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-rw-r--r--sys/Makefile.am4
-rw-r--r--sys/acmmp3dec/Makefile.am9
-rw-r--r--sys/acmmp3dec/acmmp3dec.c375
3 files changed, 386 insertions, 2 deletions
diff --git a/sys/Makefile.am b/sys/Makefile.am
index 88d7b265..eb1ea726 100644
--- a/sys/Makefile.am
+++ b/sys/Makefile.am
@@ -53,13 +53,13 @@ WININET_DIR=
endif
if USE_ACM
-ACM_DIR=acmenc
+ACM_DIR=acmenc acmmp3dec
else
ACM_DIR=
endif
SUBDIRS = $(ACM_DIR) $(DVB_DIR) $(FBDEV_DIR) $(OSS4_DIR) $(QT_DIR) $(VCD_DIR) $(WININET_DIR)
-DIST_SUBDIRS = acmenc dvb fbdev dshowdecwrapper dshowsrcwrapper dshowvideosink \
+DIST_SUBDIRS = acmenc acmmp3dec dvb fbdev dshowdecwrapper dshowsrcwrapper dshowvideosink \
oss4 qtwrapper vcd wasapi wininet winks winscreencap
diff --git a/sys/acmmp3dec/Makefile.am b/sys/acmmp3dec/Makefile.am
new file mode 100644
index 00000000..664816d5
--- /dev/null
+++ b/sys/acmmp3dec/Makefile.am
@@ -0,0 +1,9 @@
+plugin_LTLIBRARIES = libgstacmmp3dec.la
+
+libgstacmdecsink_la_SOURCES = acmmp3dec.c
+libgstacmdecsink_la_CFLAGS = $(GST_CFLAGS) $(GST_BASE_CFLAGS) \
+ $(GST_PLUGINS_BASE_CFLAGS)
+libgstacmdecsink_la_LIBADD = $(GST_BASE_LIBS) $(GST_PLUGINS_BASE_LIBS) \
+ -lgstriff-$(GST_MAJORMINOR) -lmsacm32
+libgstacmdecsink_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) $(DIRECTSOUND_LDFLAGS)
+
diff --git a/sys/acmmp3dec/acmmp3dec.c b/sys/acmmp3dec/acmmp3dec.c
new file mode 100644
index 00000000..fb5d5ba5
--- /dev/null
+++ b/sys/acmmp3dec/acmmp3dec.c
@@ -0,0 +1,375 @@
+/* GStreamer
+ * Copyright (C) 2008 Pioneers of the Inevitable <songbird@songbirdnest.com>
+ *
+ * Authors: Michael Smith <msmith@songbirdnest.com>
+ *
+ * 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 <windows.h>
+#include <mmreg.h>
+#include <msacm.h>
+
+#include <gst/gst.h>
+#include <gst/riff/riff-media.h>
+
+#define ACM_BUFFER_SIZE (64 * 1024)
+
+#define GST_TYPE_ACM_MP3_DEC \
+ (acmmp3dec_get_type ())
+#define GST_ACM_MP3_DEC(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_ACM_MP3_DEC, ACMMP3Dec))
+#define GST_CAT_DEFAULT acmmp3dec_debug
+ GST_DEBUG_CATEGORY_STATIC (acmmp3dec_debug);
+ static const GstElementDetails acmmp3dec_details =
+ GST_ELEMENT_DETAILS ("ACM MP3 decoder", "Codec/Decoder/Audio",
+ "Decode MP3 using ACM decoder",
+ "Pioneers of the Inevitable <songbird@songbirdnest.com");
+ static GstStaticPadTemplate acmmp3dec_sink_template =
+ GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/x-raw-int, " "depth = (int)16, "
+ "width = (int)16, " "endianness = (int)" G_STRINGIFY (G_BYTE_ORDER)
+ ", " "signed = (boolean)TRUE, " "channels = (int) [1,2], "
+ "rate = (int)[1, MAX]") );
+ static GstStaticPadTemplate acmmp3dec_src_template =
+ GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
+ GST_STATIC_CAPS ("audio/mpeg, " "mpegversion = (int)1, "
+ "layer = (int)3, "
+ "rate = (int){ 8000, 11025, 12000, 16000, 22050, 24000, "
+ " 32000, 44100, 48000 }, " "channels = (int)[1,2], "
+ "parsed = (boolean) true") );
+ typedef struct _ACMMP3DecClass
+{
+ GstElementClass parent_class;
+ } ACMMP3DecClass;
+ typedef struct _ACMMP3Dec
+{
+ GstElement parent;
+ GstPad * sinkpad;
+ GstPad * srcpad;
+ gboolean is_setup;
+ WAVEFORMATEX infmt;
+ WAVEFORMATEX * outfmt;
+ HACMDRIVER driver;
+ HACMSTREAM stream;
+ ACMSTREAMHEADER header;
+
+ /* Offset into input buffer to write next data */
+ int offset;
+
+ /* Number of bytes written */
+ int bytes_output;
+
+ /* From received caps */
+ int rate;
+ int channels;
+
+ /* Set in properties */
+ int selected_bitrate;
+ GstCaps * output_caps;
+ } ACMMP3Dec;
+ GST_BOILERPLATE (ACMMP3Dec, acmmp3dec, GstElement, GST_TYPE_ELEMENT);
+ static GstCaps *
+acmmp3dec_caps_from_format (WAVEFORMATEX * fmt)
+{
+ return gst_riff_create_audio_caps (fmt->wFormatTag, NULL,
+ (gst_riff_strf_auds *) fmt, NULL, NULL, NULL);
+ }
+
+ gboolean acmmp3dec_set_input_format (ACMMP3Dec * dec)
+{
+ dec->infmt.wfx.wFormatTag = WAVE_FORMAT_MPEGLAYER3;
+ dec->infmt.wfx.nChannels = dec->channels;
+ dec->infmt.wfx.nSamplesPerSec = dec->rate;
+ dec->infmt.wfx.nAvgBytesPerSec = 0;
+ dec->infmt.wfx.nBlockAlign = 0;
+ dec->infmt.wfx.wBitsPerSample = 16;
+ dec->infmt.wfx.cbSize = MPEGLAYER3_WFX_EXTRA_BYTES;
+ dec->infmt.wID = MPEGLAYER3_ID_MPEG;
+ dec->infmt.fdwFlags = MPEGLAYER3_FLAG_PADDING_OFF; // ??
+ dec->infmt.nBlockSize = 0; // Damn, need to figure this out... Does this
+ // even make sense for vbr files? Various random
+ // things suggest 417 for no apparent reason?
+ // That's the right value for an unpadded
+ // 128 kbps 44.1kHz stream I think. Let's try
+ // zero to see if it works though. Or one?
+ dec->infmt.nFramesPerBlock = 1;
+ dec->infmt.nCodecDelay = 0; /* Apparently no way to know the correct
+ value to put here! Encoder-specific and not
+ stored in the bitstream. */
+ return TRUE;
+ }
+
+ gboolean acmmp3dec_set_output_format (ACMMP3Dec * dec,
+ WAVEFORMATEX * outfmt)
+{
+ dec->outfmt.wFormatTag = WAVE_FORMAT_PCM;
+ dec->outfmt.nChannels = dec->channels;
+ dec->outfmt.nSamplesPerSec = dec->rate;
+ dec->outfmt.nAvgBytesPerSec = 2 * dec->channels * dec->rate;
+ dec->outfmt.nBlockAlign = 4;
+ dec->outfmt.wBitsPerSample = 16;
+ dec->outfmt.cbSize = 0;
+ return TRUE;
+ }
+ static gboolean
+acmmp3dec_setup (ACMMP3Dec * dec)
+{
+ MMRESULT res;
+ int destBufferSize;
+ TODO:Get driverId
+ res = acmDriverOpen (&dec->driver, decclass->driverId, 0);
+ if (res) {
+ GST_WARNING ("Failed to open ACM driver: %d", res);
+ return FALSE;
+ }
+ acmmp3dec_set_input_format (dec, &dec->infmt);
+ acmmp3dec_set_output_format (dec, &dec->outfmt);
+ res =
+ acmStreamOpen (&dec->stream, dec->driver, &dec->infmt, dec->outfmt, 0, 0,
+ 0, ACM_STREAMOPENF_NONREALTIME);
+ if (res) {
+ GST_WARNING_OBJECT (dec, "Failed to open ACM stream");
+ return FALSE;
+ }
+ dec->header.cbStruct = sizeof (ACMSTREAMHEADER);
+ dec->header.fdwStatus = 0;
+ dec->header.dwUser = 0;
+ dec->header.pbSrc = (BYTE *) g_malloc (ACM_BUFFER_SIZE);
+ dec->header.cbSrcLength = ACM_BUFFER_SIZE;
+ dec->header.cbSrcLengthUsed = 0;
+ dec->header.dwSrcUser = 0;
+
+ /* Ask what buffer size we need to use for our output */
+ acmStreamSize (dec->stream, ACM_BUFFER_SIZE, &destBufferSize,
+ ACM_STREAMSIZEF_SOURCE);
+ dec->header.pbDst = (BYTE *) g_malloc (destBufferSize);
+ dec->header.cbDstLength = destBufferSize;
+ dec->header.cbDstLengthUsed = 0;
+ dec->header.dwDstUser = 0;
+ res = acmStreamPrepareHeader (dec->stream, &dec->header, 0);
+ if (res) {
+ GST_WARNING_OBJECT (dec, "Failed to prepare ACM stream: %x", res);
+ return FALSE;
+ }
+ dec->output_caps = acmmp3dec_caps_from_format (dec->outfmt);
+ if (dec->output_caps) {
+ gst_pad_set_caps (dec->srcpad, dec->output_caps);
+ }
+ dec->is_setup = TRUE;
+ return TRUE;
+ }
+ static void
+acmmp3dec_teardown (ACMMP3Dec * dec)
+{
+ if (dec->outfmt) {
+ g_free (dec->outfmt);
+ dec->outfmt = NULL;
+ }
+ if (dec->output_caps) {
+ gst_caps_unref (dec->output_caps);
+ dec->output_caps = NULL;
+ }
+ if (dec->header.pbSrc)
+ g_free (dec->header.pbSrc);
+ if (dec->header.pbDst)
+ g_free (dec->header.pbDst);
+ memset (&dec->header, 0, sizeof (dec->header));
+ if (dec->stream) {
+ acmStreamClose (dec->stream, 0);
+ dec->stream = 0;
+ }
+ if (dec->driver) {
+ acmDriverClose (dec->driver, 0);
+ dec->driver = 0;
+ }
+ dec->bytes_output = 0;
+ dec->offset = 0;
+ dec->is_setup = FALSE;
+ }
+ static gboolean
+acmmp3dec_sink_setcaps (GstPad * pad, GstCaps * caps)
+{
+ ACMMP3Dec * dec = (ACMMP3Dec *) GST_PAD_PARENT (pad);
+ GstStructure * structure;
+ gboolean ret;
+ structure = gst_caps_get_structure (caps, 0);
+ gst_structure_get_int (structure, "channels", &dec->channels);
+ gst_structure_get_int (structure, "rate", &dec->rate);
+ dec->bytes_per_sample = dec->channels * dec->rate * 2; /* 16 bit output */
+ if (dec->is_setup)
+ acmmp3dec_teardown (dec);
+ ret = acmmp3dec_setup (dec);
+ return ret;
+ }
+ static GstFlowReturn
+acmmp3dec_push_output (ACMMP3Dec * dec)
+{
+ GstFlowReturn ret = GST_FLOW_OK;
+ if (dec->header.cbDstLengthUsed > 0) {
+ GstBuffer * outbuf =
+ gst_buffer_new_and_alloc (dec->header.cbDstLengthUsed);
+ memcpy (GST_BUFFER_DATA (outbuf), dec->header.pbDst,
+ dec->header.cbDstLengthUsed);
+ GST_BUFFER_TIMESTAMP (outbuf) = dec->timestamp;
+ GST_BUFFER_DURATION (outbuf) =
+ gst_util_uint64_scale_int ( GST_BUFFER_SIZE (outbuf), GST_SECOND,
+ dec->bytes_per_sample);
+ dec->timestamp += GST_BUFFER_DURATION (outbuf);
+ GST_DEBUG_OBJECT (dec, "Pushing %d byte decoded buffer",
+ dec->header.cbDstLengthUsed);
+ ret = gst_pad_push (dec->srcpad, outbuf);
+ }
+ return ret;
+ }
+ static GstFlowReturn
+acmmp3dec_chain (GstPad * pad, GstBuffer * buf)
+{
+ MMRESULT res;
+ ACMMP3Dec * dec = (ACMMP3Dec *) GST_PAD_PARENT (pad);
+ guchar * data = GST_BUFFER_DATA (buf);
+ gint len = GST_BUFFER_SIZE (buf);
+ int chunklen;
+ GstFlowReturn ret = GST_FLOW_OK;
+ if (len > ACM_BUFFER_SIZE) {
+ GST_WARNING_OBJECT (dec, "Impossibly large mp3 frame!");
+ return GST_FLOW_ERROR;
+ }
+ if (GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) {
+ dec->timestamp = GST_BUFFER_TIMESTAMP (buf);
+ }
+ memcpy (dec->header.pbSrc, data, len);
+ dec->header.cbSrcLength = len;
+
+ /* Now we have a buffer ready to go */
+ res =
+ acmStreamConvert (dec->stream, &dec->header,
+ ACM_STREAMCONVERTF_BLOCKALIGN);
+ if (res) {
+ GST_WARNING_OBJECT (dec, "Failed to decode data");
+ return GST_FLOW_OK; /* Maybe it was just a corrupt frame */
+ }
+ if (dec->header.cbSrcLengthUsed > 0)
+ {
+ if (dec->header.cbSrcLengthUsed != dec->header.cbSrcLength) {
+ GST_WARNING_OBJECT (dec, "ACM decoder didn't consume all data!");
+
+ /* We could handle this, but it shouldn't be possible, so don't try
+ * for now */
+ return GST_FLOW_ERROR;
+ }
+
+ /* Write out any data produced */
+ acmmp3dec_push_output (dec);
+ }
+ return ret;
+ }
+
+ GstFlowReturn acmmp3dec_finish_stream (ACMMP3Dec * dec)
+{
+ MMRESULT res;
+ GstFlowReturn ret = GST_FLOW_OK;
+ int len;
+ dec->header.cbSrcLength = 0;
+
+ /* Flush out any remaining data internal to the decoder */
+ res =
+ acmStreamConvert (dec->stream, &dec->header,
+ ACM_STREAMCONVERTF_BLOCKALIGN | ACM_STREAMCONVERTF_END);
+ if (res) {
+ GST_WARNING_OBJECT (dec, "Failed to decode data");
+ return ret;
+ }
+ ret = acmmp3dec_push_output (dec);
+ return ret;
+ }
+ static gboolean
+acmmp3dec_sink_event (GstPad * pad, GstEvent * event)
+{
+ ACMMP3Dec * dec = (ACMMP3Dec *) GST_PAD_PARENT (pad);
+ gboolean res;
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_EOS:
+ acmmp3dec_finish_stream (dec);
+ res = gst_pad_push_event (dec->srcpad, event);
+ break;
+ case GST_EVENT_FLUSH_STOP:
+ breal;
+ default:
+ res = gst_pad_push_event (dec->srcpad, event);
+ break;
+ }
+ return res;
+ }
+ static void
+acmmp3dec_dispose (GObject * obj)
+{
+ ACMMP3Dec * dec = (ACMMP3Dec *) obj;
+ G_OBJECT_CLASS (parent_class)->dispose (obj);
+ } static void
+
+acmmp3dec_init (ACMMP3Dec * dec)
+{
+ dec->sinkpad =
+ gst_pad_new_from_static_template (&acmmp3dec_sink_template, "sink");
+ gst_pad_set_setcaps_function (dec->sinkpad,
+ GST_DEBUG_FUNCPTR (acmmp3dec_sink_setcaps));
+ gst_pad_set_chain_function (dec->sinkpad,
+ GST_DEBUG_FUNCPTR (acmmp3dec_chain));
+ gst_pad_set_event_function (dec->sinkpad,
+ GST_DEBUG_FUNCPTR (acmmp3dec_sink_event));
+ gst_element_add_pad (GST_ELEMENT (dec), dec->sinkpad);
+ dec->srcpad =
+ gst_pad_new_from_static_template (&acmmp3dec_src_template, "src");
+ gst_element_add_pad (GST_ELEMENT (dec), dec->srcpad);
+ } static void
+
+acmmp3dec_class_init (ACMMP3DecClass * klass)
+{
+ GObjectClass * gobjectclass = (GObjectClass *) klass;
+ gobjectclass->dispose = acmmp3dec_dispose;
+ } static void
+
+acmmp3dec_base_init (ACMMP3DecClass * klass)
+{
+ GstElementClass * element_class = GST_ELEMENT_CLASS (klass);
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&acmmp3dec_sink_template));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&acmmp3dec_src_template));
+ gst_element_class_set_details (element_class, &acmmp3dec_details);
+ } static gboolean
+
+plugin_init (GstPlugin * plugin)
+{
+ GST_DEBUG_CATEGORY_INIT (acmmp3dec_debug, "acmmp3dec", 0, "ACM Decoders");
+ GST_INFO ("Registering ACM MP3 decoder");
+ if (!gst_element_register (plugin, "acmmp3dec", GST_RANK_PRIMARY,
+ GST_TYPE_ACM_MP3_DEC)) {
+ return FALSE;
+ }
+ return TRUE;
+ }
+
+ GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR, "acmmp3dec",
+ "ACM MP3 Decoder", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME,
+ GST_PACKAGE_ORIGIN_ '
+
+