xenia-project/FFmpeg
1
0
Fork 0
mirror of https://github.com/xenia-project/FFmpeg.git synced 2024-11-23 19:49:56 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

mace: use planar sample format

Browse Source
This commit is contained in:
Justin Ruggles 2012-08-27 14:19:51 -04:00
parent 23d53c5473
commit c1a9cfd1fe
1 changed files with 15 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
libavcodec/mace.c
View File

@ -187,9 +187,7 @@ static int16_t read_table(ChannelData *chd, uint8_t val, int tab_idx)
return current;
}
static void chomp3(ChannelData *chd, int16_t *output, uint8_t val,
int tab_idx,
uint32_t numChannels)
static void chomp3(ChannelData *chd, int16_t *output, uint8_t val, int tab_idx)
{
int16_t current = read_table(chd, val, tab_idx);
@ -200,9 +198,7 @@ static void chomp3(ChannelData *chd, int16_t *output, uint8_t val,
*output = QT_8S_2_16S(current);
}
static void chomp6(ChannelData *chd, int16_t *output, uint8_t val,
int tab_idx,
uint32_t numChannels)
static void chomp6(ChannelData *chd, int16_t *output, uint8_t val, int tab_idx)
{
int16_t current = read_table(chd, val, tab_idx);
@ -222,8 +218,8 @@ static void chomp6(ChannelData *chd, int16_t *output, uint8_t val,
output[0] = QT_8S_2_16S(chd->previous + chd->prev2 -
((chd->prev2-current) >> 2));
output[numChannels] = QT_8S_2_16S(chd->previous + current +
((chd->prev2-current) >> 2));
output[1] = QT_8S_2_16S(chd->previous + current +
((chd->prev2-current) >> 2));
chd->prev2 = chd->previous;
chd->previous = current;
}
@ -234,7 +230,7 @@ static av_cold int mace_decode_init(AVCodecContext * avctx)
if (avctx->channels > 2)
return -1;
avctx->sample_fmt = AV_SAMPLE_FMT_S16;
avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
avcodec_get_frame_defaults(&ctx->frame);
avctx->coded_frame = &ctx->frame;
@ -247,7 +243,7 @@ static int mace_decode_frame(AVCodecContext *avctx, void *data,
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
int16_t *samples;
int16_t **samples;
MACEContext *ctx = avctx->priv_data;
int i, j, k, l, ret;
int is_mace3 = (avctx->codec_id == AV_CODEC_ID_MACE3);
@ -258,10 +254,10 @@ static int mace_decode_frame(AVCodecContext *avctx, void *data,
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
samples = (int16_t *)ctx->frame.data[0];
samples = (int16_t **)ctx->frame.extended_data;
for(i = 0; i < avctx->channels; i++) {
int16_t *output = samples + i;
int16_t *output = samples[i];
for (j=0; j < buf_size / (avctx->channels << is_mace3); j++)
for (k=0; k < (1 << is_mace3); k++) {
@ -273,13 +269,11 @@ static int mace_decode_frame(AVCodecContext *avctx, void *data,
for (l=0; l < 3; l++) {
if (is_mace3)
chomp3(&ctx->chd[i], output, val[1][l], l,
avctx->channels);
chomp3(&ctx->chd[i], output, val[1][l], l);
else
chomp6(&ctx->chd[i], output, val[0][l], l,
avctx->channels);
chomp6(&ctx->chd[i], output, val[0][l], l);
output += avctx->channels << (1-is_mace3);
output += 1 << (1-is_mace3);
}
}
}
@ -299,6 +293,8 @@ AVCodec ff_mace3_decoder = {
.decode = mace_decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("MACE (Macintosh Audio Compression/Expansion) 3:1"),
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
AV_SAMPLE_FMT_NONE },
};
AVCodec ff_mace6_decoder = {
@ -310,4 +306,6 @@ AVCodec ff_mace6_decoder = {
.decode = mace_decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("MACE (Macintosh Audio Compression/Expansion) 6:1"),
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
AV_SAMPLE_FMT_NONE },
};