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Use direct non-interleaved full precision output data instead of converting to 16 bit interleaved data.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@7734 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Thom Johansen 2005-11-02 19:43:52 +00:00
parent 3661215134
commit 0263ece7f8
2 changed files with 10 additions and 6 deletions
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13
apps/codecs/aac.c
View file

@ -66,8 +66,8 @@ enum codec_status codec_start(struct codec_api* api)
ci->configure(CODEC_DSP_ENABLE, (bool *)true);
ci->configure(DSP_DITHER, (bool *)false);
ci->configure(DSP_SET_STEREO_MODE, (int *)STEREO_INTERLEAVED);
ci->configure(DSP_SET_SAMPLE_DEPTH, (int *)(16));
ci->configure(DSP_SET_STEREO_MODE, (int *)STEREO_NONINTERLEAVED);
ci->configure(DSP_SET_SAMPLE_DEPTH, (int *)(29));
next_track:
@ -100,7 +100,7 @@ enum codec_status codec_start(struct codec_api* api)
}
NeAACDecConfigurationPtr conf = NeAACDecGetCurrentConfiguration(hDecoder);
conf->outputFormat = 1; // 16-bit integers
conf->outputFormat = FAAD_FMT_24BIT; /* irrelevant, we don't convert */
NeAACDecSetConfiguration(hDecoder, conf);
unsigned long s=0;
@ -147,7 +147,8 @@ enum codec_status codec_start(struct codec_api* api)
/* Decode one block - returned samples will be host-endian */
rb->yield();
decodedbuffer = NeAACDecDecode(hDecoder, &frameInfo, buffer, n);
/* ignore decodedbuffer return value, we access samples in the
decoder struct directly */
if (frameInfo.error > 0) {
LOGF("FAAD: decoding error \"%s\"\n", NeAACDecGetErrorMessage(frameInfo.error));
return CODEC_ERROR;
@ -161,7 +162,9 @@ enum codec_status codec_start(struct codec_api* api)
/* Output the audio */
rb->yield();
while (!rb->pcmbuf_insert((char*)decodedbuffer, frameInfo.samples << 1))
while (!rb->pcmbuf_insert_split(hDecoder->time_out[0],
hDecoder->time_out[1],
frameInfo.samples*2))
rb->yield();
/* Update the elapsed-time indicator */

3
apps/codecs/libfaad/decoder.c
View file

@ -982,9 +982,10 @@ static void* aac_frame_decode(NeAACDecHandle hDecoder, NeAACDecFrameInfo *hInfo,
}
#endif
/* we don't need sample conversion in rockbox.
sample_buffer = output_to_PCM(hDecoder, hDecoder->time_out, sample_buffer,
output_channels, frame_len, hDecoder->config.outputFormat);
*/
hDecoder->postSeekResetFlag = 0;