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Implement spek_audio_open()

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This commit is contained in:
Alexander Kojevnikov 2010-06-30 12:39:06 +10:00
parent 1ea744502a
commit 90e861a77a
8 changed files with 158 additions and 44 deletions
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2
configure.ac
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@ -24,7 +24,7 @@ AM_PROG_VALAC([0.7.0])
AC_PROG_INSTALL
AC_PROG_INTLTOOL([0.35])
pkg_modules="gtk+-2.0 >= 2.14.0 gstreamer-0.10 >= 0.10.17"
pkg_modules="gtk+-2.0 >= 2.14.0 gstreamer-0.10 >= 0.10.17 libavformat libavcodec"
SPEK_PACKAGES="--pkg gtk+-2.0 --pkg gstreamer-0.10"
PKG_CHECK_MODULES(SPEK, [$pkg_modules])
AC_SUBST(SPEK_CFLAGS)

3
src/Makefile.am
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@ -26,3 +26,6 @@ VALAFLAGS = \
spek_LDADD = \
$(SPEK_LIBS) \
$(IGE_MAC_LIBS)
EXTRA_DIST = \
spek-audio.h

64
src/spek-audio.c
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@ -18,5 +18,67 @@
#include "spek-audio.h"
void spek_audio_open (const char *file_name) {
void spek_audio_init () {
av_register_all ();
}
SpekAudioContext * spek_audio_open (const char *file_name) {
SpekAudioContext *cx;
int i;
cx = g_new0 (SpekAudioContext, 1);
cx->file_name = g_strdup (file_name);
if (av_open_input_file (&cx->format_context, file_name, NULL, 0, NULL) != 0) {
/* TODO
*/
return cx;
}
if (av_find_stream_info (cx->format_context)) {
/* TODO
*/
return cx;
}
cx->audio_stream = -1;
for (i = 0; i < cx->format_context->nb_streams; i++) {
if (cx->format_context->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO) {
cx->audio_stream = i;
break;
}
}
if (cx->audio_stream == -1) {
/* TODO
*/
return cx;
}
cx->codec_context = cx->format_context->streams[cx->audio_stream]->codec;
cx->bit_rate = cx->codec_context->bit_rate;
cx->sample_rate = cx->codec_context->sample_rate;
cx->channels = cx->codec_context->channels;
cx->codec = avcodec_find_decoder (cx->codec_context->codec_id);
if (cx->codec == NULL) {
/* TODO
*/
return cx;
}
if (avcodec_open (cx->codec_context, cx->codec) < 0) {
/* TODO
*/
return cx;
}
return cx;
}
void spek_audio_close (SpekAudioContext *cx) {
if (cx->file_name != NULL) {
g_free (cx->file_name);
}
if (cx->codec_context != NULL) {
avcodec_close (cx->codec_context);
}
if (cx->format_context != NULL) {
av_close_input_file (cx->format_context);
}
g_free (cx);
}

22
src/spek-audio.h
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@ -19,6 +19,26 @@
#ifndef __SPEK_AUDIO_H__
#define __SPEK_AUDIO_H__
void spek_audio_open (const char *file_name);
#include <glib.h>
#include <libavformat/avformat.h>
#include <libavcodec/avcodec.h>
typedef struct {
AVFormatContext *format_context;
gint audio_stream;
AVCodecContext *codec_context;
AVCodec *codec;
/* Exposed properties
*/
gchar *file_name;
gint bit_rate;
gint sample_rate;
gint channels;
} SpekAudioContext;
void spek_audio_init ();
SpekAudioContext * spek_audio_open (const char *file_name);
void spek_audio_close (SpekAudioContext *cx);
#endif

22
src/spek-pipeline.vala
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@ -18,15 +18,27 @@
namespace Spek {
public class Pipeline {
public string file_name { get; private set; }
public string audio_codec { get; private set; }
private Audio.Context cx;
public Pipeline (string file_name) {
this.file_name = file_name;
cx = new Audio.Context (file_name);
// TODO: check for errors
}
public void open () {
Audio.open (file_name);
public string file_name {
get { return cx.file_name; }
}
public int bit_rate {
get { return cx.bit_rate; }
}
public int sample_rate {
get { return cx.sample_rate; }
}
public int channels {
get { return cx.channels; }
}
}
}

5
src/spek-spectrogram.vala
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@ -62,6 +62,11 @@ namespace Spek {
public void open (string file_name) {
this.file_name = file_name;
this.info = "";
// TODO
var pipeline = new Pipeline (file_name);
print ("%s:\nbr=%i sr=%i ch=%i\n\n", pipeline.file_name, pipeline.bit_rate, pipeline.sample_rate, pipeline.channels);
start ();
}

71
src/spek.vala
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@ -16,45 +16,46 @@
* along with Spek. If not, see <http://www.gnu.org/licenses/>.
*/
using Spek;
namespace Spek {
bool version = false;
[CCode (array_length = false, array_null_terminated = true)]
string[] files = null;
bool version = false;
[CCode (array_length = false, array_null_terminated = true)]
string[] files = null;
const OptionEntry[] options = {
{ "version", 'V', 0, OptionArg.NONE, ref version, N_("Display the version and exit"), null },
{ "", 0, 0, OptionArg.FILENAME_ARRAY, ref files, null, null },
{ null }
};
const OptionEntry[] options = {
{ "version", 'V', 0, OptionArg.NONE, ref version, N_("Display the version and exit"), null },
{ "", 0, 0, OptionArg.FILENAME_ARRAY, ref files, null, null },
{ null }
};
int main (string[] args) {
Intl.bindtextdomain (Config.GETTEXT_PACKAGE, Config.LOCALEDIR);
Intl.bind_textdomain_codeset (Config.GETTEXT_PACKAGE, "UTF-8");
Intl.textdomain (Config.GETTEXT_PACKAGE);
int main (string[] args) {
Intl.bindtextdomain (Config.GETTEXT_PACKAGE, Config.LOCALEDIR);
Intl.bind_textdomain_codeset (Config.GETTEXT_PACKAGE, "UTF-8");
Intl.textdomain (Config.GETTEXT_PACKAGE);
try {
Gtk.init_with_args (ref args, _("[FILE]"), (OptionEntry[]) options, Config.GETTEXT_PACKAGE);
} catch (Error e) {
print (e.message);
print ("\n");
print (_("Run `%s --help` to see a full list of available command line options.\n"), args[0]);
return 1;
}
try {
Gtk.init_with_args (ref args, _("[FILE]"), (OptionEntry[]) options, Config.GETTEXT_PACKAGE);
} catch (Error e) {
print (e.message);
print ("\n");
print (_("Run `%s --help` to see a full list of available command line options.\n"), args[0]);
return 1;
}
if (version) {
print (_("%s version %s\n"), Config.PACKAGE_NAME, Config.PACKAGE_VERSION);
return 0;
}
if (version) {
print (_("%s version %s\n"), Config.PACKAGE_NAME, Config.PACKAGE_VERSION);
if (files != null && files.length != 1) {
print (_("Specify a single file\n"));
return 1;
}
Audio.init ();
Gst.init (ref args);
var window = new Window (files == null ? null : files[0]);
Gtk.main ();
window.destroy ();
return 0;
}
if (files != null && files.length != 1) {
print (_("Specify a single file\n"));
return 1;
}
Gst.init (ref args);
var window = new Window (files == null ? null : files[0]);
Gtk.main ();
window.destroy ();
return 0;
}
}

13
vapi/spek-audio.vapi
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@ -1,4 +1,15 @@
[CCode (cprefix = "SpekAudio", lower_case_cprefix = "spek_audio_", cheader_filename = "spek-audio.h")]
namespace Spek.Audio {
public static void open (string file_name);
[Compact]
[CCode (free_function = "spek_audio_close")]
public class Context {
public string file_name;
public int bit_rate;
public int sample_rate;
public int channels;
[CCode (cname = "spek_audio_open")]
public Context (string file_name);
}
public static void init ();
}