Commit f0edb5fb authored by Alexander Schrab's avatar Alexander Schrab Committed by Sebastian Dröge
Browse files

mulawenc: change to gstaudioencoder base, added bitrate tags

parent 2e80c0d2
......@@ -46,199 +46,84 @@ enum
ARG_0
};
static gboolean gst_mulawenc_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static GstFlowReturn gst_mulawenc_chain (GstPad * pad, GstObject * parent,
static gboolean gst_mulawenc_start (GstAudioEncoder * audioenc);
static gboolean gst_mulawenc_set_format (GstAudioEncoder * enc,
GstAudioInfo * info);
static GstFlowReturn gst_mulawenc_handle_frame (GstAudioEncoder * enc,
GstBuffer * buffer);
static void gst_mulawenc_set_tags (GstMuLawEnc * mulawenc);
#define gst_mulawenc_parent_class parent_class
G_DEFINE_TYPE (GstMuLawEnc, gst_mulawenc, GST_TYPE_ELEMENT);
G_DEFINE_TYPE (GstMuLawEnc, gst_mulawenc, GST_TYPE_AUDIO_ENCODER);
/*static guint gst_stereo_signals[LAST_SIGNAL] = { 0 }; */
static GstCaps *
mulawenc_getcaps (GstPad * pad, GstCaps * filter)
static gboolean
gst_mulawenc_start (GstAudioEncoder * audioenc)
{
GstMuLawEnc *mulawenc;
GstPad *otherpad;
GstCaps *othercaps, *result;
GstCaps *templ;
const gchar *name;
gint i;
mulawenc = GST_MULAWENC (GST_PAD_PARENT (pad));
/* figure out the name of the caps we are going to return */
if (pad == mulawenc->srcpad) {
name = "audio/x-mulaw";
otherpad = mulawenc->sinkpad;
} else {
name = "audio/x-raw";
otherpad = mulawenc->srcpad;
}
/* get caps from the peer, this can return NULL when there is no peer */
othercaps = gst_pad_peer_query_caps (otherpad, NULL);
/* get the template caps to make sure we return something acceptable */
templ = gst_pad_get_pad_template_caps (pad);
if (othercaps) {
/* there was a peer */
othercaps = gst_caps_make_writable (othercaps);
/* go through the caps and remove the fields we don't want */
for (i = 0; i < gst_caps_get_size (othercaps); i++) {
GstStructure *structure;
structure = gst_caps_get_structure (othercaps, i);
/* adjust the name */
gst_structure_set_name (structure, name);
if (pad == mulawenc->srcpad) {
/* remove the fields we don't want */
gst_structure_remove_fields (structure, "format", NULL);
} else {
/* add fixed fields */
gst_structure_set (structure, "format", G_TYPE_STRING,
GST_AUDIO_NE (S16), NULL);
}
}
/* filter against the allowed caps of the pad to return our result */
result = gst_caps_intersect (othercaps, templ);
gst_caps_unref (othercaps);
gst_caps_unref (templ);
} else {
/* there was no peer, return the template caps */
result = templ;
}
if (filter && result) {
GstCaps *temp;
GstMuLawEnc *mulawenc = GST_MULAWENC (audioenc);
temp = gst_caps_intersect (result, filter);
gst_caps_unref (result);
result = temp;
}
mulawenc->channels = 0;
mulawenc->rate = 0;
return result;
return TRUE;
}
static gboolean
gst_mulawenc_query (GstPad * pad, GstObject * parent, GstQuery * query)
static void
gst_mulawenc_set_tags (GstMuLawEnc * mulawenc)
{
gboolean res;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:
{
GstCaps *filter, *caps;
gst_query_parse_caps (query, &filter);
caps = mulawenc_getcaps (pad, filter);
gst_query_set_caps_result (query, caps);
gst_caps_unref (caps);
res = TRUE;
break;
}
default:
res = gst_pad_query_default (pad, parent, query);
break;
}
return res;
GstTagList *taglist;
guint bitrate;
/* bitrate of mulaw is 8 bits/sample * sample rate * number of channels */
bitrate = 8 * mulawenc->rate * mulawenc->channels;
taglist = gst_tag_list_new_empty ();
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_MAXIMUM_BITRATE, bitrate, NULL);
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_MINIMUM_BITRATE, bitrate, NULL);
gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE,
GST_TAG_BITRATE, bitrate, NULL);
gst_audio_encoder_merge_tags (GST_AUDIO_ENCODER (mulawenc),
taglist, GST_TAG_MERGE_REPLACE);
gst_tag_list_unref (taglist);
}
static gboolean
mulawenc_setcaps (GstMuLawEnc * mulawenc, GstCaps * caps)
gst_mulawenc_set_format (GstAudioEncoder * audioenc, GstAudioInfo * info)
{
GstStructure *structure;
GstCaps *base_caps;
GstStructure *structure;
GstMuLawEnc *mulawenc = GST_MULAWENC (audioenc);
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "channels", &mulawenc->channels);
gst_structure_get_int (structure, "rate", &mulawenc->rate);
mulawenc->rate = info->rate;
mulawenc->channels = info->channels;
base_caps = gst_pad_get_pad_template_caps (mulawenc->srcpad);
base_caps =
gst_pad_get_pad_template_caps (GST_AUDIO_ENCODER_SRC_PAD (audioenc));
g_assert (base_caps);
base_caps = gst_caps_make_writable (base_caps);
g_assert (base_caps);
structure = gst_caps_get_structure (base_caps, 0);
g_assert (structure);
gst_structure_set (structure, "rate", G_TYPE_INT, mulawenc->rate, NULL);
gst_structure_set (structure, "channels", G_TYPE_INT, mulawenc->channels,
NULL);
gst_pad_set_caps (mulawenc->srcpad, base_caps);
gst_caps_unref (base_caps);
return TRUE;
}
static void
gst_mulawenc_class_init (GstMuLawEncClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&mulaw_enc_src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&mulaw_enc_sink_factory));
gst_element_class_set_static_metadata (element_class, "Mu Law audio encoder",
"Codec/Encoder/Audio",
"Convert 16bit PCM to 8bit mu law",
"Zaheer Abbas Merali <zaheerabbas at merali dot org>");
}
static void
gst_mulawenc_init (GstMuLawEnc * mulawenc)
{
mulawenc->sinkpad =
gst_pad_new_from_static_template (&mulaw_enc_sink_factory, "sink");
gst_pad_set_query_function (mulawenc->sinkpad, gst_mulawenc_query);
gst_pad_set_event_function (mulawenc->sinkpad, gst_mulawenc_event);
gst_pad_set_chain_function (mulawenc->sinkpad, gst_mulawenc_chain);
gst_element_add_pad (GST_ELEMENT (mulawenc), mulawenc->sinkpad);
mulawenc->srcpad =
gst_pad_new_from_static_template (&mulaw_enc_src_factory, "src");
gst_pad_set_query_function (mulawenc->srcpad, gst_mulawenc_query);
gst_element_add_pad (GST_ELEMENT (mulawenc), mulawenc->srcpad);
/* init rest */
mulawenc->channels = 0;
mulawenc->rate = 0;
}
static gboolean
gst_mulawenc_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstMuLawEnc *mulawenc;
gboolean res;
mulawenc = GST_MULAWENC (parent);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:
{
GstCaps *caps;
gst_mulawenc_set_tags (mulawenc);
gst_event_parse_caps (event, &caps);
mulawenc_setcaps (mulawenc, caps);
gst_event_unref (event);
res = TRUE;
break;
}
default:
res = gst_pad_event_default (pad, parent, event);
break;
}
return res;
return gst_audio_encoder_set_output_format (audioenc, base_caps);
}
static GstFlowReturn
gst_mulawenc_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
gst_mulawenc_handle_frame (GstAudioEncoder * audioenc, GstBuffer * buffer)
{
GstMuLawEnc *mulawenc;
GstMapInfo inmap, outmap;
......@@ -248,9 +133,13 @@ gst_mulawenc_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
guint mulaw_size;
GstBuffer *outbuf;
GstFlowReturn ret;
GstClockTime timestamp, duration;
mulawenc = GST_MULAWENC (parent);
if (!buffer) {
ret = GST_FLOW_OK;
goto done;
}
mulawenc = GST_MULAWENC (audioenc);
if (!mulawenc->rate || !mulawenc->channels)
goto not_negotiated;
......@@ -261,33 +150,19 @@ gst_mulawenc_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
mulaw_size = linear_size / 2;
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
outbuf = gst_audio_encoder_allocate_output_buffer (audioenc, mulaw_size);
outbuf = gst_buffer_new_allocate (NULL, mulaw_size, NULL);
if (duration == -1) {
duration = gst_util_uint64_scale_int (mulaw_size,
GST_SECOND, mulawenc->rate * mulawenc->channels);
}
g_assert (outbuf);
gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
mulaw_data = outmap.data;
/* copy discont flag */
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT))
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
GST_BUFFER_DURATION (outbuf) = duration;
mulaw_encode (linear_data, mulaw_data, mulaw_size);
gst_buffer_unmap (outbuf, &outmap);
gst_buffer_unmap (buffer, &inmap);
gst_buffer_unref (buffer);
ret = gst_pad_push (mulawenc->srcpad, outbuf);
ret = gst_audio_encoder_finish_frame (audioenc, outbuf, -1);
done:
......@@ -297,7 +172,36 @@ not_negotiated:
{
GST_DEBUG_OBJECT (mulawenc, "no format negotiated");
ret = GST_FLOW_NOT_NEGOTIATED;
gst_buffer_unref (buffer);
goto done;
}
}
static void
gst_mulawenc_class_init (GstMuLawEncClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstAudioEncoderClass *audio_encoder_class = GST_AUDIO_ENCODER_CLASS (klass);
audio_encoder_class->start = GST_DEBUG_FUNCPTR (gst_mulawenc_start);
audio_encoder_class->set_format = GST_DEBUG_FUNCPTR (gst_mulawenc_set_format);
audio_encoder_class->handle_frame =
GST_DEBUG_FUNCPTR (gst_mulawenc_handle_frame);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&mulaw_enc_src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&mulaw_enc_sink_factory));
gst_element_class_set_static_metadata (element_class, "Mu Law audio encoder",
"Codec/Encoder/Audio",
"Convert 16bit PCM to 8bit mu law",
"Zaheer Abbas Merali <zaheerabbas at merali dot org>");
}
static void
gst_mulawenc_init (GstMuLawEnc * mulawenc)
{
}
......@@ -22,9 +22,9 @@
#define __GST_MULAWENCODE_H__
#include <gst/gst.h>
#include <gst/audio/gstaudioencoder.h>
G_BEGIN_DECLS
#define GST_TYPE_MULAWENC \
(gst_mulawenc_get_type())
#define GST_MULAWENC(obj) \
......@@ -35,25 +35,23 @@ G_BEGIN_DECLS
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MULAWENC))
#define GST_IS_MULAWENC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MULAWENC))
typedef struct _GstMuLawEnc GstMuLawEnc;
typedef struct _GstMuLawEncClass GstMuLawEncClass;
struct _GstMuLawEnc {
GstElement element;
GstPad *sinkpad,*srcpad;
struct _GstMuLawEnc
{
GstAudioEncoder element;
gint channels;
gint rate;
};
struct _GstMuLawEncClass {
GstElementClass parent_class;
struct _GstMuLawEncClass
{
GstAudioEncoderClass parent_class;
};
GType gst_mulawenc_get_type(void);
GType gst_mulawenc_get_type (void);
G_END_DECLS
#endif /* __GST_STEREO_H__ */
......@@ -134,6 +134,7 @@ check_PROGRAMS = \
elements/matroskamux \
elements/matroskaparse \
elements/mpegaudioparse \
elements/mulawenc \
elements/multifile \
elements/qtmux \
elements/rganalysis \
......
/* GStreamer MulawEnc unit tests
*
* 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 <gst/check/gstcheck.h>
GList *buffers = NULL;
GstPad *mysrcpad, *mysinkpad;
GstElement *mulawenc = NULL;
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-mulaw," "rate = (int) 8000," "channels = (int) 1")
);
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw,"
"format = (string) S16LE, "
"rate = (int) 8000, "
"channels = (int) 1, " "layout = (string)interleaved")
);
static void
mulawenc_setup (void)
{
GstCaps *src_caps;
src_caps = gst_caps_from_string ("audio/x-raw,"
"format = (string) S16LE, "
"rate = (int) 8000, "
"channels = (int) 1, " "layout = (string)interleaved");
GST_DEBUG ("%s", __FUNCTION__);
mulawenc = gst_check_setup_element ("mulawenc");
mysrcpad = gst_check_setup_src_pad (mulawenc, &srctemplate);
mysinkpad = gst_check_setup_sink_pad (mulawenc, &sinktemplate);
gst_pad_set_active (mysrcpad, TRUE);
gst_pad_set_active (mysinkpad, TRUE);
gst_pad_set_caps (mysrcpad, src_caps);
gst_caps_unref (src_caps);
}
static void
buffer_unref (void *buffer, void *user_data)
{
gst_buffer_unref (GST_BUFFER (buffer));
}
static void
mulawenc_teardown (void)
{
/* free encoded buffers */
g_list_foreach (buffers, buffer_unref, NULL);
g_list_free (buffers);
buffers = NULL;
gst_pad_set_active (mysrcpad, FALSE);
gst_pad_set_active (mysinkpad, FALSE);
gst_object_unref (mysrcpad);
gst_object_unref (mysinkpad);
gst_check_teardown_src_pad (mulawenc);
gst_check_teardown_sink_pad (mulawenc);
gst_check_teardown_element (mulawenc);
mulawenc = NULL;
}
static gboolean
check_for_maximum_bitrate (GstPad * pad, GstEvent ** eventp, gpointer user_data)
{
gboolean *found_maximum_bitrate = (gboolean *) user_data;
GstEvent *event = *eventp;
if (event->type == GST_EVENT_TAG) {
GstTagList *taglist = NULL;
guint value = 0;
gst_event_parse_tag (event, &taglist);
fail_unless (taglist != NULL);
fail_unless (gst_tag_list_get_uint (taglist, GST_TAG_MAXIMUM_BITRATE,
&value));
/* bitrate needs to be exactly sample rate * channels * 8 */
fail_unless (value == 8000 * 1 * 8);
*found_maximum_bitrate = TRUE;
}
return TRUE;
}
GST_START_TEST (test_one_buffer)
{
GstBuffer *buffer;
int buf_size = 4096;
unsigned char *dp;
fail_unless (gst_element_set_state (mulawenc, GST_STATE_PLAYING) ==
GST_STATE_CHANGE_SUCCESS, "could not change state to playing");
buffer = gst_buffer_new ();
dp = g_malloc (buf_size);
gst_buffer_append_memory (buffer,
gst_memory_new_wrapped (0, dp, buf_size, 0, buf_size, dp, g_free));
ASSERT_BUFFER_REFCOUNT (buffer, "buffer", 1);
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
fail_unless (g_list_length (buffers) == 1);
fail_unless (gst_buffer_get_size (GST_BUFFER (g_list_first (buffers)->data)));
}
GST_END_TEST;
GST_START_TEST (test_tags)
{
GstBuffer *buffer;
int buf_size = 4096;
unsigned char *dp;
gboolean found_maximum_bitrate = FALSE;
fail_unless (gst_element_set_state (mulawenc, GST_STATE_PLAYING) ==
GST_STATE_CHANGE_SUCCESS, "could not change state to playing");
buffer = gst_buffer_new ();
dp = g_malloc (buf_size);
gst_buffer_append_memory (buffer,
gst_memory_new_wrapped (0, dp, buf_size, 0, buf_size, dp, g_free));
ASSERT_BUFFER_REFCOUNT (buffer, "buffer", 1);
fail_unless (gst_pad_push (mysrcpad, buffer) == GST_FLOW_OK);
gst_pad_sticky_events_foreach (mysinkpad, check_for_maximum_bitrate,
&found_maximum_bitrate);
fail_unless (found_maximum_bitrate);
}
GST_END_TEST;
static Suite *
mulawenc_suite (void)
{
Suite *s = suite_create ("mulawenc");
TCase *tc_chain = tcase_create ("mulawenc");
tcase_add_checked_fixture (tc_chain, mulawenc_setup, mulawenc_teardown);
suite_add_tcase (s, tc_chain);
tcase_add_test (tc_chain, test_one_buffer);
tcase_add_test (tc_chain, test_tags);
return s;
}
GST_CHECK_MAIN (mulawenc)
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