diff options
Diffstat (limited to 'ext/sdl/sdlaudiosink.c')
| -rw-r--r-- | ext/sdl/sdlaudiosink.c | 439 |
1 files changed, 0 insertions, 439 deletions
diff --git a/ext/sdl/sdlaudiosink.c b/ext/sdl/sdlaudiosink.c deleted file mode 100644 index ff03782d1..000000000 --- a/ext/sdl/sdlaudiosink.c +++ /dev/null @@ -1,439 +0,0 @@ -/* GStreamer - * Copyright (C) <2005> Edgard Lima <edgard.lima@indt.org.br> - * - * 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 - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "sdlaudiosink.h" - -#include <SDL_byteorder.h> -#include <string.h> - -#include <unistd.h> - -#include <gst/glib-compat-private.h> - -GST_DEBUG_CATEGORY_EXTERN (sdl_debug); -#define GST_CAT_DEFAULT sdl_debug - -static void gst_sdlaudio_sink_dispose (GObject * object); - -static GstCaps *gst_sdlaudio_sink_getcaps (GstBaseSink * bsink); - -static gboolean gst_sdlaudio_sink_open (GstAudioSink * asink); -static gboolean gst_sdlaudio_sink_close (GstAudioSink * asink); -static gboolean gst_sdlaudio_sink_prepare (GstAudioSink * asink, - GstRingBufferSpec * spec); -static gboolean gst_sdlaudio_sink_unprepare (GstAudioSink * asink); -static guint gst_sdlaudio_sink_write (GstAudioSink * asink, gpointer data, - guint length); - -#if 0 -static guint gst_sdlaudio_sink_delay (GstAudioSink * asink); -static void gst_sdlaudio_sink_reset (GstAudioSink * asink); -#endif - - -/* SdlaudioSink signals and args */ -enum -{ - LAST_SIGNAL -}; - -#define SEMAPHORE_INIT(s,f) \ - do { \ - s.cond = g_cond_new(); \ - s.mutex = g_mutex_new(); \ - s.mutexflag = f; \ - } while(0) - -#define SEMAPHORE_CLOSE(s) \ - do { \ - if ( s.cond ) { \ - g_cond_free(s.cond); \ - s.cond = NULL; \ - } \ - if ( s.mutex ) { \ - g_mutex_free(s.mutex); \ - s.mutex = NULL; \ - } \ - } while(0) - -#define SEMAPHORE_UP(s) \ - do \ - { \ - g_mutex_lock(s.mutex); \ - s.mutexflag = TRUE; \ - g_mutex_unlock(s.mutex); \ - g_cond_signal(s.cond); \ - } while(0) - -#define SEMAPHORE_DOWN(s, e) \ - do \ - { \ - while (1) { \ - g_mutex_lock(s.mutex); \ - if (!s.mutexflag) { \ - if ( e ) { \ - g_mutex_unlock(s.mutex); \ - break; \ - } \ - g_cond_wait(s.cond,s.mutex); \ - } \ - else { \ - s.mutexflag = FALSE; \ - g_mutex_unlock(s.mutex); \ - break; \ - } \ - g_mutex_unlock(s.mutex); \ - } \ - } while(0) - - -static GstStaticPadTemplate sdlaudiosink_sink_factory = - GST_STATIC_PAD_TEMPLATE ("sink", - GST_PAD_SINK, - GST_PAD_ALWAYS, - GST_STATIC_CAPS ("audio/x-raw-int, " - "endianness = (int) { " G_STRINGIFY (G_BYTE_ORDER) " }, " - "signed = (boolean) { TRUE, FALSE }, " - "width = (int) 16, " - "depth = (int) 16, " - "rate = (int) [ 1, MAX ], " - "channels = (int) [ 1, 2 ]; " - "audio/x-raw-int, " - "endianness = (int) { " G_STRINGIFY (G_BYTE_ORDER) " }, " - "signed = (boolean) { TRUE, FALSE }, " - "width = (int) 8, " - "depth = (int) 8, " - "rate = (int) [ 1, MAX ], " "channels = (int) [ 1, 2 ]") - ); - -GST_BOILERPLATE (GstSDLAudioSink, gst_sdlaudio_sink, GstAudioSink, - GST_TYPE_AUDIO_SINK); - -static void -gst_sdlaudio_sink_dispose (GObject * object) -{ - GstSDLAudioSink *sdlaudiosink = GST_SDLAUDIOSINK (object); - - SEMAPHORE_CLOSE (sdlaudiosink->semB); - - SEMAPHORE_CLOSE (sdlaudiosink->semA); - - if (sdlaudiosink->buffer) { - g_free (sdlaudiosink->buffer); - } - - G_OBJECT_CLASS (parent_class)->dispose (object); - -} - -static void -gst_sdlaudio_sink_base_init (gpointer g_class) -{ - GstElementClass *element_class = GST_ELEMENT_CLASS (g_class); - - gst_element_class_set_static_metadata (element_class, "SDL audio sink", - "Sink/Audio", - "Output to a sound card via SDLAUDIO", - "Edgard Lima <edgard.lima@indt.org.br>"); - - gst_element_class_add_static_pad_template (element_class, - &sdlaudiosink_sink_factory); -} - -static void -gst_sdlaudio_sink_class_init (GstSDLAudioSinkClass * klass) -{ - GObjectClass *gobject_class; - GstBaseSinkClass *gstbasesink_class; - GstAudioSinkClass *gstaudiosink_class; - - gobject_class = (GObjectClass *) klass; - gstbasesink_class = (GstBaseSinkClass *) klass; - gstaudiosink_class = (GstAudioSinkClass *) klass; - - gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_sdlaudio_sink_dispose); - - gstbasesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_sdlaudio_sink_getcaps); - - gstaudiosink_class->open = GST_DEBUG_FUNCPTR (gst_sdlaudio_sink_open); - gstaudiosink_class->close = GST_DEBUG_FUNCPTR (gst_sdlaudio_sink_close); - gstaudiosink_class->prepare = GST_DEBUG_FUNCPTR (gst_sdlaudio_sink_prepare); - gstaudiosink_class->unprepare = - GST_DEBUG_FUNCPTR (gst_sdlaudio_sink_unprepare); - gstaudiosink_class->write = GST_DEBUG_FUNCPTR (gst_sdlaudio_sink_write); - -#if 0 - gstaudiosink_class->delay = GST_DEBUG_FUNCPTR (gst_sdlaudio_sink_delay); - gstaudiosink_class->reset = GST_DEBUG_FUNCPTR (gst_sdlaudio_sink_reset); -#endif - -} - -static void -gst_sdlaudio_sink_init (GstSDLAudioSink * sdlaudiosink, - GstSDLAudioSinkClass * g_class) -{ - GST_DEBUG ("initializing sdlaudiosink"); - - memset (&sdlaudiosink->fmt, 0, sizeof (SDL_AudioSpec)); - - sdlaudiosink->buffer = NULL; - sdlaudiosink->eos = FALSE; - - SEMAPHORE_INIT (sdlaudiosink->semA, TRUE); - - SEMAPHORE_INIT (sdlaudiosink->semB, FALSE); - -} - -static GstCaps * -gst_sdlaudio_sink_getcaps (GstBaseSink * bsink) -{ - return gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD - (bsink))); -} - -static gint -gst_sdlaudio_sink_get_format (GstBufferFormat fmt) -{ - gint result = GST_UNKNOWN; - - switch (fmt) { - case GST_U8: - result = AUDIO_U8; - break; - case GST_S8: - result = AUDIO_S8; - break; - case GST_S16_LE: - result = AUDIO_S16LSB; - break; - case GST_S16_BE: - result = AUDIO_S16MSB; - break; - case GST_U16_LE: - result = AUDIO_U16LSB; - break; - case GST_U16_BE: - result = AUDIO_U16MSB; - break; - default: - break; - } - return result; -} - -static gboolean -gst_sdlaudio_sink_open (GstAudioSink * asink) -{ - GstSDLAudioSink *sdlaudio; - - sdlaudio = GST_SDLAUDIOSINK (asink); - - if (SDL_Init (SDL_INIT_AUDIO) < 0) { - goto open_failed; - } - - return TRUE; - -open_failed: - { - GST_ELEMENT_ERROR (sdlaudio, LIBRARY, INIT, - ("Unable to init SDL: %s\n", SDL_GetError ()), (NULL)); - return FALSE; - } -} - -static gboolean -gst_sdlaudio_sink_close (GstAudioSink * asink) -{ - GstSDLAudioSink *sdlaudio = GST_SDLAUDIOSINK (asink); - - sdlaudio->eos = TRUE; - SEMAPHORE_UP (sdlaudio->semA); - SEMAPHORE_UP (sdlaudio->semB); - SDL_QuitSubSystem (SDL_INIT_AUDIO); - return TRUE; -} - -static guint -gst_sdlaudio_sink_write (GstAudioSink * asink, gpointer data, guint length) -{ - GstSDLAudioSink *sdlaudio = GST_SDLAUDIOSINK (asink); - - if (sdlaudio->fmt.size != length) { - GST_ERROR ("ring buffer segment length (%u) != sdl buffer len (%u)", length, - sdlaudio->fmt.size); - } - - SEMAPHORE_DOWN (sdlaudio->semA, sdlaudio->eos); - - if (!sdlaudio->eos) - memcpy (sdlaudio->buffer, data, length); - - SEMAPHORE_UP (sdlaudio->semB); - - return sdlaudio->fmt.size; -} - - -static void -mixaudio (void *unused, Uint8 * stream, int len) -{ - GstSDLAudioSink *sdlaudio; - - sdlaudio = GST_SDLAUDIOSINK (unused); - - if (sdlaudio->fmt.size != len) { - GST_ERROR ("fmt buffer len (%u) != sdl callback len (%d)", - sdlaudio->fmt.size, len); - } - - SEMAPHORE_DOWN (sdlaudio->semB, sdlaudio->eos); - - if (!sdlaudio->eos) - SDL_MixAudio (stream, sdlaudio->buffer, sdlaudio->fmt.size, - SDL_MIX_MAXVOLUME); - - SEMAPHORE_UP (sdlaudio->semA); - -} - -static gboolean -gst_sdlaudio_sink_prepare (GstAudioSink * asink, GstRingBufferSpec * spec) -{ - GstSDLAudioSink *sdlaudio; - gint power2 = -1; - - sdlaudio = GST_SDLAUDIOSINK (asink); - - sdlaudio->fmt.format = gst_sdlaudio_sink_get_format (spec->format); - if (sdlaudio->fmt.format == 0) - goto wrong_format; - - if (spec->width != 16 && spec->width != 8) - goto dodgy_width; - - sdlaudio->fmt.freq = spec->rate; - sdlaudio->fmt.channels = spec->channels; - sdlaudio->fmt.samples = - spec->segsize / (spec->channels * ((sdlaudio->fmt.format & 0xFF) >> 3)); - sdlaudio->fmt.callback = mixaudio; - sdlaudio->fmt.userdata = sdlaudio; - - GST_DEBUG ("set segsize: %d, segtotal: %d, samples: %d", spec->segsize, - spec->segtotal, sdlaudio->fmt.samples); - - while (sdlaudio->fmt.samples) { - sdlaudio->fmt.samples >>= 1; - ++power2; - } - - sdlaudio->fmt.samples = 1; - sdlaudio->fmt.samples <<= power2; - - GST_DEBUG ("set segsize: %d, segtotal: %d, samples: %d", spec->segsize, - spec->segtotal, sdlaudio->fmt.samples); - - if (SDL_OpenAudio (&sdlaudio->fmt, NULL) < 0) { - goto unable_open; - } - - spec->segsize = sdlaudio->fmt.size; - - sdlaudio->buffer = g_malloc (sdlaudio->fmt.size); - memset (sdlaudio->buffer, sdlaudio->fmt.silence, sdlaudio->fmt.size); - - GST_DEBUG ("set segsize: %d, segtotal: %d, samples: %d", spec->segsize, - spec->segtotal, sdlaudio->fmt.samples); - - spec->bytes_per_sample = - spec->channels * ((sdlaudio->fmt.format & 0xFF) >> 3); - memset (spec->silence_sample, sdlaudio->fmt.silence, spec->bytes_per_sample); - - SDL_PauseAudio (0); - - return TRUE; - -unable_open: - { - GST_ELEMENT_ERROR (sdlaudio, RESOURCE, OPEN_READ, - ("Unable to open audio: %s", SDL_GetError ()), (NULL)); - return FALSE; - } -wrong_format: - { - GST_ELEMENT_ERROR (sdlaudio, RESOURCE, OPEN_READ, - ("Unable to get format %d", spec->format), (NULL)); - return FALSE; - } -dodgy_width: - { - GST_ELEMENT_ERROR (sdlaudio, RESOURCE, OPEN_READ, - ("unexpected width %d", spec->width), (NULL)); - return FALSE; - } -} - -static gboolean -gst_sdlaudio_sink_unprepare (GstAudioSink * asink) -{ - - SDL_CloseAudio (); - - return TRUE; - -#if 0 - if (!gst_sdlaudio_sink_close (asink)) - goto couldnt_close; - - if (!gst_sdlaudio_sink_open (asink)) - goto couldnt_reopen; - - return TRUE; - -couldnt_close: - { - GST_DEBUG ("Could not close the audio device"); - return FALSE; - } -couldnt_reopen: - { - GST_DEBUG ("Could not reopen the audio device"); - return FALSE; - } -#endif - -} - -#if 0 -static guint -gst_sdlaudio_sink_delay (GstAudioSink * asink) -{ - GstSDLAudioSink *sdlaudio; - - sdlaudio = GST_SDLAUDIOSINK (asink); - - return 0; -} - -static void -gst_sdlaudio_sink_reset (GstAudioSink * asink) -{ -} -#endif |