Loading WAV Files — Handmade Hero — Episode Guide

1:06Assets: handmade_hero_test_assets_003.zip is released

2:57handmade_asset.cpp: Correct a mistype in WAVE_fmt

4:27handmade.cpp: Do a DEBUGLoadWAV call in GameUpdateAndRender

5:20Debugger: Step in to DEBUGLoadWAV

6:09Fall foul of Microsoft Visual Studio^α

7:33handmade_asset.cpp: Introduce riff_iterator to use in DEBUGLoadWAV

10:28handmade_asset.cpp: Add WAVE_ChunkID_data to RIFF_CODE

11:59handmade_asset.cpp: Continue on writing the usage code for DEBUGLoadWAV

13:07handmade_asset.cpp: Introduce ParseChunkAt

13:54handmade_asset.cpp: Introduce NextChunk

15:49handmade_asset.cpp: Introduce IsValid

16:38handmade_asset.cpp: Continue on writing DEBUGLoadWAV

17:25handmade_asset.cpp: Introduce GetChunkData

18:44Debugger: Step in to DEBUGLoadWAV

21:56handmade_asset.cpp: Remove Chunk from riff_iterator and ParseChunkAt, and instead use it in NextChunk and GetType

22:41Debugger: Continue on stepping through DEBUGLoadWAV

23:28Internet: Try and determine whether the RIFF file should end in zeros

26:50handmade_asset.cpp: Pad the Chunk->Size if it is odd

27:45handmade_asset.cpp: Subtract 4 from the Header->Size

28:41Debugger: Step through DEBUGLoadWAV and find that we're correctly iterating over the chunks

29:09handmade_asset.cpp: Assert certain data to be valid

30:08Internet: Find out what nBlockAlign means

31:17handmade_asset.cpp: Assert nBlockAlign to be 2 * nChannels

31:48handmade_asset.cpp: Set the ChannelCount and SampleData

32:49handmade_asset.cpp: Assert ChannelCount and SampleData to be valid

33:41handmade_asset.h: Add ChannelCount to loaded_sound

34:27Internet: Try to establish how to determine the sample count minus any rounding

34:59handmade_asset.cpp: Compute that SampleCount

35:45handmade_asset.cpp: Introduce GetChunkDataSize

36:32handmade_asset.cpp: Create arrays for our SampleData

37:57Blackboard: Deinterleaving audio channels in place

44:15handmade_asset.cpp: Write out the swizzling algorithm for the left channel

46:39handmade_asset.cpp: Spam in some test data

49:01Debugger: Check out the values in the right channel

50:47handmade.cpp and handmade.h: Reenable tSine

52:08handmade.h: Introduce loaded_sound TestSound

53:11handmade.cpp: Comment out GameOutputSound and use TestSound

55:22Run the game and hear that it doesn't sound very good

56:02Debugger: Step through the SampleIndex loop

56:48handmade.cpp: Make the Sample data be int16

57:27Run the game and still hear the clicking

57:50Listen to the sound

58:41handmade.cpp: Read through the SampleIndex loop

59:37Debugger: Step in and inspect the SampleData

1:01:04Internet: Take a look at PCM Data

1:01:58handmade_asset.cpp: Remove the test code

1:02:29Run the game and hear it more correctly

1:02:42build.bat: Switch to -O2

1:03:09win32_handmade.cpp: Set GameUpdateHz to MonitorRefreshHz / 2.0f

1:03:21Run the game and hear it all playing correctly

1:03:59handmade.cpp: Play music_test.wav

1:04:16Q&A

🗩

1:04:16Q&A

🗩

1:04:16Q&A

🗩

1:04:45robotchocolatedino You could try uninterleaving the channels in place like this: http://imgur.com/ZcDu4Tb

🗪

1:04:45robotchocolatedino You could try uninterleaving the channels in place like this: http://imgur.com/ZcDu4Tb

🗪

1:04:45robotchocolatedino You could try uninterleaving the channels in place like this: http://imgur.com/ZcDu4Tb

🗪

1:05:50pseudonym73 Probably the second-easiest way to deinterleave is multi-pass. Swap R0/L1, R2/L3, L4/L5 etc. Then do the same with two-sample blocks, four-sample blocks, etc. Easiest way is to deinterleave directly into mix/output buffer.

🗪

1:05:50pseudonym73 Probably the second-easiest way to deinterleave is multi-pass. Swap R0/L1, R2/L3, L4/L5 etc. Then do the same with two-sample blocks, four-sample blocks, etc. Easiest way is to deinterleave directly into mix/output buffer.

🗪

1:05:50pseudonym73 Probably the second-easiest way to deinterleave is multi-pass. Swap R0/L1, R2/L3, L4/L5 etc. Then do the same with two-sample blocks, four-sample blocks, etc. Easiest way is to deinterleave directly into mix/output buffer.

🗪

1:06:18desuused Why do you need to un-interleave sound? When you play it, you still have to read both left and right values

🗪

1:06:18desuused Why do you need to un-interleave sound? When you play it, you still have to read both left and right values

🗪

1:06:18desuused Why do you need to un-interleave sound? When you play it, you still have to read both left and right values

🗪

1:06:39abnercoimbre People are asking about the benefits of extern C? What issues does it address?

🗪

1:06:39abnercoimbre People are asking about the benefits of extern C? What issues does it address?

🗪

1:06:39abnercoimbre People are asking about the benefits of extern C? What issues does it address?

🗪

1:08:43constantinopol Casey, can you please explain: (Chunk->Size + 1) & -1 ?

🗪

1:08:43constantinopol Casey, can you please explain: (Chunk->Size + 1) & -1 ?

🗪

1:08:43constantinopol Casey, can you please explain: (Chunk->Size + 1) & -1 ?

🗪

1:14:14popcorn0x90 Why are the samples interleaved and not flat?

🗪

1:14:14popcorn0x90 Why are the samples interleaved and not flat?

🗪

1:14:14popcorn0x90 Why are the samples interleaved and not flat?

🗪

1:15:18marumoto If you think of your interleaved data as an Nx2 matrix, then transposition can be viewed as interleaving. Here is an in-place way to do it: https://goo.gl/fgPmrg

🗪

1:15:18marumoto If you think of your interleaved data as an Nx2 matrix, then transposition can be viewed as interleaving. Here is an in-place way to do it: https://goo.gl/fgPmrg

🗪

1:15:18marumoto If you think of your interleaved data as an Nx2 matrix, then transposition can be viewed as interleaving. Here is an in-place way to do it: https://goo.gl/fgPmrg

🗪

1:16:08rpg_ignis Thank you

🗪

1:16:08rpg_ignis Thank you

🗪

1:16:08rpg_ignis Thank you

🗪

1:18:05pragmascrypt Why do you want to change the PCM data in place instead of compacting it to just the information you need and allocating extra space?

🗪

1:18:05pragmascrypt Why do you want to change the PCM data in place instead of compacting it to just the information you need and allocating extra space?

🗪

1:18:05pragmascrypt Why do you want to change the PCM data in place instead of compacting it to just the information you need and allocating extra space?

🗪

1:19:09Wrap it up

🗩

1:19:09Wrap it up

🗩

1:19:09Wrap it up

🗩

Keyboard Navigation

Global Keys

Menu toggling

In-Menu and Index Controls

Quotes and References Menus and Index

Quotes, References and Credits Menus

Filter Menu

Filter and Link Menus

Credits Menu