/* GStreamer
*
* encoding.c: example application for using GstProfile and encodebin
*
* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <glib.h>
#include <glib/gprintf.h>
#include <gst/gst.h>
#include <gst/pbutils/pbutils.h>
#include <gst/pbutils/encoding-profile.h>
#include "gstcapslist.h"
static gboolean silent = FALSE;
static void
list_codecs (void)
{
GstCaps *l, *caps;
GstStructure *st;
guint i, len;
gchar *tmpstr, *desc;
caps = gst_caps_new_empty ();
g_print ("Available container formats:\n");
l = gst_caps_list_container_formats (GST_RANK_NONE);
len = gst_caps_get_size (l);
for (i = 0; i < len; i++) {
st = gst_caps_steal_structure (l, 0);
gst_caps_append_structure (caps, st);
tmpstr = gst_caps_to_string (caps);
desc = gst_pb_utils_get_codec_description (caps);
g_print (" %s - %s\n", desc, tmpstr);
g_free (tmpstr);
g_free (desc);
gst_caps_remove_structure (caps, 0);
}
g_print ("\n");
gst_caps_unref (l);
g_print ("Available video codecs:\n");
l = gst_caps_list_video_encoding_formats (GST_RANK_NONE);
len = gst_caps_get_size (l);
for (i = 0; i < len; i++) {
st = gst_caps_steal_structure (l, 0);
gst_caps_append_structure (caps, st);
tmpstr = gst_caps_to_string (caps);
desc = gst_pb_utils_get_codec_description (caps);
g_print (" %s - %s\n", desc, tmpstr);
g_free (tmpstr);
g_free (desc);
gst_caps_remove_structure (caps, 0);
}
g_print ("\n");
gst_caps_unref (l);
g_print ("Available audio codecs:\n");
l = gst_caps_list_audio_encoding_formats (GST_RANK_NONE);
len = gst_caps_get_size (l);
for (i = 0; i < len; i++) {
st = gst_caps_steal_structure (l, 0);
gst_caps_append_structure (caps, st);
tmpstr = gst_caps_to_string (caps);
desc = gst_pb_utils_get_codec_description (caps);
g_print (" %s - %s\n", desc, tmpstr);
g_free (tmpstr);
g_free (desc);
gst_caps_remove_structure (caps, 0);
}
g_print ("\n");
gst_caps_unref (l);
gst_caps_unref (caps);
}
static gchar *
generate_filename (const GstCaps * container, const GstCaps * vcodec,
const GstCaps * acodec)
{
gchar *a, *b, *c;
gchar *res = NULL;
guint i;
a = gst_pb_utils_get_codec_description (container);
b = gst_pb_utils_get_codec_description (vcodec);
c = gst_pb_utils_get_codec_description (acodec);
if (!a)
a = g_strdup_printf ("%.10s",
g_uri_escape_string (gst_caps_to_string (container), NULL, FALSE));
if (!b)
b = g_strdup_printf ("%.10s",
g_uri_escape_string (gst_caps_to_string (vcodec), NULL, FALSE));
if (!c)
c = g_strdup_printf ("%.10s",
g_uri_escape_string (gst_caps_to_string (acodec), NULL, FALSE));
for (i = 0; i < 256 && res == NULL; i++) {
res = g_strdup_printf ("%s-%s-%s-%d.file", a, b, c, i);
if (g_file_test (res, G_FILE_TEST_EXISTS)) {
g_free (res);
res = NULL;
}
}
/* Make sure file doesn't already exist */
g_free (a);
g_free (b);
g_free (c);
return res;
}
static GstEncodingProfile *
create_profile (GstCaps * cf, GstCaps * vf, GstCaps * af)
{
GstEncodingContainerProfile *cprof = NULL;
cprof =
gst_encoding_container_profile_new ((gchar *) "test-application-profile",
NULL, cf, NULL);
if (vf)
gst_encoding_container_profile_add_profile (cprof,
(GstEncodingProfile *) gst_encoding_video_profile_new (vf,
NULL, NULL, 0));
if (af)
gst_encoding_container_profile_add_profile (cprof, (GstEncodingProfile *)
gst_encoding_audio_profile_new (af, NULL, NULL, 0));
/* Let's print out some info */
if (!silent) {
gchar *desc = gst_pb_utils_get_codec_description (cf);
gchar *cd = gst_caps_to_string (cf);
g_print ("Encoding parameters\n");
g_print (" Container format : %s (%s)\n", desc, cd);
g_free (desc);
g_free (cd);
if (vf) {
desc = gst_pb_utils_get_codec_description (vf);
cd = gst_caps_to_string (vf);
g_print (" Video format : %s (%s)\n", desc, cd);
g_free (desc);
g_free (cd);
}
if (af) {
desc = gst_pb_utils_get_codec_description (af);
cd = gst_caps_to_string (af);
g_print (" Audio format : %s (%s)\n", desc, cd);
g_free (desc);
g_free (cd);
}
}
return (GstEncodingProfile *) cprof;
}
static GstEncodingProfile *
create_profile_from_string (gchar * format, gchar * vformat, gchar * aformat)
{
GstEncodingProfile *prof = NULL;
GstCaps *cf = NULL, *vf = NULL, *af = NULL;
if (format)
cf = gst_caps_from_string (format);
if (vformat)
vf = gst_caps_from_string (vformat);
if (aformat)
af = gst_caps_from_string (aformat);
if (G_UNLIKELY ((vformat && (vf == NULL)) || (aformat && (af == NULL))))
goto beach;
prof = create_profile (cf, vf, af);
beach:
if (cf)
gst_caps_unref (cf);
if (vf)
gst_caps_unref (vf);
if (af)
gst_caps_unref (af);
return prof;
}
static void
pad_added_cb (GstElement * uridecodebin, GstPad * pad, GstElement * encodebin)
{
GstPad *sinkpad;
sinkpad = gst_element_get_compatible_pad (encodebin, pad, NULL);
if (sinkpad == NULL) {
GstCaps *caps;
/* Ask encodebin for a compatible pad */
caps = gst_pad_query_caps (pad, NULL);
g_signal_emit_by_name (encodebin, "request-pad", caps, &sinkpad);
if (caps)
gst_caps_unref (caps);
}
if (sinkpad == NULL) {
g_print ("Couldn't get an encoding channel for pad %s:%s\n",
GST_DEBUG_PAD_NAME (pad));
return;
}
if (G_UNLIKELY (gst_pad_link (pad, sinkpad) != GST_PAD_LINK_OK)) {
g_print ("Couldn't link pads\n");
}
return;
}
static gboolean
autoplug_continue_cb (GstElement * uridecodebin, GstPad * somepad,
GstCaps * caps, GstElement * encodebin)
{
GstPad *sinkpad;
g_signal_emit_by_name (encodebin, "request-pad", caps, &sinkpad);
if (sinkpad == NULL)
return TRUE;
return FALSE;
}
static void
bus_message_cb (GstBus * bus, GstMessage * message, GMainLoop * mainloop)
{
switch (GST_MESSAGE_TYPE (message)) {
case GST_MESSAGE_ERROR:
g_print ("ERROR\n");
gst_bus_set_flushing (bus, TRUE);
g_main_loop_quit (mainloop);
break;
case GST_MESSAGE_EOS:
g_print ("Done\n");
g_main_loop_quit (mainloop);
break;
default:
break;
}
}
static void
transcode_file (gchar * uri, gchar * outputuri, GstEncodingProfile * prof)
{
GstElement *pipeline;
GstElement *src;
GstElement *ebin;
GstElement *sink;
GstBus *bus;
GstCaps *profilecaps, *rescaps;
GMainLoop *mainloop;
g_print (" Input URI : %s\n", uri);
g_print (" Output URI : %s\n", outputuri);
sink = gst_element_make_from_uri (GST_URI_SINK, outputuri, "sink", NULL);
if (G_UNLIKELY (sink == NULL)) {
g_print ("Can't create output sink, most likely invalid output URI !\n");
return;
}
src = gst_element_factory_make ("uridecodebin", NULL);
if (G_UNLIKELY (src == NULL)) {
g_print ("Can't create uridecodebin for input URI, aborting!\n");
return;
}
/* Figure out the streams that can be passed as-is to encodebin */
g_object_get (src, "caps", &rescaps, NULL);
rescaps = gst_caps_copy (rescaps);
profilecaps = gst_encoding_profile_get_input_caps (prof);
gst_caps_append (rescaps, profilecaps);
/* Set properties */
g_object_set (src, "uri", uri, "caps", rescaps, NULL);
ebin = gst_element_factory_make ("encodebin", NULL);
g_object_set (ebin, "profile", prof, NULL);
g_signal_connect (src, "autoplug-continue", G_CALLBACK (autoplug_continue_cb),
ebin);
g_signal_connect (src, "pad-added", G_CALLBACK (pad_added_cb), ebin);
pipeline = gst_pipeline_new ("encoding-pipeline");
gst_bin_add_many (GST_BIN (pipeline), src, ebin, sink, NULL);
gst_element_link (ebin, sink);
mainloop = g_main_loop_new (NULL, FALSE);
bus = gst_pipeline_get_bus ((GstPipeline *) pipeline);
gst_bus_add_signal_watch (bus);
g_signal_connect (bus, "message", G_CALLBACK (bus_message_cb), mainloop);
if (gst_element_set_state (pipeline,
GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
g_print ("Failed to start the encoding\n");
return;
}
g_main_loop_run (mainloop);
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
}
static gchar *
ensure_uri (gchar * location)
{
gchar *res;
gchar *path;
if (gst_uri_is_valid (location))
return g_strdup (location);
if (!g_path_is_absolute (location)) {
gchar *cur_dir;
cur_dir = g_get_current_dir ();
path = g_build_filename (cur_dir, location, NULL);
g_free (cur_dir);
} else
path = g_strdup (location);
res = g_filename_to_uri (path, NULL, NULL);
g_free (path);
return res;
}
int
main (int argc, char **argv)
{
GError *err = NULL;
gchar *outputuri = NULL;
gchar *format = NULL;
gchar *aformat = NULL;
gchar *vformat = NULL;
gboolean allmissing = FALSE;
gboolean listcodecs = FALSE;
GOptionEntry options[] = {
{"silent", 's', 0, G_OPTION_ARG_NONE, &silent,
"Don't output the information structure", NULL},
{"outputuri", 'o', 0, G_OPTION_ARG_STRING, &outputuri,
"URI to encode to", "URI (<protocol>://<location>)"},
{"format", 'f', 0, G_OPTION_ARG_STRING, &format,
"Container format", "<GstCaps>"},
{"vformat", 'v', 0, G_OPTION_ARG_STRING, &vformat,
"Video format", "<GstCaps>"},
{"aformat", 'a', 0, G_OPTION_ARG_STRING, &aformat,
"Audio format", "<GstCaps>"},
{"allmissing", 'm', 0, G_OPTION_ARG_NONE, &allmissing,
"encode to all matching format/codec that aren't specified", NULL},
{"list-codecs", 'l', 0, G_OPTION_ARG_NONE, &listcodecs,
"list all available codecs and container formats", NULL},
{NULL}
};
GOptionContext *ctx;
GstEncodingProfile *prof;
gchar *inputuri;
ctx = g_option_context_new ("- encode URIs with GstProfile and encodebin");
g_option_context_add_main_entries (ctx, options, NULL);
g_option_context_add_group (ctx, gst_init_get_option_group ());
if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
g_print ("Error initializing: %s\n", err->message);
g_option_context_free (ctx);
g_clear_error (&err);
exit (1);
}
if (listcodecs) {
list_codecs ();
g_option_context_free (ctx);
exit (0);
}
if (outputuri == NULL || argc != 2) {
g_print ("%s", g_option_context_get_help (ctx, TRUE, NULL));
g_option_context_free (ctx);
exit (-1);
}
g_option_context_free (ctx);
/* Fixup outputuri to be a URI */
inputuri = ensure_uri (argv[1]);
outputuri = ensure_uri (outputuri);
if (allmissing) {
GList *muxers;
GstCaps *formats = NULL;
GstCaps *vformats = NULL;
GstCaps *aformats = NULL;
guint f, v, a, flen, vlen, alen;
if (!format)
formats = gst_caps_list_container_formats (GST_RANK_NONE);
else
formats = gst_caps_from_string (format);
if (!vformat)
vformats = gst_caps_list_video_encoding_formats (GST_RANK_NONE);
else
vformats = gst_caps_from_string (vformat);
if (!aformat)
aformats = gst_caps_list_audio_encoding_formats (GST_RANK_NONE);
else
aformats = gst_caps_from_string (aformat);
muxers =
gst_element_factory_list_get_elements (GST_ELEMENT_FACTORY_TYPE_MUXER,
GST_RANK_NONE);
flen = gst_caps_get_size (formats);
for (f = 0; f < flen; f++) {
GstCaps *container =
gst_caps_new_full (gst_caps_steal_structure (formats, 0), NULL);
GstCaps *compatv =
gst_caps_list_compatible_codecs (container, vformats, muxers);
GstCaps *compata =
gst_caps_list_compatible_codecs (container, aformats, muxers);
vlen = gst_caps_get_size (compatv);
alen = gst_caps_get_size (compata);
for (v = 0; v < vlen; v++) {
GstCaps *vcodec =
gst_caps_new_full (gst_structure_copy (gst_caps_get_structure
(compatv, v)), NULL);
for (a = 0; a < alen; a++) {
GstCaps *acodec =
gst_caps_new_full (gst_structure_copy (gst_caps_get_structure
(compata, a)), NULL);
prof =
create_profile ((GstCaps *) container, (GstCaps *) vcodec,
(GstCaps *) acodec);
if (G_UNLIKELY (prof == NULL)) {
g_print ("Wrong arguments\n");
break;
}
outputuri =
ensure_uri (generate_filename (container, vcodec, acodec));
transcode_file (inputuri, outputuri, prof);
gst_encoding_profile_unref (prof);
gst_caps_unref (acodec);
}
gst_caps_unref (vcodec);
}
gst_caps_unref (container);
}
} else {
/* Create the profile */
prof = create_profile_from_string (format, vformat, aformat);
if (G_UNLIKELY (prof == NULL)) {
g_print ("Encoding arguments are not valid !\n");
return 1;
}
/* Transcode file */
transcode_file (inputuri, outputuri, prof);
/* cleanup */
gst_encoding_profile_unref (prof);
}
return 0;
}