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/* |
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* avc_vcr.c - An example of an AV/C Tape Recorder target implementation |
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* |
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* Copyright Dan Dennedy <dan@dennedy.org> |
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* |
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* Inspired by virtual_vcr from Bonin Franck <boninf@free.fr> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software Foundation, |
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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*/ |
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|
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#include <sys/types.h> |
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#include <sys/time.h> |
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#include <sys/poll.h> |
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26 |
|
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#include <stdio.h> |
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#include <errno.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include <stdlib.h> |
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#include <signal.h> |
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|
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#include <libraw1394/raw1394.h> |
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#include <libraw1394/csr.h> |
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#include <libavc1394/avc1394.h> |
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#include <libavc1394/rom1394.h> |
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|
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const char not_compatible[] = "\n" |
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"This libraw1394 does not work with your version of Linux. You need a different\n" |
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"version that matches your kernel (see kernel help text for the raw1394 option to\n" |
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"find out which is the correct version).\n"; |
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|
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const char not_loaded[] = "\n" |
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"This probably means that you don't have raw1394 support in the kernel or that\n" |
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"you haven't loaded the raw1394 module.\n"; |
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|
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|
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unsigned char g_signal_mode = 0x05; // SD 525-60, TODO: get from media |
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unsigned char g_transport_mode = AVC1394_VCR_CMD_WIND; |
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unsigned char g_transport_state = AVC1394_VCR_OPERAND_WIND_STOP; |
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|
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static int g_done = 0; |
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|
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static void sighandler (int sig) |
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{ |
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printf("signal!\n"); |
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g_done = 1; |
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} |
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|
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/**** subunit handlers ****/ |
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int subunit_control( avc1394_cmd_rsp *cr ) |
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{ |
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switch ( cr->opcode ) |
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{ |
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case AVC1394_VCR_CMD_PLAY: |
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switch ( cr->operand[0] ) |
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{ |
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case AVC1394_VCR_OPERAND_PLAY_FORWARD: |
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g_transport_mode = AVC1394_GET_OPCODE( AVC1394_VCR_RESPONSE_TRANSPORT_STATE_PLAY ); |
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g_transport_state = AVC1394_VCR_OPERAND_PLAY_FORWARD; |
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cr->status = AVC1394_RESP_ACCEPTED; |
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printf("PLAY FORWARD\n"); |
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break; |
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|
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case AVC1394_VCR_OPERAND_PLAY_FASTEST_FORWARD: |
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g_transport_mode = AVC1394_GET_OPCODE( AVC1394_VCR_RESPONSE_TRANSPORT_STATE_PLAY ); |
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g_transport_state = AVC1394_VCR_OPERAND_PLAY_FASTEST_FORWARD; |
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cr->status = AVC1394_RESP_ACCEPTED; |
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printf("PLAY FASTEST FORWARD\n"); |
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break; |
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|
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case AVC1394_VCR_OPERAND_PLAY_REVERSE_PAUSE: |
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g_transport_mode = AVC1394_GET_OPCODE( AVC1394_VCR_RESPONSE_TRANSPORT_STATE_PLAY ); |
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g_transport_state = cr->operand[0]; |
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cr->status = AVC1394_RESP_ACCEPTED; |
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printf("PAUSE PLAY\n"); |
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break; |
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|
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case AVC1394_VCR_OPERAND_PLAY_REVERSE: |
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g_transport_mode = AVC1394_GET_OPCODE( AVC1394_VCR_RESPONSE_TRANSPORT_STATE_PLAY ); |
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g_transport_state = AVC1394_VCR_OPERAND_PLAY_REVERSE; |
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cr->status = AVC1394_RESP_ACCEPTED; |
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printf("PLAY REVERSE\n"); |
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break; |
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|
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case AVC1394_VCR_OPERAND_PLAY_FASTEST_REVERSE: |
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g_transport_mode = AVC1394_GET_OPCODE( AVC1394_VCR_RESPONSE_TRANSPORT_STATE_PLAY ); |
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g_transport_state = AVC1394_VCR_OPERAND_PLAY_FASTEST_REVERSE; |
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cr->status = AVC1394_RESP_ACCEPTED; |
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printf("PLAY FASTEST REVERSE\n"); |
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break; |
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|
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case AVC1394_VCR_OPERAND_PLAY_NEXT_FRAME: |
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g_transport_mode = AVC1394_GET_OPCODE( AVC1394_VCR_RESPONSE_TRANSPORT_STATE_PLAY ); |
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g_transport_state = cr->operand[0]; |
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cr->status = AVC1394_RESP_ACCEPTED; |
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printf("PLAY NEXT FRAME\n"); |
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break; |
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|
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case AVC1394_VCR_OPERAND_PLAY_PREVIOUS_FRAME: |
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g_transport_mode = AVC1394_GET_OPCODE( AVC1394_VCR_RESPONSE_TRANSPORT_STATE_PLAY ); |
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g_transport_state = cr->operand[0]; |
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cr->status = AVC1394_RESP_ACCEPTED; |
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printf("PLAY PREVIOUS FRAME\n"); |
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break; |
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|
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default: |
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fprintf( stderr, "play mode 0x%02x non supported\n", cr->operand[0] ); |
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return 0; |
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} |
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break; |
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|
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default: |
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fprintf( stderr, "subunit control command 0x%02x non supported\n", cr->opcode ); |
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return 0; |
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} |
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return 1; |
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} |
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|
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|
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int subunit_status( avc1394_cmd_rsp *cr ) |
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{ |
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switch ( cr->opcode ) |
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{ |
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case AVC1394_VCR_CMD_OUTPUT_SIGNAL_MODE: |
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cr->status = AVC1394_RESP_STABLE; |
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cr->operand[0] = g_signal_mode; |
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break; |
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default: |
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fprintf( stderr, "subunit status command 0x%02x not supported\n", cr->opcode ); |
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return 0; |
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} |
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return 1; |
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} |
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|
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|
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int subunit_inquiry( avc1394_cmd_rsp *cr ) |
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{ |
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switch ( cr->opcode ) |
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{ |
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case AVC1394_VCR_CMD_PLAY: |
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case AVC1394_VCR_CMD_RECORD: |
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case AVC1394_VCR_CMD_WIND: |
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case AVC1394_VCR_CMD_OUTPUT_SIGNAL_MODE: |
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case AVC1394_VCR_CMD_INPUT_SIGNAL_MODE: |
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case AVC1394_VCR_CMD_TRANSPORT_STATE: |
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case AVC1394_VCR_CMD_TIME_CODE: |
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case AVC1394_VCR_CMD_MEDIUM_INFO: |
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cr->status = AVC1394_RESP_IMPLEMENTED; |
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return 1; |
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default: |
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fprintf( stderr, "subunit inquiry command 0x%02x not supported\n", cr->opcode ); |
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return 0; |
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} |
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return 1; |
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} |
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|
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|
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/**** Unit handlers ****/ |
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int unit_control( avc1394_cmd_rsp *cr ) |
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{ |
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switch ( cr->opcode ) |
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{ |
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default: |
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fprintf( stderr, "unit control command 0x%02x not supported\n", cr->opcode ); |
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return 0; |
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} |
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return 1; |
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} |
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|
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|
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int unit_status( avc1394_cmd_rsp *cr ) |
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{ |
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cr->operand[1] = 0xff; |
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cr->operand[2] = 0xff; |
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cr->operand[3] = 0xff; |
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cr->operand[4] = 0xff; |
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switch ( cr->opcode ) |
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{ |
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case AVC1394_CMD_UNIT_INFO: |
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cr->status = AVC1394_RESP_STABLE; |
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cr->operand[0] = AVC1394_OPERAND_UNIT_INFO_EXTENSION_CODE; |
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cr->operand[1] = AVC1394_SUBUNIT_TYPE_TAPE_RECORDER >> 19; |
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break; |
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case AVC1394_CMD_SUBUNIT_INFO: |
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{ |
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int page = ( cr->operand[0] >> 4 ) & 7; |
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if ( page == 0 ) |
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{ |
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cr->status = AVC1394_RESP_STABLE; |
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cr->operand[0] = (page << 4) | AVC1394_OPERAND_UNIT_INFO_EXTENSION_CODE; |
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cr->operand[1] = AVC1394_SUBUNIT_TYPE_TAPE_RECORDER >> 19 << 3; |
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} |
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|
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else |
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{ |
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fprintf( stderr, "invalid page %d for subunit\n", page ); |
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return 0; |
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} |
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break; |
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} |
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default: |
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fprintf( stderr, "unit status command 0x%02x not supported\n", cr->opcode ); |
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return 0; |
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} |
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return 1; |
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} |
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|
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|
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int unit_inquiry( avc1394_cmd_rsp *cr ) |
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{ |
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switch ( cr->opcode ) |
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{ |
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case AVC1394_CMD_SUBUNIT_INFO: |
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case AVC1394_CMD_UNIT_INFO: |
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cr->status = AVC1394_RESP_IMPLEMENTED; |
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default: |
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fprintf( stderr, "unit inquiry command 0x%02x not supported\n", cr->opcode ); |
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return 0; |
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} |
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return 1; |
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} |
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|
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|
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/**** primary avc1394 target callback ****/ |
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int command_handler( avc1394_cmd_rsp *cr ) |
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{ |
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switch ( cr->subunit_type ) |
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{ |
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case AVC1394_SUBUNIT_TAPE_RECORDER: |
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if ( cr->subunit_id != 0 ) |
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{ |
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fprintf( stderr, "subunit id 0x%02x not supported\n", cr->subunit_id ); |
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return 0; |
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} |
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switch ( cr->status ) |
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{ |
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case AVC1394_CTYP_CONTROL: |
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return subunit_control( cr ); |
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break; |
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case AVC1394_CTYP_STATUS: |
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return subunit_status( cr ); |
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break; |
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case AVC1394_CTYP_GENERAL_INQUIRY: |
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return subunit_inquiry( cr ); |
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break; |
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} |
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break; |
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case AVC1394_SUBUNIT_UNIT: |
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switch ( cr->status ) |
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{ |
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case AVC1394_CTYP_CONTROL: |
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return unit_control( cr ); |
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break; |
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case AVC1394_CTYP_STATUS: |
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return unit_status( cr ); |
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break; |
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case AVC1394_CTYP_GENERAL_INQUIRY: |
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return unit_inquiry( cr ); |
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break; |
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} |
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break; |
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default: |
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fprintf( stderr, "subunit type 0x%02x not supported\n", cr->subunit_type ); |
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return 0; |
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} |
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return 1; |
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} |
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|
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struct configrom_backup { |
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quadlet_t rom[0x100]; |
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size_t rom_size; |
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unsigned char rom_version; |
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|
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}; |
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|
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struct configrom_backup save_config_rom(raw1394handle_t handle) |
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{ |
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int retval; |
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struct configrom_backup tmp; |
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/* get the current rom image */ |
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retval=raw1394_get_config_rom(handle, tmp.rom, 0x100, &tmp.rom_size, &tmp.rom_version); |
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// tmp.rom_size=rom1394_get_size(tmp.rom); |
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printf("save_config_rom get_config_rom returned %d, romsize %d, rom_version %d:\n",retval,tmp.rom_size,tmp.rom_version); |
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|
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return tmp; |
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} |
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|
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int restore_config_rom(raw1394handle_t handle, struct configrom_backup old) |
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{ |
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int retval,i ; |
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|
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quadlet_t current_rom[0x100]; |
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size_t current_rom_size; |
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unsigned char current_rom_version; |
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|
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retval=raw1394_get_config_rom(handle, current_rom, 0x100, ¤t_rom_size, ¤t_rom_version); |
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printf("restore_config_rom get_config_rom returned %d, romsize %d, rom_version %d:\n",retval,current_rom_size,current_rom_version); |
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|
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printf("restore_config_rom restoring to romsize %d, rom_version %d:\n",old.rom_size,old.rom_version); |
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|
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retval = raw1394_update_config_rom(handle, old.rom, old.rom_size, current_rom_version); |
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printf("restore_config_rom update_config_rom returned %d\n",retval); |
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|
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/* get the current rom image */ |
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retval=raw1394_get_config_rom(handle, current_rom, 0x100, ¤t_rom_size, ¤t_rom_version); |
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current_rom_size = rom1394_get_size(current_rom); |
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printf("get_config_rom returned %d, romsize %d, rom_version %d:",retval,current_rom_size,current_rom_version); |
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for (i = 0; i < current_rom_size; i++) |
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{ |
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if (i % 4 == 0) printf("\n0x%04x:", CSR_CONFIG_ROM+i*4); |
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printf(" %08x", ntohl(current_rom[i])); |
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} |
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printf("\n"); |
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|
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return retval; |
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} |
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|
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int init_config_rom(raw1394handle_t handle) |
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{ |
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int retval, i; |
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quadlet_t rom[0x100]; |
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size_t rom_size; |
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unsigned char rom_version; |
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rom1394_directory dir; |
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char *leaf; |
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|
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/* get the current rom image */ |
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retval=raw1394_get_config_rom(handle, rom, 0x100, &rom_size, &rom_version); |
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rom_size = rom1394_get_size(rom); |
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printf("get_config_rom returned %d, romsize %d, rom_version %d:",retval,rom_size,rom_version); |
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for (i = 0; i < rom_size; i++) |
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{ |
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if (i % 4 == 0) printf("\n0x%04x:", CSR_CONFIG_ROM+i*4); |
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printf(" %08x", ntohl(rom[i])); |
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} |
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printf("\n"); |
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349 |
|
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/* get the local directory */ |
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rom1394_get_directory( handle, raw1394_get_local_id(handle) & 0x3f, &dir); |
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|
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353 |
/* change the vendor description for kicks */ |
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i = strlen(dir.textual_leafs[0]); |
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strncpy(dir.textual_leafs[0], "FreeBob Server ", i); |
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356 |
retval = rom1394_set_directory(rom, &dir); |
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357 |
printf("rom1394_set_directory returned %d, romsize %d:",retval,rom_size); |
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358 |
for (i = 0; i < rom_size; i++) |
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359 |
{ |
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360 |
if (i % 4 == 0) printf("\n0x%04x:", CSR_CONFIG_ROM+i*4); |
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361 |
printf(" %08x", ntohl(rom[i])); |
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362 |
} |
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363 |
printf("\n"); |
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364 |
|
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365 |
/* free the allocated mem for the textual leaves */ |
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366 |
rom1394_free_directory( &dir); |
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367 |
|
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368 |
/* add an AV/C unit directory */ |
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369 |
dir.unit_spec_id = 0x0000a02d; |
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370 |
dir.unit_sw_version = 0x00010001; |
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371 |
leaf = "freebob-server"; |
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372 |
dir.nr_textual_leafs = 1; |
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373 |
dir.textual_leafs = &leaf; |
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374 |
|
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375 |
/* manipulate the rom */ |
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376 |
retval = rom1394_add_unit( rom, &dir); |
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377 |
|
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378 |
/* get the computed size of the rom image */ |
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379 |
rom_size = rom1394_get_size(rom); |
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380 |
|
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381 |
printf("rom1394_add_unit_directory returned %d, romsize %d:",retval,rom_size); |
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382 |
for (i = 0; i < rom_size; i++) |
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383 |
{ |
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384 |
if (i % 4 == 0) printf("\n0x%04x:", CSR_CONFIG_ROM+i*4); |
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385 |
printf(" %08x", ntohl(rom[i])); |
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386 |
} |
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387 |
printf("\n"); |
---|
388 |
|
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389 |
/* convert computed rom size from quadlets to bytes before update */ |
---|
390 |
rom_size *= sizeof(quadlet_t); |
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391 |
retval = raw1394_update_config_rom(handle, rom, rom_size, rom_version); |
---|
392 |
printf("update_config_rom returned %d\n",retval); |
---|
393 |
|
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394 |
retval=raw1394_get_config_rom(handle, rom, 0x100, &rom_size, &rom_version); |
---|
395 |
printf("get_config_rom returned %d, romsize %d, rom_version %d:",retval,rom_size,rom_version); |
---|
396 |
for (i = 0; i < rom_size; i++) |
---|
397 |
{ |
---|
398 |
if (i % 4 == 0) printf("\n0x%04x:", CSR_CONFIG_ROM+i*4); |
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399 |
printf(" %08x", ntohl(rom[i])); |
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400 |
} |
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401 |
printf("\n"); |
---|
402 |
|
---|
403 |
// printf("You need to reload your ieee1394 modules to reset the rom.\n"); |
---|
404 |
|
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405 |
return 0; |
---|
406 |
} |
---|
407 |
|
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408 |
|
---|
409 |
int main( int argc, char **argv ) |
---|
410 |
{ |
---|
411 |
raw1394handle_t handle; |
---|
412 |
|
---|
413 |
signal (SIGINT, sighandler); |
---|
414 |
signal (SIGPIPE, sighandler); |
---|
415 |
|
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416 |
handle = raw1394_new_handle(); |
---|
417 |
|
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418 |
if ( !handle ) |
---|
419 |
{ |
---|
420 |
if ( !errno ) |
---|
421 |
{ |
---|
422 |
printf( not_compatible ); |
---|
423 |
} |
---|
424 |
else |
---|
425 |
{ |
---|
426 |
perror( "couldn't get handle" ); |
---|
427 |
printf( not_loaded ); |
---|
428 |
} |
---|
429 |
exit( EXIT_FAILURE ); |
---|
430 |
} |
---|
431 |
|
---|
432 |
if ( raw1394_set_port( handle, 0 ) < 0 ) |
---|
433 |
{ |
---|
434 |
perror( "couldn't set port" ); |
---|
435 |
exit( EXIT_FAILURE ); |
---|
436 |
} |
---|
437 |
|
---|
438 |
struct configrom_backup cfgrom_backup; |
---|
439 |
cfgrom_backup=save_config_rom( handle ); |
---|
440 |
|
---|
441 |
if ( init_config_rom( handle ) < 0 ) |
---|
442 |
{ |
---|
443 |
perror( "couldn't init config rom!" ); |
---|
444 |
exit( EXIT_FAILURE ); |
---|
445 |
} |
---|
446 |
|
---|
447 |
|
---|
448 |
avc1394_init_target( handle, command_handler ); |
---|
449 |
|
---|
450 |
printf( "Starting AV/C target; press Ctrl+C to quit...\n" ); |
---|
451 |
struct pollfd pfd = { |
---|
452 |
fd: raw1394_get_fd (handle), |
---|
453 |
events: POLLIN | POLLPRI, |
---|
454 |
revents: 0 |
---|
455 |
}; |
---|
456 |
int result = 0; |
---|
457 |
|
---|
458 |
|
---|
459 |
do { |
---|
460 |
if (poll (&pfd, 1, 100) > 0 && (pfd.revents & POLLIN)) |
---|
461 |
result = raw1394_loop_iterate (handle); |
---|
462 |
|
---|
463 |
} while (g_done == 0 && result == 0); |
---|
464 |
|
---|
465 |
avc1394_close_target( handle ); |
---|
466 |
|
---|
467 |
restore_config_rom( handle, cfgrom_backup); |
---|
468 |
|
---|
469 |
printf( "Bye...\n" ); |
---|
470 |
exit( EXIT_SUCCESS ); |
---|
471 |
} |
---|