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FireWire DV/HDV input device using libiec61883

Browse Source 
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>
This commit is contained in:
Georg Lippitsch
2012-04-23 16:01:17 +02:00
committed by Stefano Sabatini
parent 6d74e3c6f2
commit 325fb246f2
9 changed files with 526 additions and 1 deletions
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1
Changelog
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@@ -20,6 +20,7 @@ version next:
- SAMI demuxer and decoder
- RealText demuxer and decoder
- Heart Of Darkness PAF playback support
- iec61883 device
version 0.11:

1
MAINTAINERS
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@@ -263,6 +263,7 @@ libavdevice
libavdevice/avdevice.h
iec61883.c Georg Lippitsch
libdc1394.c Roman Shaposhnik
v4l2.c Luca Abeni
vfwcap.c Ramiro Polla

3
configure vendored
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@@ -1677,6 +1677,7 @@ dshow_indev_deps="IBaseFilter"
dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
dv1394_indev_deps="dv1394 dv_demuxer"
fbdev_indev_deps="linux_fb_h"
iec61883_indev_deps="iec61883"
jack_indev_deps="jack_jack_h sem_timedwait"
lavfi_indev_deps="avfilter"
libcdio_indev_deps="libcdio"
@@ -2820,6 +2821,7 @@ case $target_os in
linux)
add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
enable dv1394
enable iec61883
;;
irix*)
target_os=irix
@@ -3285,6 +3287,7 @@ enabled avisynth && require2 vfw32 "windows.h vfw.h" AVIFileInit -lavifil32
enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
enabled frei0r && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
enabled gnutls && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
enabled iec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
enabled libaacplus && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
enabled libass && require_pkg_config libass ass/ass.h ass_library_init
enabled libbluray && require libbluray libbluray/bluray.h bd_open -lbluray

49
doc/indevs.texi
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@@ -179,6 +179,55 @@ ffmpeg -f fbdev -frames:v 1 -r 1 -i /dev/fb0 screenshot.jpeg
See also @url{http://linux-fbdev.sourceforge.net/}, and fbset(1).
@section iec61883
FireWire DV/HDV input device using libiec61883.
The iec61883 capture device supports capturing from a video device
connected via IEEE1394 (FireWire), using libiec61883 and the new Linux
FireWire stack (juju). This is the default DV/HDV input method in Linux
Kernel 2.6.37 and later, since the old FireWire stack was removed.
Specify the FireWire port to be used as input file, or "auto"
to choose the first port connected.
@subsection Options
@table @option
@item dvtype
Override autodetection of DV/HDV. This should only be used if auto
detection does not work, or if usage of a different device type
should be prohibited. Treating a DV device as HDV (or vice versa) will
not work and result in undefined behavior.
The values @option{auto}, @option{dv} and @option{hdv} are supported.
@item dvbuffer
Set maxiumum size of buffer for incoming data, in frames. For DV, this
is an exact value. For HDV, it is not frame exact, since HDV does
not have a fixed frame size.
@end table
@subsection Examples
@itemize
@item
Grab and show the input of a FireWire DV/HDV device.
@example
ffplay -f iec61883 -i auto
@end example
@item
Grab and record the input of a FireWire DV/HDV device,
using a packet buffer of 100000 packets if the source is HDV.
@example
ffmpeg -f iec61883 -i auto -hdvbuffer 100000 out.mpg
@end example
@end itemize
@section jack
JACK input device.

1
libavdevice/Makefile
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@@ -21,6 +21,7 @@ OBJS-$(CONFIG_DSHOW_INDEV) += dshow.o dshow_enummediatypes.o \
dshow_pin.o dshow_common.o
OBJS-$(CONFIG_DV1394_INDEV) += dv1394.o
OBJS-$(CONFIG_FBDEV_INDEV) += fbdev.o
OBJS-$(CONFIG_IEC61883_INDEV) += iec61883.o
OBJS-$(CONFIG_JACK_INDEV) += jack_audio.o timefilter.o
OBJS-$(CONFIG_LAVFI_INDEV) += lavfi.o
OBJS-$(CONFIG_OPENAL_INDEV) += openal-dec.o

1
libavdevice/alldevices.c
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@@ -43,6 +43,7 @@ void avdevice_register_all(void)
REGISTER_INDEV (DSHOW, dshow);
REGISTER_INDEV (DV1394, dv1394);
REGISTER_INDEV (FBDEV, fbdev);
REGISTER_INDEV (IEC61883, iec61883);
REGISTER_INDEV (JACK, jack);
REGISTER_INDEV (LAVFI, lavfi);
REGISTER_INDEV (OPENAL, openal);

466
libavdevice/iec61883.c Normal file
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@@ -0,0 +1,466 @@
/*
* 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
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;
#ifdef 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) {
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:
#ifdef THREADS
pthread_cond_signal(&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;
#ifdef 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");
#ifdef THREADS
pthread_mutex_lock(&dv->mutex);
dv->eof = 1;
pthread_cond_signal(&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);
pkt->destruct = av_destruct_packet;
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 = ff_mpegts_parse_packet(dv->mpeg_demux, pkt, packet->buf,
packet->len);
dv->queue_first = packet->next;
av_free(packet->buf);
av_free(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;
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;
}
/* Select first AV/C tape recorder player node */
for (; j < nb_ports && port==-1; ++j) {
if (raw1394_set_port(dv->raw1394, j)) {
av_log(context, AV_LOG_ERROR, "Failed setting IEEE1394 port.\n");
goto fail;
}
for (i=0; i<raw1394_get_nodecount(dv->raw1394); ++i) {
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;
}
/* 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 (dv->type == IEC61883_HDV) {
/* Init HDV receive */
avformat_new_stream(context, NULL);
dv->mpeg_demux = ff_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;
pthread_mutex_init(&dv->mutex, NULL);
pthread_cond_init(&dv->cond, NULL);
pthread_create(&dv->receive_task_thread, NULL, iec61883_receive_task, dv);
#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
*/
#ifdef 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 (dv->type == IEC61883_HDV) {
iec61883_mpeg2_recv_stop(dv->iec61883_mpeg2);
iec61883_mpeg2_close(dv->iec61883_mpeg2);
ff_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_free(packet->buf);
av_free(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, {.dbl = IEC61883_AUTO}, IEC61883_AUTO, IEC61883_HDV, AV_OPT_FLAG_DECODING_PARAM, "dvtype" },
{ "auto", "auto detect DV/HDV", 0, AV_OPT_TYPE_CONST, {.dbl = IEC61883_AUTO}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "dvtype" },
{ "dv", "force device being treated as DV device", 0, AV_OPT_TYPE_CONST, {.dbl = IEC61883_DV}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "dvtype" },
{ "hdv" , "force device being treated as HDV device", 0, AV_OPT_TYPE_CONST, {.dbl = 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, {.dbl = 0}, 0, INT_MAX, 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,
};
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,
};

2
libavdevice/version.h
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@@ -28,7 +28,7 @@
#include "libavutil/avutil.h"
#define LIBAVDEVICE_VERSION_MAJOR 54
#define LIBAVDEVICE_VERSION_MINOR 0
#define LIBAVDEVICE_VERSION_MINOR 1
#define LIBAVDEVICE_VERSION_MICRO 100
#define LIBAVDEVICE_VERSION_INT AV_VERSION_INT(LIBAVDEVICE_VERSION_MAJOR, \

3
libavformat/libavformat.v
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@@ -6,6 +6,9 @@ LIBAVFORMAT_$MAJOR {
ffm_set_write_index;
ffm_read_write_index;
ffm_write_write_index;
ff_mpegts_parse_close;
ff_mpegts_parse_open;
ff_mpegts_parse_packet;
ff_rtsp_parse_line;
ff_rtp_get_local_rtp_port;
ff_rtp_get_local_rtcp_port;