gstreamer/ext/a52dec/gsta52dec.c

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/* GStreamer
* Copyright (C) <2001> David I. Lehn <dlehn@users.sourceforge.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 <stdlib.h>
#include "_stdint.h"
#include <gst/gst.h>
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#include <gst/audio/multichannel.h>
#include <a52dec/a52.h>
#include <a52dec/mm_accel.h>
#include "gsta52dec.h"
#include <liboil/liboil.h>
#include <liboil/liboilcpu.h>
#include <liboil/liboilfunction.h>
/* elementfactory information */
static GstElementDetails gst_a52dec_details = {
"ATSC A/52 audio decoder",
"Codec/Decoder/Audio",
"Decodes ATSC A/52 encoded audio streams",
"David I. Lehn <dlehn@users.sourceforge.net>",
};
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#ifdef LIBA52_DOUBLE
#define SAMPLE_WIDTH 64
#else
#define SAMPLE_WIDTH 32
#endif
GST_DEBUG_CATEGORY_STATIC (a52dec_debug);
#define GST_CAT_DEFAULT (a52dec_debug)
/* A52Dec args */
enum
{
ARG_0,
ARG_DRC,
ARG_MODE,
ARG_LFE,
};
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-ac3; audio/ac3; audio/x-private1-ac3")
);
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("audio/x-raw-float, "
"endianness = (int) " G_STRINGIFY (G_BYTE_ORDER) ", "
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"width = (int) " G_STRINGIFY (SAMPLE_WIDTH) ", "
"rate = (int) [ 4000, 96000 ], " "channels = (int) [ 1, 6 ]")
);
static void gst_a52dec_base_init (GstA52DecClass * klass);
static void gst_a52dec_class_init (GstA52DecClass * klass);
static void gst_a52dec_init (GstA52Dec * a52dec);
static GstFlowReturn gst_a52dec_chain (GstPad * pad, GstBuffer * buffer);
static GstFlowReturn gst_a52dec_chain_raw (GstPad * pad, GstBuffer * buf);
static gboolean gst_a52dec_sink_setcaps (GstPad * pad, GstCaps * caps);
static gboolean gst_a52dec_sink_event (GstPad * pad, GstEvent * event);
static GstStateChangeReturn gst_a52dec_change_state (GstElement * element,
GstStateChange transition);
static void gst_a52dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_a52dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstElementClass *parent_class = NULL;
#define GST_TYPE_A52DEC_MODE (gst_a52dec_mode_get_type())
static GType
gst_a52dec_mode_get_type (void)
{
static GType a52dec_mode_type = 0;
static const GEnumValue a52dec_modes[] = {
{A52_MONO, "Mono", "mono"},
{A52_STEREO, "Stereo", "stereo"},
{A52_3F, "3 Front", "3f"},
{A52_2F1R, "2 Front, 1 Rear", "2f1r"},
{A52_3F1R, "3 Front, 1 Rear", "3f1r"},
{A52_2F2R, "2 Front, 2 Rear", "2f2r"},
{A52_3F2R, "3 Front, 2 Rear", "3f2r"},
{A52_DOLBY, "Dolby", "dolby"},
{0, NULL, NULL},
};
if (!a52dec_mode_type) {
a52dec_mode_type = g_enum_register_static ("GstA52DecMode", a52dec_modes);
}
return a52dec_mode_type;
}
GType
gst_a52dec_get_type (void)
{
static GType a52dec_type = 0;
if (!a52dec_type) {
static const GTypeInfo a52dec_info = {
sizeof (GstA52DecClass),
(GBaseInitFunc) gst_a52dec_base_init,
NULL,
(GClassInitFunc) gst_a52dec_class_init,
NULL,
NULL,
sizeof (GstA52Dec),
0,
(GInstanceInitFunc) gst_a52dec_init,
};
a52dec_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstA52Dec", &a52dec_info, 0);
}
return a52dec_type;
}
static void
gst_a52dec_base_init (GstA52DecClass * klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_factory));
gst_element_class_set_details (element_class, &gst_a52dec_details);
GST_DEBUG_CATEGORY_INIT (a52dec_debug, "a52dec", 0,
"AC3/A52 software decoder");
}
static void
gst_a52dec_class_init (GstA52DecClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
guint cpuflags;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_peek_parent (klass);
gobject_class->set_property = gst_a52dec_set_property;
gobject_class->get_property = gst_a52dec_get_property;
gstelement_class->change_state = GST_DEBUG_FUNCPTR (gst_a52dec_change_state);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DRC,
g_param_spec_boolean ("drc", "Dynamic Range Compression",
"Use Dynamic Range Compression", FALSE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MODE,
g_param_spec_enum ("mode", "Decoder Mode", "Decoding Mode (default 3f2r)",
GST_TYPE_A52DEC_MODE, A52_3F2R, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_LFE,
g_param_spec_boolean ("lfe", "LFE", "LFE", TRUE, G_PARAM_READWRITE));
oil_init ();
klass->a52_cpuflags = 0;
cpuflags = oil_cpu_get_flags ();
if (cpuflags & OIL_IMPL_FLAG_MMX)
klass->a52_cpuflags |= MM_ACCEL_X86_MMX;
if (cpuflags & OIL_IMPL_FLAG_3DNOW)
klass->a52_cpuflags |= MM_ACCEL_X86_3DNOW;
if (cpuflags & OIL_IMPL_FLAG_MMXEXT)
klass->a52_cpuflags |= MM_ACCEL_X86_MMXEXT;
GST_LOG ("CPU flags: a52=%08x, liboil=%08x", klass->a52_cpuflags, cpuflags);
}
static void
gst_a52dec_init (GstA52Dec * a52dec)
{
GstElementClass *klass = GST_ELEMENT_GET_CLASS (a52dec);
/* create the sink and src pads */
a52dec->sinkpad =
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
"sink"), "sink");
gst_pad_set_setcaps_function (a52dec->sinkpad,
GST_DEBUG_FUNCPTR (gst_a52dec_sink_setcaps));
gst_pad_set_chain_function (a52dec->sinkpad,
GST_DEBUG_FUNCPTR (gst_a52dec_chain));
gst_pad_set_event_function (a52dec->sinkpad,
GST_DEBUG_FUNCPTR (gst_a52dec_sink_event));
gst_element_add_pad (GST_ELEMENT (a52dec), a52dec->sinkpad);
a52dec->srcpad =
gst_pad_new_from_template (gst_element_class_get_pad_template (klass,
"src"), "src");
gst_pad_use_fixed_caps (a52dec->srcpad);
gst_element_add_pad (GST_ELEMENT (a52dec), a52dec->srcpad);
a52dec->request_channels = A52_CHANNEL;
a52dec->dynamic_range_compression = FALSE;
a52dec->cache = NULL;
}
static int
gst_a52dec_channels (int flags, GstAudioChannelPosition ** _pos)
{
int chans = 0;
GstAudioChannelPosition *pos = NULL;
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/* allocated just for safety. Number makes no sense */
if (_pos) {
pos = g_new (GstAudioChannelPosition, 6);
*_pos = pos;
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}
if (flags & A52_LFE) {
chans += 1;
if (pos) {
pos[0] = GST_AUDIO_CHANNEL_POSITION_LFE;
}
}
flags &= A52_CHANNEL_MASK;
switch (flags) {
case A52_3F2R:
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if (pos) {
pos[0 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
pos[2 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
pos[3 + chans] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
pos[4 + chans] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
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}
chans += 5;
break;
case A52_2F2R:
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if (pos) {
pos[0 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
pos[2 + chans] = GST_AUDIO_CHANNEL_POSITION_REAR_LEFT;
pos[3 + chans] = GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT;
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}
chans += 4;
break;
case A52_3F1R:
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if (pos) {
pos[0 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
pos[2 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
pos[3 + chans] = GST_AUDIO_CHANNEL_POSITION_REAR_CENTER;
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}
chans += 4;
break;
case A52_2F1R:
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if (pos) {
pos[0 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
pos[2 + chans] = GST_AUDIO_CHANNEL_POSITION_REAR_CENTER;
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}
chans += 3;
break;
case A52_3F:
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if (pos) {
pos[0 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER;
pos[2 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
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}
chans += 3;
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break;
case A52_CHANNEL: /* Dual mono. Should really be handled as 2 src pads */
case A52_STEREO:
case A52_DOLBY:
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if (pos) {
pos[0 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT;
pos[1 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT;
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}
chans += 2;
break;
case A52_MONO:
if (pos) {
pos[0 + chans] = GST_AUDIO_CHANNEL_POSITION_FRONT_MONO;
}
chans += 1;
break;
default:
/* error, caller should post error message */
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g_free (pos);
return 0;
}
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return chans;
}
static GstFlowReturn
examples/gstplay/player.c: Don't iterate. Original commit message from CVS: * examples/gstplay/player.c: (main): Don't iterate. * examples/seeking/seek.c: (fixate), (make_playerbin_pipeline): Add visualizations. * ext/a52dec/gsta52dec.c: (gst_a52dec_push), (gst_a52dec_handle_frame): Set duration. * ext/dvdnav/gst-dvd: Add audioconvert. Fixes #161325. * ext/dvdread/dvdreadsrc.c: (dvdreadsrc_get): Explicitely case to gint64. Possible valgrind error. * gst-libs/gst/play/play.c: (caps_set), (setup_size), (gst_play_tick_callback), (gst_play_change_state), (gst_play_dispose), (gst_play_init), (gst_play_class_init), (gst_play_set_location), (gst_play_get_location), (gst_play_seek_to_time), (gst_play_set_data_src), (gst_play_set_video_sink), (gst_play_set_audio_sink), (gst_play_set_visualization), (gst_play_connect_visualization), (gst_play_get_framerate), (gst_play_get_all_by_interface), (gst_play_new): Use playbin. Fixes #139749 and #147744. * gst/apetag/apedemux.c: (gst_ape_demux_parse_tags): Add genre tag. * gst/audioscale/gstaudioscale.c: (gst_audioscale_method_get_type), (audioscale_get_type), (gst_audioscale_base_init), (gst_audioscale_class_init), (gst_audioscale_expand_caps), (gst_audioscale_getcaps), (gst_audioscale_fixate), (gst_audioscale_link), (gst_audioscale_get_buffer), (gst_audioscale_decrease_rate), (gst_audioscale_increase_rate), (gst_audioscale_init), (gst_audioscale_dispose), (gst_audioscale_chain), (gst_audioscale_set_property), (gst_audioscale_get_property), (plugin_init): Indent properly. * gst/mpegstream/gstdvddemux.c: (gst_dvd_demux_process_private): Fix LPCM. * gst/qtdemux/qtdemux.c: (qtdemux_parse_udta), (qtdemux_tag_add_str), (qtdemux_tag_add_num), (qtdemux_tag_add_gnre), (qtdemux_video_caps): Add more metadata (fixes #162656).
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gst_a52dec_push (GstA52Dec * a52dec,
GstPad * srcpad, int flags, sample_t * samples, GstClockTime timestamp)
{
GstBuffer *buf;
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int chans, n, c;
GstFlowReturn result;
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flags &= (A52_CHANNEL_MASK | A52_LFE);
chans = gst_a52dec_channels (flags, NULL);
if (!chans) {
GST_ELEMENT_ERROR (GST_ELEMENT (a52dec), STREAM, DECODE, (NULL),
("invalid channel flags: %d", flags));
return GST_FLOW_ERROR;
}
result =
gst_pad_alloc_buffer_and_set_caps (srcpad, 0,
256 * chans * (SAMPLE_WIDTH / 8), GST_PAD_CAPS (srcpad), &buf);
if (result != GST_FLOW_OK)
return result;
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for (n = 0; n < 256; n++) {
for (c = 0; c < chans; c++) {
((sample_t *) GST_BUFFER_DATA (buf))[n * chans + c] =
samples[c * 256 + n];
}
}
GST_BUFFER_TIMESTAMP (buf) = timestamp;
examples/gstplay/player.c: Don't iterate. Original commit message from CVS: * examples/gstplay/player.c: (main): Don't iterate. * examples/seeking/seek.c: (fixate), (make_playerbin_pipeline): Add visualizations. * ext/a52dec/gsta52dec.c: (gst_a52dec_push), (gst_a52dec_handle_frame): Set duration. * ext/dvdnav/gst-dvd: Add audioconvert. Fixes #161325. * ext/dvdread/dvdreadsrc.c: (dvdreadsrc_get): Explicitely case to gint64. Possible valgrind error. * gst-libs/gst/play/play.c: (caps_set), (setup_size), (gst_play_tick_callback), (gst_play_change_state), (gst_play_dispose), (gst_play_init), (gst_play_class_init), (gst_play_set_location), (gst_play_get_location), (gst_play_seek_to_time), (gst_play_set_data_src), (gst_play_set_video_sink), (gst_play_set_audio_sink), (gst_play_set_visualization), (gst_play_connect_visualization), (gst_play_get_framerate), (gst_play_get_all_by_interface), (gst_play_new): Use playbin. Fixes #139749 and #147744. * gst/apetag/apedemux.c: (gst_ape_demux_parse_tags): Add genre tag. * gst/audioscale/gstaudioscale.c: (gst_audioscale_method_get_type), (audioscale_get_type), (gst_audioscale_base_init), (gst_audioscale_class_init), (gst_audioscale_expand_caps), (gst_audioscale_getcaps), (gst_audioscale_fixate), (gst_audioscale_link), (gst_audioscale_get_buffer), (gst_audioscale_decrease_rate), (gst_audioscale_increase_rate), (gst_audioscale_init), (gst_audioscale_dispose), (gst_audioscale_chain), (gst_audioscale_set_property), (gst_audioscale_get_property), (plugin_init): Indent properly. * gst/mpegstream/gstdvddemux.c: (gst_dvd_demux_process_private): Fix LPCM. * gst/qtdemux/qtdemux.c: (qtdemux_parse_udta), (qtdemux_tag_add_str), (qtdemux_tag_add_num), (qtdemux_tag_add_gnre), (qtdemux_video_caps): Add more metadata (fixes #162656).
2005-01-05 14:56:27 +00:00
GST_BUFFER_DURATION (buf) = 256 * GST_SECOND / a52dec->sample_rate;
ext/a52dec/gsta52dec.c: Add some debug output. Check that a discont has a valid time associated. Original commit message from CVS: * ext/a52dec/gsta52dec.c: (gst_a52dec_push), (gst_a52dec_handle_event), (gst_a52dec_chain): Add some debug output. Check that a discont has a valid time associated. * ext/alsa/gstalsasink.c: (gst_alsa_sink_check_event), (gst_alsa_sink_loop): Ignore TAG events. A little extra debug for broken timestamps. * ext/dvdnav/dvdnavsrc.c: (dvdnavsrc_init), (dvdnavsrc_loop), (dvdnavsrc_change_state): Ensure we send a discont to engage the link before we send any other events. * ext/dvdread/dvdreadsrc.c: (dvdreadsrc_init), (dvdreadsrc_finalize), (_close), (_open), (_seek_title), (_seek_chapter), (seek_sector), (dvdreadsrc_get), (dvdreadsrc_uri_get_uri), (dvdreadsrc_uri_set_uri): Handle URI of the form dvd://title[,chapter[,angle]]. Currently only dvd://title works in totem because typefinding sends a seek that ends up going back to chapter 1 regardless. * ext/mpeg2dec/gstmpeg2dec.c: * ext/mpeg2dec/gstmpeg2dec.h: Output correct timestamps and handle disconts. * ext/ogg/gstoggdemux.c: (get_relative): Small guard against a null dereference. * ext/pango/gsttextoverlay.c: (gst_textoverlay_finalize), (gst_textoverlay_set_property): Free memory when done. Don't call gst_event_filler_get_duration on EOS events. Use GST_LOG and GST_WARNING instead of g_message and g_warning. * ext/smoothwave/gstsmoothwave.c: (gst_smoothwave_init), (draw_line), (gst_smoothwave_dispose), (gst_sw_sinklink), (gst_sw_srclink), (gst_smoothwave_chain): Draw solid lines, prettier colours. * gst/mpeg2sub/gstmpeg2subt.c: (gst_mpeg2subt_init): Add a default palette that'll work for some movies. * gst/mpegstream/gstdvddemux.c: (gst_dvd_demux_init), (gst_dvd_demux_handle_dvd_event), (gst_dvd_demux_send_discont), (gst_dvd_demux_send_subbuffer), (gst_dvd_demux_reset): * gst/mpegstream/gstdvddemux.h: * gst/mpegstream/gstmpegdemux.c: (gst_mpeg_demux_send_discont), (gst_mpeg_demux_parse_syshead), (gst_mpeg_demux_parse_pes): * gst/mpegstream/gstmpegparse.c: (gst_mpeg_parse_init), (gst_mpeg_parse_handle_discont), (gst_mpeg_parse_parse_packhead): * gst/mpegstream/gstmpegparse.h: Use PTM/NAV events when for timestamp adjustment when connected to dvdnavsrc. Don't use many discont events where one suffices. * gst/playback/gstplaybasebin.c: (group_destroy), (gen_preroll_element), (gst_play_base_bin_add_element): * gst/playback/gstplaybasebin.h: Make sure we remove subtitles from the same bin we put them in. * gst/subparse/gstsubparse.c: (convert_encoding), (parse_subrip), (gst_subparse_buffer_format_autodetect), (gst_subparse_change_state): Fix some memleaks and invalid accesses. * gst/typefind/gsttypefindfunctions.c: (ogganx_type_find), (oggskel_type_find), (cmml_type_find), (plugin_init): Some typefind functions for Annodex v3.0 files * gst/wavparse/gstwavparse.h: GstRiffReadClass is the correct parent class.
2005-01-25 15:34:08 +00:00
GST_DEBUG_OBJECT (a52dec,
"Pushing buffer with ts %" GST_TIME_FORMAT " duration %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
return gst_pad_push (srcpad, buf);
}
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static gboolean
gst_a52dec_reneg (GstA52Dec * a52dec, GstPad * pad)
{
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GstAudioChannelPosition *pos;
gint channels = gst_a52dec_channels (a52dec->using_channels, &pos);
GstCaps *caps = NULL;
gboolean result = FALSE;
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if (!channels)
goto done;
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GST_INFO_OBJECT (a52dec, "reneg channels:%d rate:%d",
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channels, a52dec->sample_rate);
caps = gst_caps_new_simple ("audio/x-raw-float",
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"width", G_TYPE_INT, SAMPLE_WIDTH,
"channels", G_TYPE_INT, channels,
"rate", G_TYPE_INT, a52dec->sample_rate, NULL);
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gst_audio_set_channel_positions (gst_caps_get_structure (caps, 0), pos);
g_free (pos);
if (!gst_pad_set_caps (pad, caps))
goto done;
result = TRUE;
done:
if (caps)
gst_caps_unref (caps);
return result;
}
static gboolean
gst_a52dec_sink_event (GstPad * pad, GstEvent * event)
{
GstA52Dec *a52dec = GST_A52DEC (gst_pad_get_parent (pad));
gboolean ret = FALSE;
GST_LOG ("Handling %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT:{
GstFormat format;
gint64 val;
gst_event_parse_new_segment (event, NULL, NULL, &format, &val, NULL,
NULL);
if (format != GST_FORMAT_TIME || !GST_CLOCK_TIME_IS_VALID (val)) {
GST_WARNING ("No time in newsegment event %p", event);
gst_event_unref (event);
a52dec->sent_segment = FALSE;
} else {
a52dec->time = val;
a52dec->sent_segment = TRUE;
ret = gst_pad_event_default (pad, event);
}
if (a52dec->cache) {
gst_buffer_unref (a52dec->cache);
a52dec->cache = NULL;
}
break;
}
case GST_EVENT_TAG:
case GST_EVENT_EOS:{
ret = gst_pad_event_default (pad, event);
break;
}
case GST_EVENT_FLUSH_START:
ret = gst_pad_event_default (pad, event);
break;
case GST_EVENT_FLUSH_STOP:
if (a52dec->cache) {
gst_buffer_unref (a52dec->cache);
a52dec->cache = NULL;
}
ret = gst_pad_event_default (pad, event);
break;
default:
ret = gst_pad_event_default (pad, event);
break;
}
gst_object_unref (a52dec);
return ret;
}
static void
gst_a52dec_update_streaminfo (GstA52Dec * a52dec)
{
GstTagList *taglist;
taglist = gst_tag_list_new ();
gst_tag_list_add (taglist, GST_TAG_MERGE_APPEND,
GST_TAG_BITRATE, (guint) a52dec->bit_rate, NULL);
gst_element_found_tags_for_pad (GST_ELEMENT (a52dec),
GST_PAD (a52dec->srcpad), taglist);
}
static GstFlowReturn
gst_a52dec_handle_frame (GstA52Dec * a52dec, guint8 * data,
guint length, gint flags, gint sample_rate, gint bit_rate)
{
gint channels, i;
gboolean need_reneg = FALSE;
/* update stream information, renegotiate or re-streaminfo if needed */
need_reneg = FALSE;
if (a52dec->sample_rate != sample_rate) {
need_reneg = TRUE;
a52dec->sample_rate = sample_rate;
}
if (flags) {
a52dec->stream_channels = flags & (A52_CHANNEL_MASK | A52_LFE);
}
if (bit_rate != a52dec->bit_rate) {
a52dec->bit_rate = bit_rate;
gst_a52dec_update_streaminfo (a52dec);
}
/* If we haven't had an explicit number of channels chosen through properties
* at this point, choose what to downmix to now, based on what the peer will
* accept - this allows a52dec to do downmixing in preference to a
* downstream element such as audioconvert.
*/
if (a52dec->request_channels == A52_CHANNEL) {
GstCaps *caps;
caps = gst_pad_get_allowed_caps (a52dec->srcpad);
if (caps && gst_caps_get_size (caps) > 0) {
GstCaps *copy = gst_caps_copy_nth (caps, 0);
GstStructure *structure = gst_caps_get_structure (copy, 0);
gint channels;
const int a52_channels[6] = {
A52_MONO,
A52_STEREO,
A52_STEREO | A52_LFE,
A52_2F2R,
A52_2F2R | A52_LFE,
A52_3F2R | A52_LFE,
};
/* Prefer the original number of channels, but fixate to something
* preferred (first in the caps) downstream if possible.
*/
gst_structure_fixate_field_nearest_int (structure, "channels",
flags ? gst_a52dec_channels (flags, NULL) : 6);
gst_structure_get_int (structure, "channels", &channels);
if (channels <= 6)
a52dec->request_channels = a52_channels[channels - 1];
else
a52dec->request_channels = a52_channels[5];
gst_caps_unref (copy);
} else if (flags)
a52dec->request_channels = a52dec->stream_channels;
else
a52dec->request_channels = A52_3F2R | A52_LFE;
if (caps)
gst_caps_unref (caps);
}
/* process */
flags = a52dec->request_channels; /* | A52_ADJUST_LEVEL; */
a52dec->level = 1;
if (a52_frame (a52dec->state, data, &flags, &a52dec->level, a52dec->bias)) {
GST_WARNING ("a52_frame error");
return GST_FLOW_OK;
}
channels = flags & (A52_CHANNEL_MASK | A52_LFE);
if (a52dec->using_channels != channels) {
need_reneg = TRUE;
a52dec->using_channels = channels;
}
/* negotiate if required */
if (need_reneg == TRUE) {
GST_DEBUG ("a52dec reneg: sample_rate:%d stream_chans:%d using_chans:%d",
a52dec->sample_rate, a52dec->stream_channels, a52dec->using_channels);
if (!gst_a52dec_reneg (a52dec, a52dec->srcpad)) {
GST_ELEMENT_ERROR (a52dec, CORE, NEGOTIATION, (NULL), (NULL));
return GST_FLOW_ERROR;
}
}
if (a52dec->dynamic_range_compression == FALSE) {
a52_dynrng (a52dec->state, NULL, NULL);
}
/* each frame consists of 6 blocks */
for (i = 0; i < 6; i++) {
if (a52_block (a52dec->state)) {
GST_WARNING ("a52_block error %d", i);
} else {
GstFlowReturn ret;
/* push on */
ret = gst_a52dec_push (a52dec, a52dec->srcpad, a52dec->using_channels,
a52dec->samples, a52dec->time);
if (ret != GST_FLOW_OK)
return ret;
}
a52dec->time += 256 * GST_SECOND / a52dec->sample_rate;
}
return GST_FLOW_OK;
}
static gboolean
gst_a52dec_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstA52Dec *a52dec = GST_A52DEC (gst_pad_get_parent (pad));
GstStructure *structure;
structure = gst_caps_get_structure (caps, 0);
if (structure && gst_structure_has_name (structure, "audio/x-private1-ac3"))
a52dec->dvdmode = TRUE;
else
a52dec->dvdmode = FALSE;
gst_object_unref (a52dec);
return TRUE;
}
static GstFlowReturn
gst_a52dec_chain (GstPad * pad, GstBuffer * buf)
{
GstA52Dec *a52dec = GST_A52DEC (GST_PAD_PARENT (pad));
GstFlowReturn ret;
gint first_access;
if (a52dec->dvdmode) {
gint size = GST_BUFFER_SIZE (buf);
guchar *data = GST_BUFFER_DATA (buf);
gint offset;
gint len;
GstBuffer *subbuf;
if (size < 2)
goto not_enough_data;
first_access = (data[0] << 8) | data[1];
/* Skip the first_access header */
offset = 2;
if (first_access > 1) {
/* Length of data before first_access */
len = first_access - 1;
if (len <= 0 || offset + len > size)
goto bad_first_access_parameter;
subbuf = gst_buffer_create_sub (buf, offset, len);
GST_BUFFER_TIMESTAMP (subbuf) = GST_CLOCK_TIME_NONE;
ret = gst_a52dec_chain_raw (pad, subbuf);
if (ret != GST_FLOW_OK)
goto done;
offset += len;
len = size - offset;
if (len > 0) {
subbuf = gst_buffer_create_sub (buf, offset, len);
GST_BUFFER_TIMESTAMP (subbuf) = GST_BUFFER_TIMESTAMP (buf);
ret = gst_a52dec_chain_raw (pad, subbuf);
}
} else {
/* first_access = 0 or 1, so if there's a timestamp it applies to the first byte */
subbuf = gst_buffer_create_sub (buf, offset, size - offset);
GST_BUFFER_TIMESTAMP (subbuf) = GST_BUFFER_TIMESTAMP (buf);
ret = gst_a52dec_chain_raw (pad, subbuf);
}
} else {
ret = gst_a52dec_chain_raw (pad, buf);
}
done:
return ret;
/* ERRORS */
not_enough_data:
{
GST_ELEMENT_ERROR (GST_ELEMENT (a52dec), STREAM, DECODE, (NULL),
("Insufficient data in buffer. Can't determine first_acess"));
return GST_FLOW_ERROR;
}
bad_first_access_parameter:
{
GST_ELEMENT_ERROR (GST_ELEMENT (a52dec), STREAM, DECODE, (NULL),
("Bad first_access parameter (%d) in buffer", first_access));
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
gst_a52dec_chain_raw (GstPad * pad, GstBuffer * buf)
{
GstA52Dec *a52dec = GST_A52DEC (gst_pad_get_parent (pad));
guint8 *data;
guint size;
gint length = 0, flags, sample_rate, bit_rate;
GstFlowReturn result = GST_FLOW_OK;
if (!a52dec->sent_segment) {
GstSegment segment;
/* Create a basic segment. Usually, we'll get a new-segment sent by
* another element that will know more information (a demuxer). If we're
* just looking at a raw AC3 stream, we won't - so we need to send one
* here, but we don't know much info, so just send a minimal TIME
* new-segment event
*/
gst_segment_init (&segment, GST_FORMAT_TIME);
gst_pad_push_event (a52dec->srcpad, gst_event_new_new_segment (FALSE,
segment.rate, segment.format, segment.start,
segment.duration, segment.start));
a52dec->sent_segment = TRUE;
}
/* merge with cache, if any. Also make sure timestamps match */
if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
a52dec->time = GST_BUFFER_TIMESTAMP (buf);
ext/a52dec/gsta52dec.c: Add some debug output. Check that a discont has a valid time associated. Original commit message from CVS: * ext/a52dec/gsta52dec.c: (gst_a52dec_push), (gst_a52dec_handle_event), (gst_a52dec_chain): Add some debug output. Check that a discont has a valid time associated. * ext/alsa/gstalsasink.c: (gst_alsa_sink_check_event), (gst_alsa_sink_loop): Ignore TAG events. A little extra debug for broken timestamps. * ext/dvdnav/dvdnavsrc.c: (dvdnavsrc_init), (dvdnavsrc_loop), (dvdnavsrc_change_state): Ensure we send a discont to engage the link before we send any other events. * ext/dvdread/dvdreadsrc.c: (dvdreadsrc_init), (dvdreadsrc_finalize), (_close), (_open), (_seek_title), (_seek_chapter), (seek_sector), (dvdreadsrc_get), (dvdreadsrc_uri_get_uri), (dvdreadsrc_uri_set_uri): Handle URI of the form dvd://title[,chapter[,angle]]. Currently only dvd://title works in totem because typefinding sends a seek that ends up going back to chapter 1 regardless. * ext/mpeg2dec/gstmpeg2dec.c: * ext/mpeg2dec/gstmpeg2dec.h: Output correct timestamps and handle disconts. * ext/ogg/gstoggdemux.c: (get_relative): Small guard against a null dereference. * ext/pango/gsttextoverlay.c: (gst_textoverlay_finalize), (gst_textoverlay_set_property): Free memory when done. Don't call gst_event_filler_get_duration on EOS events. Use GST_LOG and GST_WARNING instead of g_message and g_warning. * ext/smoothwave/gstsmoothwave.c: (gst_smoothwave_init), (draw_line), (gst_smoothwave_dispose), (gst_sw_sinklink), (gst_sw_srclink), (gst_smoothwave_chain): Draw solid lines, prettier colours. * gst/mpeg2sub/gstmpeg2subt.c: (gst_mpeg2subt_init): Add a default palette that'll work for some movies. * gst/mpegstream/gstdvddemux.c: (gst_dvd_demux_init), (gst_dvd_demux_handle_dvd_event), (gst_dvd_demux_send_discont), (gst_dvd_demux_send_subbuffer), (gst_dvd_demux_reset): * gst/mpegstream/gstdvddemux.h: * gst/mpegstream/gstmpegdemux.c: (gst_mpeg_demux_send_discont), (gst_mpeg_demux_parse_syshead), (gst_mpeg_demux_parse_pes): * gst/mpegstream/gstmpegparse.c: (gst_mpeg_parse_init), (gst_mpeg_parse_handle_discont), (gst_mpeg_parse_parse_packhead): * gst/mpegstream/gstmpegparse.h: Use PTM/NAV events when for timestamp adjustment when connected to dvdnavsrc. Don't use many discont events where one suffices. * gst/playback/gstplaybasebin.c: (group_destroy), (gen_preroll_element), (gst_play_base_bin_add_element): * gst/playback/gstplaybasebin.h: Make sure we remove subtitles from the same bin we put them in. * gst/subparse/gstsubparse.c: (convert_encoding), (parse_subrip), (gst_subparse_buffer_format_autodetect), (gst_subparse_change_state): Fix some memleaks and invalid accesses. * gst/typefind/gsttypefindfunctions.c: (ogganx_type_find), (oggskel_type_find), (cmml_type_find), (plugin_init): Some typefind functions for Annodex v3.0 files * gst/wavparse/gstwavparse.h: GstRiffReadClass is the correct parent class.
2005-01-25 15:34:08 +00:00
GST_DEBUG_OBJECT (a52dec,
"Received buffer with ts %" GST_TIME_FORMAT " duration %"
GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
}
ext/a52dec/gsta52dec.c: Add some debug output. Check that a discont has a valid time associated. Original commit message from CVS: * ext/a52dec/gsta52dec.c: (gst_a52dec_push), (gst_a52dec_handle_event), (gst_a52dec_chain): Add some debug output. Check that a discont has a valid time associated. * ext/alsa/gstalsasink.c: (gst_alsa_sink_check_event), (gst_alsa_sink_loop): Ignore TAG events. A little extra debug for broken timestamps. * ext/dvdnav/dvdnavsrc.c: (dvdnavsrc_init), (dvdnavsrc_loop), (dvdnavsrc_change_state): Ensure we send a discont to engage the link before we send any other events. * ext/dvdread/dvdreadsrc.c: (dvdreadsrc_init), (dvdreadsrc_finalize), (_close), (_open), (_seek_title), (_seek_chapter), (seek_sector), (dvdreadsrc_get), (dvdreadsrc_uri_get_uri), (dvdreadsrc_uri_set_uri): Handle URI of the form dvd://title[,chapter[,angle]]. Currently only dvd://title works in totem because typefinding sends a seek that ends up going back to chapter 1 regardless. * ext/mpeg2dec/gstmpeg2dec.c: * ext/mpeg2dec/gstmpeg2dec.h: Output correct timestamps and handle disconts. * ext/ogg/gstoggdemux.c: (get_relative): Small guard against a null dereference. * ext/pango/gsttextoverlay.c: (gst_textoverlay_finalize), (gst_textoverlay_set_property): Free memory when done. Don't call gst_event_filler_get_duration on EOS events. Use GST_LOG and GST_WARNING instead of g_message and g_warning. * ext/smoothwave/gstsmoothwave.c: (gst_smoothwave_init), (draw_line), (gst_smoothwave_dispose), (gst_sw_sinklink), (gst_sw_srclink), (gst_smoothwave_chain): Draw solid lines, prettier colours. * gst/mpeg2sub/gstmpeg2subt.c: (gst_mpeg2subt_init): Add a default palette that'll work for some movies. * gst/mpegstream/gstdvddemux.c: (gst_dvd_demux_init), (gst_dvd_demux_handle_dvd_event), (gst_dvd_demux_send_discont), (gst_dvd_demux_send_subbuffer), (gst_dvd_demux_reset): * gst/mpegstream/gstdvddemux.h: * gst/mpegstream/gstmpegdemux.c: (gst_mpeg_demux_send_discont), (gst_mpeg_demux_parse_syshead), (gst_mpeg_demux_parse_pes): * gst/mpegstream/gstmpegparse.c: (gst_mpeg_parse_init), (gst_mpeg_parse_handle_discont), (gst_mpeg_parse_parse_packhead): * gst/mpegstream/gstmpegparse.h: Use PTM/NAV events when for timestamp adjustment when connected to dvdnavsrc. Don't use many discont events where one suffices. * gst/playback/gstplaybasebin.c: (group_destroy), (gen_preroll_element), (gst_play_base_bin_add_element): * gst/playback/gstplaybasebin.h: Make sure we remove subtitles from the same bin we put them in. * gst/subparse/gstsubparse.c: (convert_encoding), (parse_subrip), (gst_subparse_buffer_format_autodetect), (gst_subparse_change_state): Fix some memleaks and invalid accesses. * gst/typefind/gsttypefindfunctions.c: (ogganx_type_find), (oggskel_type_find), (cmml_type_find), (plugin_init): Some typefind functions for Annodex v3.0 files * gst/wavparse/gstwavparse.h: GstRiffReadClass is the correct parent class.
2005-01-25 15:34:08 +00:00
if (a52dec->cache) {
buf = gst_buffer_join (a52dec->cache, buf);
a52dec->cache = NULL;
}
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
/* find and read header */
bit_rate = a52dec->bit_rate;
sample_rate = a52dec->sample_rate;
flags = 0;
while (size >= 7) {
length = a52_syncinfo (data, &flags, &sample_rate, &bit_rate);
if (length == 0) {
/* no sync */
data++;
size--;
} else if (length <= size) {
GST_DEBUG ("Sync: %d", length);
result = gst_a52dec_handle_frame (a52dec, data,
length, flags, sample_rate, bit_rate);
if (result != GST_FLOW_OK) {
size = 0;
break;
}
size -= length;
data += length;
} else {
/* not enough data */
GST_LOG ("Not enough data available");
break;
}
}
/* keep cache */
if (length == 0) {
GST_LOG ("No sync found");
}
if (size > 0) {
a52dec->cache = gst_buffer_create_sub (buf,
GST_BUFFER_SIZE (buf) - size, size);
}
gst_buffer_unref (buf);
gst_object_unref (a52dec);
return result;
}
static GstStateChangeReturn
gst_a52dec_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstA52Dec *a52dec = GST_A52DEC (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:{
GstA52DecClass *klass;
klass = GST_A52DEC_CLASS (G_OBJECT_GET_CLASS (a52dec));
a52dec->state = a52_init (klass->a52_cpuflags);
break;
}
case GST_STATE_CHANGE_READY_TO_PAUSED:
a52dec->samples = a52_samples (a52dec->state);
a52dec->bit_rate = -1;
a52dec->sample_rate = -1;
a52dec->stream_channels = A52_CHANNEL;
a52dec->using_channels = A52_CHANNEL;
a52dec->level = 1;
a52dec->bias = 0;
a52dec->time = 0;
a52dec->sent_segment = FALSE;
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
a52dec->samples = NULL;
if (a52dec->cache) {
gst_buffer_unref (a52dec->cache);
a52dec->cache = NULL;
}
break;
case GST_STATE_CHANGE_READY_TO_NULL:
a52_free (a52dec->state);
a52dec->state = NULL;
break;
default:
break;
}
return ret;
}
static void
gst_a52dec_set_property (GObject * object, guint prop_id, const GValue * value,
GParamSpec * pspec)
{
GstA52Dec *src = GST_A52DEC (object);
switch (prop_id) {
case ARG_DRC:
GST_OBJECT_LOCK (src);
src->dynamic_range_compression = g_value_get_boolean (value);
GST_OBJECT_UNLOCK (src);
break;
case ARG_MODE:
GST_OBJECT_LOCK (src);
src->request_channels &= ~A52_CHANNEL_MASK;
src->request_channels |= g_value_get_enum (value);
GST_OBJECT_UNLOCK (src);
break;
case ARG_LFE:
GST_OBJECT_LOCK (src);
src->request_channels &= ~A52_LFE;
src->request_channels |= g_value_get_boolean (value) ? A52_LFE : 0;
GST_OBJECT_UNLOCK (src);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_a52dec_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstA52Dec *src = GST_A52DEC (object);
switch (prop_id) {
case ARG_DRC:
GST_OBJECT_LOCK (src);
g_value_set_boolean (value, src->dynamic_range_compression);
GST_OBJECT_UNLOCK (src);
break;
case ARG_MODE:
GST_OBJECT_LOCK (src);
g_value_set_enum (value, src->request_channels & A52_CHANNEL_MASK);
GST_OBJECT_UNLOCK (src);
break;
case ARG_LFE:
GST_OBJECT_LOCK (src);
g_value_set_boolean (value, src->request_channels & A52_LFE);
GST_OBJECT_UNLOCK (src);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
plugin_init (GstPlugin * plugin)
{
/* ensure GstAudioChannelPosition type is registered */
if (!gst_audio_channel_position_get_type ())
return FALSE;
if (!gst_element_register (plugin, "a52dec", GST_RANK_SECONDARY,
GST_TYPE_A52DEC))
return FALSE;
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"a52dec",
"Decodes ATSC A/52 encoded audio streams",
plugin_init, VERSION, "GPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);