truespeech: align buffer

[ffmpeg] / libavcodec / truespeech.c

diff --git a/libavcodec/truespeech.c b/libavcodec/truespeech.c
index 72d828a9cb068b5a5a60a69f15b6cb09098342ef..66ca4617410c71943766c01644745d562c2d6ef2 100644 (file)
--- a/libavcodec/truespeech.c
+++ b/libavcodec/truespeech.c
@@ -34,9 +34,10 @@
  * TrueSpeech decoder context
  */
 typedef struct {
+    AVFrame frame;
     DSPContext dsp;
     /* input data */
-    uint8_t buffer[32];
+    DECLARE_ALIGNED(16, uint8_t, buffer)[32];
     int16_t vector[8];  ///< input vector: 5/5/4/4/4/3/3/3
     int offset1[2];     ///< 8-bit value, used in one copying offset
     int offset2[4];     ///< 7-bit value, encodes offsets for copying and for two-point filter
@@ -69,6 +70,9 @@ static av_cold int truespeech_decode_init(AVCodecContext * avctx)
 
     dsputil_init(&c->dsp, avctx);
 
+    avcodec_get_frame_defaults(&c->frame);
+    avctx->coded_frame = &c->frame;
+
     return 0;
 }
 
@@ -127,7 +131,7 @@ static void truespeech_correlate_filter(TSContext *dec)
 
     for(i = 0; i < 8; i++){
         if(i > 0){
-            memcpy(tmp, dec->cvector, i * 2);
+            memcpy(tmp, dec->cvector, i * sizeof(*tmp));
             for(j = 0; j < i; j++)
                 dec->cvector[j] = ((tmp[i - j - 1] * dec->vector[i]) +
                                    (dec->cvector[j] << 15) + 0x4000) >> 15;
@@ -169,12 +173,13 @@ static void truespeech_apply_twopoint_filter(TSContext *dec, int quart)
 
     t = dec->offset2[quart];
     if(t == 127){
-        memset(dec->newvec, 0, 60 * 2);
+        memset(dec->newvec, 0, 60 * sizeof(*dec->newvec));
         return;
     }
     for(i = 0; i < 146; i++)
         tmp[i] = dec->filtbuf[i];
     off = (t / 25) + dec->offset1[quart >> 1] + 18;
+    off = av_clip(off, 0, 145);
     ptr0 = tmp + 145 - off;
     ptr1 = tmp + 146;
     filter = (const int16_t*)ts_order2_coeffs + (t % 25) * 2;
@@ -194,7 +199,7 @@ static void truespeech_place_pulses(TSContext *dec, int16_t *out, int quart)
     int16_t *ptr2;
     int coef;
 
-    memset(out, 0, 60 * 2);
+    memset(out, 0, 60 * sizeof(*out));
     for(i = 0; i < 7; i++) {
         t = dec->pulseval[quart] & 3;
         dec->pulseval[quart] >>= 2;
@@ -233,8 +238,7 @@ static void truespeech_update_filters(TSContext *dec, int16_t *out, int quart)
 {
     int i;
 
-    for(i = 0; i < 86; i++)
-        dec->filtbuf[i] = dec->filtbuf[i + 60];
+    memmove(dec->filtbuf, &dec->filtbuf[60], 86 * sizeof(*dec->filtbuf));
     for(i = 0; i < 60; i++){
         dec->filtbuf[i + 86] = out[i] + dec->newvec[i] - (dec->newvec[i] >> 3);
         out[i] += dec->newvec[i];
@@ -300,17 +304,16 @@ static void truespeech_save_prevvec(TSContext *c)
         c->prevfilt[i] = c->cvector[i];
 }
 
-static int truespeech_decode_frame(AVCodecContext *avctx,
-                void *data, int *data_size,
-                AVPacket *avpkt)
+static int truespeech_decode_frame(AVCodecContext *avctx, void *data,
+                                   int *got_frame_ptr, AVPacket *avpkt)
 {
     const uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
     TSContext *c = avctx->priv_data;
 
     int i, j;
-    short *samples = data;
-    int iterations, out_size;
+    int16_t *samples;
+    int iterations, ret;
 
     iterations = buf_size / 32;
 
@@ -320,13 +323,15 @@ static int truespeech_decode_frame(AVCodecContext *avctx,
         return -1;
     }
 
-    out_size = iterations * 240 * av_get_bytes_per_sample(avctx->sample_fmt);
-    if (*data_size < out_size) {
-        av_log(avctx, AV_LOG_ERROR, "Output buffer is too small\n");
-        return AVERROR(EINVAL);
+    /* get output buffer */
+    c->frame.nb_samples = iterations * 240;
+    if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
+        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+        return ret;
     }
+    samples = (int16_t *)c->frame.data[0];
 
-    memset(samples, 0, out_size);
+    memset(samples, 0, iterations * 240 * sizeof(*samples));
 
     for(j = 0; j < iterations; j++) {
         truespeech_read_frame(c, buf);
@@ -346,7 +351,8 @@ static int truespeech_decode_frame(AVCodecContext *avctx,
         truespeech_save_prevvec(c);
     }
 
-    *data_size = out_size;
+    *got_frame_ptr   = 1;
+    *(AVFrame *)data = c->frame;
 
     return buf_size;
 }
@@ -358,5 +364,6 @@ AVCodec ff_truespeech_decoder = {
     .priv_data_size = sizeof(TSContext),
     .init           = truespeech_decode_init,
     .decode         = truespeech_decode_frame,
+    .capabilities   = CODEC_CAP_DR1,
     .long_name = NULL_IF_CONFIG_SMALL("DSP Group TrueSpeech"),
 };