* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <inttypes.h>
+
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/opt.h"
+#include "apedsp.h"
#include "avcodec.h"
-#include "dsputil.h"
+#include "bswapdsp.h"
#include "bytestream.h"
#include "internal.h"
#include "get_bits.h"
typedef struct APEContext {
AVClass *class; ///< class for AVOptions
AVCodecContext *avctx;
- DSPContext dsp;
+ BswapDSPContext bdsp;
+ APEDSPContext adsp;
int channels;
int samples; ///< samples left to decode in current frame
int bps;
static void predictor_decode_mono_3950(APEContext *ctx, int count);
static void predictor_decode_stereo_3950(APEContext *ctx, int count);
-// TODO: dsputilize
-
static av_cold int ape_decode_close(AVCodecContext *avctx)
{
APEContext *s = avctx->priv_data;
return 0;
}
+static int32_t scalarproduct_and_madd_int16_c(int16_t *v1, const int16_t *v2,
+ const int16_t *v3,
+ int order, int mul)
+{
+ int res = 0;
+
+ while (order--) {
+ res += *v1 * *v2++;
+ *v1++ += mul * *v3++;
+ }
+ return res;
+}
+
static av_cold int ape_decode_init(AVCodecContext *avctx)
{
APEContext *s = avctx->priv_data;
s->predictor_decode_stereo = predictor_decode_stereo_3950;
}
- ff_dsputil_init(&s->dsp, avctx);
+ s->adsp.scalarproduct_and_madd_int16 = scalarproduct_and_madd_int16_c;
+
+ if (ARCH_ARM)
+ ff_apedsp_init_arm(&s->adsp);
+ if (ARCH_PPC)
+ ff_apedsp_init_ppc(&s->adsp);
+ if (ARCH_X86)
+ ff_apedsp_init_x86(&s->adsp);
+
+ ff_bswapdsp_init(&s->bdsp);
avctx->channel_layout = (avctx->channels==2) ? AV_CH_LAYOUT_STEREO : AV_CH_LAYOUT_MONO;
return 0;
}
/**
- * Calculate culmulative frequency for next symbol. Does NO update!
+ * Calculate cumulative frequency for next symbol. Does NO update!
* @param ctx decoder context
* @param tot_f is the total frequency or (code_value)1<<shift
- * @return the culmulative frequency
+ * @return the cumulative frequency
*/
static inline int range_decode_culfreq(APEContext *ctx, int tot_f)
{
int ksummax, ksummin;
rice->ksum = 0;
- for (i = 0; i < 5; i++) {
+ for (i = 0; i < FFMIN(blockstodecode, 5); i++) {
out[i] = get_rice_ook(&ctx->gb, 10);
rice->ksum += out[i];
}
rice->k = av_log2(rice->ksum / 10) + 1;
- for (; i < 64; i++) {
+ for (; i < FFMIN(blockstodecode, 64); i++) {
out[i] = get_rice_ook(&ctx->gb, rice->k);
rice->ksum += out[i];
rice->k = av_log2(rice->ksum / ((i + 1) * 2)) + 1;
{
int i, j;
int32_t dotprod, sign;
- int32_t coeffs[8], delay[8];
+ int32_t coeffs[8] = { 0 }, delay[8] = { 0 };
- memset(coeffs, 0, sizeof(coeffs));
- memset(delay, 0, sizeof(delay));
for (i = 0; i < length; i++) {
dotprod = 0;
sign = APESIGN(buffer[i]);
while (count--) {
/* round fixedpoint scalar product */
- res = ctx->dsp.scalarproduct_and_madd_int16(f->coeffs, f->delay - order,
- f->adaptcoeffs - order,
- order, APESIGN(*data));
+ res = ctx->adsp.scalarproduct_and_madd_int16(f->coeffs,
+ f->delay - order,
+ f->adaptcoeffs - order,
+ order, APESIGN(*data));
res = (res + (1 << (fracbits - 1))) >> fracbits;
res += *data;
*data++ = res;
/* Update the adaption coefficients */
absres = FFABS(res);
if (absres)
- *f->adaptcoeffs = ((res & (-1<<31)) ^ (-1<<30)) >>
- (25 + (absres <= f->avg*3) + (absres <= f->avg*4/3));
+ *f->adaptcoeffs = APESIGN(res) *
+ (8 << ((absres > f->avg * 3) + (absres > f->avg * 4 / 3)));
+ /* equivalent to the following code
+ if (absres <= f->avg * 4 / 3)
+ *f->adaptcoeffs = APESIGN(res) * 8;
+ else if (absres <= f->avg * 3)
+ *f->adaptcoeffs = APESIGN(res) * 16;
+ else
+ *f->adaptcoeffs = APESIGN(res) * 32;
+ */
else
*f->adaptcoeffs = 0;
int32_t *sample24;
int i, ch, ret;
int blockstodecode;
- int bytes_used = 0;
/* this should never be negative, but bad things will happen if it is, so
check it just to make sure. */
av_fast_malloc(&s->data, &s->data_size, buf_size);
if (!s->data)
return AVERROR(ENOMEM);
- s->dsp.bswap_buf((uint32_t*)s->data, (const uint32_t*)buf, buf_size >> 2);
+ s->bdsp.bswap_buf((uint32_t *) s->data, (const uint32_t *) buf,
+ buf_size >> 2);
memset(s->data + (buf_size & ~3), 0, buf_size & 3);
s->ptr = s->data;
s->data_end = s->data + buf_size;
}
if (!nblocks || nblocks > INT_MAX) {
- av_log(avctx, AV_LOG_ERROR, "Invalid sample count: %u.\n", nblocks);
+ av_log(avctx, AV_LOG_ERROR, "Invalid sample count: %"PRIu32".\n",
+ nblocks);
return AVERROR_INVALIDDATA;
}
s->samples = nblocks;
return AVERROR_INVALIDDATA;
}
- bytes_used = avpkt->size;
}
if (!s->data) {
*got_frame_ptr = 1;
- return bytes_used;
+ return (s->samples == 0) ? avpkt->size : 0;
}
static void ape_flush(AVCodecContext *avctx)
AVCodec ff_ape_decoder = {
.name = "ape",
+ .long_name = NULL_IF_CONFIG_SMALL("Monkey's Audio"),
.type = AVMEDIA_TYPE_AUDIO,
.id = AV_CODEC_ID_APE,
.priv_data_size = sizeof(APEContext),
.init = ape_decode_init,
.close = ape_decode_close,
.decode = ape_decode_frame,
- .capabilities = CODEC_CAP_SUBFRAMES | CODEC_CAP_DELAY | CODEC_CAP_DR1,
+ .capabilities = AV_CODEC_CAP_SUBFRAMES | AV_CODEC_CAP_DELAY |
+ AV_CODEC_CAP_DR1,
.flush = ape_flush,
- .long_name = NULL_IF_CONFIG_SMALL("Monkey's Audio"),
.sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_U8P,
AV_SAMPLE_FMT_S16P,
AV_SAMPLE_FMT_S32P,
projects / ffmpeg / blobdiff