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rwops: Make read and write work like POSIX, not stdio.

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This simplifies some things, clarifies some things, and also allows
for the possibility of RWops that offer non-blocking i/o (although
none of the current built-in ones do, intentionally, we could add this
later if we choose, or people could provide things like network socket
RWops implementations now, etc.

Fixes #6729.
This commit is contained in:
Ryan C. Gordon
2022-12-14 15:42:54 -05:00
parent e9a9afaded
commit 72c1f73bc5
14 changed files with 196 additions and 197 deletions
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10
src/audio/disk/SDL_diskaudio.c
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@@ -47,16 +47,16 @@ static void DISKAUDIO_WaitDevice(_THIS)
static void DISKAUDIO_PlayDevice(_THIS)
{
const size_t written = SDL_RWwrite(_this->hidden->io,
const Sint64 written = SDL_RWwrite(_this->hidden->io,
_this->hidden->mixbuf,
1, _this->spec.size);
_this->spec.size);
/* If we couldn't write, assume fatal error for now */
if (written != _this->spec.size) {
SDL_OpenedAudioDeviceDisconnected(_this);
}
#ifdef DEBUG_AUDIO
fprintf(stderr, "Wrote %d bytes of audio data\n", written);
fprintf(stderr, "Wrote %d bytes of audio data\n", (int) written);
#endif
}
@@ -73,8 +73,8 @@ static int DISKAUDIO_CaptureFromDevice(_THIS, void *buffer, int buflen)
SDL_Delay(h->io_delay);
if (h->io) {
const size_t br = SDL_RWread(h->io, buffer, 1, buflen);
buflen -= (int)br;
const int br = (int) SDL_RWread(h->io, buffer, (Sint64) buflen);
buflen -= br;
buffer = ((Uint8 *)buffer) + br;
if (buflen > 0) { /* EOF (or error, but whatever). */
SDL_RWclose(h->io);