SDL_mixer now playing video stream audio!

singe/main.c

@@ -53,9 +53,10 @@
 #define true  1
 #define false 0
 
-#define AUDIO_RING_SIZE        4096
+#define AUDIO_RING_SIZE        (64 * 1024)
 #define AUDIO_SAMPLES          (AUDIO_RING_SIZE / (16 /* average bytes per sample */ * 2 /* channels */))
-#define AUDIO_SILENCE_SECONDS  4
+#define AUDIO_SILENCE_SECONDS  2
+#define AUDIO_CHUNK_MULTIPLIER 2
 
 
 typedef struct AudioRingBufferS {
@@ -77,17 +78,13 @@ void dequeueVideoAudio(int channel, void *stream, int len, void *udata) {
 
 	(void)channel;
 
-	ring->sizeTemp = ringbuf_bytes_used(ring->ring);
+	ring->sizeTemp = ringbuf_bytes_used(ring->ring);  // We do this in case more space is used by the mixer while we're working on this
 	if (len > (int)ring->sizeTemp) {
 		toCopy = (int)ring->sizeTemp;
 	}
-	if (SDL_LockMutex(ring->mutex) == 0) {
+	if (SDL_LockMutex(ring->mutex) < 0) die("Unable to lock mutex for ringbuf_memcpy_from");
 	ringbuf_memcpy_from(stream, ring->ring, (size_t)toCopy);
-		SDL_UnlockMutex(ring->mutex);
-	} else {
-		die("Unable to lock mutex for ringbuf_memcpy_from");
-	}
-
+	if (SDL_UnlockMutex(ring->mutex) < 0) die("Unable to unlock mutex for ringbuf_memcpy_from");
 	//say("Dequeued %d bytes of audio data.  Buffer is now %d.", toCopy, ringbuf_bytes_used(ring->ring));
 }
 
@@ -294,28 +291,35 @@ int main(int argc, char *argv[]) {
 			break;
 	}
 	if (audioProps->Channels > 2) die("Only mono and stereo audio are supported.");
+
 	// Create audio mixer device
-	err = Mix_OpenAudioDevice(44100, audioFormat, 2, audioSampleSize * audioProps->Channels, NULL, 0);
+	err = Mix_OpenAudio(audioProps->SampleRate, audioFormat, 2, audioSampleSize * audioProps->Channels * AUDIO_CHUNK_MULTIPLIER);
 	if (err != 0) die("%s", Mix_GetError());
+
 	// Create a buffer for reading audio from the video stream
 	audioSampleSize = audioSampleBytes * audioProps->Channels;
 	audioBuffer = (byte *)malloc((size_t)(audioSampleSize * AUDIO_SAMPLES) * sizeof(byte));
 	if (!audioBuffer) die("Unable to allocate %ld byte audio buffer.", ((size_t)(audioSampleSize * AUDIO_SAMPLES) * sizeof(byte)));
+
 	// Create a ring buffer to pass audio data from the video to the mixer
 	audioRingBuffer.ring = ringbuf_new(AUDIO_RING_SIZE);
 	if (!audioRingBuffer.ring) die("Unable to allocate %ld audio ring buffer.", AUDIO_RING_SIZE);
 	audioRingBuffer.mutex = SDL_CreateMutex();
 	if (!audioRingBuffer.mutex) die("Unable to create audio ring buffer mutex.");
+
 	// Create a block of silent audio to overlay with video stream audio
 	audioSilenceSize = (Uint32)audioSampleSize * (Uint32)audioProps->SampleRate * AUDIO_SILENCE_SECONDS;
 	audioSilenceRaw = (byte *)calloc(1, (size_t)audioSilenceSize * sizeof(byte));
 	if (!audioSilenceRaw) die("Unable to allocate %ld silence buffer.", audioSilenceSize);
+
 	// Load silent audio
 	silenceChunk = Mix_QuickLoad_RAW(audioSilenceRaw, audioSilenceSize);
 	if (!silenceChunk) die("%s", Mix_GetError());
+
 	// Start silent audio playback & immediately pause it
 	audioSilenceChannel = Mix_PlayChannel(-1, silenceChunk, -1);
 	if (audioSilenceChannel < 0) die("%s", Mix_GetError());
+
 	// Register effect to provide video stream audio on this channel
 	Mix_RegisterEffect(audioSilenceChannel, dequeueVideoAudio, NULL, &audioRingBuffer);
 
@@ -404,12 +408,9 @@ int main(int argc, char *argv[]) {
 			}
 
 			if (resetTime)  {
-				if (SDL_LockMutex(audioRingBuffer.mutex) == 0) {
+				if (SDL_LockMutex(audioRingBuffer.mutex) < 0) die("Unable to lock mutex for ringbuf_reset");
 				ringbuf_reset(audioRingBuffer.ring);
-					SDL_UnlockMutex(audioRingBuffer.mutex);
-				} else {
-					die("Unable to lock mutex for ringbuf_reset");
-				}
+				if (SDL_UnlockMutex(audioRingBuffer.mutex) < 0) die("Unable to unlock mutex for ringbuf_reset");
 				lastTickTime = 0;
 				frameDeltaTime = 0;
 				audioPosition = (int64_t)((double)(timestamp * 0.001) * (double)audioProps->SampleRate);
@@ -433,12 +434,9 @@ int main(int argc, char *argv[]) {
 			// Are we reading anything?
 			if (audioCount > 0) {
 				if (FFMS_GetAudio(audioSource, audioBuffer, audioPosition, audioCount, &errInfo)) die("%s", errInfo.Buffer);
-				if (SDL_LockMutex(audioRingBuffer.mutex) == 0) {
+				if (SDL_LockMutex(audioRingBuffer.mutex) < 0) die("Unable to lock mutex for ringbuf_memcpy_into");
 				ringbuf_memcpy_into(audioRingBuffer.ring, audioBuffer, (size_t)(audioCount * audioSampleSize));
-					SDL_UnlockMutex(audioRingBuffer.mutex);
-				} else {
-					die("Unable to lock mutex for ringbuf_memcpy_into");
-				}
+				if (SDL_UnlockMutex(audioRingBuffer.mutex) < 0) die("Unable to unlock mutex for ringbuf_memcpy_into");
 				//say("Added %d samples (%d bytes) to ring buffer.  Buffer is now %d bytes", audioCount, audioCount * audioSampleSize, ringbuf_bytes_used(audioRingBuffer.ring));
 				audioPosition += audioCount;
 			}

singe/preBuild.sh

@@ -22,7 +22,7 @@
 if [[ -z $1 ]]; then
 	BITS=64
 	THIRDPARTY=$(pwd)
-	DEST="${THIRDPARTY}/../../thirdparty-build/${BITS}"
+	DEST="${THIRDPARTY}/../thirdparty-build/${BITS}"
 else
 	THIRDPARTY=$1
 	DEST=$2/$3

singe/singe.pro

@@ -63,9 +63,10 @@ CONFIG += bits64
 
 BUILDTHIRDARGS =  \"$$PWD/thirdparty\" \"$$OUT_PWD/../thirdparty-build\" $$BITNESS
 win32 {
-	BUILDTHIRD.commands = cmd.exe /c $$PWD\\thirdparty\\build.bat $$BUILDTHIRDARGS
+	# Placeholder - doesn't work
+	BUILDTHIRD.commands = cmd.exe /c $$PWD\\preBuild.bat $$BUILDTHIRDARGS
 } else {
-	BUILDTHIRD.commands = bash $$PWD/thirdparty/build.sh $$BUILDTHIRDARGS
+	BUILDTHIRD.commands = bash $$PWD/preBuild.sh $$BUILDTHIRDARGS
 }
 BUILDTHIRD.target = this
 PRE_TARGETDEPS += this
@@ -137,8 +138,7 @@ LIBS += \
 	-ldl
 
 OTHER_FILES += \
-	thirdparty/build.sh \
-	thirdparty/build.bat \
+	preBuild.sh \
 	postLink.sh
 
 # Strip & UPX the final result

singe/thirdparty/build.bat

@@ -1,23 +0,0 @@
-@echo off
-goto skipLicense
-
-#
-#  Singe 2
-#  Copyright (C) 2019 Scott Duensing <scott@kangaroopunch.com>
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program 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 General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-#
-
-:skipLicense