lock(&dv->mutex);
|
|
#endif
|
|
|
|
if (dv->packets >= dv->max_packets) {
|
|
av_log(NULL, AV_LOG_ERROR, "DV packet queue overrun, dropping.\n");
|
|
ret = 0;
|
|
goto exit;
|
|
}
|
|
|
|
packet = av_mallocz(sizeof(*packet));
|
|
if (!packet) {
|
|
ret = -1;
|
|
goto exit;
|
|
}
|
|
|
|
packet->buf = av_malloc(length);
|
|
if (!packet->buf) {
|
|
av_free(packet);
|
|
ret = -1;
|
|
goto exit;
|
|
}
|
|
packet->len = length;
|
|
|
|
memcpy(packet->buf, data, length);
|
|
|
|
if (dv->queue_first) {
|
|
dv->queue_last->next = packet;
|
|
dv->queue_last = packet;
|
|
} else {
|
|
dv->queue_first = packet;
|
|
dv->queue_last = packet;
|
|
}
|
|
dv->packets++;
|
|
|
|
ret = 0;
|
|
|
|
exit:
|
|
#if THREADS
|
|
pthread_cond_broadcast(&dv->cond);
|
|
pthread_mutex_unlock(&dv->mutex);
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
static void *iec61883_receive_task(void *opaque)
|
|
{
|
|
struct iec61883_data *dv = (struct iec61883_data *)opaque;
|
|
int result;
|
|
|
|
#if THREADS
|
|
while (dv->thread_loop)
|
|
#endif
|
|
{
|
|
while ((result = poll(&dv->raw1394_poll, 1, 200)) < 0) {
|
|
if (!(errno == EAGAIN || errno == EINTR)) {
|
|
av_log(NULL, AV_LOG_ERROR, "Raw1394 poll error occurred.\n");
|
|
dv->receive_error = AVERROR(EIO);
|
|
return NULL;
|
|
}
|
|
}
|
|
if (result > 0 && ((dv->raw1394_poll.revents & POLLIN)
|
|
|| (dv->raw1394_poll.revents & POLLPRI))) {
|
|
dv->receiving = 1;
|
|
raw1394_loop_iterate(dv->raw1394);
|
|
} else if (dv->receiving) {
|
|
av_log(NULL, AV_LOG_ERROR, "No more input data available\n");
|
|
#if THREADS
|
|
pthread_mutex_lock(&dv->mutex);
|
|
dv->eof = 1;
|
|
pthread_cond_broadcast(&dv->cond);
|
|
pthread_mutex_unlock(&dv->mutex);
|
|
#else
|
|
dv->eof = 1;
|
|
#endif
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int iec61883_parse_queue_dv(struct iec61883_data *dv, AVPacket *pkt)
|
|
{
|
|
DVPacket *packet;
|
|
int size;
|
|
|
|
size = avpriv_dv_get_packet(dv->dv_demux, pkt);
|
|
if (size > 0)
|
|
return size;
|
|
|
|
packet = dv->queue_first;
|
|
if (!packet)
|
|
return -1;
|
|
|
|
size = avpriv_dv_produce_packet(dv->dv_demux, pkt,
|
|
packet->buf, packet->len, -1);
|
|
dv->queue_first = packet->next;
|
|
av_free(packet);
|
|
dv->packets--;
|
|
|
|
if (size > 0)
|
|
return size;
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int iec61883_parse_queue_hdv(struct iec61883_data *dv, AVPacket *pkt)
|
|
{
|
|
DVPacket *packet;
|
|
int size;
|
|
|
|
while (dv->queue_first) {
|
|
packet = dv->queue_first;
|
|
size = avpriv_mpegts_parse_packet(dv->mpeg_demux, pkt, packet->buf,
|
|
packet->len);
|
|
dv->queue_first = packet->next;
|
|
av_freep(&packet->buf);
|
|
av_freep(&packet);
|
|
dv->packets--;
|
|
|
|
if (size > 0)
|
|
return size;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
static int iec61883_read_header(AVFormatContext *context)
|
|
{
|
|
struct iec61883_data *dv = context->priv_data;
|
|
struct raw1394_portinfo pinf[16];
|
|
rom1394_directory rom_dir;
|
|
char *endptr;
|
|
int inport;
|
|
int nb_ports;
|
|
int port = -1;
|
|
int response;
|
|
int i, j = 0;
|
|
uint64_t guid = 0;
|
|
|
|
dv->input_port = -1;
|
|
dv->output_port = -1;
|
|
dv->channel = -1;
|
|
|
|
dv->raw1394 = raw1394_new_handle();
|
|
|
|
if (!dv->raw1394) {
|
|
av_log(context, AV_LOG_ERROR, "Failed to open IEEE1394 interface.\n");
|
|
return AVERROR(EIO);
|
|
}
|
|
|
|
if ((nb_ports = raw1394_get_port_info(dv->raw1394, pinf, 16)) < 0) {
|
|
av_log(context, AV_LOG_ERROR, "Failed to get number of IEEE1394 ports.\n");
|
|
goto fail;
|
|
}
|
|
|
|
inport = strtol(context->filename, &endptr, 10);
|
|
if (endptr != context->filename && *endptr == '\0') {
|
|
av_log(context, AV_LOG_INFO, "Selecting IEEE1394 port: %d\n", inport);
|
|
j = inport;
|
|
nb_ports = inport + 1;
|
|
} else if (strcmp(context->filename, "auto")) {
|
|
av_log(context, AV_LOG_ERROR, "Invalid input \"%s\", you should specify "
|
|
"\"auto\" for auto-detection, or the port number.\n", context->filename);
|
|
goto fail;
|
|
}
|
|
|
|
if (dv->device_guid) {
|
|
if (sscanf(dv->device_guid, "%"SCNu64, &guid) != 1) {
|
|
av_log(context, AV_LOG_INFO, "Invalid dvguid parameter: %s\n",
|
|
dv->device_guid);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
for (; j < nb_ports && port==-1; ++j) {
|
|
raw1394_destroy_handle(dv->raw1394);
|
|
|
|
if (!(dv->raw1394 = raw1394_new_handle_on_port(j))) {
|
|
av_log(context, AV_LOG_ERROR, "Failed setting IEEE1394 port.\n");
|
|
goto fail;
|
|
}
|
|
|
|
for (i=0; i<raw1394_get_nodecount(dv->raw1394); ++i) {
|
|
|
|
/* Select device explicitly by GUID */
|
|
|
|
if (guid > 1) {
|
|
if (guid == rom1394_get_guid(dv->raw1394, i)) {
|
|
dv->node = i;
|
|
port = j;
|
|
break;
|
|
}
|
|
} else {
|
|
|
|
/* Select first AV/C tape recorder player node */
|
|
|
|
if (rom1394_get_directory(dv->raw1394, i, &rom_dir) < 0)
|
|
continue;
|
|
if (((rom1394_get_node_type(&rom_dir) == ROM1394_NODE_TYPE_AVC) &&
|
|
avc1394_check_subunit_type(dv->raw1394, i, AVC1394_SUBUNIT_TYPE_VCR)) ||
|
|
(rom_dir.unit_spec_id == MOTDCT_SPEC_ID)) {
|
|
rom1394_free_directory(&rom_dir);
|
|
dv->node = i;
|
|
port = j;
|
|
break;
|
|
}
|
|
rom1394_free_directory(&rom_dir);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (port == -1) {
|
|
av_log(context, AV_LOG_ERROR, "No AV/C devices found.\n");
|
|
goto fail;
|
|
}
|
|
|
|
/* Provide bus sanity for multiple connections */
|
|
|
|
iec61883_cmp_normalize_output(dv->raw1394, 0xffc0 | dv->node);
|
|
|
|
/* Find out if device is DV or HDV */
|
|
|
|
if (dv->type == IEC61883_AUTO) {
|
|
response = avc1394_transaction(dv->raw1394, dv->node,
|
|
AVC1394_CTYPE_STATUS |
|
|
AVC1394_SUBUNIT_TYPE_TAPE_RECORDER |
|
|
AVC1394_SUBUNIT_ID_0 |
|
|
AVC1394_VCR_COMMAND_OUTPUT_SIGNAL_MODE |
|
|
0xFF, 2);
|
|
response = AVC1394_GET_OPERAND0(response);
|
|
dv->type = (response == 0x10 || response == 0x90 || response == 0x1A || response == 0x9A) ?
|
|
IEC61883_HDV : IEC61883_DV;
|
|
}
|
|
|
|
/* Connect to device, and do initialization */
|
|
|
|
dv->channel = iec61883_cmp_connect(dv->raw1394, dv->node, &dv->output_port,
|
|
raw1394_get_local_id(dv->raw1394),
|
|
&dv->input_port, &dv->bandwidth);
|
|
|
|
if (dv->channel < 0)
|
|
dv->channel = 63;
|
|
|
|
if (!dv->max_packets)
|
|
dv->max_packets = 100;
|
|
|
|
if (CONFIG_MPEGTS_DEMUXER && dv->type == IEC61883_HDV) {
|
|
|
|
/* Init HDV receive */
|
|
|
|
avformat_new_stream(context, NULL);
|
|
|
|
dv->mpeg_demux = avpriv_mpegts_parse_open(context);
|
|
if (!dv->mpeg_demux)
|
|
goto fail;
|
|
|
|
dv->parse_queue = iec61883_parse_queue_hdv;
|
|
|
|
dv->iec61883_mpeg2 = iec61883_mpeg2_recv_init(dv->raw1394,
|
|
(iec61883_mpeg2_recv_t)iec61883_callback,
|
|
dv);
|
|
|
|
dv->max_packets *= 766;
|
|
} else {
|
|
|
|
/* Init DV receive */
|
|
|
|
dv->dv_demux = avpriv_dv_init_demux(context);
|
|
if (!dv->dv_demux)
|
|
goto fail;
|
|
|
|
dv->parse_queue = iec61883_parse_queue_dv;
|
|
|
|
dv->iec61883_dv = iec61883_dv_fb_init(dv->raw1394, iec61883_callback, dv);
|
|
}
|
|
|
|
dv->raw1394_poll.fd = raw1394_get_fd(dv->raw1394);
|
|
dv->raw1394_poll.events = POLLIN | POLLERR | POLLHUP | POLLPRI;
|
|
|
|
/* Actually start receiving */
|
|
|
|
if (dv->type == IEC61883_HDV)
|
|
iec61883_mpeg2_recv_start(dv->iec61883_mpeg2, dv->channel);
|
|
else
|
|
iec61883_dv_fb_start(dv->iec61883_dv, dv->channel);
|
|
|
|
#if THREADS
|
|
dv->thread_loop = 1;
|
|
if (pthread_mutex_init(&dv->mutex, NULL))
|
|
goto fail;
|
|
if (pthread_cond_init(&dv->cond, NULL))
|
|
goto fail;
|
|
if (pthread_create(&dv->receive_task_thread, NULL, iec61883_receive_task, dv))
|
|
goto fail;
|
|
#endif
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
raw1394_destroy_handle(dv->raw1394);
|
|
return AVERROR(EIO);
|
|
}
|
|
|
|
static int iec61883_read_packet(AVFormatContext *context, AVPacket *pkt)
|
|
{
|
|
struct iec61883_data *dv = context->priv_data;
|
|
int size;
|
|
|
|
/**
|
|
* Try to parse frames from queue
|
|
*/
|
|
|
|
#if THREADS
|
|
pthread_mutex_lock(&dv->mutex);
|
|
while ((size = dv->parse_queue(dv, pkt)) == -1)
|
|
if (!dv->eof)
|
|
pthread_cond_wait(&dv->cond, &dv->mutex);
|
|
else
|
|
break;
|
|
pthread_mutex_unlock(&dv->mutex);
|
|
#else
|
|
int result;
|
|
while ((size = dv->parse_queue(dv, pkt)) == -1) {
|
|
iec61883_receive_task((void *)dv);
|
|
if (dv->receive_error)
|
|
return dv->receive_error;
|
|
}
|
|
#endif
|
|
|
|
return size;
|
|
}
|
|
|
|
static int iec61883_close(AVFormatContext *context)
|
|
{
|
|
struct iec61883_data *dv = context->priv_data;
|
|
|
|
#if THREADS
|
|
dv->thread_loop = 0;
|
|
pthread_join(dv->receive_task_thread, NULL);
|
|
pthread_cond_destroy(&dv->cond);
|
|
pthread_mutex_destroy(&dv->mutex);
|
|
#endif
|
|
|
|
if (CONFIG_MPEGTS_DEMUXER && dv->type == IEC61883_HDV) {
|
|
iec61883_mpeg2_recv_stop(dv->iec61883_mpeg2);
|
|
iec61883_mpeg2_close(dv->iec61883_mpeg2);
|
|
avpriv_mpegts_parse_close(dv->mpeg_demux);
|
|
} else {
|
|
iec61883_dv_fb_stop(dv->iec61883_dv);
|
|
iec61883_dv_fb_close(dv->iec61883_dv);
|
|
}
|
|
while (dv->queue_first) {
|
|
DVPacket *packet = dv->queue_first;
|
|
dv->queue_first = packet->next;
|
|
av_freep(&packet->buf);
|
|
av_freep(&packet);
|
|
}
|
|
|
|
iec61883_cmp_disconnect(dv->raw1394, dv->node, dv->output_port,
|
|
raw1394_get_local_id(dv->raw1394),
|
|
dv->input_port, dv->channel, dv->bandwidth);
|
|
|
|
raw1394_destroy_handle(dv->raw1394);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const AVOption options[] = {
|
|
{ "dvtype", "override autodetection of DV/HDV", offsetof(struct iec61883_data, type), AV_OPT_TYPE_INT, {.i64 = IEC61883_AUTO}, IEC61883_AUTO, IEC61883_HDV, AV_OPT_FLAG_DECODING_PARAM, "dvtype" },
|
|
{ "auto", "auto detect DV/HDV", 0, AV_OPT_TYPE_CONST, {.i64 = IEC61883_AUTO}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "dvtype" },
|
|
{ "dv", "force device being treated as DV device", 0, AV_OPT_TYPE_CONST, {.i64 = IEC61883_DV}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "dvtype" },
|
|
{ "hdv" , "force device being treated as HDV device", 0, AV_OPT_TYPE_CONST, {.i64 = IEC61883_HDV}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "dvtype" },
|
|
{ "dvbuffer", "set queue buffer size (in packets)", offsetof(struct iec61883_data, max_packets), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM },
|
|
{ "dvguid", "select one of multiple DV devices by its GUID", offsetof(struct iec61883_data, device_guid), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, AV_OPT_FLAG_DECODING_PARAM },
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVClass iec61883_class = {
|
|
.class_name = "iec61883 indev",
|
|
.item_name = av_default_item_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
.category = AV_CLASS_CATEGORY_DEVICE_VIDEO_INPUT,
|
|
};
|
|
|
|
AVInputFormat ff_iec61883_demuxer = {
|
|
.name = "iec61883",
|
|
.long_name = NULL_IF_CONFIG_SMALL("libiec61883 (new DV1394) A/V input device"),
|
|
.priv_data_size = sizeof(struct iec61883_data),
|
|
.read_header = iec61883_read_header,
|
|
.read_packet = iec61883_read_packet,
|
|
.read_close = iec61883_close,
|
|
.flags = AVFMT_NOFILE,
|
|
.priv_class = &iec61883_class,
|
|
};
|