gstreamer/gst/nsf/gstnsf.c
2010-09-21 12:26:35 +02:00

645 lines
17 KiB
C

/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* (C) <2004> Johan Dahlin <johan@gnome.org>
* (C) <2006> Wim Taymans <wim@fluendo.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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstnsf.h"
#define GST_CAT_DEFAULT nsfdec_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
/* Nsfdec signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
#define DEFAULT_TUNE 0
#define DEFAULT_FILTER NSF_FILTER_NONE
enum
{
PROP_0,
PROP_TUNE,
PROP_FILTER,
};
static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-nsf")
);
static GstStaticPadTemplate src_templ = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-int, "
"endianness = (int) BYTE_ORDER, "
"signed = (boolean) TRUE, "
"width = (int) { 8, 16 }, "
"depth = (int) { 8, 16 }, "
"rate = (int) [ 8000, 48000 ], " "channels = (int) [ 1, 2 ]")
);
#define GST_TYPE_NSF_FILTER (gst_nsf_filter_get_type())
static GType
gst_nsf_filter_get_type (void)
{
static GType nsf_filter_type = 0;
static GEnumValue nsf_filter[] = {
{NSF_FILTER_NONE, "NSF_FILTER_NONE", "None"},
{NSF_FILTER_LOWPASS, "NSF_FILTER_LOWPASS", "Lowpass"},
{NSF_FILTER_WEIGHTED, "NSF_FILTER_WEIGHTED", "Weighted"},
{0, NULL, NULL},
};
if (!nsf_filter_type) {
nsf_filter_type = g_enum_register_static ("GstNsfFilter", nsf_filter);
}
return nsf_filter_type;
}
static void gst_nsfdec_base_init (gpointer g_class);
static void gst_nsfdec_class_init (GstNsfDec * klass);
static void gst_nsfdec_init (GstNsfDec * nsfdec);
static void gst_nsfdec_finalize (GObject * object);
static GstFlowReturn gst_nsfdec_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_nsfdec_sink_event (GstPad * pad, GstEvent * event);
static gboolean gst_nsfdec_src_convert (GstPad * pad, GstFormat src_format,
gint64 src_value, GstFormat * dest_format, gint64 * dest_value);
static gboolean gst_nsfdec_src_event (GstPad * pad, GstEvent * event);
static gboolean gst_nsfdec_src_query (GstPad * pad, GstQuery * query);
static void gst_nsfdec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_nsfdec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static GstElementClass *parent_class = NULL;
/* static guint gst_nsfdec_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_nsfdec_get_type (void)
{
static GType nsfdec_type = 0;
if (G_UNLIKELY (nsfdec_type == 0)) {
static const GTypeInfo nsfdec_info = {
sizeof (GstNsfDecClass),
gst_nsfdec_base_init,
NULL,
(GClassInitFunc) gst_nsfdec_class_init,
NULL,
NULL,
sizeof (GstNsfDec),
0,
(GInstanceInitFunc) gst_nsfdec_init,
NULL
};
nsfdec_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstNsfDec", &nsfdec_info,
(GTypeFlags) 0);
}
return nsfdec_type;
}
static void
gst_nsfdec_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details_simple (element_class, "Nsf decoder",
"Codec/Decoder/Audio",
"Using nosefart to decode NSF audio tunes",
"Johan Dahlin <johan@gnome.org>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_templ));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_templ));
}
static void
gst_nsfdec_class_init (GstNsfDec * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = GST_ELEMENT_CLASS (g_type_class_peek_parent (klass));
gobject_class->finalize = gst_nsfdec_finalize;
gobject_class->set_property = gst_nsfdec_set_property;
gobject_class->get_property = gst_nsfdec_get_property;
g_object_class_install_property (gobject_class, PROP_TUNE,
g_param_spec_int ("tune", "tune", "tune", 1, 100, 1, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_FILTER,
g_param_spec_enum ("filter", "filter", "filter", GST_TYPE_NSF_FILTER,
NSF_FILTER_NONE, G_PARAM_WRITABLE));
GST_DEBUG_CATEGORY_INIT (nsfdec_debug, "nsfdec", 0,
"NES sound file (nsf) decoder");
nsf_init ();
}
static void
gst_nsfdec_init (GstNsfDec * nsfdec)
{
nsfdec->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
gst_pad_set_query_function (nsfdec->sinkpad, NULL);
gst_pad_set_event_function (nsfdec->sinkpad, gst_nsfdec_sink_event);
gst_pad_set_chain_function (nsfdec->sinkpad, gst_nsfdec_chain);
gst_element_add_pad (GST_ELEMENT (nsfdec), nsfdec->sinkpad);
nsfdec->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
gst_pad_set_event_function (nsfdec->srcpad, gst_nsfdec_src_event);
gst_pad_set_query_function (nsfdec->srcpad, gst_nsfdec_src_query);
gst_pad_use_fixed_caps (nsfdec->srcpad);
gst_element_add_pad (GST_ELEMENT (nsfdec), nsfdec->srcpad);
nsfdec->nsf = NULL;
nsfdec->state = NSF_STATE_NEED_TUNE;
nsfdec->tune_buffer = NULL;
nsfdec->blocksize = 0;
nsfdec->frequency = 44100;
nsfdec->bits = 8;
nsfdec->stereo = FALSE;
nsfdec->channels = 1;
nsfdec->tune_number = DEFAULT_TUNE;
nsfdec->filter = DEFAULT_FILTER;
}
static void
gst_nsfdec_finalize (GObject * object)
{
GstNsfDec *nsfdec = GST_NSFDEC (object);
if (nsfdec->tune_buffer)
gst_buffer_unref (nsfdec->tune_buffer);
if (nsfdec->taglist)
gst_tag_list_free (nsfdec->taglist);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
nsfdec_negotiate (GstNsfDec * nsfdec)
{
GstCaps *allowed;
gboolean sign = TRUE;
gint width = 16, depth = 16;
GstStructure *structure;
int rate = 44100;
int channels = 1;
GstCaps *caps;
allowed = gst_pad_get_allowed_caps (nsfdec->srcpad);
if (!allowed)
goto nothing_allowed;
GST_DEBUG_OBJECT (nsfdec, "allowed caps: %" GST_PTR_FORMAT, allowed);
structure = gst_caps_get_structure (allowed, 0);
gst_structure_get_int (structure, "width", &width);
gst_structure_get_int (structure, "depth", &depth);
if (width && depth && width != depth)
goto wrong_width;
width = width | depth;
if (width) {
nsfdec->bits = width;
}
gst_structure_get_boolean (structure, "signed", &sign);
gst_structure_get_int (structure, "rate", &rate);
nsfdec->frequency = rate;
gst_structure_get_int (structure, "channels", &channels);
nsfdec->channels = channels;
nsfdec->stereo = (channels == 2);
caps = gst_caps_new_simple ("audio/x-raw-int",
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"signed", G_TYPE_BOOLEAN, TRUE,
"width", G_TYPE_INT, nsfdec->bits,
"depth", G_TYPE_INT, nsfdec->bits,
"rate", G_TYPE_INT, nsfdec->frequency,
"channels", G_TYPE_INT, nsfdec->channels, NULL);
gst_pad_set_caps (nsfdec->srcpad, caps);
gst_caps_unref (caps);
gst_caps_unref (allowed);
return TRUE;
nothing_allowed:
{
GST_DEBUG_OBJECT (nsfdec, "could not get allowed caps");
return FALSE;
}
wrong_width:
{
GST_DEBUG_OBJECT (nsfdec, "width %d and depth %d are different",
width, depth);
gst_caps_unref (allowed);
return FALSE;
}
}
static void
play_loop (GstPad * pad)
{
GstFlowReturn ret;
GstNsfDec *nsfdec;
GstBuffer *out;
gint64 value, offset, time;
GstFormat format;
nsfdec = GST_NSFDEC (gst_pad_get_parent (pad));
out = gst_buffer_new_and_alloc (nsfdec->blocksize);
gst_buffer_set_caps (out, GST_PAD_CAPS (pad));
nsf_frame (nsfdec->nsf);
apu_process (GST_BUFFER_DATA (out), nsfdec->blocksize / nsfdec->bps);
/* get offset in samples */
format = GST_FORMAT_DEFAULT;
gst_nsfdec_src_convert (nsfdec->srcpad,
GST_FORMAT_BYTES, nsfdec->total_bytes, &format, &offset);
GST_BUFFER_OFFSET (out) = offset;
/* get current timestamp */
format = GST_FORMAT_TIME;
gst_nsfdec_src_convert (nsfdec->srcpad,
GST_FORMAT_BYTES, nsfdec->total_bytes, &format, &time);
GST_BUFFER_TIMESTAMP (out) = time;
/* update position and get new timestamp to calculate duration */
nsfdec->total_bytes += nsfdec->blocksize;
/* get offset in samples */
format = GST_FORMAT_DEFAULT;
gst_nsfdec_src_convert (nsfdec->srcpad,
GST_FORMAT_BYTES, nsfdec->total_bytes, &format, &value);
GST_BUFFER_OFFSET_END (out) = value;
format = GST_FORMAT_TIME;
gst_nsfdec_src_convert (nsfdec->srcpad,
GST_FORMAT_BYTES, nsfdec->total_bytes, &format, &value);
GST_BUFFER_DURATION (out) = value - time;
if ((ret = gst_pad_push (nsfdec->srcpad, out)) != GST_FLOW_OK)
goto pause;
done:
gst_object_unref (nsfdec);
return;
/* ERRORS */
pause:
{
const gchar *reason = gst_flow_get_name (ret);
GST_DEBUG_OBJECT (nsfdec, "pausing task, reason %s", reason);
gst_pad_pause_task (pad);
if (ret == GST_FLOW_UNEXPECTED) {
/* perform EOS logic, FIXME, segment seek? */
gst_pad_push_event (pad, gst_event_new_eos ());
} else if (ret == GST_FLOW_NOT_LINKED || ret < GST_FLOW_UNEXPECTED) {
/* for fatal errors we post an error message */
GST_ELEMENT_ERROR (nsfdec, STREAM, FAILED,
(NULL), ("streaming task paused, reason %s", reason));
gst_pad_push_event (pad, gst_event_new_eos ());
}
goto done;
}
}
static gboolean
start_play_tune (GstNsfDec * nsfdec)
{
gboolean res;
nsfdec->nsf = nsf_load (NULL, GST_BUFFER_DATA (nsfdec->tune_buffer),
GST_BUFFER_SIZE (nsfdec->tune_buffer));
if (!nsfdec->nsf)
goto could_not_load;
if (!nsfdec_negotiate (nsfdec))
goto could_not_negotiate;
nsfdec->taglist = gst_tag_list_new ();
gst_tag_list_add (nsfdec->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_AUDIO_CODEC, "NES Sound Format", NULL);
if (nsfdec->nsf->artist_name)
gst_tag_list_add (nsfdec->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_ARTIST, nsfdec->nsf->artist_name, NULL);
if (nsfdec->nsf->song_name)
gst_tag_list_add (nsfdec->taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_TITLE, nsfdec->nsf->song_name, NULL);
gst_element_post_message (GST_ELEMENT_CAST (nsfdec),
gst_message_new_tag (GST_OBJECT (nsfdec),
gst_tag_list_copy (nsfdec->taglist)));
nsf_playtrack (nsfdec->nsf,
nsfdec->tune_number, nsfdec->frequency, nsfdec->bits, nsfdec->stereo);
nsf_setfilter (nsfdec->nsf, nsfdec->filter);
nsfdec->bps = (nsfdec->bits >> 3) * nsfdec->channels;
/* calculate the number of bytes we need to output after each call to
* nsf_frame(). */
nsfdec->blocksize =
nsfdec->bps * nsfdec->frequency / nsfdec->nsf->playback_rate;
gst_pad_push_event (nsfdec->srcpad,
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, -1, 0));
res = gst_pad_start_task (nsfdec->srcpad,
(GstTaskFunction) play_loop, nsfdec->srcpad);
return res;
/* ERRORS */
could_not_load:
{
GST_ELEMENT_ERROR (nsfdec, LIBRARY, INIT,
("Could not load tune"), ("Could not load tune"));
return FALSE;
}
could_not_negotiate:
{
GST_ELEMENT_ERROR (nsfdec, CORE, NEGOTIATION,
("Could not negotiate format"), ("Could not negotiate format"));
return FALSE;
}
}
static gboolean
gst_nsfdec_sink_event (GstPad * pad, GstEvent * event)
{
GstNsfDec *nsfdec;
gboolean res;
nsfdec = GST_NSFDEC (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
res = start_play_tune (nsfdec);
break;
case GST_EVENT_NEWSEGMENT:
res = FALSE;
break;
default:
res = FALSE;
break;
}
gst_event_unref (event);
gst_object_unref (nsfdec);
return res;
}
static GstFlowReturn
gst_nsfdec_chain (GstPad * pad, GstBuffer * buffer)
{
GstNsfDec *nsfdec;
nsfdec = GST_NSFDEC (gst_pad_get_parent (pad));
/* collect all data, we start doing something when we get an EOS
* event */
if (nsfdec->tune_buffer) {
nsfdec->tune_buffer = gst_buffer_join (nsfdec->tune_buffer, buffer);
} else {
nsfdec->tune_buffer = buffer;
}
gst_object_unref (nsfdec);
return GST_FLOW_OK;
}
static gboolean
gst_nsfdec_src_convert (GstPad * pad, GstFormat src_format, gint64 src_value,
GstFormat * dest_format, gint64 * dest_value)
{
gboolean res = TRUE;
guint scale = 1;
GstNsfDec *nsfdec;
nsfdec = GST_NSFDEC (gst_pad_get_parent (pad));
if (src_format == *dest_format) {
*dest_value = src_value;
return TRUE;
}
switch (src_format) {
case GST_FORMAT_BYTES:
switch (*dest_format) {
case GST_FORMAT_DEFAULT:
if (nsfdec->bps == 0)
return FALSE;
*dest_value = src_value / nsfdec->bps;
break;
case GST_FORMAT_TIME:
{
gint byterate = nsfdec->bps * nsfdec->frequency;
if (byterate == 0)
return FALSE;
*dest_value =
gst_util_uint64_scale_int (src_value, GST_SECOND, byterate);
break;
}
default:
res = FALSE;
}
break;
case GST_FORMAT_DEFAULT:
switch (*dest_format) {
case GST_FORMAT_BYTES:
*dest_value = src_value * nsfdec->bps;
break;
case GST_FORMAT_TIME:
if (nsfdec->frequency == 0)
return FALSE;
*dest_value =
gst_util_uint64_scale_int (src_value, GST_SECOND,
nsfdec->frequency);
break;
default:
res = FALSE;
}
break;
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_BYTES:
scale = nsfdec->bps;
/* fallthrough */
case GST_FORMAT_DEFAULT:
*dest_value =
gst_util_uint64_scale_int (src_value, scale * nsfdec->frequency,
GST_SECOND);
break;
default:
res = FALSE;
}
break;
default:
res = FALSE;
}
return res;
}
static gboolean
gst_nsfdec_src_event (GstPad * pad, GstEvent * event)
{
gboolean res = FALSE;
GstNsfDec *nsfdec;
nsfdec = GST_NSFDEC (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
default:
break;
}
gst_event_unref (event);
gst_object_unref (nsfdec);
return res;
}
static gboolean
gst_nsfdec_src_query (GstPad * pad, GstQuery * query)
{
gboolean res = TRUE;
GstNsfDec *nsfdec;
nsfdec = GST_NSFDEC (gst_pad_get_parent (pad));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
{
GstFormat format;
gint64 current;
gst_query_parse_position (query, &format, NULL);
/* we only know about our bytes, convert to requested format */
res &= gst_nsfdec_src_convert (pad,
GST_FORMAT_BYTES, nsfdec->total_bytes, &format, &current);
if (res) {
gst_query_set_position (query, format, current);
}
break;
}
default:
res = gst_pad_query_default (pad, query);
break;
}
gst_object_unref (nsfdec);
return res;
}
static void
gst_nsfdec_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
GstNsfDec *nsfdec;
nsfdec = GST_NSFDEC (object);
switch (prop_id) {
case PROP_TUNE:
nsfdec->tune_number = g_value_get_int (value);
break;
case PROP_FILTER:
nsfdec->filter = g_value_get_enum (value);
if (nsfdec->nsf)
nsf_setfilter (nsfdec->nsf, nsfdec->filter);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
return;
}
}
static void
gst_nsfdec_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstNsfDec *nsfdec;
nsfdec = GST_NSFDEC (object);
switch (prop_id) {
case PROP_TUNE:
g_value_set_int (value, nsfdec->tune_number);
break;
case PROP_FILTER:
g_value_set_enum (value, nsfdec->filter);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "nsfdec", GST_RANK_PRIMARY,
GST_TYPE_NSFDEC);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR,
"nsf",
"Uses nosefart to decode .nsf files",
plugin_init, VERSION, "GPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);