зеркало из https://github.com/mozilla/gecko-dev.git
380 строки
9.9 KiB
C++
380 строки
9.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <QApplication>
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#include <string.h>
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#include "nscore.h"
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#include "plstr.h"
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#include "prlink.h"
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#include "nsSound.h"
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#include "nsString.h"
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#include "nsIURL.h"
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#include "nsIFileURL.h"
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#include "nsNetUtil.h"
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#include "nsCOMPtr.h"
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#include "nsNativeCharsetUtils.h"
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#include "nsAutoPtr.h"
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/* used with esd_open_sound */
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static int esdref = -1;
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static PRLibrary *elib = nullptr;
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// the following from esd.h
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#define ESD_BITS8 (0x0000)
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#define ESD_BITS16 (0x0001)
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#define ESD_MONO (0x0010)
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#define ESD_STEREO (0x0020)
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#define ESD_STREAM (0x0000)
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#define ESD_PLAY (0x1000)
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#define WAV_MIN_LENGTH 44
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typedef int (*EsdOpenSoundType)(const char *host);
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typedef int (*EsdCloseType)(int);
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/* used to play the sounds from the find symbol call */
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typedef int (*EsdPlayStreamType) (int, int, const char *, const char *);
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typedef int (*EsdAudioOpenType) (void);
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typedef int (*EsdAudioWriteType) (const void *, int);
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typedef void (*EsdAudioCloseType) (void);
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NS_IMPL_ISUPPORTS2(nsSound, nsISound, nsIStreamLoaderObserver)
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nsSound::nsSound()
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: mInited( false )
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{
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}
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nsSound::~nsSound()
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{
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/* see above comment */
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if (esdref != -1) {
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EsdCloseType EsdClose = (EsdCloseType) PR_FindFunctionSymbol(elib, "esd_close");
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if (EsdClose)
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(*EsdClose)(esdref);
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esdref = -1;
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}
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}
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/**
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* unload esd library
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*/
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void
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nsSound::Shutdown()
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{
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if (elib) {
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PR_UnloadLibrary(elib);
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elib = nullptr;
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}
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}
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NS_IMETHODIMP
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nsSound::Init()
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{
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/* we don't need to do esd_open_sound if we are only going to play files
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but we will if we want to do things like streams, etc
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*/
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if (mInited)
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return NS_OK;
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if (elib)
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return NS_OK;
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EsdOpenSoundType EsdOpenSound;
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elib = PR_LoadLibrary("libesd.so.0");
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if (!elib) return NS_ERROR_NOT_AVAILABLE;
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EsdOpenSound = (EsdOpenSoundType) PR_FindFunctionSymbol(elib, "esd_open_sound");
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if (!EsdOpenSound)
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return NS_ERROR_FAILURE;
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esdref = (*EsdOpenSound)("localhost");
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if (!esdref)
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return NS_ERROR_FAILURE;
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mInited = true;
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return NS_OK;
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}
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NS_METHOD nsSound::Beep()
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{
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QApplication::beep();
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return NS_OK;
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}
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/**
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* This can't be implemented directly with QT.
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* (We can use QSound to play local files but that was not enough.
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* Also support of media formats is limited)
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*
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* Current implementation is copied from GTK side and implementation uses ESD interface.
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*
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* If we have Qtopia then we can drop ESD implementation and use Qtopia "Multimedia API"
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*/
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NS_IMETHODIMP nsSound::OnStreamComplete(nsIStreamLoader *aLoader,
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nsISupports *context,
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nsresult aStatus,
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PRUint32 dataLen,
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const PRUint8 *data)
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{
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#define GET_WORD(s, i) (s[i+1] << 8) | s[i]
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#define GET_DWORD(s, i) (s[i+3] << 24) | (s[i+2] << 16) | (s[i+1] << 8) | s[i]
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// print a load error on bad status, and return
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if (NS_FAILED(aStatus)) {
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#ifdef DEBUG
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if (aLoader) {
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nsCOMPtr<nsIRequest> request;
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aLoader->GetRequest(getter_AddRefs(request));
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if (request) {
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nsCOMPtr<nsIURI> uri;
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nsCOMPtr<nsIChannel> channel = do_QueryInterface(request);
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if (channel) {
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channel->GetURI(getter_AddRefs(uri));
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if (uri) {
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nsCAutoString uriSpec;
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uri->GetSpec(uriSpec);
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printf("Failed to load %s\n", uriSpec.get());
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}
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}
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}
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}
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#endif
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return aStatus;
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}
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int fd, mask = 0;
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PRUint32 samples_per_sec = 0, avg_bytes_per_sec = 0, chunk_len = 0;
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PRUint16 format, channels = 1, bits_per_sample = 0;
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const PRUint8 *audio = nullptr;
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size_t audio_len = 0;
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if (dataLen < 4) {
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NS_WARNING("Sound stream too short to determine its type");
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return NS_ERROR_FAILURE;
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}
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if (memcmp(data, "RIFF", 4)) {
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#ifdef DEBUG
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printf("We only support WAV files currently.\n");
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#endif
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return NS_ERROR_FAILURE;
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}
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if (dataLen <= WAV_MIN_LENGTH) {
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NS_WARNING("WAV files should be longer than 44 bytes.");
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return NS_ERROR_FAILURE;
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}
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PRUint32 i = 12;
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while (i + 7 < dataLen) {
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if (!memcmp(data + i, "fmt ", 4) && !chunk_len) {
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i += 4;
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/* length of the rest of this subblock (should be 16 for PCM data */
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chunk_len = GET_DWORD(data, i);
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i += 4;
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if (chunk_len < 16 || i + chunk_len >= dataLen) {
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NS_WARNING("Invalid WAV file: bad fmt chunk.");
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return NS_ERROR_FAILURE;
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}
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format = GET_WORD(data, i);
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i += 2;
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channels = GET_WORD(data, i);
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i += 2;
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samples_per_sec = GET_DWORD(data, i);
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i += 4;
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avg_bytes_per_sec = GET_DWORD(data, i);
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i += 4;
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// block align
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i += 2;
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bits_per_sample = GET_WORD(data, i);
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i += 2;
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/* we don't support WAVs with odd compression codes */
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if (chunk_len != 16)
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NS_WARNING("Extra format bits found in WAV. Ignoring");
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i += chunk_len - 16;
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} else if (!memcmp(data + i, "data", 4)) {
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i += 4;
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if (!chunk_len) {
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NS_WARNING("Invalid WAV file: no fmt chunk found");
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return NS_ERROR_FAILURE;
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}
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audio_len = GET_DWORD(data, i);
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i += 4;
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/* try to play truncated WAVs */
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if (i + audio_len > dataLen)
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audio_len = dataLen - i;
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audio = data + i;
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break;
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} else {
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i += 4;
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i += GET_DWORD(data, i);
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i += 4;
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}
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}
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if (!audio) {
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NS_WARNING("Invalid WAV file: no data chunk found");
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return NS_ERROR_FAILURE;
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}
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/* No audio data? well, at least the WAV was valid. */
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if (!audio_len)
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return NS_OK;
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#if 0
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printf("f: %d | c: %d | sps: %li | abps: %li | ba: %d | bps: %d | rate: %li\n",
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format, channels, samples_per_sec, avg_bytes_per_sec, block_align, bits_per_sample, rate);
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#endif
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/* open up connection to esd */
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EsdPlayStreamType EsdPlayStream =
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(EsdPlayStreamType) PR_FindFunctionSymbol(elib,
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"esd_play_stream");
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if (!EsdPlayStream)
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return NS_ERROR_FAILURE;
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mask = ESD_PLAY | ESD_STREAM;
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if (bits_per_sample == 8)
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mask |= ESD_BITS8;
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else
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mask |= ESD_BITS16;
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if (channels == 1)
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mask |= ESD_MONO;
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else
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mask |= ESD_STEREO;
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nsAutoArrayPtr<PRUint8> buf;
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// ESD only handle little-endian data.
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// Swap the byte order if we're on a big-endian architecture.
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#ifdef IS_BIG_ENDIAN
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if (bits_per_sample != 8) {
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buf = new PRUint8[audio_len];
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if (!buf)
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return NS_ERROR_OUT_OF_MEMORY;
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for (PRUint32 j = 0; j + 2 < audio_len; j += 2) {
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buf[j] = audio[j + 1];
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buf[j + 1] = audio[j];
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}
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audio = buf;
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}
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#endif
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fd = (*EsdPlayStream)(mask, samples_per_sec, NULL, "mozillaSound");
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if (fd < 0) {
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int *esd_audio_format = (int *) PR_FindSymbol(elib, "esd_audio_format");
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int *esd_audio_rate = (int *) PR_FindSymbol(elib, "esd_audio_rate");
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EsdAudioOpenType EsdAudioOpen = (EsdAudioOpenType) PR_FindFunctionSymbol(elib, "esd_audio_open");
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EsdAudioWriteType EsdAudioWrite = (EsdAudioWriteType) PR_FindFunctionSymbol(elib, "esd_audio_write");
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EsdAudioCloseType EsdAudioClose = (EsdAudioCloseType) PR_FindFunctionSymbol(elib, "esd_audio_close");
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if (!esd_audio_format || !esd_audio_rate ||
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!EsdAudioOpen || !EsdAudioWrite || !EsdAudioClose)
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return NS_ERROR_FAILURE;
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*esd_audio_format = mask;
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*esd_audio_rate = samples_per_sec;
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fd = (*EsdAudioOpen)();
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if (fd < 0)
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return NS_ERROR_FAILURE;
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(*EsdAudioWrite)(audio, audio_len);
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(*EsdAudioClose)();
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} else {
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while (audio_len > 0) {
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size_t written = write(fd, audio, audio_len);
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if (written <= 0)
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break;
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audio += written;
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audio_len -= written;
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}
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close(fd);
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}
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return NS_OK;
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}
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NS_METHOD nsSound::Play(nsIURL *aURL)
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{
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nsresult rv;
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if (!mInited)
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Init();
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if (!elib)
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return NS_ERROR_NOT_AVAILABLE;
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nsCOMPtr<nsIStreamLoader> loader;
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rv = NS_NewStreamLoader(getter_AddRefs(loader), aURL, this);
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return rv;
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}
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NS_IMETHODIMP nsSound::PlaySystemSound(const nsAString &aSoundAlias)
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{
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if (NS_IsMozAliasSound(aSoundAlias)) {
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NS_WARNING("nsISound::playSystemSound is called with \"_moz_\" events, they are obsolete, use nsISound::playEventSound instead");
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if (aSoundAlias.Equals(NS_SYSSOUND_MAIL_BEEP))
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return Beep();
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return NS_OK;
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}
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nsresult rv;
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nsCOMPtr <nsIURI> fileURI;
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// create a nsIFile and then a nsIFileURL from that
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nsCOMPtr <nsIFile> soundFile;
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rv = NS_NewLocalFile(aSoundAlias, true,
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getter_AddRefs(soundFile));
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NS_ENSURE_SUCCESS(rv,rv);
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rv = NS_NewFileURI(getter_AddRefs(fileURI), soundFile);
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NS_ENSURE_SUCCESS(rv,rv);
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nsCOMPtr<nsIFileURL> fileURL = do_QueryInterface(fileURI,&rv);
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NS_ENSURE_SUCCESS(rv,rv);
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rv = Play(fileURL);
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return rv;
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}
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NS_IMETHODIMP nsSound::PlayEventSound(PRUint32 aEventId)
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{
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return aEventId == EVENT_NEW_MAIL_RECEIVED ? Beep() : NS_OK;
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}
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