mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-03 13:16:04 +00:00
mulawdec: change base class to GstAudioDecoder
https://bugzilla.gnome.org/show_bug.cgi?id=698894
This commit is contained in:
Alexander Schrab
Sebastian Dröge
parent
6b153ce385
commit
3ec9673dfc
|
|
@ -33,6 +33,11 @@
|
|||
extern GstStaticPadTemplate mulaw_dec_src_factory;
|
||||
extern GstStaticPadTemplate mulaw_dec_sink_factory;
|
||||
|
||||
static gboolean gst_mulawdec_set_format (GstAudioDecoder * dec, GstCaps * caps);
|
||||
static GstFlowReturn gst_mulawdec_handle_frame (GstAudioDecoder * dec,
|
||||
GstBuffer * buffer);
|
||||
|
||||
|
||||
/* Stereo signals and args */
|
||||
enum
|
||||
{
|
||||
|
|
@ -45,278 +50,109 @@ enum
|
|||
ARG_0
|
||||
};
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_mulawdec_change_state (GstElement * element, GstStateChange transition);
|
||||
|
||||
static gboolean gst_mulawdec_event (GstPad * pad, GstObject * parent,
|
||||
GstEvent * event);
|
||||
static GstFlowReturn gst_mulawdec_chain (GstPad * pad, GstObject * parent,
|
||||
GstBuffer * buffer);
|
||||
|
||||
#define gst_mulawdec_parent_class parent_class
|
||||
G_DEFINE_TYPE (GstMuLawDec, gst_mulawdec, GST_TYPE_ELEMENT);
|
||||
G_DEFINE_TYPE (GstMuLawDec, gst_mulawdec, GST_TYPE_AUDIO_DECODER);
|
||||
|
||||
static gboolean
|
||||
mulawdec_setcaps (GstMuLawDec * mulawdec, GstCaps * caps)
|
||||
gst_mulawdec_set_format (GstAudioDecoder * dec, GstCaps * caps)
|
||||
{
|
||||
GstMuLawDec *mulawdec = GST_MULAWDEC (dec);
|
||||
GstStructure *structure;
|
||||
int rate, channels;
|
||||
gboolean ret;
|
||||
GstCaps *outcaps;
|
||||
GstAudioInfo info;
|
||||
|
||||
structure = gst_caps_get_structure (caps, 0);
|
||||
ret = gst_structure_get_int (structure, "rate", &rate);
|
||||
ret = ret && gst_structure_get_int (structure, "channels", &channels);
|
||||
if (!ret)
|
||||
return FALSE;
|
||||
if (!structure) {
|
||||
GST_ERROR ("failed to get structure from caps");
|
||||
goto error_failed_get_structure;
|
||||
}
|
||||
|
||||
if (!gst_structure_get_int (structure, "rate", &rate)) {
|
||||
GST_ERROR ("failed to find field rate in input caps");
|
||||
goto error_failed_find_rate;
|
||||
}
|
||||
|
||||
if (!gst_structure_get_int (structure, "channels", &channels)) {
|
||||
GST_ERROR ("failed to find field channels in input caps");
|
||||
goto error_failed_find_channel;
|
||||
}
|
||||
|
||||
gst_audio_info_init (&info);
|
||||
gst_audio_info_set_format (&info, GST_AUDIO_FORMAT_S16, rate, channels, NULL);
|
||||
|
||||
outcaps = gst_audio_info_to_caps (&info);
|
||||
ret = gst_pad_set_caps (mulawdec->srcpad, outcaps);
|
||||
gst_caps_unref (outcaps);
|
||||
GST_DEBUG_OBJECT (mulawdec, "rate=%d, channels=%d", rate, channels);
|
||||
|
||||
if (ret) {
|
||||
GST_DEBUG_OBJECT (mulawdec, "rate=%d, channels=%d", rate, channels);
|
||||
mulawdec->info = info;
|
||||
}
|
||||
return ret;
|
||||
return gst_audio_decoder_set_output_format (dec, &info);
|
||||
|
||||
error_failed_find_channel:
|
||||
error_failed_find_rate:
|
||||
error_failed_get_structure:
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
static GstCaps *
|
||||
mulawdec_getcaps (GstPad * pad, GstCaps * filter)
|
||||
static GstFlowReturn
|
||||
gst_mulawdec_handle_frame (GstAudioDecoder * dec, GstBuffer * buffer)
|
||||
{
|
||||
GstMuLawDec *mulawdec;
|
||||
GstPad *otherpad;
|
||||
GstCaps *othercaps, *result;
|
||||
GstCaps *templ;
|
||||
const gchar *name;
|
||||
gint i;
|
||||
GstMapInfo inmap, outmap;
|
||||
gint16 *linear_data;
|
||||
guint8 *mulaw_data;
|
||||
gsize mulaw_size, linear_size;
|
||||
GstBuffer *outbuf;
|
||||
|
||||
mulawdec = GST_MULAWDEC (GST_PAD_PARENT (pad));
|
||||
|
||||
/* figure out the name of the caps we are going to return */
|
||||
if (pad == mulawdec->srcpad) {
|
||||
name = "audio/x-raw";
|
||||
otherpad = mulawdec->sinkpad;
|
||||
} else {
|
||||
name = "audio/x-mulaw";
|
||||
otherpad = mulawdec->srcpad;
|
||||
if (!gst_buffer_map (buffer, &inmap, GST_MAP_READ)) {
|
||||
GST_ERROR ("failed to map input buffer");
|
||||
goto error_failed_map_input_buffer;
|
||||
}
|
||||
/* 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);
|
||||
mulaw_data = inmap.data;
|
||||
mulaw_size = inmap.size;
|
||||
|
||||
if (othercaps) {
|
||||
/* there was a peer */
|
||||
othercaps = gst_caps_make_writable (othercaps);
|
||||
linear_size = mulaw_size * 2;
|
||||
|
||||
/* 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 == mulawdec->sinkpad) {
|
||||
/* remove the fields we don't want */
|
||||
gst_structure_remove_fields (structure, "format", "layout", NULL);
|
||||
} else {
|
||||
/* add fixed fields */
|
||||
gst_structure_set (structure, "format", G_TYPE_STRING,
|
||||
GST_AUDIO_NE (S16), "layout", G_TYPE_STRING, "interleaved", 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;
|
||||
outbuf = gst_audio_decoder_allocate_output_buffer (dec, linear_size);
|
||||
if (!gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE)) {
|
||||
GST_ERROR ("failed to map input buffer");
|
||||
goto error_failed_map_output_buffer;
|
||||
}
|
||||
if (filter && result) {
|
||||
GstCaps *temp;
|
||||
|
||||
temp = gst_caps_intersect (result, filter);
|
||||
gst_caps_unref (result);
|
||||
result = temp;
|
||||
}
|
||||
return result;
|
||||
}
|
||||
linear_data = (gint16 *) outmap.data;
|
||||
|
||||
static gboolean
|
||||
gst_mulawdec_query (GstPad * pad, GstObject * parent, GstQuery * query)
|
||||
{
|
||||
gboolean res;
|
||||
mulaw_decode (mulaw_data, linear_data, mulaw_size);
|
||||
|
||||
switch (GST_QUERY_TYPE (query)) {
|
||||
case GST_QUERY_CAPS:
|
||||
{
|
||||
GstCaps *filter, *caps;
|
||||
gst_buffer_unmap (outbuf, &outmap);
|
||||
gst_buffer_unmap (buffer, &inmap);
|
||||
|
||||
gst_query_parse_caps (query, &filter);
|
||||
caps = mulawdec_getcaps (pad, filter);
|
||||
gst_query_set_caps_result (query, caps);
|
||||
gst_caps_unref (caps);
|
||||
return gst_audio_decoder_finish_frame (dec, outbuf, -1);
|
||||
|
||||
res = TRUE;
|
||||
break;
|
||||
}
|
||||
default:
|
||||
res = gst_pad_query_default (pad, parent, query);
|
||||
break;
|
||||
}
|
||||
return res;
|
||||
error_failed_map_output_buffer:
|
||||
gst_buffer_unref (outbuf);
|
||||
|
||||
error_failed_map_input_buffer:
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_mulawdec_class_init (GstMuLawDecClass * klass)
|
||||
{
|
||||
GstElementClass *element_class = (GstElementClass *) klass;
|
||||
GstAudioDecoderClass *audiodec_class = GST_AUDIO_DECODER_CLASS (klass);
|
||||
|
||||
gst_element_class_add_pad_template (element_class,
|
||||
gst_static_pad_template_get (&mulaw_dec_src_factory));
|
||||
gst_element_class_add_pad_template (element_class,
|
||||
gst_static_pad_template_get (&mulaw_dec_sink_factory));
|
||||
|
||||
|
||||
audiodec_class->set_format = GST_DEBUG_FUNCPTR (gst_mulawdec_set_format);
|
||||
audiodec_class->handle_frame = GST_DEBUG_FUNCPTR (gst_mulawdec_handle_frame);
|
||||
|
||||
gst_element_class_set_static_metadata (element_class, "Mu Law audio decoder",
|
||||
"Codec/Decoder/Audio",
|
||||
"Convert 8bit mu law to 16bit PCM",
|
||||
"Zaheer Abbas Merali <zaheerabbas at merali dot org>");
|
||||
|
||||
element_class->change_state = GST_DEBUG_FUNCPTR (gst_mulawdec_change_state);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_mulawdec_init (GstMuLawDec * mulawdec)
|
||||
{
|
||||
mulawdec->sinkpad =
|
||||
gst_pad_new_from_static_template (&mulaw_dec_sink_factory, "sink");
|
||||
gst_pad_set_query_function (mulawdec->sinkpad, gst_mulawdec_query);
|
||||
gst_pad_set_event_function (mulawdec->sinkpad, gst_mulawdec_event);
|
||||
gst_pad_set_chain_function (mulawdec->sinkpad, gst_mulawdec_chain);
|
||||
gst_element_add_pad (GST_ELEMENT (mulawdec), mulawdec->sinkpad);
|
||||
|
||||
mulawdec->srcpad =
|
||||
gst_pad_new_from_static_template (&mulaw_dec_src_factory, "src");
|
||||
gst_pad_set_query_function (mulawdec->srcpad, gst_mulawdec_query);
|
||||
gst_element_add_pad (GST_ELEMENT (mulawdec), mulawdec->srcpad);
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_mulawdec_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
||||
{
|
||||
GstMuLawDec *mulawdec;
|
||||
gboolean res;
|
||||
|
||||
mulawdec = GST_MULAWDEC (parent);
|
||||
|
||||
switch (GST_EVENT_TYPE (event)) {
|
||||
case GST_EVENT_CAPS:
|
||||
{
|
||||
GstCaps *caps;
|
||||
|
||||
gst_event_parse_caps (event, &caps);
|
||||
mulawdec_setcaps (mulawdec, caps);
|
||||
gst_event_unref (event);
|
||||
|
||||
res = TRUE;
|
||||
break;
|
||||
}
|
||||
default:
|
||||
res = gst_pad_event_default (pad, parent, event);
|
||||
break;
|
||||
}
|
||||
return res;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_mulawdec_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
|
||||
{
|
||||
GstMuLawDec *mulawdec;
|
||||
GstMapInfo inmap, outmap;
|
||||
gint16 *linear_data;
|
||||
guint8 *mulaw_data;
|
||||
gsize mulaw_size, linear_size;
|
||||
GstBuffer *outbuf;
|
||||
GstFlowReturn ret;
|
||||
|
||||
mulawdec = GST_MULAWDEC (parent);
|
||||
|
||||
if (G_UNLIKELY (!GST_AUDIO_INFO_IS_VALID (&mulawdec->info)))
|
||||
goto not_negotiated;
|
||||
|
||||
gst_buffer_map (buffer, &inmap, GST_MAP_READ);
|
||||
mulaw_data = inmap.data;
|
||||
mulaw_size = inmap.size;
|
||||
|
||||
linear_size = mulaw_size * 2;
|
||||
|
||||
outbuf = gst_buffer_new_allocate (NULL, linear_size, NULL);
|
||||
gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
|
||||
linear_data = (gint16 *) 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) = GST_BUFFER_TIMESTAMP (buffer);
|
||||
if (GST_BUFFER_DURATION_IS_VALID (buffer)) {
|
||||
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
|
||||
} else {
|
||||
GST_BUFFER_DURATION (outbuf) = gst_util_uint64_scale_int (GST_SECOND,
|
||||
linear_size, GST_AUDIO_INFO_RATE (&mulawdec->info) *
|
||||
GST_AUDIO_INFO_BPF (&mulawdec->info));
|
||||
}
|
||||
|
||||
mulaw_decode (mulaw_data, linear_data, mulaw_size);
|
||||
|
||||
gst_buffer_unmap (outbuf, &outmap);
|
||||
gst_buffer_unmap (buffer, &inmap);
|
||||
gst_buffer_unref (buffer);
|
||||
|
||||
ret = gst_pad_push (mulawdec->srcpad, outbuf);
|
||||
|
||||
return ret;
|
||||
|
||||
/* ERRORS */
|
||||
not_negotiated:
|
||||
{
|
||||
GST_WARNING_OBJECT (mulawdec, "no input format set: not-negotiated");
|
||||
gst_buffer_unref (buffer);
|
||||
return GST_FLOW_NOT_NEGOTIATED;
|
||||
}
|
||||
}
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_mulawdec_change_state (GstElement * element, GstStateChange transition)
|
||||
{
|
||||
GstStateChangeReturn ret;
|
||||
GstMuLawDec *dec = GST_MULAWDEC (element);
|
||||
|
||||
switch (transition) {
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
||||
if (ret != GST_STATE_CHANGE_SUCCESS)
|
||||
return ret;
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
||||
gst_audio_info_init (&dec->info);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -22,9 +22,9 @@
|
|||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/audio/audio.h>
|
||||
#include <gst/audio/gstaudiodecoder.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
#define GST_TYPE_MULAWDEC \
|
||||
(gst_mulawdec_get_type())
|
||||
#define GST_MULAWDEC(obj) \
|
||||
|
|
@ -35,24 +35,20 @@ G_BEGIN_DECLS
|
|||
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MULAWDEC))
|
||||
#define GST_IS_MULAWDEC_CLASS(klass) \
|
||||
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MULAWDEC))
|
||||
|
||||
typedef struct _GstMuLawDec GstMuLawDec;
|
||||
typedef struct _GstMuLawDecClass GstMuLawDecClass;
|
||||
|
||||
struct _GstMuLawDec {
|
||||
GstElement element;
|
||||
|
||||
GstPad *sinkpad,*srcpad;
|
||||
|
||||
GstAudioInfo info;
|
||||
struct _GstMuLawDec
|
||||
{
|
||||
GstAudioDecoder element;
|
||||
};
|
||||
|
||||
struct _GstMuLawDecClass {
|
||||
GstElementClass parent_class;
|
||||
struct _GstMuLawDecClass
|
||||
{
|
||||
GstAudioDecoderClass parent_class;
|
||||
};
|
||||
|
||||
GType gst_mulawdec_get_type(void);
|
||||
GType gst_mulawdec_get_type (void);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif /* __GST_STEREO_H__ */
|
||||
|
|
|
|||
|
|
@ -134,6 +134,7 @@ check_PROGRAMS = \
|
|||
elements/matroskamux \
|
||||
elements/matroskaparse \
|
||||
elements/mpegaudioparse \
|
||||
elements/mulawdec \
|
||||
elements/mulawenc \
|
||||
elements/multifile \
|
||||
elements/qtmux \
|
||||
|
|
|
|||
124
tests/check/elements/mulawdec.c
Normal file
124
tests/check/elements/mulawdec.c
Normal file
|
|
@ -0,0 +1,124 @@
|
|||
/* GStreamer MulawDec 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>
|
||||
#include <string.h>
|
||||
|
||||
static GstPad *mysrcpad, *mysinkpad;
|
||||
static GstElement *mulawdec = NULL;
|
||||
|
||||
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
|
||||
GST_PAD_SINK,
|
||||
GST_PAD_ALWAYS,
|
||||
GST_STATIC_CAPS ("audio/x-raw,"
|
||||
"format = (string) S16LE, "
|
||||
"rate = (int) 8000, "
|
||||
"channels = (int) 1, " "layout = (string)interleaved")
|
||||
);
|
||||
|
||||
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
|
||||
GST_PAD_SRC,
|
||||
GST_PAD_ALWAYS,
|
||||
GST_STATIC_CAPS ("audio/x-mulaw," "rate = (int) 8000," "channels = (int) 1")
|
||||
);
|
||||
|
||||
static void
|
||||
mulawdec_setup (void)
|
||||
{
|
||||
GstCaps *src_caps;
|
||||
|
||||
src_caps =
|
||||
gst_caps_from_string ("audio/x-mulaw," "rate = (int) 8000,"
|
||||
"channels = (int) 1");
|
||||
|
||||
GST_DEBUG ("%s", __FUNCTION__);
|
||||
|
||||
mulawdec = gst_check_setup_element ("mulawdec");
|
||||
|
||||
mysrcpad = gst_check_setup_src_pad (mulawdec, &srctemplate);
|
||||
mysinkpad = gst_check_setup_sink_pad (mulawdec, &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
|
||||
mulawdec_teardown (void)
|
||||
{
|
||||
/* free decoded 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_check_teardown_src_pad (mulawdec);
|
||||
gst_check_teardown_sink_pad (mulawdec);
|
||||
gst_check_teardown_element (mulawdec);
|
||||
mulawdec = NULL;
|
||||
}
|
||||
|
||||
GST_START_TEST (test_one_buffer)
|
||||
{
|
||||
GstBuffer *buffer;
|
||||
gint buf_size = 4096;
|
||||
guint8 *dp;
|
||||
|
||||
fail_unless (gst_element_set_state (mulawdec, GST_STATE_PLAYING) ==
|
||||
GST_STATE_CHANGE_SUCCESS, "could not change state to playing");
|
||||
|
||||
buffer = gst_buffer_new ();
|
||||
dp = g_malloc0 (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;
|
||||
|
||||
static Suite *
|
||||
mulawdec_suite (void)
|
||||
{
|
||||
Suite *s = suite_create ("mulawdec");
|
||||
TCase *tc_chain = tcase_create ("mulawdec");
|
||||
|
||||
tcase_add_checked_fixture (tc_chain, mulawdec_setup, mulawdec_teardown);
|
||||
|
||||
suite_add_tcase (s, tc_chain);
|
||||
tcase_add_test (tc_chain, test_one_buffer);
|
||||
return s;
|
||||
}
|
||||
|
||||
GST_CHECK_MAIN (mulawdec)
|
||||
Loading…
Reference in a new issue