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/*
* vim: set sts=2 sw=2 et :
*
* License: LGPL-2.1+
* Copyright (c) 2014 Nirbheek Chauhan <nirbheek@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "local-play.h"
static void
pad_has_video_caps (TranscodeServerCtx *ctx,
GstPad *decodebin_pad)
{
GstPad *sink_pad;
GstElement *bin;
GstElement *videoconv, *videoscale, *videosink;
bin = gst_bin_new (NULL);
videoconv = gst_element_factory_make ("videoconvert", "videoconv");
videoscale = gst_element_factory_make ("videoscale", "videoscale");
videosink = gst_element_factory_make ("autovideosink", "videosink");
gst_bin_add_many (GST_BIN (bin), videoconv, videoscale, videosink, NULL);
gst_element_link_many (videoconv, videoscale, videosink, NULL);
sink_pad = gst_element_get_static_pad (videoconv, "sink");
gst_element_add_pad (bin, gst_ghost_pad_new ("sink", sink_pad));
gst_object_unref (sink_pad);
gst_bin_add (GST_BIN (ctx->pipeline), bin);
sink_pad = gst_element_get_static_pad (bin, "sink");
if (gst_pad_link (decodebin_pad, sink_pad) != GST_PAD_LINK_OK) {
g_critical ("ERROR: Unable to link video pads");
soup_message_set_status (ctx->msg, SOUP_STATUS_INTERNAL_SERVER_ERROR);
goto out;
}
/* Since these elements have been added to the pipeline after the state was
* changed from GST_STATE_NULL, they have to be moved to PAUSED manually */
gst_element_set_state (bin, GST_STATE_PAUSED);
out:
gst_object_unref (sink_pad);
return;
}
static void
pad_has_audio_caps (TranscodeServerCtx *ctx,
GstPad *decodebin_pad)
{
GstPad *sink_pad;
GstElement *bin;
GstElement *audioconv, *audioresample, *audiosink;
bin = gst_bin_new (NULL);
audioconv = gst_element_factory_make ("audioconvert", "audioconv");
audioresample = gst_element_factory_make ("audioresample", "audioresample");
audiosink = gst_element_factory_make ("autoaudiosink", "audiosink");
gst_bin_add_many (GST_BIN (bin), audioconv, audioresample, audiosink, NULL);
gst_element_link_many (audioconv, audioresample, audiosink, NULL);
sink_pad = gst_element_get_static_pad (audioconv, "sink");
gst_element_add_pad (bin, gst_ghost_pad_new ("sink", sink_pad));
gst_object_unref (sink_pad);
gst_bin_add (GST_BIN (ctx->pipeline), bin);
sink_pad = gst_element_get_static_pad (bin, "sink");
if (gst_pad_link (decodebin_pad, sink_pad) != GST_PAD_LINK_OK) {
g_critical ("ERROR: Unable to link video pads");
soup_message_set_status (ctx->msg, SOUP_STATUS_INTERNAL_SERVER_ERROR);
goto out;
}
/* Since these elements have been added to the pipeline after the state was
* changed from GST_STATE_NULL, they have to be moved to PAUSED manually */
gst_element_set_state (bin, GST_STATE_PAUSED);
out:
gst_object_unref (sink_pad);
return;
}
static gboolean
structure_printf (GQuark field_id,
const GValue *value,
gpointer user_data)
{
char *char_value;
char_value = g_strdup_value_contents (value);
g_print ("%s = %s\n", g_quark_to_string (field_id), char_value);
g_free (char_value);
return TRUE;
}
static void
decodebin_pad_added (GstElement *decodebin,
GstPad *src_pad,
gpointer user_data)
{
GstCaps *pad_caps;
GstStructure *structure;
TranscodeServerCtx *ctx = user_data;
if (!gst_pad_has_current_caps (src_pad)) {
g_critical ("Decodebin pad doesn't have current caps");
soup_message_set_status (ctx->msg, SOUP_STATUS_INTERNAL_SERVER_ERROR);
return;
}
pad_caps = gst_pad_get_current_caps (src_pad);
structure = gst_caps_get_structure (pad_caps, 0);
gst_structure_foreach (structure, structure_printf, NULL);
if (gst_structure_has_name (structure, "audio/x-raw"))
pad_has_audio_caps (ctx, src_pad);
else if (gst_structure_has_name (structure, "video/x-raw"))
pad_has_video_caps (ctx, src_pad);
else
g_critical ("Found unsupported caps: %s",
gst_structure_get_name (structure));
gst_caps_unref (pad_caps);
}
void
stp_play_from_msg (TranscodeServerCtx *ctx)
{
GstBus *bus;
GstElement *src, *decodebin;
g_debug ("Constructing pipeline\n");
src = gst_element_factory_make ("appsrc", "src");
g_object_set (src, "is-live", TRUE,
"stream-type", 0, NULL);
ctx->appsrc = src;
decodebin = gst_element_factory_make ("decodebin", "decodebin");
gst_bin_add_many (GST_BIN (ctx->pipeline), src, decodebin, NULL);
gst_element_link (src, decodebin);
g_signal_connect (decodebin, "pad-added",
G_CALLBACK (decodebin_pad_added), ctx);
bus = gst_pipeline_get_bus (GST_PIPELINE (ctx->pipeline));
gst_bus_add_signal_watch (bus);
g_signal_connect (bus, "message", G_CALLBACK (stp_on_gst_bus_message), ctx);
g_object_unref (bus);
}
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