#include <float.h>
#include "avcodec.h"
+#include "audio_frame_queue.h"
+#include "internal.h"
#include "put_bits.h"
#include "celp_filters.h"
#include "ra144.h"
+static av_cold int ra144_encode_close(AVCodecContext *avctx)
+{
+ RA144Context *ractx = avctx->priv_data;
+ ff_lpc_end(&ractx->lpc_ctx);
+ ff_af_queue_close(&ractx->afq);
+#if FF_API_OLD_ENCODE_AUDIO
+ av_freep(&avctx->coded_frame);
+#endif
+ return 0;
+}
+
+
static av_cold int ra144_encode_init(AVCodecContext * avctx)
{
RA144Context *ractx;
int ret;
- if (avctx->sample_fmt != AV_SAMPLE_FMT_S16) {
- av_log(avctx, AV_LOG_ERROR, "invalid sample format\n");
- return -1;
- }
if (avctx->channels != 1) {
av_log(avctx, AV_LOG_ERROR, "invalid number of channels: %d\n",
avctx->channels);
return -1;
}
avctx->frame_size = NBLOCKS * BLOCKSIZE;
+ avctx->delay = avctx->frame_size;
avctx->bit_rate = 8000;
ractx = avctx->priv_data;
ractx->lpc_coef[0] = ractx->lpc_tables[0];
ractx->avctx = avctx;
ret = ff_lpc_init(&ractx->lpc_ctx, avctx->frame_size, LPC_ORDER,
FF_LPC_TYPE_LEVINSON);
- return ret;
-}
+ if (ret < 0)
+ goto error;
+ ff_af_queue_init(avctx, &ractx->afq);
+
+#if FF_API_OLD_ENCODE_AUDIO
+ avctx->coded_frame = avcodec_alloc_frame();
+ if (!avctx->coded_frame) {
+ ret = AVERROR(ENOMEM);
+ goto error;
+ }
+#endif
-static av_cold int ra144_encode_close(AVCodecContext *avctx)
-{
- RA144Context *ractx = avctx->priv_data;
- ff_lpc_end(&ractx->lpc_ctx);
return 0;
+error:
+ ra144_encode_close(avctx);
+ return ret;
}
const int16_t *lpc_coefs, unsigned int rms,
PutBitContext *pb)
{
- float data[BLOCKSIZE], work[LPC_ORDER + BLOCKSIZE];
+ float data[BLOCKSIZE] = { 0 }, work[LPC_ORDER + BLOCKSIZE];
float coefs[LPC_ORDER];
float zero[BLOCKSIZE], cba[BLOCKSIZE], cb1[BLOCKSIZE], cb2[BLOCKSIZE];
int16_t cba_vect[BLOCKSIZE];
* Calculate the zero-input response of the LPC filter and subtract it from
* input data.
*/
- memset(data, 0, sizeof(data));
ff_celp_lp_synthesis_filterf(work + LPC_ORDER, coefs, data, BLOCKSIZE,
LPC_ORDER);
for (i = 0; i < BLOCKSIZE; i++) {
}
-static int ra144_encode_frame(AVCodecContext *avctx, uint8_t *frame,
- int buf_size, void *data)
+static int ra144_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
+ const AVFrame *frame, int *got_packet_ptr)
{
static const uint8_t sizes[LPC_ORDER] = {64, 32, 32, 16, 16, 8, 8, 8, 8, 4};
static const uint8_t bit_sizes[LPC_ORDER] = {6, 5, 5, 4, 4, 3, 3, 3, 3, 2};
- RA144Context *ractx;
+ RA144Context *ractx = avctx->priv_data;
PutBitContext pb;
int32_t lpc_data[NBLOCKS * BLOCKSIZE];
int32_t lpc_coefs[LPC_ORDER][MAX_LPC_ORDER];
int16_t block_coefs[NBLOCKS][LPC_ORDER];
int lpc_refl[LPC_ORDER]; /**< reflection coefficients of the frame */
unsigned int refl_rms[NBLOCKS]; /**< RMS of the reflection coefficients */
+ const int16_t *samples = frame ? (const int16_t *)frame->data[0] : NULL;
int energy = 0;
- int i, idx;
+ int i, idx, ret;
- if (buf_size < FRAMESIZE) {
- av_log(avctx, AV_LOG_ERROR, "output buffer too small\n");
+ if (ractx->last_frame)
return 0;
+
+ if ((ret = ff_alloc_packet(avpkt, FRAMESIZE))) {
+ av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
+ return ret;
}
- ractx = avctx->priv_data;
/**
* Since the LPC coefficients are calculated on a frame centered over the
lpc_data[i] = ractx->curr_block[BLOCKSIZE + BLOCKSIZE / 2 + i];
energy += (lpc_data[i] * lpc_data[i]) >> 4;
}
- for (i = 2 * BLOCKSIZE + BLOCKSIZE / 2; i < NBLOCKS * BLOCKSIZE; i++) {
- lpc_data[i] = *((int16_t *)data + i - 2 * BLOCKSIZE - BLOCKSIZE / 2) >>
- 2;
- energy += (lpc_data[i] * lpc_data[i]) >> 4;
+ if (frame) {
+ int j;
+ for (j = 0; j < frame->nb_samples && i < NBLOCKS * BLOCKSIZE; i++, j++) {
+ lpc_data[i] = samples[j] >> 2;
+ energy += (lpc_data[i] * lpc_data[i]) >> 4;
+ }
}
+ if (i < NBLOCKS * BLOCKSIZE)
+ memset(&lpc_data[i], 0, (NBLOCKS * BLOCKSIZE - i) * sizeof(*lpc_data));
energy = ff_energy_tab[quantize(ff_t_sqrt(energy >> 5) >> 10, ff_energy_tab,
32)];
memset(lpc_refl, 0, sizeof(lpc_refl));
}
}
- init_put_bits(&pb, frame, buf_size);
+ init_put_bits(&pb, avpkt->data, avpkt->size);
for (i = 0; i < LPC_ORDER; i++) {
idx = quantize(lpc_refl[i], ff_lpc_refl_cb[i], sizes[i]);
put_bits(&pb, bit_sizes[i], idx);
ractx->old_energy = energy;
ractx->lpc_refl_rms[1] = ractx->lpc_refl_rms[0];
FFSWAP(unsigned int *, ractx->lpc_coef[0], ractx->lpc_coef[1]);
- for (i = 0; i < NBLOCKS * BLOCKSIZE; i++)
- ractx->curr_block[i] = *((int16_t *)data + i) >> 2;
- return FRAMESIZE;
+
+ /* copy input samples to current block for processing in next call */
+ i = 0;
+ if (frame) {
+ for (; i < frame->nb_samples; i++)
+ ractx->curr_block[i] = samples[i] >> 2;
+
+ if ((ret = ff_af_queue_add(&ractx->afq, frame) < 0))
+ return ret;
+ } else
+ ractx->last_frame = 1;
+ memset(&ractx->curr_block[i], 0,
+ (NBLOCKS * BLOCKSIZE - i) * sizeof(*ractx->curr_block));
+
+ /* Get the next frame pts/duration */
+ ff_af_queue_remove(&ractx->afq, avctx->frame_size, &avpkt->pts,
+ &avpkt->duration);
+
+ avpkt->size = FRAMESIZE;
+ *got_packet_ptr = 1;
+ return 0;
}
AVCodec ff_ra_144_encoder = {
.name = "real_144",
.type = AVMEDIA_TYPE_AUDIO,
- .id = CODEC_ID_RA_144,
+ .id = AV_CODEC_ID_RA_144,
.priv_data_size = sizeof(RA144Context),
.init = ra144_encode_init,
- .encode = ra144_encode_frame,
+ .encode2 = ra144_encode_frame,
.close = ra144_encode_close,
+ .capabilities = CODEC_CAP_DELAY | CODEC_CAP_SMALL_LAST_FRAME,
.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
AV_SAMPLE_FMT_NONE },
.long_name = NULL_IF_CONFIG_SMALL("RealAudio 1.0 (14.4K)"),
projects / ffmpeg / blobdiff