mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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400 lines
11 KiB
C
400 lines
11 KiB
C
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/* GStreamer
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* Copyright (C) 2022 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <stdlib.h>
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#include "../key-handler.h"
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static GMainLoop *loop = NULL;
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static gint width = 640;
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static gint height = 480;
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static guint bitrate = 1000;
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G_LOCK_DEFINE_STATIC (input_lock);
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typedef struct
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{
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GstElement *pipeline;
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GstElement *capsfilter;
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GstElement *encoder;
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gulong probe_id;
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gint prev_width;
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gint prev_height;
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} TestCallbackData;
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static void
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print_keyboard_help (void)
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{
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/* *INDENT-OFF* */
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static struct
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{
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const gchar *key_desc;
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const gchar *key_help;
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} key_controls[] = {
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{
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"q", "Quit"}, {
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"right arrow", "Increase Width"}, {
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"left arrow", "Decrease Width"}, {
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"up arrow", "Increase Height"}, {
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"down arrow", "Decrease Height"}, {
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">", "Increase bitrate by 100 kbit/sec"}, {
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"<", "Decrease bitrate by 100 kbit/sec"}, {
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"k", "show keyboard shortcuts"}
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};
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/* *INDENT-ON* */
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guint i, chars_to_pad, desc_len, max_desc_len = 0;
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gst_print ("\n\n%s\n\n", "Keyboard controls:");
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for (i = 0; i < G_N_ELEMENTS (key_controls); ++i) {
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desc_len = g_utf8_strlen (key_controls[i].key_desc, -1);
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max_desc_len = MAX (max_desc_len, desc_len);
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}
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++max_desc_len;
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for (i = 0; i < G_N_ELEMENTS (key_controls); ++i) {
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chars_to_pad = max_desc_len - g_utf8_strlen (key_controls[i].key_desc, -1);
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gst_print ("\t%s", key_controls[i].key_desc);
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gst_print ("%-*s: ", chars_to_pad, "");
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gst_print ("%s\n", key_controls[i].key_help);
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}
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gst_print ("\n");
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}
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static void
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keyboard_cb (gchar input, gboolean is_ascii, gpointer user_data)
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{
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TestCallbackData *data = (TestCallbackData *) user_data;
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G_LOCK (input_lock);
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if (!is_ascii) {
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switch (input) {
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case KB_ARROW_UP:
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height += 2;
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gst_print ("Increase height to %d\n", height);
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break;
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case KB_ARROW_DOWN:
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height -= 2;
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height = MAX (height, 16);
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gst_print ("Decrease height to %d\n", height);
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break;
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case KB_ARROW_LEFT:
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width -= 2;
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width = MAX (width, 16);
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gst_print ("Decrease width to %d\n", width);
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break;
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case KB_ARROW_RIGHT:
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width += 2;
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gst_print ("Increase width to %d\n", width);
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break;
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default:
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break;
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}
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} else {
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switch (input) {
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case 'k':
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case 'K':
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print_keyboard_help ();
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break;
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case 'q':
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case 'Q':
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gst_element_send_event (data->pipeline, gst_event_new_eos ());
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g_main_loop_quit (loop);
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break;
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case '>':
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bitrate += 100;
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bitrate = MIN (bitrate, 2048000);
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gst_print ("Increase bitrate to %d\n", bitrate);
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g_object_set (data->encoder, "bitrate", bitrate, NULL);
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break;
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case '<':
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bitrate -= 100;
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bitrate = MAX (bitrate, 100);
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gst_print ("Decrease bitrate to %d\n", bitrate);
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g_object_set (data->encoder, "bitrate", bitrate, NULL);
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break;
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default:
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break;
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}
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}
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G_UNLOCK (input_lock);
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}
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static gboolean
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bus_msg (GstBus * bus, GstMessage * msg, gpointer user_data)
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{
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TestCallbackData *data = (TestCallbackData *) user_data;
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GstElement *pipeline = data->pipeline;
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switch (GST_MESSAGE_TYPE (msg)) {
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case GST_MESSAGE_STATE_CHANGED:
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if (GST_MESSAGE_SRC (msg) == GST_OBJECT_CAST (pipeline)) {
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gchar *state_transition_name;
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GstState old, new, pending;
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gst_message_parse_state_changed (msg, &old, &new, &pending);
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state_transition_name = g_strdup_printf ("%s_%s",
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gst_element_state_get_name (old), gst_element_state_get_name (new));
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/* dump graph for (some) pipeline state changes */
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{
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gchar *dump_name = g_strconcat ("mfvideoenc.", state_transition_name,
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NULL);
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GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (pipeline),
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GST_DEBUG_GRAPH_SHOW_ALL, dump_name);
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g_free (dump_name);
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}
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g_free (state_transition_name);
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}
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break;
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case GST_MESSAGE_ERROR:{
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GError *err;
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gchar *dbg;
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GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (pipeline),
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GST_DEBUG_GRAPH_SHOW_ALL, "mfvideoenc.error");
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gst_message_parse_error (msg, &err, &dbg);
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gst_printerr ("ERROR %s \n", err->message);
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if (dbg != NULL)
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gst_printerr ("ERROR debug information: %s\n", dbg);
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g_clear_error (&err);
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g_free (dbg);
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g_main_loop_quit (loop);
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break;
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}
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default:
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break;
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}
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return TRUE;
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}
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static gboolean
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check_mfvideoenc_available (const gchar * encoder_name)
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{
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gboolean ret = TRUE;
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GstElement *elem;
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elem = gst_element_factory_make (encoder_name, NULL);
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if (!elem) {
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GST_WARNING ("%s is not available", encoder_name);
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return FALSE;
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}
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/* GST_STATE_READY is meaning that driver could be loaded */
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if (gst_element_set_state (elem,
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GST_STATE_PAUSED) != GST_STATE_CHANGE_SUCCESS) {
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GST_WARNING ("cannot open device");
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ret = FALSE;
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}
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gst_element_set_state (elem, GST_STATE_NULL);
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gst_object_unref (elem);
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return ret;
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}
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static GstPadProbeReturn
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resolution_change_probe (GstPad * pad, GstPadProbeInfo * info,
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gpointer user_data)
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{
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GstPadProbeReturn ret = GST_PAD_PROBE_OK;
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TestCallbackData *data = (TestCallbackData *) user_data;
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G_LOCK (input_lock);
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if (GST_IS_BUFFER (GST_PAD_PROBE_INFO_DATA (info))) {
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GstBuffer *buffer = GST_PAD_PROBE_INFO_BUFFER (info);
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GstPad *peer = gst_pad_get_peer (pad);
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GstFlowReturn flow_ret = GST_FLOW_OK;
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ret = GST_PAD_PROBE_HANDLED;
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if (peer) {
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flow_ret = gst_pad_chain (peer, buffer);
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if (flow_ret != GST_FLOW_OK) {
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gst_pad_remove_probe (pad, data->probe_id);
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data->probe_id = 0;
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} else {
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if (data->prev_width != width || data->prev_height != height) {
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GstCaps *caps = NULL;
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gint next_width, next_height;
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next_width = width;
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next_height = height;
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g_object_get (data->capsfilter, "caps", &caps, NULL);
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caps = gst_caps_make_writable (caps);
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gst_caps_set_simple (caps,
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"width", G_TYPE_INT, next_width, "height", G_TYPE_INT,
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next_height, NULL);
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g_object_set (data->capsfilter, "caps", caps, NULL);
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gst_caps_unref (caps);
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data->prev_width = next_width;
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data->prev_height = next_height;
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}
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}
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}
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}
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G_UNLOCK (input_lock);
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return ret;
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}
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gint
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main (gint argc, gchar ** argv)
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{
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GstElement *pipeline;
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GstElement *src, *capsfilter, *enc, *enc_queue, *dec, *parser, *queue, *sink;
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GstStateChangeReturn sret;
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GError *error = NULL;
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GOptionContext *option_ctx;
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GstCaps *caps;
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TestCallbackData data = { 0, };
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GstPad *pad;
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gchar *encoder_name = NULL;
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/* *INDENT-OFF* */
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GOptionEntry options[] = {
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{"encoder", 0, 0, G_OPTION_ARG_STRING, &encoder_name,
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"MediaFoundation encoder element to test, default: mfh264enc"},
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{NULL}
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};
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/* *INDENT-ON* */
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#define MAKE_ELEMENT_AND_ADD(elem, name) G_STMT_START { \
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GstElement *_elem = gst_element_factory_make (name, NULL); \
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if (!_elem) { \
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gst_printerrln ("%s is not available", name); \
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exit (1); \
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} \
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gst_println ("Adding element %s", name); \
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elem = _elem; \
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gst_bin_add (GST_BIN (pipeline), elem); \
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} G_STMT_END
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option_ctx =
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g_option_context_new
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("MediaFoundation video encoder dynamic reconfigure example");
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g_option_context_add_main_entries (option_ctx, options, NULL);
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g_option_context_set_help_enabled (option_ctx, TRUE);
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if (!g_option_context_parse (option_ctx, &argc, &argv, &error)) {
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gst_printerrln ("option parsing failed: %s\n", error->message);
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g_clear_error (&error);
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exit (1);
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}
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g_option_context_free (option_ctx);
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gst_init (NULL, NULL);
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if (!encoder_name)
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encoder_name = g_strdup ("mfh264enc");
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if (!check_mfvideoenc_available (encoder_name)) {
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gst_printerrln ("Cannot load %s plugin", encoder_name);
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exit (1);
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}
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/* prepare the pipeline */
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loop = g_main_loop_new (NULL, FALSE);
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pipeline = gst_pipeline_new (NULL);
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MAKE_ELEMENT_AND_ADD (src, "videotestsrc");
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g_object_set (src, "pattern", 1, NULL);
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MAKE_ELEMENT_AND_ADD (capsfilter, "capsfilter");
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MAKE_ELEMENT_AND_ADD (enc, encoder_name);
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g_object_set (G_OBJECT (enc), "bitrate", bitrate, "gop-size", 30,
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"rc-mode", 0, NULL);
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MAKE_ELEMENT_AND_ADD (enc_queue, "queue");
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if (g_strrstr (encoder_name, "h265")) {
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MAKE_ELEMENT_AND_ADD (parser, "h265parse");
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MAKE_ELEMENT_AND_ADD (dec, "d3d11h265dec");
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} else if (g_strrstr (encoder_name, "vp9")) {
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MAKE_ELEMENT_AND_ADD (parser, "vp9parse");
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MAKE_ELEMENT_AND_ADD (dec, "d3d11vp9dec");
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} else {
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MAKE_ELEMENT_AND_ADD (parser, "h264parse");
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MAKE_ELEMENT_AND_ADD (dec, "d3d11h264dec");
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}
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MAKE_ELEMENT_AND_ADD (queue, "queue");
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MAKE_ELEMENT_AND_ADD (sink, "d3d11videosink");
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if (!gst_element_link_many (src, capsfilter, enc, enc_queue,
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parser, dec, queue, sink, NULL)) {
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gst_printerrln ("Failed to link element");
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exit (1);
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}
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caps = gst_caps_new_simple ("video/x-raw", "width", G_TYPE_INT,
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width, "height", G_TYPE_INT, height, NULL);
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g_object_set (capsfilter, "caps", caps, NULL);
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gst_caps_unref (caps);
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data.pipeline = pipeline;
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data.capsfilter = capsfilter;
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data.encoder = enc;
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pad = gst_element_get_static_pad (capsfilter, "src");
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data.probe_id = gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_BUFFER,
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(GstPadProbeCallback) resolution_change_probe, &data, NULL);
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gst_object_unref (pad);
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data.prev_width = width;
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data.prev_height = height;
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gst_bus_add_watch (GST_ELEMENT_BUS (pipeline), bus_msg, &data);
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/* run the pipeline */
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sret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
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if (sret == GST_STATE_CHANGE_FAILURE) {
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gst_printerrln ("Pipeline doesn't want to playing\n");
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} else {
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set_key_handler ((KeyInputCallback) keyboard_cb, &data);
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g_main_loop_run (loop);
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unset_key_handler ();
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}
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gst_element_set_state (pipeline, GST_STATE_NULL);
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gst_bus_remove_watch (GST_ELEMENT_BUS (pipeline));
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gst_object_unref (pipeline);
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g_main_loop_unref (loop);
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g_free (encoder_name);
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return 0;
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}
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