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vorbis_encoder: make ogg_page a local variable 

Converted the ogg_page attribute from the vorbis_encoder struct to a
local function of vorbis_encoder_read().  This simplifies some code,
because we don't need to check the page anymore before using it.
This commit is contained in:
Max Kellermann 2009-03-15 02:26:16 +01:00
parent 65cc280e1a
commit eb34bd2eff
1 changed files with 14 additions and 25 deletions
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39
src/encoder/vorbis_encoder.c
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@ -43,7 +43,6 @@ struct vorbis_encoder {
struct audio_format audio_format;
ogg_stream_state os;
ogg_page page;
vorbis_dsp_state vd;
vorbis_block vb;
@ -207,7 +206,6 @@ vorbis_encoder_open(struct encoder *_encoder,
audio_format->bits = 16;
encoder->audio_format = *audio_format;
memset(&encoder->page, 0, sizeof(encoder->page));
ret = vorbis_encoder_reinit(encoder, error);
if (!ret)
@ -336,8 +334,6 @@ vorbis_encoder_write(struct encoder *_encoder,
struct vorbis_encoder *encoder = (struct vorbis_encoder *)_encoder;
unsigned num_frames;
assert(encoder->page.header_len == 0 && encoder->page.body_len == 0);
num_frames = length / audio_format_frame_size(&encoder->audio_format);
/* this is for only 16-bit audio */
@ -356,37 +352,30 @@ static size_t
vorbis_encoder_read(struct encoder *_encoder, void *_dest, size_t length)
{
struct vorbis_encoder *encoder = (struct vorbis_encoder *)_encoder;
ogg_page page;
int ret;
unsigned char *dest = _dest;
size_t nbytes;
if (encoder->page.header_len == 0 && encoder->page.body_len == 0) {
int ret;
ret = ogg_stream_pageout(&encoder->os, &encoder->page);
if (ret == 0 && encoder->flush) {
encoder->flush = false;
ret = ogg_stream_flush(&encoder->os, &encoder->page);
}
if (ret == 0)
return 0;
assert(encoder->page.header_len > 0 ||
encoder->page.body_len > 0);
ret = ogg_stream_pageout(&encoder->os, &page);
if (ret == 0 && encoder->flush) {
encoder->flush = false;
ret = ogg_stream_flush(&encoder->os, &page);
}
nbytes = (size_t)encoder->page.header_len +
(size_t)encoder->page.body_len;
if (ret == 0)
return 0;
assert(page.header_len > 0 || page.body_len > 0);
nbytes = (size_t)page.header_len + (size_t)page.body_len;
if (nbytes > length)
/* XXX better error handling */
g_error("buffer too small");
memcpy(dest, encoder->page.header, encoder->page.header_len);
memcpy(dest + encoder->page.header_len, encoder->page.body,
encoder->page.body_len);
memset(&encoder->page, 0, sizeof(encoder->page));
memcpy(dest, page.header, page.header_len);
memcpy(dest + page.header_len, page.body, page.body_len);
return nbytes;
}