X-Git-Url: https://git.ao2.it/gst-aseq-appsrc.git/blobdiff_plain/9f7e5fde8b002efb97504ee9a4eb464fce4072ed..2dcd337c4aad9ce7a8a0b06e9243b3adb05ecb95:/gst-aseq-appsrc.c diff --git a/gst-aseq-appsrc.c b/gst-aseq-appsrc.c index 7d4a885..4988dc2 100644 --- a/gst-aseq-appsrc.c +++ b/gst-aseq-appsrc.c @@ -38,8 +38,8 @@ #define DEFAULT_TICK_PERIOD_MS 10 #define DEFAULT_POLL_TIMEOUT_MS (DEFAULT_TICK_PERIOD_MS / 2) -GST_DEBUG_CATEGORY (mysrc_debug); -#define GST_CAT_DEFAULT mysrc_debug +GST_DEBUG_CATEGORY (mysource_debug); +#define GST_CAT_DEFAULT mysource_debug typedef struct _App App; @@ -52,7 +52,7 @@ struct _App snd_seq_t *seq; int port_count; - snd_seq_addr_t *ports; + snd_seq_addr_t *seq_ports; snd_midi_event_t *parser; unsigned char *buffer; @@ -62,7 +62,7 @@ struct _App guint64 tick; }; -App s_app; +static App s_app; static int init_seq (App * app) @@ -89,55 +89,50 @@ error: return ret; } -/* parses one or more port addresses from the string */ +/* Parses one or more port addresses from the string */ static int parse_ports (const char *arg, App * app) { - char *buf, *s, *port_name; - int ret; + gchar **ports_list; + guint i; + int ret = 0; GST_DEBUG ("ports: %s", arg); - /* make a copy of the string because we're going to modify it */ - buf = strdup (arg); - if (!buf) { + /* + * Assume that ports are separated by commas. + * + * Commas are used instead of spaces because those are valid in client + * names. + */ + ports_list = g_strsplit (arg, ",", 0); + + app->port_count = g_strv_length (ports_list); + app->seq_ports = g_try_new (snd_seq_addr_t, app->port_count); + if (!app->seq_ports) { GST_ERROR ("Out of memory"); ret = -ENOMEM; - goto out; + goto out_free_ports_list; } - for (port_name = s = buf; s; port_name = s + 1) { - /* Assume that ports are separated by commas. We don't use - * spaces because those are valid in client names. */ - s = strchr (port_name, ','); - if (s) - *s = '\0'; - - app->port_count++; - app->ports = - realloc (app->ports, app->port_count * sizeof (snd_seq_addr_t)); - if (!app->ports) { - GST_ERROR ("Out of memory"); - ret = -ENOMEM; - goto out_free_buf; - } + for (i = 0; i < (guint)app->port_count; i++) { + gchar *port_name = ports_list[i]; - ret = - snd_seq_parse_address (app->seq, &app->ports[app->port_count - 1], + ret = snd_seq_parse_address (app->seq, &app->seq_ports[i], port_name); if (ret < 0) { - GST_ERROR ("Invalid port %s - %s", port_name, snd_strerror (ret)); - goto error_free_ports; + GST_ERROR ("Invalid port %s - %s", port_name, + snd_strerror (ret)); + goto error_free_seq_ports; } } - goto out_free_buf; + goto out_free_ports_list; -error_free_ports: - free (app->ports); -out_free_buf: - free (buf); -out: +error_free_seq_ports: + g_free (app->seq_ports); +out_free_ports_list: + g_strfreev (ports_list); return ret; } @@ -164,24 +159,23 @@ connect_ports (App * app) for (i = 0; i < app->port_count; ++i) { ret = - snd_seq_connect_from (app->seq, 0, app->ports[i].client, - app->ports[i].port); + snd_seq_connect_from (app->seq, 0, app->seq_ports[i].client, + app->seq_ports[i].port); if (ret < 0) /* warning */ GST_WARNING ("Cannot connect from port %d:%d - %s", - app->ports[i].client, app->ports[i].port, snd_strerror (ret)); + app->seq_ports[i].client, app->seq_ports[i].port, snd_strerror (ret)); } } static void push_buffer (App * app, gpointer data, guint size) { - GstBuffer *buffer; GstClockTime time; - int ret; gpointer local_data; + GstBuffer *buffer; + int ret; - /* read the next chunk */ buffer = gst_buffer_new (); time = app->tick * DEFAULT_TICK_PERIOD_MS * GST_MSECOND; @@ -191,13 +185,14 @@ push_buffer (App * app, gpointer data, guint size) GST_BUFFER_OFFSET (buffer) = time; GST_BUFFER_DURATION (buffer) = DEFAULT_TICK_PERIOD_MS * GST_MSECOND; - local_data = g_malloc (size); - memcpy (local_data, data, size); + local_data = g_memdup (data, size); gst_buffer_append_memory (buffer, gst_memory_new_wrapped (0, local_data, size, 0, size, local_data, g_free)); + GST_MEMDUMP ("MIDI data:", local_data, size); + GST_DEBUG ("feed buffer %p, tick %" G_GUINT64_FORMAT " size: %u", (gpointer) buffer, app->tick, size); g_signal_emit_by_name (app->appsrc, "push-buffer", buffer, &ret); @@ -227,14 +222,18 @@ feed_data (GstElement * appsrc, guint size, App * app) ret = poll (app->pfds, app->npfds, DEFAULT_POLL_TIMEOUT_MS); if (ret < 0) { GST_ERROR ("ERROR in poll: %s", strerror (errno)); + gst_app_src_end_of_stream (GST_APP_SRC (appsrc)); } else if (ret == 0) { push_tick_buffer (app); } else { do { snd_seq_event_t *event; err = snd_seq_event_input (app->seq, &event); - if (err < 0) + if (err < 0 && err != -EAGAIN) { + GST_ERROR ("Error in snd_seq_event_input: %s", snd_strerror (err)); + gst_app_src_end_of_stream (GST_APP_SRC (appsrc)); break; + } if (event) { size_ev = snd_midi_event_decode (app->parser, app->buffer, DEFAULT_BUFSIZE, @@ -247,6 +246,7 @@ feed_data (GstElement * appsrc, guint size, App * app) } else { GST_ERROR ("Error decoding event from ALSA to output: %s", strerror (-size_ev)); + gst_app_src_end_of_stream (GST_APP_SRC (appsrc)); break; } } else { @@ -360,7 +360,7 @@ err_free_buffer: err_free_parser: snd_midi_event_free (app->parser); err_free_ports: - free (app->ports); + g_free (app->seq_ports); err_seq_close: snd_seq_close (app->seq); err: @@ -374,7 +374,7 @@ app_finalize (App * app) free (app->pfds); free (app->buffer); snd_midi_event_free (app->parser); - free (app->ports); + g_free (app->seq_ports); snd_seq_close (app->seq); } @@ -398,9 +398,12 @@ main (int argc, char *argv[]) GOptionContext *ctx; GError *err = NULL; gchar *ports = NULL; + gboolean verbose = FALSE; GOptionEntry options[] = { {"ports", 'p', 0, G_OPTION_ARG_STRING, &ports, "Comma separated list of sequencer ports", "client:port,..."}, + {"verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose, + "Output status information and property notifications", NULL}, {NULL} }; @@ -418,7 +421,7 @@ main (int argc, char *argv[]) gst_init (&argc, &argv); - GST_DEBUG_CATEGORY_INIT (mysrc_debug, "mysrc", 0, + GST_DEBUG_CATEGORY_INIT (mysource_debug, "mysource", 0, "ALSA MIDI sequencer appsrc pipeline"); ret = app_init (app, ports); @@ -439,6 +442,9 @@ main (int argc, char *argv[]) ("appsrc name=mysource ! fluiddec ! audioconvert ! autoaudiosink", NULL); g_assert (app->pipeline); + if (verbose) + g_signal_connect (app->pipeline, "deep-notify", G_CALLBACK (gst_object_default_deep_notify), NULL); + bus = gst_pipeline_get_bus (GST_PIPELINE (app->pipeline)); g_assert (bus);