From 0bc50087dae1084b5c8039442591fee0a9623462 Mon Sep 17 00:00:00 2001 From: Anthony Minessale Date: Wed, 3 Sep 2008 17:08:30 +0000 Subject: [PATCH] add mod_fax rxfax git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@9415 d0543943-73ff-0310-b7d9-9358b9ac24b2 --- src/mod/applications/mod_fax/mod_fax.c | 206 +++++++++++++++++++++++++ 1 file changed, 206 insertions(+) create mode 100644 src/mod/applications/mod_fax/mod_fax.c diff --git a/src/mod/applications/mod_fax/mod_fax.c b/src/mod/applications/mod_fax/mod_fax.c new file mode 100644 index 0000000000..7a9bfaecd2 --- /dev/null +++ b/src/mod/applications/mod_fax/mod_fax.c @@ -0,0 +1,206 @@ +/* + * mod_fax.c (unholy forbidden interface to spandsp) + * + * Brian West + * + * + * mod_fax.c -- Fax Module + * + */ + +#include +#include + +#define MAX_BLOCK_SIZE 240 + +SWITCH_MODULE_LOAD_FUNCTION(mod_fax_load); +SWITCH_MODULE_DEFINITION(mod_fax, mod_fax_load, NULL, NULL); + +static void phase_e_handler(t30_state_t *s, void *user_data, int result) +{ + t30_stats_t t; + char local_ident[21]; + char far_ident[21]; + + if (result == T30_ERR_OK) + { + t30_get_transfer_statistics(s, &t); + t30_get_far_ident(s, far_ident); + t30_get_local_ident(s, local_ident); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "==============================================================================\n"); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Fax successfully received.\n"); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Remote station id: %s\n", far_ident); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Local station id: %s\n", local_ident); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Pages transferred: %i\n", t.pages_transferred); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Image resolution: %i x %i\n", t.x_resolution, t.y_resolution); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Transfer Rate: %i\n", t.bit_rate); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "==============================================================================\n"); + } + else + { + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "==============================================================================\n"); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Fax receive not successful - result (%d) %s.\n", result, t30_completion_code_to_str(result)); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "==============================================================================\n"); + } +} + +static void phase_d_handler(t30_state_t *s, void *user_data, int result) +{ + t30_stats_t t; + + if (result) + { + t30_get_transfer_statistics(s, &t); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "==============================================================================\n"); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Pages transferred: %i\n", t.pages_transferred); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Image size: %i x %i\n", t.width, t.length); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Image resolution %i x %i\n", t.x_resolution, t.y_resolution); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Transfer Rate: %i\n", t.bit_rate); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Bad rows %i\n", t.bad_rows); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Longest bad row run %i\n", t.longest_bad_row_run); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Compression type %i\n", t.encoding); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Image size (bytes) %i\n", t.image_size); + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "==============================================================================\n"); + } +} + +SWITCH_STANDARD_APP(rxfax_function) +{ + switch_channel_t *channel; + switch_codec_t *orig_read_codec = NULL; + switch_codec_t read_codec = {0}; + switch_codec_t write_codec = {0}; + switch_frame_t *read_frame = {0}; + switch_frame_t write_frame = {0}; + switch_status_t status; + fax_state_t fax; + int16_t buf[512]; + int tx = 0; + int calling_party = FALSE; + char *file_name = NULL; + + file_name = switch_core_session_strdup(session, data); + + channel = switch_core_session_get_channel(session); + assert(channel != NULL); + + switch_channel_answer(channel); + + orig_read_codec = switch_core_session_get_read_codec(session); + + if (switch_core_codec_init(&read_codec, + "L16", + NULL, + orig_read_codec->implementation->samples_per_second, + orig_read_codec->implementation->microseconds_per_frame / 1000, + 1, + SWITCH_CODEC_FLAG_ENCODE | SWITCH_CODEC_FLAG_DECODE, + NULL, + switch_core_session_get_pool(session)) == SWITCH_STATUS_SUCCESS) { + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Raw Codec Activation Success L16\n"); + } else { + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Raw Codec Activation Failed L16"); + goto done; + } + + if (switch_core_codec_init(&write_codec, + "L16", + NULL, + orig_read_codec->implementation->samples_per_second, + orig_read_codec->implementation->microseconds_per_frame / 1000, + 1, + SWITCH_CODEC_FLAG_ENCODE | SWITCH_CODEC_FLAG_DECODE, + NULL, + switch_core_session_get_pool(session)) == SWITCH_STATUS_SUCCESS) { + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Raw Codec Activation Success L16\n"); + } else { + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Raw Codec Activation Failed L16"); + goto done; + } + + fax_init(&fax, calling_party); + t30_set_local_ident(&fax.t30_state, "test"); + t30_set_header_info(&fax.t30_state, "test"); + t30_set_rx_file(&fax.t30_state, file_name, -1); + + t30_set_phase_d_handler(&fax.t30_state, phase_d_handler, NULL); + t30_set_phase_e_handler(&fax.t30_state, phase_e_handler, NULL); + + t30_set_ecm_capability(&fax.t30_state, TRUE); + t30_set_supported_compressions(&fax.t30_state, T30_SUPPORT_T4_1D_COMPRESSION | T30_SUPPORT_T4_2D_COMPRESSION | T30_SUPPORT_T6_COMPRESSION); + + t30_set_supported_image_sizes(&fax.t30_state, T30_SUPPORT_US_LETTER_LENGTH | T30_SUPPORT_US_LEGAL_LENGTH | T30_SUPPORT_UNLIMITED_LENGTH + | T30_SUPPORT_215MM_WIDTH | T30_SUPPORT_255MM_WIDTH | T30_SUPPORT_303MM_WIDTH); + t30_set_supported_resolutions(&fax.t30_state, T30_SUPPORT_STANDARD_RESOLUTION | T30_SUPPORT_FINE_RESOLUTION | T30_SUPPORT_SUPERFINE_RESOLUTION + | T30_SUPPORT_R8_RESOLUTION | T30_SUPPORT_R16_RESOLUTION); + + write_frame.codec = &write_codec; + write_frame.data = buf; + + while(switch_channel_ready(channel)) { + status = switch_core_session_read_frame(session, &read_frame, -1, 0); + if (!SWITCH_READ_ACCEPTABLE(status)) { + goto done; + } + + fax_rx(&fax, (int16_t *)read_frame->data, read_frame->samples); + if ((tx = fax_tx(&fax, (int16_t *) &buf, write_codec.implementation->samples_per_frame)) < 0) { + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Fax Error\n"); + goto done; + } + + if (tx) { + write_frame.datalen = tx * sizeof(int16_t); + write_frame.samples = tx; + + if (switch_core_session_write_frame(session, &write_frame, -1, 0) != SWITCH_STATUS_SUCCESS) { + switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Bad Write\n"); + goto done; + } + } + + } + + done: + + t30_terminate(&fax.t30_state); + fax_release(&fax); + + if (read_codec.implementation) { + switch_core_codec_destroy(&read_codec); + } + + if (write_codec.implementation) { + switch_core_codec_destroy(&write_codec); + } + + if (orig_read_codec) { + switch_core_session_set_read_codec(session, orig_read_codec); + } + +} + +SWITCH_MODULE_LOAD_FUNCTION(mod_fax_load) + +{ + switch_application_interface_t *app_interface; + + /* connect my internal structure to the blank pointer passed to me */ + *module_interface = switch_loadable_module_create_module_interface(pool, modname); + + SWITCH_ADD_APP(app_interface, "rxfax", "Trivial FAX Receive Application", "Trivial FAX Receive Application", rxfax_function, "", SAF_NONE); + + /* indicate that the module should continue to be loaded */ + return SWITCH_STATUS_SUCCESS; +} + +/* For Emacs: + * Local Variables: + * mode:c + * indent-tabs-mode:nil + * tab-width:4 + * c-basic-offset:4 + * End: + * For VIM: + * vim:set softtabstop=4 shiftwidth=4 tabstop=4 expandtab: + */