mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-27 04:01:08 +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
4 changed files with 194 additions and 237 deletions
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@ -33,6 +33,11 @@
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extern GstStaticPadTemplate mulaw_dec_src_factory;
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extern GstStaticPadTemplate mulaw_dec_sink_factory;
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static gboolean gst_mulawdec_set_format (GstAudioDecoder * dec, GstCaps * caps);
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static GstFlowReturn gst_mulawdec_handle_frame (GstAudioDecoder * dec,
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GstBuffer * buffer);
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/* Stereo signals and args */
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enum
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{
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@ -45,278 +50,109 @@ enum
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ARG_0
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};
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static GstStateChangeReturn
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gst_mulawdec_change_state (GstElement * element, GstStateChange transition);
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static gboolean gst_mulawdec_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static GstFlowReturn gst_mulawdec_chain (GstPad * pad, GstObject * parent,
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GstBuffer * buffer);
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#define gst_mulawdec_parent_class parent_class
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G_DEFINE_TYPE (GstMuLawDec, gst_mulawdec, GST_TYPE_ELEMENT);
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G_DEFINE_TYPE (GstMuLawDec, gst_mulawdec, GST_TYPE_AUDIO_DECODER);
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static gboolean
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mulawdec_setcaps (GstMuLawDec * mulawdec, GstCaps * caps)
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gst_mulawdec_set_format (GstAudioDecoder * dec, GstCaps * caps)
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{
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GstMuLawDec *mulawdec = GST_MULAWDEC (dec);
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GstStructure *structure;
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int rate, channels;
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gboolean ret;
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GstCaps *outcaps;
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GstAudioInfo info;
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structure = gst_caps_get_structure (caps, 0);
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ret = gst_structure_get_int (structure, "rate", &rate);
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ret = ret && gst_structure_get_int (structure, "channels", &channels);
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if (!ret)
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return FALSE;
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if (!structure) {
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GST_ERROR ("failed to get structure from caps");
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goto error_failed_get_structure;
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}
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if (!gst_structure_get_int (structure, "rate", &rate)) {
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GST_ERROR ("failed to find field rate in input caps");
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goto error_failed_find_rate;
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}
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if (!gst_structure_get_int (structure, "channels", &channels)) {
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GST_ERROR ("failed to find field channels in input caps");
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goto error_failed_find_channel;
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}
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gst_audio_info_init (&info);
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gst_audio_info_set_format (&info, GST_AUDIO_FORMAT_S16, rate, channels, NULL);
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outcaps = gst_audio_info_to_caps (&info);
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ret = gst_pad_set_caps (mulawdec->srcpad, outcaps);
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gst_caps_unref (outcaps);
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GST_DEBUG_OBJECT (mulawdec, "rate=%d, channels=%d", rate, channels);
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if (ret) {
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GST_DEBUG_OBJECT (mulawdec, "rate=%d, channels=%d", rate, channels);
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mulawdec->info = info;
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}
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return ret;
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return gst_audio_decoder_set_output_format (dec, &info);
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error_failed_find_channel:
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error_failed_find_rate:
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error_failed_get_structure:
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return FALSE;
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}
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static GstCaps *
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mulawdec_getcaps (GstPad * pad, GstCaps * filter)
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static GstFlowReturn
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gst_mulawdec_handle_frame (GstAudioDecoder * dec, GstBuffer * buffer)
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{
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GstMuLawDec *mulawdec;
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GstPad *otherpad;
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GstCaps *othercaps, *result;
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GstCaps *templ;
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const gchar *name;
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gint i;
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GstMapInfo inmap, outmap;
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gint16 *linear_data;
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guint8 *mulaw_data;
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gsize mulaw_size, linear_size;
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GstBuffer *outbuf;
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mulawdec = GST_MULAWDEC (GST_PAD_PARENT (pad));
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/* figure out the name of the caps we are going to return */
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if (pad == mulawdec->srcpad) {
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name = "audio/x-raw";
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otherpad = mulawdec->sinkpad;
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} else {
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name = "audio/x-mulaw";
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otherpad = mulawdec->srcpad;
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if (!gst_buffer_map (buffer, &inmap, GST_MAP_READ)) {
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GST_ERROR ("failed to map input buffer");
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goto error_failed_map_input_buffer;
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}
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/* get caps from the peer, this can return NULL when there is no peer */
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othercaps = gst_pad_peer_query_caps (otherpad, NULL);
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/* get the template caps to make sure we return something acceptable */
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templ = gst_pad_get_pad_template_caps (pad);
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mulaw_data = inmap.data;
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mulaw_size = inmap.size;
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if (othercaps) {
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/* there was a peer */
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othercaps = gst_caps_make_writable (othercaps);
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linear_size = mulaw_size * 2;
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/* go through the caps and remove the fields we don't want */
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for (i = 0; i < gst_caps_get_size (othercaps); i++) {
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GstStructure *structure;
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structure = gst_caps_get_structure (othercaps, i);
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/* adjust the name */
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gst_structure_set_name (structure, name);
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if (pad == mulawdec->sinkpad) {
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/* remove the fields we don't want */
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gst_structure_remove_fields (structure, "format", "layout", NULL);
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} else {
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/* add fixed fields */
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gst_structure_set (structure, "format", G_TYPE_STRING,
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GST_AUDIO_NE (S16), "layout", G_TYPE_STRING, "interleaved", NULL);
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}
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}
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/* filter against the allowed caps of the pad to return our result */
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result = gst_caps_intersect (othercaps, templ);
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gst_caps_unref (othercaps);
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gst_caps_unref (templ);
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} else {
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/* there was no peer, return the template caps */
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result = templ;
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outbuf = gst_audio_decoder_allocate_output_buffer (dec, linear_size);
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if (!gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE)) {
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GST_ERROR ("failed to map input buffer");
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goto error_failed_map_output_buffer;
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}
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if (filter && result) {
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GstCaps *temp;
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temp = gst_caps_intersect (result, filter);
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gst_caps_unref (result);
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result = temp;
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}
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return result;
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}
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linear_data = (gint16 *) outmap.data;
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static gboolean
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gst_mulawdec_query (GstPad * pad, GstObject * parent, GstQuery * query)
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{
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gboolean res;
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mulaw_decode (mulaw_data, linear_data, mulaw_size);
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_CAPS:
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{
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GstCaps *filter, *caps;
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gst_buffer_unmap (outbuf, &outmap);
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gst_buffer_unmap (buffer, &inmap);
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gst_query_parse_caps (query, &filter);
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caps = mulawdec_getcaps (pad, filter);
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gst_query_set_caps_result (query, caps);
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gst_caps_unref (caps);
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return gst_audio_decoder_finish_frame (dec, outbuf, -1);
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res = TRUE;
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break;
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}
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default:
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res = gst_pad_query_default (pad, parent, query);
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break;
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}
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return res;
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error_failed_map_output_buffer:
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gst_buffer_unref (outbuf);
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error_failed_map_input_buffer:
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return FALSE;
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}
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static void
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gst_mulawdec_class_init (GstMuLawDecClass * klass)
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{
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GstElementClass *element_class = (GstElementClass *) klass;
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GstAudioDecoderClass *audiodec_class = GST_AUDIO_DECODER_CLASS (klass);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&mulaw_dec_src_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&mulaw_dec_sink_factory));
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audiodec_class->set_format = GST_DEBUG_FUNCPTR (gst_mulawdec_set_format);
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audiodec_class->handle_frame = GST_DEBUG_FUNCPTR (gst_mulawdec_handle_frame);
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gst_element_class_set_static_metadata (element_class, "Mu Law audio decoder",
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"Codec/Decoder/Audio",
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"Convert 8bit mu law to 16bit PCM",
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"Zaheer Abbas Merali <zaheerabbas at merali dot org>");
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element_class->change_state = GST_DEBUG_FUNCPTR (gst_mulawdec_change_state);
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}
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static void
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gst_mulawdec_init (GstMuLawDec * mulawdec)
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{
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mulawdec->sinkpad =
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gst_pad_new_from_static_template (&mulaw_dec_sink_factory, "sink");
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gst_pad_set_query_function (mulawdec->sinkpad, gst_mulawdec_query);
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gst_pad_set_event_function (mulawdec->sinkpad, gst_mulawdec_event);
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gst_pad_set_chain_function (mulawdec->sinkpad, gst_mulawdec_chain);
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gst_element_add_pad (GST_ELEMENT (mulawdec), mulawdec->sinkpad);
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mulawdec->srcpad =
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gst_pad_new_from_static_template (&mulaw_dec_src_factory, "src");
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gst_pad_set_query_function (mulawdec->srcpad, gst_mulawdec_query);
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gst_element_add_pad (GST_ELEMENT (mulawdec), mulawdec->srcpad);
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}
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static gboolean
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gst_mulawdec_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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GstMuLawDec *mulawdec;
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gboolean res;
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mulawdec = GST_MULAWDEC (parent);
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_CAPS:
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{
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GstCaps *caps;
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gst_event_parse_caps (event, &caps);
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mulawdec_setcaps (mulawdec, caps);
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gst_event_unref (event);
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res = TRUE;
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break;
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}
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default:
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res = gst_pad_event_default (pad, parent, event);
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break;
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}
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return res;
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}
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static GstFlowReturn
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gst_mulawdec_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
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{
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GstMuLawDec *mulawdec;
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GstMapInfo inmap, outmap;
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gint16 *linear_data;
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guint8 *mulaw_data;
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gsize mulaw_size, linear_size;
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GstBuffer *outbuf;
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GstFlowReturn ret;
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mulawdec = GST_MULAWDEC (parent);
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if (G_UNLIKELY (!GST_AUDIO_INFO_IS_VALID (&mulawdec->info)))
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goto not_negotiated;
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gst_buffer_map (buffer, &inmap, GST_MAP_READ);
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mulaw_data = inmap.data;
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mulaw_size = inmap.size;
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linear_size = mulaw_size * 2;
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outbuf = gst_buffer_new_allocate (NULL, linear_size, NULL);
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gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
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linear_data = (gint16 *) outmap.data;
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/* copy discont flag */
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if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT))
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GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
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GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
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if (GST_BUFFER_DURATION_IS_VALID (buffer)) {
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GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
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} else {
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GST_BUFFER_DURATION (outbuf) = gst_util_uint64_scale_int (GST_SECOND,
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linear_size, GST_AUDIO_INFO_RATE (&mulawdec->info) *
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GST_AUDIO_INFO_BPF (&mulawdec->info));
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}
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mulaw_decode (mulaw_data, linear_data, mulaw_size);
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gst_buffer_unmap (outbuf, &outmap);
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gst_buffer_unmap (buffer, &inmap);
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gst_buffer_unref (buffer);
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ret = gst_pad_push (mulawdec->srcpad, outbuf);
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return ret;
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/* ERRORS */
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not_negotiated:
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{
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GST_WARNING_OBJECT (mulawdec, "no input format set: not-negotiated");
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gst_buffer_unref (buffer);
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return GST_FLOW_NOT_NEGOTIATED;
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}
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}
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static GstStateChangeReturn
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gst_mulawdec_change_state (GstElement * element, GstStateChange transition)
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{
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GstStateChangeReturn ret;
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GstMuLawDec *dec = GST_MULAWDEC (element);
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switch (transition) {
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default:
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break;
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}
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ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
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if (ret != GST_STATE_CHANGE_SUCCESS)
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return ret;
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switch (transition) {
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case GST_STATE_CHANGE_PAUSED_TO_READY:
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gst_audio_info_init (&dec->info);
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break;
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default:
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break;
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}
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return ret;
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}
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@ -22,9 +22,9 @@
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#include <gst/gst.h>
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#include <gst/audio/audio.h>
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#include <gst/audio/gstaudiodecoder.h>
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G_BEGIN_DECLS
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#define GST_TYPE_MULAWDEC \
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(gst_mulawdec_get_type())
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#define GST_MULAWDEC(obj) \
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@ -35,24 +35,20 @@ G_BEGIN_DECLS
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MULAWDEC))
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#define GST_IS_MULAWDEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MULAWDEC))
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typedef struct _GstMuLawDec GstMuLawDec;
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typedef struct _GstMuLawDecClass GstMuLawDecClass;
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struct _GstMuLawDec {
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GstElement element;
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GstPad *sinkpad,*srcpad;
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GstAudioInfo info;
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struct _GstMuLawDec
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{
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GstAudioDecoder element;
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};
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struct _GstMuLawDecClass {
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GstElementClass parent_class;
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struct _GstMuLawDecClass
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{
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GstAudioDecoderClass parent_class;
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};
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GType gst_mulawdec_get_type(void);
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GType gst_mulawdec_get_type (void);
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G_END_DECLS
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#endif /* __GST_STEREO_H__ */
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@ -134,6 +134,7 @@ check_PROGRAMS = \
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elements/matroskamux \
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elements/matroskaparse \
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elements/mpegaudioparse \
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elements/mulawdec \
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elements/mulawenc \
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elements/multifile \
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elements/qtmux \
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124
tests/check/elements/mulawdec.c
Normal file
124
tests/check/elements/mulawdec.c
Normal file
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@ -0,0 +1,124 @@
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/* GStreamer MulawDec unit tests
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
|
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Library General Public License for more details.
|
||||
*
|
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* You should have received a copy of the GNU Library General Public
|
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/check/gstcheck.h>
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#include <string.h>
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static GstPad *mysrcpad, *mysinkpad;
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static GstElement *mulawdec = NULL;
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static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-raw,"
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"format = (string) S16LE, "
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"rate = (int) 8000, "
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"channels = (int) 1, " "layout = (string)interleaved")
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);
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static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-mulaw," "rate = (int) 8000," "channels = (int) 1")
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);
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static void
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mulawdec_setup (void)
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{
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GstCaps *src_caps;
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src_caps =
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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