* respectively of each byte are ignored.
*/
+#include "libavutil/channel_layout.h"
+#include "libavutil/opt.h"
+
#include "avcodec.h"
-#include "get_bits.h"
+#include "bitstream.h"
#include "g722.h"
-#include "libavutil/opt.h"
+#include "internal.h"
#define OFFSET(x) offsetof(G722Context, x)
#define AD AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM
static const AVOption options[] = {
- { "bits_per_codeword", "Bits per G722 codeword", OFFSET(bits_per_codeword), AV_OPT_TYPE_FLAGS, { 8 }, 6, 8, AD },
+ { "bits_per_codeword", "Bits per G722 codeword", OFFSET(bits_per_codeword), AV_OPT_TYPE_INT, { .i64 = 8 }, 6, 8, AD },
{ NULL }
};
{
G722Context *c = avctx->priv_data;
- if (avctx->channels != 1) {
- av_log(avctx, AV_LOG_ERROR, "Only mono tracks are allowed.\n");
- return AVERROR_INVALIDDATA;
- }
- avctx->sample_fmt = AV_SAMPLE_FMT_S16;
+ avctx->channels = 1;
+ avctx->channel_layout = AV_CH_LAYOUT_MONO;
+ avctx->sample_fmt = AV_SAMPLE_FMT_S16;
c->band[0].scale_factor = 8;
c->band[1].scale_factor = 2;
c->prev_samples_pos = 22;
- avcodec_get_frame_defaults(&c->frame);
- avctx->coded_frame = &c->frame;
+ ff_g722dsp_init(&c->dsp);
return 0;
}
587, 473, 370, 276, 190, 110, 35, -35
};
-static const int16_t *low_inv_quants[3] = { ff_g722_low_inv_quant6,
- low_inv_quant5,
- ff_g722_low_inv_quant4 };
+static const int16_t * const low_inv_quants[3] = { ff_g722_low_inv_quant6,
+ low_inv_quant5,
+ ff_g722_low_inv_quant4 };
static int g722_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *avpkt)
{
G722Context *c = avctx->priv_data;
+ AVFrame *frame = data;
int16_t *out_buf;
int j, ret;
const int skip = 8 - c->bits_per_codeword;
const int16_t *quantizer_table = low_inv_quants[skip];
- GetBitContext gb;
+ BitstreamContext bc;
/* get output buffer */
- c->frame.nb_samples = avpkt->size * 2;
- if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
+ frame->nb_samples = avpkt->size * 2;
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
- out_buf = (int16_t *)c->frame.data[0];
+ out_buf = (int16_t *)frame->data[0];
- init_get_bits(&gb, avpkt->data, avpkt->size * 8);
+ bitstream_init8(&bc, avpkt->data, avpkt->size);
for (j = 0; j < avpkt->size; j++) {
int ilow, ihigh, rlow, rhigh, dhigh;
- int xout1, xout2;
+ int xout[2];
- ihigh = get_bits(&gb, 2);
- ilow = get_bits(&gb, 6 - skip);
- skip_bits(&gb, skip);
+ ihigh = bitstream_read(&bc, 2);
+ ilow = bitstream_read(&bc, 6 - skip);
+ bitstream_skip(&bc, skip);
- rlow = av_clip((c->band[0].scale_factor * quantizer_table[ilow] >> 10)
- + c->band[0].s_predictor, -16384, 16383);
+ rlow = av_clip_intp2((c->band[0].scale_factor * quantizer_table[ilow] >> 10)
+ + c->band[0].s_predictor, 14);
ff_g722_update_low_predictor(&c->band[0], ilow >> (2 - skip));
dhigh = c->band[1].scale_factor * ff_g722_high_inv_quant[ihigh] >> 10;
- rhigh = av_clip(dhigh + c->band[1].s_predictor, -16384, 16383);
+ rhigh = av_clip_intp2(dhigh + c->band[1].s_predictor, 14);
ff_g722_update_high_predictor(&c->band[1], dhigh, ihigh);
c->prev_samples[c->prev_samples_pos++] = rlow + rhigh;
c->prev_samples[c->prev_samples_pos++] = rlow - rhigh;
- ff_g722_apply_qmf(c->prev_samples + c->prev_samples_pos - 24,
- &xout1, &xout2);
- *out_buf++ = av_clip_int16(xout1 >> 11);
- *out_buf++ = av_clip_int16(xout2 >> 11);
+ c->dsp.apply_qmf(c->prev_samples + c->prev_samples_pos - 24, xout);
+ *out_buf++ = av_clip_int16(xout[0] >> 11);
+ *out_buf++ = av_clip_int16(xout[1] >> 11);
if (c->prev_samples_pos >= PREV_SAMPLES_BUF_SIZE) {
memmove(c->prev_samples, c->prev_samples + c->prev_samples_pos - 22,
22 * sizeof(c->prev_samples[0]));
}
}
- *got_frame_ptr = 1;
- *(AVFrame *)data = c->frame;
+ *got_frame_ptr = 1;
return avpkt->size;
}
AVCodec ff_adpcm_g722_decoder = {
.name = "g722",
+ .long_name = NULL_IF_CONFIG_SMALL("G.722 ADPCM"),
.type = AVMEDIA_TYPE_AUDIO,
- .id = CODEC_ID_ADPCM_G722,
+ .id = AV_CODEC_ID_ADPCM_G722,
.priv_data_size = sizeof(G722Context),
.init = g722_decode_init,
.decode = g722_decode_frame,
- .capabilities = CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("G.722 ADPCM"),
+ .capabilities = AV_CODEC_CAP_DR1,
.priv_class = &g722_decoder_class,
};