*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-alawenc
#include "config.h"
#endif
+#include <gst/audio/audio.h>
#include "alaw-encode.h"
GST_DEBUG_CATEGORY_STATIC (alaw_enc_debug);
extern GstStaticPadTemplate alaw_enc_src_factory;
extern GstStaticPadTemplate alaw_enc_sink_factory;
-static gboolean gst_alaw_enc_event (GstPad * pad, GstEvent * event);
-static GstFlowReturn gst_alaw_enc_chain (GstPad * pad, GstBuffer * buffer);
+G_DEFINE_TYPE (GstALawEnc, gst_alaw_enc, GST_TYPE_AUDIO_ENCODER);
-G_DEFINE_TYPE (GstALawEnc, gst_alaw_enc, GST_TYPE_ELEMENT);
+static gboolean gst_alaw_enc_start (GstAudioEncoder * audioenc);
+static gboolean gst_alaw_enc_set_format (GstAudioEncoder * enc,
+ GstAudioInfo * info);
+static GstFlowReturn gst_alaw_enc_handle_frame (GstAudioEncoder * enc,
+ GstBuffer * buffer);
/* some day we might have defines in gstconfig.h that tell us about the
* desired cpu/memory/binary size trade-offs */
#endif /* GST_ALAW_ENC_USE_TABLE */
-static GstCaps *
-gst_alaw_enc_getcaps (GstPad * pad, GstCaps * filter)
+static gboolean
+gst_alaw_enc_start (GstAudioEncoder * audioenc)
{
- GstALawEnc *alawenc;
- GstPad *otherpad;
- GstCaps *othercaps, *result;
- const GstCaps *templ;
- const gchar *name;
- gint i;
+ GstALawEnc *alawenc = GST_ALAW_ENC (audioenc);
- alawenc = GST_ALAW_ENC (GST_PAD_PARENT (pad));
-
- /* figure out the name of the caps we are going to return */
- if (pad == alawenc->srcpad) {
- name = "audio/x-alaw";
- otherpad = alawenc->sinkpad;
- } else {
- name = "audio/x-raw-int";
- otherpad = alawenc->srcpad;
- }
- /* get caps from the peer, this can return NULL when there is no peer */
- othercaps = gst_pad_peer_get_caps (otherpad, filter);
-
- /* 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 == alawenc->srcpad) {
- /* remove the fields we don't want */
- gst_structure_remove_fields (structure, "width", "depth", "endianness",
- "signed", NULL);
- } else {
- /* add fixed fields */
- gst_structure_set (structure, "width", G_TYPE_INT, 16,
- "depth", G_TYPE_INT, 16,
- "endianness", G_TYPE_INT, G_BYTE_ORDER,
- "signed", G_TYPE_BOOLEAN, TRUE, NULL);
- }
- }
- /* filter against the allowed caps of the pad to return our result */
- result = gst_caps_intersect (othercaps, templ);
- gst_caps_unref (othercaps);
- } else {
- /* there was no peer, return the template caps */
- result = gst_caps_copy (templ);
- }
+ alawenc->channels = 0;
+ alawenc->rate = 0;
- return result;
+ return TRUE;
}
static gboolean
-gst_alaw_enc_setcaps (GstALawEnc * alawenc, GstCaps * caps)
+gst_alaw_enc_set_format (GstAudioEncoder * audioenc, GstAudioInfo * info)
{
+ GstCaps *base_caps;
GstStructure *structure;
+ GstALawEnc *alawenc = GST_ALAW_ENC (audioenc);
gboolean ret;
- GstCaps *base_caps;
- structure = gst_caps_get_structure (caps, 0);
- gst_structure_get_int (structure, "channels", &alawenc->channels);
- gst_structure_get_int (structure, "rate", &alawenc->rate);
+ alawenc->rate = info->rate;
+ alawenc->channels = info->channels;
+
+ 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);
- base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (alawenc->srcpad));
structure = gst_caps_get_structure (base_caps, 0);
+ g_assert (structure);
gst_structure_set (structure, "rate", G_TYPE_INT, alawenc->rate, NULL);
gst_structure_set (structure, "channels", G_TYPE_INT, alawenc->channels,
NULL);
- GST_DEBUG_OBJECT (alawenc, "rate=%d, channels=%d", alawenc->rate,
- alawenc->channels);
-
- ret = gst_pad_set_caps (alawenc->srcpad, base_caps);
-
+ ret = gst_audio_encoder_set_output_format (audioenc, base_caps);
gst_caps_unref (base_caps);
return ret;
}
-static void
-gst_alaw_enc_class_init (GstALawEncClass * klass)
-{
- GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
-
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&alaw_enc_src_factory));
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&alaw_enc_sink_factory));
-
- gst_element_class_set_details_simple (element_class,
- "A Law audio encoder", "Codec/Encoder/Audio",
- "Convert 16bit PCM to 8bit A law",
- "Zaheer Abbas Merali <zaheerabbas at merali dot org>");
-
- GST_DEBUG_CATEGORY_INIT (alaw_enc_debug, "alawenc", 0, "A Law audio encoder");
-}
-
-static void
-gst_alaw_enc_init (GstALawEnc * alawenc)
-{
- alawenc->sinkpad =
- gst_pad_new_from_static_template (&alaw_enc_sink_factory, "sink");
- gst_pad_set_getcaps_function (alawenc->sinkpad,
- GST_DEBUG_FUNCPTR (gst_alaw_enc_getcaps));
- gst_pad_set_event_function (alawenc->sinkpad,
- GST_DEBUG_FUNCPTR (gst_alaw_enc_event));
- gst_pad_set_chain_function (alawenc->sinkpad,
- GST_DEBUG_FUNCPTR (gst_alaw_enc_chain));
- gst_element_add_pad (GST_ELEMENT (alawenc), alawenc->sinkpad);
-
- alawenc->srcpad =
- gst_pad_new_from_static_template (&alaw_enc_src_factory, "src");
- gst_pad_set_getcaps_function (alawenc->srcpad,
- GST_DEBUG_FUNCPTR (gst_alaw_enc_getcaps));
- gst_pad_use_fixed_caps (alawenc->srcpad);
- gst_element_add_pad (GST_ELEMENT (alawenc), alawenc->srcpad);
-
- /* init rest */
- alawenc->channels = 0;
- alawenc->rate = 0;
-}
-
-static gboolean
-gst_alaw_enc_event (GstPad * pad, GstEvent * event)
-{
- GstALawEnc *alawenc;
- gboolean res;
-
- alawenc = GST_ALAW_ENC (GST_PAD_PARENT (pad));
-
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_CAPS:
- {
- GstCaps *caps;
-
- gst_event_parse_caps (event, &caps);
- gst_alaw_enc_setcaps (alawenc, caps);
- gst_event_unref (event);
-
- res = TRUE;
- break;
- }
- default:
- res = gst_pad_event_default (pad, event);
- break;
- }
- return res;
-}
-
static GstFlowReturn
-gst_alaw_enc_chain (GstPad * pad, GstBuffer * buffer)
+gst_alaw_enc_handle_frame (GstAudioEncoder * audioenc, GstBuffer * buffer)
{
GstALawEnc *alawenc;
+ GstMapInfo inmap, outmap;
gint16 *linear_data;
gsize linear_size;
guint8 *alaw_data;
guint alaw_size;
GstBuffer *outbuf;
- gint i;
GstFlowReturn ret;
- GstClockTime timestamp, duration;
+ gint i;
+
+ if (!buffer) {
+ ret = GST_FLOW_OK;
+ goto done;
+ }
- alawenc = GST_ALAW_ENC (GST_PAD_PARENT (pad));
+ alawenc = GST_ALAW_ENC (audioenc);
- if (G_UNLIKELY (alawenc->rate == 0 || alawenc->channels == 0))
+ if (!alawenc->rate || !alawenc->channels)
goto not_negotiated;
- linear_data = gst_buffer_map (buffer, &linear_size, NULL, GST_MAP_READ);
+ gst_buffer_map (buffer, &inmap, GST_MAP_READ);
+ linear_data = (gint16 *) inmap.data;
+ linear_size = inmap.size;
alaw_size = linear_size / 2;
- timestamp = GST_BUFFER_TIMESTAMP (buffer);
- duration = GST_BUFFER_DURATION (buffer);
-
- GST_LOG_OBJECT (alawenc, "buffer with ts=%" GST_TIME_FORMAT,
- GST_TIME_ARGS (timestamp));
-
- outbuf = gst_buffer_new_allocate (NULL, alaw_size, 0);
+ outbuf = gst_audio_encoder_allocate_output_buffer (audioenc, alaw_size);
- if (duration == GST_CLOCK_TIME_NONE) {
- duration = gst_util_uint64_scale_int (alaw_size,
- GST_SECOND, alawenc->rate * alawenc->channels);
- }
-
- alaw_data = gst_buffer_map (outbuf, NULL, NULL, GST_MAP_WRITE);
-
- /* copy discont flag */
- if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT))
- GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
+ g_assert (outbuf);
- GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
- GST_BUFFER_DURATION (outbuf) = duration;
+ gst_buffer_map (outbuf, &outmap, GST_MAP_WRITE);
+ alaw_data = outmap.data;
for (i = 0; i < alaw_size; i++) {
alaw_data[i] = s16_to_alaw (linear_data[i]);
}
- gst_buffer_unmap (outbuf, alaw_data, -1);
- gst_buffer_unmap (buffer, linear_data, -1);
- gst_buffer_unref (buffer);
+ gst_buffer_unmap (outbuf, &outmap);
+ gst_buffer_unmap (buffer, &inmap);
- ret = gst_pad_push (alawenc->srcpad, outbuf);
+ ret = gst_audio_encoder_finish_frame (audioenc, outbuf, -1);
+done:
return ret;
not_negotiated:
{
- gst_buffer_unref (buffer);
- return GST_FLOW_NOT_NEGOTIATED;
+ GST_DEBUG_OBJECT (alawenc, "no format negotiated");
+ ret = GST_FLOW_NOT_NEGOTIATED;
+ goto done;
}
}
+
+static void
+gst_alaw_enc_class_init (GstALawEncClass * 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_alaw_enc_start);
+ audio_encoder_class->set_format = GST_DEBUG_FUNCPTR (gst_alaw_enc_set_format);
+ audio_encoder_class->handle_frame =
+ GST_DEBUG_FUNCPTR (gst_alaw_enc_handle_frame);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&alaw_enc_src_factory));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&alaw_enc_sink_factory));
+
+ gst_element_class_set_static_metadata (element_class,
+ "A Law audio encoder", "Codec/Encoder/Audio",
+ "Convert 16bit PCM to 8bit A law",
+ "Zaheer Abbas Merali <zaheerabbas at merali dot org>");
+ GST_DEBUG_CATEGORY_INIT (alaw_enc_debug, "alawenc", 0, "A Law audio encoder");
+}
+
+static void
+gst_alaw_enc_init (GstALawEnc * alawenc)
+{
+ GST_PAD_SET_ACCEPT_TEMPLATE (GST_AUDIO_ENCODER_SINK_PAD (alawenc));
+}
projects / platform / upstream / gst-plugins-good.git / blobdiff