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initial code for WMA readAudio:frames method added, severely broken

CQTexperiment
areff 2008-02-28 12:49:19 +00:00
parent c5a869d406
commit 04ef1c2fa3
1 changed files with 60 additions and 12 deletions
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72
Plugins/WMA/WMADecoder.m
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@ -18,14 +18,14 @@
- (BOOL)open:(id<CogSource>)s
{
source = [s retain];
ic = NULL;
av_register_all();
int err, i;
const char *filename = [[[source url] path] UTF8String];
int st_buff;
uint8_t *outbuf, *s_outbuf;
source = [s retain];
ic = NULL;
// register all available codecs
av_register_all();
NSLog(@"lolbots: %s", filename);
@ -58,11 +58,6 @@
return NO;
}
st_buff = ST_BUFF;
outbuf = av_malloc(AVCODEC_MAX_AUDIO_FRAME_SIZE);
s_outbuf = av_malloc(st_buff);
dump_format(ic, 0, filename, 0);
if (ic->title[0] != '\0')
@ -83,6 +78,15 @@
NSLog(@"Comments: %s", ic->comment);
NSLog(@"bitrate: %d", ic->bit_rate);
NSLog(@"sample rate: %d", c->sample_rate);
NSLog(@"channels: %d", c->channels);
channels = c->channels;
bitrate = ic->bit_rate;
bitsPerSample = c->channels * 8;
totalFrames = c->sample_rate * (ic->duration/1000000LL);
frequency = 0;
return YES;
}
@ -98,7 +102,51 @@
- (int)readAudio:(void *)buf frames:(UInt32)frames
{
return 0;
uint8_t *outbuf, *s_outbuf, *inbuf_ptr;
int size, out_size, st_buff, len;
AVPacket framePacket;
//int bytesPerFrame = (bitsPerSample/8) * channels;
st_buff = ST_BUFF;
outbuf = av_malloc(AVCODEC_MAX_AUDIO_FRAME_SIZE);
s_outbuf = av_malloc(st_buff);
// this NSLog is the only one I've ever seen activate for the end of file
if (av_read_frame(ic, &framePacket) < 0)
NSLog(@"Uh oh...");
size = framePacket.size;
inbuf_ptr = framePacket.data;
if (size < 0)
NSLog(@"NOES!");
len = avcodec_decode_audio(c, (short *)outbuf, &out_size,
inbuf_ptr, size);
if (out_size == 0)
NSLog(@"out_size is 0");
/* need to do both looping for the right amount of frames and memcpy'ing around
this neck of the woods. */
// loops loops, memcpy(buffer, readbuffer, length), epic lulz
// the frame packet needs to be freed before we av_read_frame a new one
if (framePacket.data)
av_free_packet(&framePacket);
if (outbuf)
av_free(outbuf);
if (s_outbuf)
av_free(s_outbuf);
// return the actual number of frames read here, not the wanted number
return frames;
}