From 9f0c73f4844cf764f00e9c98f5c61f09d55e1f4d Mon Sep 17 00:00:00 2001 From: Michael Smith Date: Wed, 31 Aug 2005 11:53:35 +0000 Subject: [PATCH] Port LPCM decoder to 0.9 Original commit message from CVS: Port LPCM decoder to 0.9 --- ChangeLog | 10 + configure.ac | 1 + gst/dvdlpcmdec/Makefile.am | 9 + gst/dvdlpcmdec/gstdvdlpcmdec.c | 442 +++++++++++++++++++++++++++++++++ gst/dvdlpcmdec/gstdvdlpcmdec.h | 67 +++++ 5 files changed, 529 insertions(+) create mode 100644 gst/dvdlpcmdec/Makefile.am create mode 100644 gst/dvdlpcmdec/gstdvdlpcmdec.c create mode 100644 gst/dvdlpcmdec/gstdvdlpcmdec.h diff --git a/ChangeLog b/ChangeLog index 91cec147f1..0c62918c7e 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,13 @@ +2005-08-31 Michael Smith + + * configure.ac: + * gst/dvdlpcmdec/Makefile.am: + * gst/dvdlpcmdec/gstdvdlpcmdec.c: (gst_dvdlpcm_reset), + (gst_dvdlpcmdec_init), (gst_dvdlpcmdec_link), (update_timestamps), + (gst_dvdlpcmdec_chain): + * gst/dvdlpcmdec/gstdvdlpcmdec.h: + Port LPCM decoder to 0.9 + 2005-08-30 Jan Schmidt * configure.ac: diff --git a/configure.ac b/configure.ac index 43808d2cc0..c3acfc52b8 100644 --- a/configure.ac +++ b/configure.ac @@ -520,6 +520,7 @@ Makefile gst-plugins.spec gst/Makefile gst/mpegaudioparse/Makefile +gst/dvdlpcmdec/Makefile gst/qtdemux/Makefile gst/realmedia/Makefile gst/silence/Makefile diff --git a/gst/dvdlpcmdec/Makefile.am b/gst/dvdlpcmdec/Makefile.am new file mode 100644 index 0000000000..31e5116912 --- /dev/null +++ b/gst/dvdlpcmdec/Makefile.am @@ -0,0 +1,9 @@ + +plugin_LTLIBRARIES = libgstdvdlpcmdec.la + +libgstdvdlpcmdec_la_SOURCES = gstdvdlpcmdec.c +libgstdvdlpcmdec_la_CFLAGS = $(GST_CFLAGS) +libgstdvdlpcmdec_la_LIBADD = +libgstdvdlpcmdec_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) + +noinst_HEADERS = gstdvdlpcmdec.h diff --git a/gst/dvdlpcmdec/gstdvdlpcmdec.c b/gst/dvdlpcmdec/gstdvdlpcmdec.c new file mode 100644 index 0000000000..6b153ac577 --- /dev/null +++ b/gst/dvdlpcmdec/gstdvdlpcmdec.c @@ -0,0 +1,442 @@ +/* GStreamer + * Copyright (C) <1999> Erik Walthinsen + * Copyright (C) <2005> Jan Schmidt + * + * 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. + */ +/* Element-Checklist-Version: TODO */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif +#include +#include + +#include "gstdvdlpcmdec.h" + +GST_DEBUG_CATEGORY_STATIC (dvdlpcm_debug); +#define GST_CAT_DEFAULT dvdlpcm_debug + +/* elementfactory information */ +static GstElementDetails gst_dvdlpcmdec_details = +GST_ELEMENT_DETAILS ("DVD LPCM Audio decoder", + "Codec/Demuxer/Audio", + "Decode DVD LPCM frames into standard PCM audio", + "Jan Schmidt "); + +static GstStaticPadTemplate gst_dvdlpcmdec_sink_template = +GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/x-dvd-lpcm, " + "width = (int) { 16, 20, 24 }, " + "rate = (int) { 48000, 96000 }, " + "channels = (int) [ 1, 8 ], " + "dynamic_range = (int) [ 0, 255 ], " + "emphasis = (boolean) { TRUE, FALSE }, " + "mute = (boolean) { TRUE, FALSE }") + ); + +static GstStaticPadTemplate gst_dvdlpcmdec_src_template = +GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS ("audio/x-raw-int, " + "width = (int) { 16, 24 }, " + "rate = (int) { 48000, 96000 }, " + "channels = (int) [ 1, 8 ], " + "endianness = (int) { BIG_ENDIAN }, " + "depth = (int) { 16, 24 }, " "signed = (boolean) { true }") + ); + +/* DvdLpcmDec signals and args */ +enum +{ + /* FILL ME */ + LAST_SIGNAL +}; + +enum +{ + ARG_0 + /* FILL ME */ +}; + +static void gst_dvdlpcmdec_base_init (gpointer g_class); +static void gst_dvdlpcmdec_class_init (GstDvdLpcmDecClass * klass); +static void gst_dvdlpcmdec_init (GstDvdLpcmDec * dvdlpcmdec); + +static GstFlowReturn gst_dvdlpcmdec_chain (GstPad * pad, GstBuffer * buffer); +static GstPadLinkReturn gst_dvdlpcmdec_link (GstPad * pad, GstPad * peer); + +static GstElementStateReturn gst_dvdlpcmdec_change_state (GstElement * element); + +static GstElementClass *parent_class = NULL; + +GType +gst_dvdlpcmdec_get_type (void) +{ + static GType dvdlpcmdec_type = 0; + + if (!dvdlpcmdec_type) { + static const GTypeInfo dvdlpcmdec_info = { + sizeof (GstDvdLpcmDecClass), + gst_dvdlpcmdec_base_init, + NULL, + (GClassInitFunc) gst_dvdlpcmdec_class_init, + NULL, + NULL, + sizeof (GstDvdLpcmDec), + 0, + (GInstanceInitFunc) gst_dvdlpcmdec_init, + }; + + dvdlpcmdec_type = + g_type_register_static (GST_TYPE_ELEMENT, "GstDvdLpcmDec", + &dvdlpcmdec_info, 0); + } + return dvdlpcmdec_type; +} + +static void +gst_dvdlpcmdec_base_init (gpointer g_class) +{ + GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); + + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&gst_dvdlpcmdec_sink_template)); + gst_element_class_add_pad_template (element_class, + gst_static_pad_template_get (&gst_dvdlpcmdec_src_template)); + gst_element_class_set_details (element_class, &gst_dvdlpcmdec_details); +} + +static void +gst_dvdlpcmdec_class_init (GstDvdLpcmDecClass * klass) +{ + GstElementClass *gstelement_class; + + gstelement_class = (GstElementClass *) klass; + + parent_class = g_type_class_ref (GST_TYPE_ELEMENT); + + gstelement_class->change_state = gst_dvdlpcmdec_change_state; +} + +static void +gst_dvdlpcm_reset (GstDvdLpcmDec * dvdlpcmdec) +{ + dvdlpcmdec->rate = 0; + dvdlpcmdec->channels = 0; + dvdlpcmdec->width = 0; + dvdlpcmdec->out_width = 0; + dvdlpcmdec->dynamic_range = 0; + dvdlpcmdec->emphasis = FALSE; + dvdlpcmdec->mute = FALSE; + dvdlpcmdec->offset = 0; + dvdlpcmdec->timestamp = 0; + + GST_LOG_OBJECT (dvdlpcmdec, "Setting NULL caps on src pad"); + gst_pad_set_caps (dvdlpcmdec->srcpad, NULL); +} + +static void +gst_dvdlpcmdec_init (GstDvdLpcmDec * dvdlpcmdec) +{ + dvdlpcmdec->sinkpad = + gst_pad_new_from_template (gst_static_pad_template_get + (&gst_dvdlpcmdec_sink_template), "sink"); + gst_pad_set_link_function (dvdlpcmdec->sinkpad, gst_dvdlpcmdec_link); + gst_pad_set_chain_function (dvdlpcmdec->sinkpad, gst_dvdlpcmdec_chain); + gst_element_add_pad (GST_ELEMENT (dvdlpcmdec), dvdlpcmdec->sinkpad); + + dvdlpcmdec->srcpad = + gst_pad_new_from_template (gst_static_pad_template_get + (&gst_dvdlpcmdec_src_template), "src"); + gst_element_add_pad (GST_ELEMENT (dvdlpcmdec), dvdlpcmdec->srcpad); + + gst_dvdlpcm_reset (dvdlpcmdec); +} + + +static GstPadLinkReturn +gst_dvdlpcmdec_link (GstPad * pad, GstPad * peer) +{ + GstStructure *structure; + gboolean res = TRUE; + GstDvdLpcmDec *dvdlpcmdec; + GstCaps *src_caps; + GstCaps *caps; + + g_return_val_if_fail (peer != NULL, GST_PAD_LINK_REFUSED); + g_return_val_if_fail (pad != NULL, GST_PAD_LINK_REFUSED); + + dvdlpcmdec = GST_DVDLPCMDEC (gst_pad_get_parent (pad)); + + caps = gst_pad_get_caps (peer); + structure = gst_caps_get_structure (caps, 0); + + res &= gst_structure_get_int (structure, "rate", &dvdlpcmdec->rate); + res &= gst_structure_get_int (structure, "channels", &dvdlpcmdec->channels); + res &= gst_structure_get_int (structure, "width", &dvdlpcmdec->width); + res &= gst_structure_get_int (structure, "dynamic_range", + &dvdlpcmdec->dynamic_range); + res &= gst_structure_get_boolean (structure, "emphasis", + &dvdlpcmdec->emphasis); + res &= gst_structure_get_boolean (structure, "mute", &dvdlpcmdec->mute); + + if (!res) { + GST_DEBUG_OBJECT (dvdlpcmdec, "Couldn't get parameters; missing caps?"); + return GST_PAD_LINK_REFUSED; + } + + /* Output width is the input width rounded up to the nearest byte */ + if (dvdlpcmdec->width == 20) + dvdlpcmdec->out_width = 24; + else + dvdlpcmdec->out_width = dvdlpcmdec->width; + + /* Build caps to set on the src pad, which we know from the incoming caps */ + src_caps = gst_caps_new_simple ("audio/x-raw-int", + "rate", G_TYPE_INT, dvdlpcmdec->rate, + "channels", G_TYPE_INT, dvdlpcmdec->channels, + "endianness", G_TYPE_INT, G_BIG_ENDIAN, + "depth", G_TYPE_INT, dvdlpcmdec->out_width, + "width", G_TYPE_INT, dvdlpcmdec->out_width, + "signed", G_TYPE_BOOLEAN, TRUE, NULL); + + GST_DEBUG_OBJECT (dvdlpcmdec, "Set rate %d, channels %d, width %d (out %d)", + dvdlpcmdec->rate, dvdlpcmdec->channels, dvdlpcmdec->width, + dvdlpcmdec->out_width); + + if (!gst_pad_set_caps (dvdlpcmdec->srcpad, src_caps)) { + GST_DEBUG_OBJECT (dvdlpcmdec, "Failed to set caps!"); + res = FALSE; + } else { + GST_DEBUG_OBJECT (dvdlpcmdec, "Successfully set caps: %" GST_PTR_FORMAT, + caps); + } + + gst_caps_unref (src_caps); + + if (!res) + return GST_PAD_LINK_REFUSED; + + return GST_PAD_LINK_OK; +} + +static void +update_timestamps (GstDvdLpcmDec * dvdlpcmdec, GstBuffer * buf, int samples) +{ + GST_BUFFER_DURATION (buf) = samples * GST_SECOND / dvdlpcmdec->rate; + if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) { + /* Then leave it as-is, and save this timestamp */ + dvdlpcmdec->timestamp = GST_BUFFER_TIMESTAMP (buf); + } else { + dvdlpcmdec->timestamp += GST_BUFFER_DURATION (buf); + GST_BUFFER_TIMESTAMP (buf) = dvdlpcmdec->timestamp; + } + + GST_LOG_OBJECT (dvdlpcmdec, "Updated timestamp to %" GST_TIME_FORMAT, + GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf))); +} + +static GstFlowReturn +gst_dvdlpcmdec_chain (GstPad * pad, GstBuffer * buf) +{ + GstDvdLpcmDec *dvdlpcmdec; + gint64 size; + + g_return_val_if_fail (pad != NULL, GST_FLOW_ERROR); + g_return_val_if_fail (GST_IS_PAD (pad), GST_FLOW_ERROR); + g_return_val_if_fail (buf != NULL, GST_FLOW_ERROR); + + dvdlpcmdec = GST_DVDLPCMDEC (gst_pad_get_parent (pad)); + + size = GST_BUFFER_SIZE (buf); + + GST_LOG_OBJECT (dvdlpcmdec, "got buffer %p of size %" G_GINT64_FORMAT, buf, + size); + + if (dvdlpcmdec->rate == 0) { + GST_ELEMENT_ERROR (dvdlpcmdec, STREAM, FORMAT, (NULL), + ("Buffer pushed before negotiation")); + gst_buffer_unref (buf); + return GST_FLOW_ERROR; + } + + if (!GST_PAD_IS_USABLE (dvdlpcmdec->srcpad)) { + GST_DEBUG_OBJECT (dvdlpcmdec, "Discarding buffer on disabled pad"); + gst_buffer_unref (buf); + return GST_FLOW_ERROR; + } + + /* We don't currently do anything at all regarding emphasis, mute or + * dynamic_range - I'm not sure what they're for */ + switch (dvdlpcmdec->width) { + case 16: + { + /* We can just pass 16-bits straight through intact, once we set + * appropriate things on the buffer */ + int samples; + + samples = size / dvdlpcmdec->channels / 2; + + /* Set appropriate caps on it to pass downstream */ + gst_buffer_set_caps (buf, GST_PAD_CAPS (dvdlpcmdec->srcpad)); + + update_timestamps (dvdlpcmdec, buf, samples); + + dvdlpcmdec->offset += size; + gst_pad_push (dvdlpcmdec->srcpad, buf); + return GST_FLOW_OK; + } + case 20: + { + /* Allocate a new buffer and copy 20-bit width to 24-bit */ + gint64 samples = size * 8 / 20; + gint64 count = size / 10; + gint64 i; + guchar *src; + guchar *dest; + GstBuffer *outbuf; + GstFlowReturn newbufret; + GstCaps *bufcaps = GST_PAD_CAPS (dvdlpcmdec->srcpad); + + newbufret = gst_pad_alloc_buffer (dvdlpcmdec->srcpad, dvdlpcmdec->offset, + samples * 3, bufcaps, &outbuf); + if (newbufret != GST_FLOW_OK) { + GST_ELEMENT_ERROR (dvdlpcmdec, RESOURCE, FAILED, (NULL), + ("Buffer allocation failed")); + gst_buffer_unref (buf); + return GST_FLOW_ERROR; + } + gst_buffer_stamp (outbuf, buf); + + update_timestamps (dvdlpcmdec, buf, samples / dvdlpcmdec->channels); + + src = GST_BUFFER_DATA (buf); + dest = GST_BUFFER_DATA (outbuf); + + /* Copy 20-bit LPCM format to 24-bit buffers, with 0x00 in the lowest + * nibble. Note that the first 2 bytes are already correct */ + for (i = 0; i < count; i++) { + dest[0] = src[0]; + dest[1] = src[1]; + dest[2] = src[8] & 0xf0; + dest[3] = src[2]; + dest[4] = src[3]; + dest[5] = (src[8] & 0x0f) << 4; + dest[6] = src[4]; + dest[7] = src[5]; + dest[8] = src[9] & 0x0f; + dest[9] = src[6]; + dest[10] = src[7]; + dest[11] = (src[9] & 0x0f) << 4; + + src += 10; + dest += 12; + } + + gst_buffer_unref (buf); + dvdlpcmdec->offset += GST_BUFFER_SIZE (outbuf); + gst_pad_push (dvdlpcmdec->srcpad, outbuf); + return GST_FLOW_OK; + } + case 24: + { + /* Rearrange 24-bit LPCM format in-place. Note that the first 2 + * and last byte are already correct */ + gint64 count = size / 12; + gint64 i; + guchar *src; + int samples = size / dvdlpcmdec->channels / 3; + + /* Ensure our output buffer is writable */ + buf = gst_buffer_make_writable (buf); + + /* And set appropriate caps on it */ + gst_buffer_set_caps (buf, GST_PAD_CAPS (dvdlpcmdec->srcpad)); + update_timestamps (dvdlpcmdec, buf, samples); + + src = GST_BUFFER_DATA (buf); + + for (i = 0; i < count; i++) { + guchar temp[9]; + + temp[0] = src[8]; + temp[1] = src[2]; + temp[2] = src[3]; + temp[3] = src[9]; + temp[4] = src[4]; + temp[5] = src[5]; + temp[6] = src[10]; + temp[7] = src[6]; + temp[8] = src[7]; + + memcpy (src + 2, temp, 9); + src += 12; + } + + dvdlpcmdec->offset += GST_BUFFER_SIZE (buf); + gst_pad_push (dvdlpcmdec->srcpad, buf); + return GST_FLOW_OK; + } + default: + GST_ELEMENT_ERROR (dvdlpcmdec, STREAM, WRONG_TYPE, (NULL), + ("Invalid sample width configured")); + gst_buffer_unref (buf); + return GST_FLOW_ERROR; + } + +} + +static GstElementStateReturn +gst_dvdlpcmdec_change_state (GstElement * element) +{ + GstDvdLpcmDec *dvdlpcmdec = GST_DVDLPCMDEC (element); + + switch (GST_STATE_TRANSITION (element)) { + case GST_STATE_PAUSED_TO_READY: + gst_dvdlpcm_reset (dvdlpcmdec); + break; + default: + break; + } + + if (parent_class->change_state) + return parent_class->change_state (element); + + return GST_STATE_SUCCESS; +} + +static gboolean +plugin_init (GstPlugin * plugin) +{ + GST_DEBUG_CATEGORY_INIT (dvdlpcm_debug, "dvdlpcmdec", 0, "DVD LPCM Decoder"); + + if (!gst_element_register (plugin, "dvdlpcmdec", GST_RANK_PRIMARY, + GST_TYPE_DVDLPCMDEC)) { + return FALSE; + } + + return TRUE; +} + +GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, + GST_VERSION_MINOR, + "dvdlpcmdec", + "Decode DVD LPCM frames into standard PCM", + plugin_init, VERSION, "LGPL", GST_PACKAGE, GST_ORIGIN) diff --git a/gst/dvdlpcmdec/gstdvdlpcmdec.h b/gst/dvdlpcmdec/gstdvdlpcmdec.h new file mode 100644 index 0000000000..9c349bbe48 --- /dev/null +++ b/gst/dvdlpcmdec/gstdvdlpcmdec.h @@ -0,0 +1,67 @@ +/* GStreamer + * Copyright (C) <1999> Erik Walthinsen + * Copyright (C) <2005> Jan Schmidt + * + * 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. + */ + +#ifndef __GST_DVDLPCMDEC_H__ +#define __GST_DVDLPCMDEC_H__ + +#include + +G_BEGIN_DECLS + +#define GST_TYPE_DVDLPCMDEC \ + (gst_dvdlpcmdec_get_type()) +#define GST_DVDLPCMDEC(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DVDLPCMDEC,GstDvdLpcmDec)) +#define GST_DVDLPCMDEC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DVDLPCMDEC,GstDvdLpcmDec)) +#define GST_IS_DVDLPCMDEC(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DVDLPCMDEC)) +#define GST_IS_DVDLPCMDEC_CLASS(obj) \ + (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DVDLPCMDEC)) + +typedef struct _GstDvdLpcmDec GstDvdLpcmDec; +typedef struct _GstDvdLpcmDecClass GstDvdLpcmDecClass; + +struct _GstDvdLpcmDec { + GstElement element; + + GstPad *sinkpad,*srcpad; + + gint rate; + gint channels; + gint width; + gint out_width; + gint dynamic_range; + gint emphasis; + gint mute; + + guint64 offset; + GstClockTime timestamp; +}; + +struct _GstDvdLpcmDecClass { + GstElementClass parent_class; +}; + +GType gst_dvdlpcmdec_get_type (void); + +G_END_DECLS + +#endif /* __GST_DVDLPCMDEC_H__ */