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Audio recording can now about all audio rates ZSNES supports for PAL and NTSC at stereo. Audio writing buffering removed for now. Fixed bug when writing 32000Hz at PAL.

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This commit is contained in:
n-a-c-h
2006-02-27 13:42:31 +00:00
parent 0bb0ee4075
commit a5211e5b27
1 changed files with 84 additions and 84 deletions
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112
zsnes/src/zmovie.c
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@@ -1848,21 +1848,26 @@ Code for dumping raw video
*/
#define RAW_BUFFER_SAMPLES 12800
#define RAW_WIDTH 256
#define RAW_HEIGHT 224
//NTSC FPS is 59.948743718592964824120603015060 in AVI that's a fraction of 59649/995
//which equals 59.948743718592964824120603015075, so videos should not desync for several millinium
//FPS = 64000 / Samples per Frame
//FPS = Rate*Stereo / Samples per Frame
//These two numbers help with calculating how many samples are needed per frame
//59.948743718592964824120603015060 = SAMPLE_NTSC_HI*32000/SAMPLE_NTSC_LO *2
#define SAMPLE_NTSC_HI 31840000ULL
//59.948743718592964824120603015060 = SAMPLE_NTSC_LO*Rate/SAMPLE_NTSC_HI
//Samples per Frame = SAMPLE_NTSC_HI/SAMPLE_NTSC_LO *Stereo
#define SAMPLE_NTSC_HI_SCALE 995ULL
#define SAMPLE_NTSC_LO 59649ULL
//Code using this by Bisqwit
//Used by raw videos for calculating sample rate in NTSC mode
//Code by Bisqwit
static const unsigned int freqtab[] = { 8000, 11025, 22050, 44100, 16000, 32000, 48000 };
extern unsigned int SoundQuality;
#define RATE freqtab[SoundQuality]
//0 = None; 1 Logging, but not now, 2 Log now
@@ -1926,8 +1931,6 @@ struct
FILE *vp;
FILE *ap;
unsigned short *sample_buffer;
size_t sample_index;
size_t aud_dsize_pos;
//These next three are only used for NTSC videos to keep sample rate correct
@@ -1955,17 +1958,7 @@ static void raw_video_close()
if (raw_vid.ap)
{
if (raw_vid.sample_buffer)
{
size_t file_size;
if (raw_vid.sample_index)
{
fwrite(raw_vid.sample_buffer, 2, raw_vid.sample_index, raw_vid.ap); //Sample is 2 bytes
}
free(raw_vid.sample_buffer);
file_size = ftell(raw_vid.ap); //Get file size
size_t file_size = ftell(raw_vid.ap); //Get file size
if (!fseek(raw_vid.ap, 4, SEEK_SET)) //Seek to after RIFF header
{
fwrite4(file_size - 8, raw_vid.ap); //Don't include header or this write, -8
@@ -1978,7 +1971,6 @@ static void raw_video_close()
}
fclose(raw_vid.ap);
raw_vid.ap = 0;
}
AudioLogging = 0;
}
}
@@ -2013,8 +2005,6 @@ static bool raw_video_open()
if (!MovieVideoMode || raw_vid.vp)
{
if ((raw_vid.ap = fopen(md_pcm_audio, "wb")))
{
if ((raw_vid.sample_buffer = (unsigned short *)malloc(RAW_BUFFER_SAMPLES*sizeof(short))))
{
fputs("RIFF", raw_vid.ap); //header
fwrite4(~0, raw_vid.ap); //file size - unknown till file close
@@ -2022,8 +2012,8 @@ static bool raw_video_open()
fwrite4(0x12, raw_vid.ap); //fmt size
fwrite2(1, raw_vid.ap); //fmt type (PCM)
fwrite2(2, raw_vid.ap); //channels
fwrite4(32000, raw_vid.ap); //sample rate
fwrite4(32000*4, raw_vid.ap); //byte rate (sample rate*block align)
fwrite4(RATE, raw_vid.ap); //sample rate
fwrite4(RATE*4, raw_vid.ap); //byte rate (sample rate*block align)
fwrite2(16/8*2, raw_vid.ap); //block align (SignificantBitsPerSample / 8 * NumChannels)
fwrite2(16, raw_vid.ap); //Significant bits per sample
fwrite2(0, raw_vid.ap); //Extra format bytes
@@ -2033,20 +2023,49 @@ static bool raw_video_open()
if (!romispal)
{
raw_vid.sample_ntsc_hi = SAMPLE_NTSC_HI;
raw_vid.sample_ntsc_hi = SAMPLE_NTSC_HI_SCALE*RATE;
raw_vid.sample_ntsc_lo = SAMPLE_NTSC_LO;
raw_vid.sample_ntsc_balance = SAMPLE_NTSC_HI;
raw_vid.sample_ntsc_balance = raw_vid.sample_ntsc_hi;
}
AudioLogging = 1;
return(true);
}
}
}
raw_video_close();
return(false);
}
static void raw_audio_write(unsigned int samples)
{
void ProcessSoundBuffer();
extern int DSPBuffer[1280];
extern unsigned int BufferSizeB, BufferSizeW;
unsigned int i = 0;
int temp;
if (samples > 1280)
{
raw_audio_write(1280);
samples -= 1280;
}
BufferSizeB = samples;
BufferSizeW = samples<<1;
AudioLogging = 2;
asm_call(ProcessSoundBuffer);
AudioLogging = 1;
for (i = 0; i < BufferSizeB; i++)
{
temp = DSPBuffer[i];
if (temp > 32767) { temp = 32767; }
else if (temp < -32768) { temp =-32768; }
fwrite2((short)temp, raw_vid.ap);
}
}
#define PIXEL (vidbuffer[(i*288) + j + 16])
static void raw_video_write_frame()
{
@@ -2067,45 +2086,26 @@ static void raw_video_write_frame()
if (raw_vid.ap)
{
void ProcessSoundBuffer();
extern int DSPBuffer[1280];
extern unsigned int BufferSizeB, BufferSizeW;
unsigned int i = 0;
int temp;
unsigned int samples;
if (romispal)
{
BufferSizeB = 1280;
samples = RATE*2/50;
if (samples & 1)
{
static signed char odd_carry = 0;
samples += odd_carry-1;
odd_carry ^= 2;
}
}
else
{
//Thanks Bisqwit for this algorithm
BufferSizeB = (raw_vid.sample_ntsc_balance/raw_vid.sample_ntsc_lo) << 1;
samples = (raw_vid.sample_ntsc_balance/raw_vid.sample_ntsc_lo) << 1;
raw_vid.sample_ntsc_balance %= raw_vid.sample_ntsc_lo;
raw_vid.sample_ntsc_balance += raw_vid.sample_ntsc_hi;
//printf("Frame %u: %u samples\n", raw_vid.frame_index, BufferSizeB);
}
BufferSizeW = BufferSizeB<<1;
AudioLogging = 2;
asm_call(ProcessSoundBuffer);
AudioLogging = 1;
for (i = 0; i < BufferSizeB; i++)
{
temp = DSPBuffer[i];
if (temp > 32767) { temp = 32767; }
else if (temp < -32768) { temp =-32768; }
raw_vid.sample_buffer[raw_vid.sample_index] = temp;
raw_vid.sample_index++;
if (raw_vid.sample_index == RAW_BUFFER_SAMPLES)
{
fwrite(raw_vid.sample_buffer, 2, RAW_BUFFER_SAMPLES, raw_vid.ap); //Each sample is 2 bytes
raw_vid.sample_index = 0;
}
//printf("Frame %u: %u samples\n", raw_vid.sample_index, BufferSizeB);
}
raw_audio_write(samples);
}
}