diff options
Diffstat (limited to 'ext/faad/gstfaad.c')
| -rw-r--r-- | ext/faad/gstfaad.c | 473 |
1 files changed, 473 insertions, 0 deletions
diff --git a/ext/faad/gstfaad.c b/ext/faad/gstfaad.c new file mode 100644 index 00000000..fcb59ff5 --- /dev/null +++ b/ext/faad/gstfaad.c @@ -0,0 +1,473 @@ +/* GStreamer FAAD (Free AAC Decoder) plugin + * Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <string.h> + +#include "gstfaad.h" + +GST_PAD_TEMPLATE_FACTORY (sink_template, + "sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_CAPS_NEW ( + "faad_mpeg_templ", + "audio/mpeg", + "systemstream", GST_PROPS_BOOLEAN (FALSE), + "mpegversion", GST_PROPS_LIST ( + GST_PROPS_INT (2), + GST_PROPS_INT (4) + ) + ) +); + +GST_PAD_TEMPLATE_FACTORY (src_template, + "src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_CAPS_NEW ( + "faad_int_templ", + "audio/x-raw-int", + "endianness", GST_PROPS_INT (G_BYTE_ORDER), + "signed", GST_PROPS_BOOLEAN (TRUE), + "width", GST_PROPS_LIST ( + GST_PROPS_INT (16), + GST_PROPS_INT (24), + GST_PROPS_INT (32) + ), + "depth", GST_PROPS_LIST ( + GST_PROPS_INT (16), + GST_PROPS_INT (24), + GST_PROPS_INT (32) + ), + "rate", GST_PROPS_INT_RANGE (8000, 96000), + "channels", GST_PROPS_INT_RANGE (1, 6) + ), + GST_CAPS_NEW ( + "faad_float_templ", + "audio/x-raw-float", + "endianness", GST_PROPS_INT (G_BYTE_ORDER), + "depth", GST_PROPS_LIST ( + GST_PROPS_INT (32), /* float */ + GST_PROPS_INT (64) /* double */ + ), + "rate", GST_PROPS_INT_RANGE (8000, 96000), + "channels", GST_PROPS_INT_RANGE (1, 6) + ) +); + +static void gst_faad_base_init (GstFaadClass *klass); +static void gst_faad_class_init (GstFaadClass *klass); +static void gst_faad_init (GstFaad *faad); + +static GstPadLinkReturn + gst_faad_sinkconnect (GstPad *pad, + GstCaps *caps); +static GstPadLinkReturn + gst_faad_srcconnect (GstPad *pad, + GstCaps *caps); +static GstCaps *gst_faad_srcgetcaps (GstPad *pad, + GstCaps *caps); +static void gst_faad_chain (GstPad *pad, + GstData *data); +static GstElementStateReturn + gst_faad_change_state (GstElement *element); + +static GstElementClass *parent_class = NULL; +/* static guint gst_lame_signals[LAST_SIGNAL] = { 0 }; */ + +GType +gst_faad_get_type (void) +{ + static GType gst_faad_type = 0; + + if (!gst_faad_type) { + static const GTypeInfo gst_faad_info = { + sizeof (GstFaadClass), + (GBaseInitFunc) gst_faad_base_init, + NULL, + (GClassInitFunc) gst_faad_class_init, + NULL, + NULL, + sizeof(GstFaad), + 0, + (GInstanceInitFunc) gst_faad_init, + }; + + gst_faad_type = g_type_register_static (GST_TYPE_ELEMENT, + "GstFaad", + &gst_faad_info, 0); + } + + return gst_faad_type; +} + +static void +gst_faad_base_init (GstFaadClass *klass) +{ + GstElementDetails gst_faad_details = { + "Free AAC Decoder (FAAD)", + "Codec/Audio/Decoder", + "Free MPEG-2/4 AAC decoder", + "Ronald Bultje <rbultje@ronald.bitfreak.net>", + }; + GstElementClass *element_class = GST_ELEMENT_CLASS (klass); + + gst_element_class_add_pad_template (element_class, + GST_PAD_TEMPLATE_GET (src_template)); + gst_element_class_add_pad_template (element_class, + GST_PAD_TEMPLATE_GET (sink_template)); + + gst_element_class_set_details (element_class, &gst_faad_details); +} + +static void +gst_faad_class_init (GstFaadClass *klass) +{ + GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass); + + parent_class = g_type_class_ref (GST_TYPE_ELEMENT); + + gstelement_class->change_state = gst_faad_change_state; +} + +static void +gst_faad_init (GstFaad *faad) +{ + faad->handle = NULL; + faad->samplerate = -1; + faad->channels = -1; + + faad->sinkpad = gst_pad_new_from_template ( + GST_PAD_TEMPLATE_GET (sink_template), "sink"); + gst_element_add_pad (GST_ELEMENT (faad), faad->sinkpad); + gst_pad_set_chain_function (faad->sinkpad, gst_faad_chain); + gst_pad_set_link_function (faad->sinkpad, gst_faad_sinkconnect); + + faad->srcpad = gst_pad_new_from_template ( + GST_PAD_TEMPLATE_GET (src_template), "src"); + gst_element_add_pad (GST_ELEMENT (faad), faad->srcpad); + gst_pad_set_link_function (faad->srcpad, gst_faad_srcconnect); + gst_pad_set_getcaps_function (faad->srcpad, gst_faad_srcgetcaps); +} + +static GstPadLinkReturn +gst_faad_sinkconnect (GstPad *pad, + GstCaps *caps) +{ + if (!GST_CAPS_IS_FIXED (caps)) + return GST_PAD_LINK_DELAYED; + + /* oh, we really don't care what's in here. We'll + * get AAC audio (MPEG-2/4) anyway, so why bother? */ + return GST_PAD_LINK_OK; +} + +static GstCaps * +gst_faad_srcgetcaps (GstPad *pad, + GstCaps *caps) +{ + GstFaad *faad = GST_FAAD (gst_pad_get_parent (pad)); + + if (faad->handle != NULL && + faad->channels != -1 && faad->samplerate != -1) { + faacDecConfiguration *conf; + GstCaps *caps; + + conf = faacDecGetCurrentConfiguration (faad->handle); + + switch (conf->outputFormat) { + case FAAD_FMT_16BIT: + caps = GST_CAPS_NEW ("faad_src_int16", + "audio/x-raw-int", + "signed", GST_PROPS_BOOLEAN (TRUE), + "width", GST_PROPS_INT (16), + "depth", GST_PROPS_INT (16)); + break; + case FAAD_FMT_24BIT: + caps = GST_CAPS_NEW ("faad_src_int24", + "audio/x-raw-int", + "signed", GST_PROPS_BOOLEAN (TRUE), + "width", GST_PROPS_INT (24), + "depth", GST_PROPS_INT (24)); + break; + case FAAD_FMT_32BIT: + caps = GST_CAPS_NEW ("faad_src_int32", + "audio/x-raw-int", + "signed", GST_PROPS_BOOLEAN (TRUE), + "width", GST_PROPS_INT (32), + "depth", GST_PROPS_INT (32)); + break; + case FAAD_FMT_FLOAT: + caps = GST_CAPS_NEW ("faad_src_float32", + "audio/x-raw-float", + "depth", GST_PROPS_INT (32)); + break; + case FAAD_FMT_DOUBLE: + caps = GST_CAPS_NEW ("faad_src_float64", + "audio/x-raw-float", + "depth", GST_PROPS_INT (64)); + break; + default: + caps = GST_CAPS_NONE; + break; + } + + if (caps) { + GstPropsEntry *samplerate, *channels, *endianness; + + if (faad->samplerate != -1) { + samplerate = gst_props_entry_new ("rate", + GST_PROPS_INT (faad->samplerate)); + } else { + samplerate = gst_props_entry_new ("rate", + GST_PROPS_INT_RANGE (8000, 96000)); + } + gst_props_add_entry (caps->properties, samplerate); + + if (faad->channels != -1) { + channels = gst_props_entry_new ("channels", + GST_PROPS_INT (faad->channels)); + } else { + channels = gst_props_entry_new ("channels", + GST_PROPS_INT_RANGE (1, 6)); + } + gst_props_add_entry (caps->properties, channels); + + endianness = gst_props_entry_new ("endianness", + GST_PROPS_INT (G_BYTE_ORDER)); + gst_props_add_entry (caps->properties, endianness); + } + + return caps; + } + + return gst_pad_template_get_caps ( + GST_PAD_TEMPLATE_GET (src_template)); +} + +static GstPadLinkReturn +gst_faad_srcconnect (GstPad *pad, + GstCaps *caps) +{ + GstFaad *faad = GST_FAAD (gst_pad_get_parent (pad)); + GstCaps *t; + + if (!faad->handle || + (faad->samplerate == -1 || faad->channels == -1)) { + return GST_PAD_LINK_DELAYED; + } + + /* we do samplerate/channels ourselves */ + for (t = caps; t != NULL; t = t->next) { + gst_props_remove_entry_by_name (t->properties, "rate"); + gst_props_remove_entry_by_name (t->properties, "channels"); + } + + /* go through list */ + caps = gst_caps_normalize (caps); + for ( ; caps != NULL; caps = caps->next) { + const gchar *mimetype = gst_caps_get_mime (caps); + gint depth = 0, fmt = 0; + + if (!strcmp (mimetype, "audio/x-raw-int")) { + gint width = 0; + + if (gst_caps_has_fixed_property (caps, "depth") && + gst_caps_has_fixed_property (caps, "width")) + gst_caps_get (caps, "depth", &depth, + "width", &width, NULL); + if (depth != width) + continue; + + switch (depth) { + case 16: + fmt = FAAD_FMT_16BIT; + break; + case 24: + fmt = FAAD_FMT_24BIT; + break; + case 32: + fmt = FAAD_FMT_32BIT; + break; + } + } else { + if (gst_caps_has_fixed_property (caps, "depth")) + gst_caps_get_int (caps, "depth", &depth); + + switch (depth) { + case 32: + fmt = FAAD_FMT_FLOAT; + break; + case 64: + fmt = FAAD_FMT_DOUBLE; + break; + } + } + + if (fmt) { + GstCaps *newcaps; + faacDecConfiguration *conf; + + conf = faacDecGetCurrentConfiguration (faad->handle); + conf->outputFormat = fmt; + conf->defObjectType = LC; + conf->defSampleRate = faad->samplerate; + faacDecSetConfiguration (faad->handle, conf); + /* FIXME: handle return value, how? */ + + newcaps = gst_faad_srcgetcaps (pad, NULL); + g_assert (GST_CAPS_IS_FIXED (newcaps)); + if (gst_pad_try_set_caps (pad, newcaps) > 0) { + faad->bps = depth * faad->channels / 8; + return GST_PAD_LINK_OK; + } + } + } + + return GST_PAD_LINK_REFUSED; +} + +static void +gst_faad_chain (GstPad *pad, + GstData *data) +{ + GstFaad *faad = GST_FAAD (gst_pad_get_parent (pad)); + GstBuffer *buf, *outbuf; + faacDecFrameInfo info; + void *out; + + if (GST_IS_EVENT (data)) { + GstEvent *event = GST_EVENT (data); + + switch (GST_EVENT_TYPE (event)) { + case GST_EVENT_EOS: + gst_element_set_eos (GST_ELEMENT (faad)); + gst_pad_push (faad->srcpad, data); + return; + default: + gst_pad_event_default (pad, event); + return; + } + } + + buf = GST_BUFFER (data); + + if (faad->samplerate == -1 || faad->channels == -1) { + gulong samplerate; + guchar channels; + + faacDecInit (faad->handle, + GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), + &samplerate, &channels); + faad->samplerate = samplerate; + faad->channels = channels; + if (gst_faad_srcconnect (faad->srcpad, + gst_pad_get_allowed_caps (faad->srcpad)) <= 0) { + gst_element_error (GST_ELEMENT (faad), + "Failed to negotiate output format with next element"); + gst_buffer_unref (buf); + return; + } + } + + out = faacDecDecode (faad->handle, &info, + GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf)); + if (info.error) { + gst_element_error (GST_ELEMENT (faad), + "Failed to decode buffer: %s", + faacDecGetErrorMessage (info.error)); + gst_buffer_unref (buf); + return; + } + if (info.samplerate != faad->samplerate || + info.channels != faad->channels) { + faad->samplerate = info.samplerate; + faad->channels = info.channels; + if (gst_faad_srcconnect (faad->srcpad, + gst_pad_get_allowed_caps (faad->srcpad)) <= 0) { + gst_element_error (GST_ELEMENT (faad), + "Failed to negotiate format with next element"); + gst_buffer_unref (buf); + return; + } + } + + /* FIXME: did it handle the whole buffer? */ + outbuf = gst_buffer_new_and_alloc (info.samples * faad->bps); + /* ugh */ + memcpy (GST_BUFFER_DATA (outbuf), out, GST_BUFFER_SIZE (outbuf)); + GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf); + GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf); + + gst_buffer_unref (buf); + gst_pad_push (faad->srcpad, GST_DATA (outbuf)); +} + +static GstElementStateReturn +gst_faad_change_state (GstElement *element) +{ + GstFaad *faad = GST_FAAD (element); + + switch (GST_STATE_TRANSITION (element)) { + case GST_STATE_NULL_TO_READY: + if (!(faad->handle = faacDecOpen ())) + return GST_STATE_FAILURE; + break; + case GST_STATE_PAUSED_TO_READY: + faad->samplerate = -1; + faad->channels = -1; + break; + case GST_STATE_READY_TO_NULL: + faacDecClose (faad->handle); + faad->handle = NULL; + break; + default: + break; + } + + if (GST_ELEMENT_CLASS (parent_class)->change_state) + return GST_ELEMENT_CLASS (parent_class)->change_state (element); + + return GST_STATE_SUCCESS; +} + +static gboolean +plugin_init (GstPlugin *plugin) +{ + return gst_element_register (plugin, "faad", + GST_RANK_PRIMARY, + GST_TYPE_FAAD); +} + +GST_PLUGIN_DEFINE ( + GST_VERSION_MAJOR, + GST_VERSION_MINOR, + "faad", + "Free AAC Decoder (FAAD)", + plugin_init, + VERSION, + "GPL", + GST_COPYRIGHT, + GST_PACKAGE, + GST_ORIGIN +) |