mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2025-02-17 03:35:21 +00:00
mulawenc: change to gstaudioencoder base, added bitrate tags
This commit is contained in:
Alexander Schrab
Sebastian Dröge
parent
2e80c0d2c0
commit
f0edb5fb70
4 changed files with 294 additions and 211 deletions
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@ -46,138 +46,148 @@ enum
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ARG_0
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};
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static gboolean gst_mulawenc_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static GstFlowReturn gst_mulawenc_chain (GstPad * pad, GstObject * parent,
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static gboolean gst_mulawenc_start (GstAudioEncoder * audioenc);
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static gboolean gst_mulawenc_set_format (GstAudioEncoder * enc,
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GstAudioInfo * info);
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static GstFlowReturn gst_mulawenc_handle_frame (GstAudioEncoder * enc,
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GstBuffer * buffer);
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static void gst_mulawenc_set_tags (GstMuLawEnc * mulawenc);
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#define gst_mulawenc_parent_class parent_class
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G_DEFINE_TYPE (GstMuLawEnc, gst_mulawenc, GST_TYPE_ELEMENT);
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G_DEFINE_TYPE (GstMuLawEnc, gst_mulawenc, GST_TYPE_AUDIO_ENCODER);
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/*static guint gst_stereo_signals[LAST_SIGNAL] = { 0 }; */
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static GstCaps *
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mulawenc_getcaps (GstPad * pad, GstCaps * filter)
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static gboolean
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gst_mulawenc_start (GstAudioEncoder * audioenc)
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{
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GstMuLawEnc *mulawenc;
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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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GstMuLawEnc *mulawenc = GST_MULAWENC (audioenc);
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mulawenc = GST_MULAWENC (GST_PAD_PARENT (pad));
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mulawenc->channels = 0;
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mulawenc->rate = 0;
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/* figure out the name of the caps we are going to return */
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if (pad == mulawenc->srcpad) {
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name = "audio/x-mulaw";
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otherpad = mulawenc->sinkpad;
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} else {
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name = "audio/x-raw";
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otherpad = mulawenc->srcpad;
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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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if (othercaps) {
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/* there was a peer */
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othercaps = gst_caps_make_writable (othercaps);
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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 == mulawenc->srcpad) {
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/* remove the fields we don't want */
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gst_structure_remove_fields (structure, "format", 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), 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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}
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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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return TRUE;
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}
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static gboolean
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gst_mulawenc_query (GstPad * pad, GstObject * parent, GstQuery * query)
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static void
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gst_mulawenc_set_tags (GstMuLawEnc * mulawenc)
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{
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gboolean res;
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GstTagList *taglist;
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guint bitrate;
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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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/* bitrate of mulaw is 8 bits/sample * sample rate * number of channels */
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bitrate = 8 * mulawenc->rate * mulawenc->channels;
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gst_query_parse_caps (query, &filter);
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caps = mulawenc_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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taglist = gst_tag_list_new_empty ();
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gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE,
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GST_TAG_MAXIMUM_BITRATE, bitrate, NULL);
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gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE,
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GST_TAG_MINIMUM_BITRATE, bitrate, NULL);
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gst_tag_list_add (taglist, GST_TAG_MERGE_REPLACE,
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GST_TAG_BITRATE, bitrate, NULL);
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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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gst_audio_encoder_merge_tags (GST_AUDIO_ENCODER (mulawenc),
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taglist, GST_TAG_MERGE_REPLACE);
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gst_tag_list_unref (taglist);
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}
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static gboolean
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mulawenc_setcaps (GstMuLawEnc * mulawenc, GstCaps * caps)
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gst_mulawenc_set_format (GstAudioEncoder * audioenc, GstAudioInfo * info)
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{
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GstStructure *structure;
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GstCaps *base_caps;
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GstStructure *structure;
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GstMuLawEnc *mulawenc = GST_MULAWENC (audioenc);
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structure = gst_caps_get_structure (caps, 0);
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gst_structure_get_int (structure, "channels", &mulawenc->channels);
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gst_structure_get_int (structure, "rate", &mulawenc->rate);
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mulawenc->rate = info->rate;
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mulawenc->channels = info->channels;
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base_caps = gst_pad_get_pad_template_caps (mulawenc->srcpad);
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base_caps =
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gst_pad_get_pad_template_caps (GST_AUDIO_ENCODER_SRC_PAD (audioenc));
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g_assert (base_caps);
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base_caps = gst_caps_make_writable (base_caps);
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g_assert (base_caps);
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structure = gst_caps_get_structure (base_caps, 0);
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g_assert (structure);
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gst_structure_set (structure, "rate", G_TYPE_INT, mulawenc->rate, NULL);
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gst_structure_set (structure, "channels", G_TYPE_INT, mulawenc->channels,
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NULL);
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gst_pad_set_caps (mulawenc->srcpad, base_caps);
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gst_mulawenc_set_tags (mulawenc);
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gst_caps_unref (base_caps);
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return TRUE;
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return gst_audio_encoder_set_output_format (audioenc, base_caps);
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}
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static GstFlowReturn
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gst_mulawenc_handle_frame (GstAudioEncoder * audioenc, GstBuffer * buffer)
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{
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GstMuLawEnc *mulawenc;
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GstMapInfo inmap, outmap;
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gint16 *linear_data;
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gsize linear_size;
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guint8 *mulaw_data;
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guint mulaw_size;
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GstBuffer *outbuf;
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GstFlowReturn ret;
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if (!buffer) {
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ret = GST_FLOW_OK;
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goto done;
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}
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mulawenc = GST_MULAWENC (audioenc);
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if (!mulawenc->rate || !mulawenc->channels)
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goto not_negotiated;
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gst_buffer_map (buffer, &inmap, GST_MAP_READ);
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linear_data = (gint16 *) inmap.data;
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linear_size = inmap.size;
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mulaw_size = linear_size / 2;
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outbuf = gst_audio_encoder_allocate_output_buffer (audioenc, mulaw_size);
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g_assert (outbuf);
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gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
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mulaw_data = outmap.data;
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mulaw_encode (linear_data, mulaw_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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ret = gst_audio_encoder_finish_frame (audioenc, outbuf, -1);
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done:
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return ret;
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not_negotiated:
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{
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GST_DEBUG_OBJECT (mulawenc, "no format negotiated");
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ret = GST_FLOW_NOT_NEGOTIATED;
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goto done;
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}
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}
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static void
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gst_mulawenc_class_init (GstMuLawEncClass * klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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GstAudioEncoderClass *audio_encoder_class = GST_AUDIO_ENCODER_CLASS (klass);
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audio_encoder_class->start = GST_DEBUG_FUNCPTR (gst_mulawenc_start);
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audio_encoder_class->set_format = GST_DEBUG_FUNCPTR (gst_mulawenc_set_format);
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audio_encoder_class->handle_frame =
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GST_DEBUG_FUNCPTR (gst_mulawenc_handle_frame);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&mulaw_enc_src_factory));
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@ -193,111 +203,5 @@ gst_mulawenc_class_init (GstMuLawEncClass * klass)
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static void
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gst_mulawenc_init (GstMuLawEnc * mulawenc)
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{
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mulawenc->sinkpad =
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gst_pad_new_from_static_template (&mulaw_enc_sink_factory, "sink");
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gst_pad_set_query_function (mulawenc->sinkpad, gst_mulawenc_query);
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gst_pad_set_event_function (mulawenc->sinkpad, gst_mulawenc_event);
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gst_pad_set_chain_function (mulawenc->sinkpad, gst_mulawenc_chain);
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gst_element_add_pad (GST_ELEMENT (mulawenc), mulawenc->sinkpad);
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mulawenc->srcpad =
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gst_pad_new_from_static_template (&mulaw_enc_src_factory, "src");
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gst_pad_set_query_function (mulawenc->srcpad, gst_mulawenc_query);
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gst_element_add_pad (GST_ELEMENT (mulawenc), mulawenc->srcpad);
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/* init rest */
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mulawenc->channels = 0;
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mulawenc->rate = 0;
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}
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static gboolean
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gst_mulawenc_event (GstPad * pad, GstObject * parent, GstEvent * event)
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{
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GstMuLawEnc *mulawenc;
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gboolean res;
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mulawenc = GST_MULAWENC (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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mulawenc_setcaps (mulawenc, 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_mulawenc_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
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{
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GstMuLawEnc *mulawenc;
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GstMapInfo inmap, outmap;
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gint16 *linear_data;
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gsize linear_size;
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guint8 *mulaw_data;
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guint mulaw_size;
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GstBuffer *outbuf;
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GstFlowReturn ret;
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GstClockTime timestamp, duration;
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mulawenc = GST_MULAWENC (parent);
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if (!mulawenc->rate || !mulawenc->channels)
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goto not_negotiated;
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gst_buffer_map (buffer, &inmap, GST_MAP_READ);
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linear_data = (gint16 *) inmap.data;
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linear_size = inmap.size;
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mulaw_size = linear_size / 2;
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timestamp = GST_BUFFER_TIMESTAMP (buffer);
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duration = GST_BUFFER_DURATION (buffer);
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outbuf = gst_buffer_new_allocate (NULL, mulaw_size, NULL);
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if (duration == -1) {
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duration = gst_util_uint64_scale_int (mulaw_size,
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GST_SECOND, mulawenc->rate * mulawenc->channels);
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}
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gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
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mulaw_data = 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) = timestamp;
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GST_BUFFER_DURATION (outbuf) = duration;
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mulaw_encode (linear_data, mulaw_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 (mulawenc->srcpad, outbuf);
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done:
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return ret;
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not_negotiated:
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{
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GST_DEBUG_OBJECT (mulawenc, "no format negotiated");
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ret = GST_FLOW_NOT_NEGOTIATED;
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gst_buffer_unref (buffer);
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goto done;
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}
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}
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@ -22,9 +22,9 @@
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#define __GST_MULAWENCODE_H__
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#include <gst/gst.h>
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#include <gst/audio/gstaudioencoder.h>
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G_BEGIN_DECLS
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#define GST_TYPE_MULAWENC \
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(gst_mulawenc_get_type())
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#define GST_MULAWENC(obj) \
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@ -35,25 +35,23 @@ G_BEGIN_DECLS
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MULAWENC))
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#define GST_IS_MULAWENC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MULAWENC))
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typedef struct _GstMuLawEnc GstMuLawEnc;
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typedef struct _GstMuLawEncClass GstMuLawEncClass;
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struct _GstMuLawEnc {
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GstElement element;
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GstPad *sinkpad,*srcpad;
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struct _GstMuLawEnc
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{
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GstAudioEncoder element;
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gint channels;
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gint rate;
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};
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struct _GstMuLawEncClass {
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GstElementClass parent_class;
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struct _GstMuLawEncClass
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{
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GstAudioEncoderClass parent_class;
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};
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GType gst_mulawenc_get_type(void);
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GType gst_mulawenc_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/mulawenc \
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elements/multifile \
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elements/qtmux \
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elements/rganalysis \
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|
|
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180
tests/check/elements/mulawenc.c
Normal file
180
tests/check/elements/mulawenc.c
Normal file
|
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@ -0,0 +1,180 @@
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/* GStreamer MulawEnc 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
|
||||
* 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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*
|
||||
* 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
|
||||
* 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,
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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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GList *buffers = NULL;
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GstPad *mysrcpad, *mysinkpad;
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GstElement *mulawenc = NULL;
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|
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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-mulaw," "rate = (int) 8000," "channels = (int) 1")
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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-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 void
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||||
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)
|
||||
Loading…
Reference in a new issue