X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fg722dec.c;h=07af0a082a5cbe1eefbdd7ef93806f59817a6c81;hb=ac12486714b48f9bd5d9167f90b77c936751d6ef;hp=50a224ba10702e621c67a32c845ae027cc1c3945;hpb=6fcbb0f553b8e45993e2746d3763adc2faec0781;p=ffmpeg

diff --git a/libavcodec/g722dec.c b/libavcodec/g722dec.c
index 50a224ba107..07af0a082a5 100644
--- a/libavcodec/g722dec.c
+++ b/libavcodec/g722dec.c
@@ -34,15 +34,18 @@
  *       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 }
 };
 
@@ -57,18 +60,15 @@ static av_cold int g722_decode_init(AVCodecContext * avctx)
 {
     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;
 }
@@ -80,54 +80,54 @@ static const int16_t low_inv_quant5[32] = {
      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 >> 12);
-        *out_buf++ = av_clip_int16(xout2 >> 12);
+        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]));
@@ -135,20 +135,19 @@ static int g722_decode_frame(AVCodecContext *avctx, void *data,
         }
     }
 
-    *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,
 };