mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2025-02-17 11:45:25 +00:00
port a52dec to 0.11
This commit is contained in:
Wim Taymans
parent
d4f1303f57
commit
5737f8cc82
1 changed files with 91 additions and 94 deletions
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@ -55,8 +55,10 @@
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#ifdef LIBA52_DOUBLE
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#define SAMPLE_WIDTH 64
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#define SAMPLE_FORMAT GST_AUDIO_NE(F64)
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#else
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#define SAMPLE_WIDTH 32
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#define SAMPLE_FORMAT GST_AUDIO_NE(F32)
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#endif
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GST_DEBUG_CATEGORY_STATIC (a52dec_debug);
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@ -80,17 +82,16 @@ static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
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static GstStaticPadTemplate src_factory = 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-float, "
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"endianness = (int) " G_STRINGIFY (G_BYTE_ORDER) ", "
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"width = (int) " G_STRINGIFY (SAMPLE_WIDTH) ", "
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GST_STATIC_CAPS ("audio/x-raw, "
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"format = (string) " SAMPLE_FORMAT ", "
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"rate = (int) [ 4000, 96000 ], " "channels = (int) [ 1, 6 ]")
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);
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GST_BOILERPLATE (GstA52Dec, gst_a52dec, GstElement, GST_TYPE_ELEMENT);
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#define gst_a52dec_parent_class parent_class
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G_DEFINE_TYPE (GstA52Dec, gst_a52dec, GST_TYPE_ELEMENT);
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static GstFlowReturn gst_a52dec_chain (GstPad * pad, GstBuffer * buffer);
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static GstFlowReturn gst_a52dec_chain_raw (GstPad * pad, GstBuffer * buf);
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static gboolean gst_a52dec_sink_setcaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_a52dec_sink_event (GstPad * pad, GstEvent * event);
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static GstStateChangeReturn gst_a52dec_change_state (GstElement * element,
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GstStateChange transition);
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@ -123,24 +124,6 @@ gst_a52dec_mode_get_type (void)
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return a52dec_mode_type;
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}
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static void
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gst_a52dec_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&sink_factory));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&src_factory));
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gst_element_class_set_details_simple (element_class,
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"ATSC A/52 audio decoder", "Codec/Decoder/Audio",
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"Decodes ATSC A/52 encoded audio streams",
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"David I. Lehn <dlehn@users.sourceforge.net>");
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GST_DEBUG_CATEGORY_INIT (a52dec_debug, "a52dec", 0,
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"AC3/A52 software decoder");
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}
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static void
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gst_a52dec_class_init (GstA52DecClass * klass)
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{
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@ -188,6 +171,18 @@ gst_a52dec_class_init (GstA52DecClass * klass)
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g_param_spec_boolean ("lfe", "LFE", "LFE", TRUE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&sink_factory));
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&src_factory));
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gst_element_class_set_details_simple (gstelement_class,
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"ATSC A/52 audio decoder", "Codec/Decoder/Audio",
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"Decodes ATSC A/52 encoded audio streams",
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"David I. Lehn <dlehn@users.sourceforge.net>");
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GST_DEBUG_CATEGORY_INIT (a52dec_debug, "a52dec", 0,
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"AC3/A52 software decoder");
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/* If no CPU instruction based acceleration is available, end up using the
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* generic software djbfft based one when available in the used liba52 */
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#ifdef MM_ACCEL_DJBFFT
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@ -213,12 +208,10 @@ gst_a52dec_class_init (GstA52DecClass * klass)
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}
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static void
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gst_a52dec_init (GstA52Dec * a52dec, GstA52DecClass * g_class)
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gst_a52dec_init (GstA52Dec * a52dec)
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{
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/* create the sink and src pads */
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a52dec->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
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gst_pad_set_setcaps_function (a52dec->sinkpad,
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GST_DEBUG_FUNCPTR (gst_a52dec_sink_setcaps));
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gst_pad_set_chain_function (a52dec->sinkpad,
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GST_DEBUG_FUNCPTR (gst_a52dec_chain));
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gst_pad_set_event_function (a52dec->sinkpad,
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@ -371,27 +364,22 @@ gst_a52dec_push (GstA52Dec * a52dec,
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GstBuffer *buf;
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int chans, n, c;
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GstFlowReturn result;
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sample_t *data;
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flags &= (A52_CHANNEL_MASK | A52_LFE);
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chans = gst_a52dec_channels (flags, NULL);
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if (!chans) {
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GST_ELEMENT_ERROR (GST_ELEMENT (a52dec), STREAM, DECODE, (NULL),
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("invalid channel flags: %d", flags));
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return GST_FLOW_ERROR;
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}
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if (!(chans = gst_a52dec_channels (flags, NULL)))
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goto no_channels;
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result =
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gst_pad_alloc_buffer_and_set_caps (srcpad, 0,
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256 * chans * (SAMPLE_WIDTH / 8), GST_PAD_CAPS (srcpad), &buf);
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if (result != GST_FLOW_OK)
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return result;
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buf = gst_buffer_new_allocate (NULL, 256 * chans * (SAMPLE_WIDTH / 8), 0);
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data = gst_buffer_map (buf, NULL, NULL, GST_MAP_WRITE);
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for (n = 0; n < 256; n++) {
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for (c = 0; c < chans; c++) {
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((sample_t *) GST_BUFFER_DATA (buf))[n * chans + c] =
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samples[c * 256 + n];
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data[n * chans + c] = samples[c * 256 + n];
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}
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}
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gst_buffer_unmap (buf, data, -1);
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GST_BUFFER_TIMESTAMP (buf) = timestamp;
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GST_BUFFER_DURATION (buf) = 256 * GST_SECOND / a52dec->sample_rate;
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@ -419,6 +407,14 @@ gst_a52dec_push (GstA52Dec * a52dec,
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}
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}
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return result;
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/* ERRORS */
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no_channels:
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{
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GST_ELEMENT_ERROR (GST_ELEMENT (a52dec), STREAM, DECODE, (NULL),
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("invalid channel flags: %d", flags));
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return GST_FLOW_ERROR;
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}
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}
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static gboolean
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@ -435,9 +431,8 @@ gst_a52dec_reneg (GstA52Dec * a52dec, GstPad * pad)
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GST_INFO_OBJECT (a52dec, "reneg channels:%d rate:%d",
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channels, a52dec->sample_rate);
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caps = gst_caps_new_simple ("audio/x-raw-float",
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"endianness", G_TYPE_INT, G_BYTE_ORDER,
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"width", G_TYPE_INT, SAMPLE_WIDTH,
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caps = gst_caps_new_simple ("audio/x-raw",
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"format", G_TYPE_STRING, SAMPLE_FORMAT,
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"channels", G_TYPE_INT, channels,
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"rate", G_TYPE_INT, a52dec->sample_rate, NULL);
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gst_audio_set_channel_positions (gst_caps_get_structure (caps, 0), pos);
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@ -454,6 +449,21 @@ done:
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return result;
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}
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static gboolean
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gst_a52dec_sink_setcaps (GstA52Dec * a52dec, GstCaps * caps)
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{
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GstStructure *structure;
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structure = gst_caps_get_structure (caps, 0);
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if (structure && gst_structure_has_name (structure, "audio/x-private1-ac3"))
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a52dec->dvdmode = TRUE;
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else
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a52dec->dvdmode = FALSE;
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return TRUE;
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}
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static gboolean
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gst_a52dec_sink_event (GstPad * pad, GstEvent * event)
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{
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@ -463,42 +473,43 @@ gst_a52dec_sink_event (GstPad * pad, GstEvent * event)
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GST_LOG ("Handling %s event", GST_EVENT_TYPE_NAME (event));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_NEWSEGMENT:
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case GST_EVENT_CAPS:
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{
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GstFormat fmt;
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gboolean update;
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gint64 start, end, pos;
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gdouble rate, arate;
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GstCaps *caps;
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gst_event_parse_new_segment_full (event, &update, &rate, &arate, &fmt,
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&start, &end, &pos);
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gst_event_parse_caps (event, &caps);
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ret = gst_a52dec_sink_setcaps (a52dec, caps);
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gst_event_unref (event);
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break;
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}
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case GST_EVENT_SEGMENT:
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{
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GstSegment seg;
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gst_event_copy_segment (event, &seg);
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/* drain queued buffers before activating the segment so that we can clip
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* against the old segment first */
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gst_a52dec_drain (a52dec);
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if (fmt != GST_FORMAT_TIME || !GST_CLOCK_TIME_IS_VALID (start)) {
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if (seg.format != GST_FORMAT_TIME || !GST_CLOCK_TIME_IS_VALID (seg.start)) {
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GST_WARNING ("No time in newsegment event %p (format is %s)",
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event, gst_format_get_name (fmt));
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event, gst_format_get_name (seg.format));
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gst_event_unref (event);
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a52dec->sent_segment = FALSE;
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/* set some dummy values, FIXME: do proper conversion */
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a52dec->time = start = pos = 0;
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fmt = GST_FORMAT_TIME;
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end = -1;
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a52dec->time = seg.start = seg.position = 0;
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seg.format = GST_FORMAT_TIME;
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seg.stop = -1;
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} else {
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a52dec->time = start;
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a52dec->time = seg.start;
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a52dec->sent_segment = TRUE;
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GST_DEBUG_OBJECT (a52dec,
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"Pushing newseg rate %g, applied rate %g, format %d, start %"
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G_GINT64_FORMAT ", stop %" G_GINT64_FORMAT ", pos %"
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G_GINT64_FORMAT, rate, arate, fmt, start, end, pos);
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GST_DEBUG_OBJECT (a52dec, "Pushing segment %" GST_SEGMENT_FORMAT, &seg);
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ret = gst_pad_push_event (a52dec->srcpad, event);
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}
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gst_segment_set_newsegment (&a52dec->segment, update, rate, fmt, start,
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end, pos);
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a52dec->segment = seg;
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break;
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}
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case GST_EVENT_TAG:
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@ -664,24 +675,6 @@ gst_a52dec_handle_frame (GstA52Dec * a52dec, guint8 * data,
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return GST_FLOW_OK;
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}
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static gboolean
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gst_a52dec_sink_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstA52Dec *a52dec = GST_A52DEC (gst_pad_get_parent (pad));
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GstStructure *structure;
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structure = gst_caps_get_structure (caps, 0);
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if (structure && gst_structure_has_name (structure, "audio/x-private1-ac3"))
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a52dec->dvdmode = TRUE;
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else
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a52dec->dvdmode = FALSE;
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gst_object_unref (a52dec);
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return TRUE;
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}
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static GstFlowReturn
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gst_a52dec_chain (GstPad * pad, GstBuffer * buf)
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{
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@ -701,12 +694,13 @@ gst_a52dec_chain (GstPad * pad, GstBuffer * buf)
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}
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if (a52dec->dvdmode) {
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gint size = GST_BUFFER_SIZE (buf);
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guchar *data = GST_BUFFER_DATA (buf);
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gsize size;
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guint8 data[2];
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gint offset;
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gint len;
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GstBuffer *subbuf;
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size = gst_buffer_extract (buf, 0, data, 2);
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if (size < 2)
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goto not_enough_data;
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@ -722,7 +716,7 @@ gst_a52dec_chain (GstPad * pad, GstBuffer * buf)
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if (len <= 0 || offset + len > size)
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goto bad_first_access_parameter;
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subbuf = gst_buffer_create_sub (buf, offset, len);
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subbuf = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, offset, len);
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GST_BUFFER_TIMESTAMP (subbuf) = GST_CLOCK_TIME_NONE;
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ret = gst_a52dec_chain_raw (pad, subbuf);
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if (ret != GST_FLOW_OK)
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@ -732,14 +726,16 @@ gst_a52dec_chain (GstPad * pad, GstBuffer * buf)
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len = size - offset;
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if (len > 0) {
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subbuf = gst_buffer_create_sub (buf, offset, len);
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subbuf = gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, offset, len);
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GST_BUFFER_TIMESTAMP (subbuf) = GST_BUFFER_TIMESTAMP (buf);
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ret = gst_a52dec_chain_raw (pad, subbuf);
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}
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} else {
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/* first_access = 0 or 1, so if there's a timestamp it applies to the first byte */
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subbuf = gst_buffer_create_sub (buf, offset, size - offset);
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subbuf =
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gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, offset,
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size - offset);
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GST_BUFFER_TIMESTAMP (subbuf) = GST_BUFFER_TIMESTAMP (buf);
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ret = gst_a52dec_chain_raw (pad, subbuf);
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}
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@ -773,8 +769,8 @@ static GstFlowReturn
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gst_a52dec_chain_raw (GstPad * pad, GstBuffer * buf)
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{
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GstA52Dec *a52dec;
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guint8 *data;
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guint size;
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guint8 *bdata, *data;
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gsize bsize, size;
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gint length = 0, flags, sample_rate, bit_rate;
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GstFlowReturn result = GST_FLOW_OK;
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@ -790,9 +786,7 @@ gst_a52dec_chain_raw (GstPad * pad, GstBuffer * buf)
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* new-segment event
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*/
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gst_segment_init (&segment, GST_FORMAT_TIME);
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gst_pad_push_event (a52dec->srcpad, gst_event_new_new_segment (FALSE,
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segment.rate, segment.format, segment.start,
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segment.duration, segment.start));
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gst_pad_push_event (a52dec->srcpad, gst_event_new_segment (&segment));
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a52dec->sent_segment = TRUE;
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}
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@ -809,8 +803,10 @@ gst_a52dec_chain_raw (GstPad * pad, GstBuffer * buf)
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buf = gst_buffer_join (a52dec->cache, buf);
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a52dec->cache = NULL;
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}
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data = GST_BUFFER_DATA (buf);
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size = GST_BUFFER_SIZE (buf);
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bdata = gst_buffer_map (buf, &bsize, NULL, GST_MAP_READ);
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data = bdata;
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size = bsize;
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/* find and read header */
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bit_rate = a52dec->bit_rate;
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@ -844,6 +840,7 @@ gst_a52dec_chain_raw (GstPad * pad, GstBuffer * buf)
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break;
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}
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}
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gst_buffer_unmap (buf, bdata, bsize);
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/* keep cache */
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if (length == 0) {
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@ -851,8 +848,8 @@ gst_a52dec_chain_raw (GstPad * pad, GstBuffer * buf)
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}
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if (size > 0) {
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a52dec->cache = gst_buffer_create_sub (buf,
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GST_BUFFER_SIZE (buf) - size, size);
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a52dec->cache =
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gst_buffer_copy_region (buf, GST_BUFFER_COPY_ALL, bsize - size, size);
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}
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gst_buffer_unref (buf);
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