Merge remote-tracking branch 'qatar/master'

[ffmpeg] / libavcodec / mpegaudiodec.c

diff --git a/libavcodec/mpegaudiodec.c b/libavcodec/mpegaudiodec.c
index 6c088626fc74838b041984dbc0df92292d1f58d1..c2d8dd5cf6e0856868f593536d4113f6ab6768a9 100644 (file)
--- a/libavcodec/mpegaudiodec.c
+++ b/libavcodec/mpegaudiodec.c
@@ -2,20 +2,20 @@
  * MPEG Audio decoder
  * Copyright (c) 2001, 2002 Fabrice Bellard
  *
- * This file is part of Libav.
+ * This file is part of FFmpeg.
  *
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -29,6 +29,7 @@
 #include "get_bits.h"
 #include "mathops.h"
 #include "mpegaudiodsp.h"
+#include "dsputil.h"
 
 /*
  * TODO:
@@ -40,6 +41,7 @@
 
 #define BACKSTEP_SIZE 512
 #define EXTRABYTES 24
+#define LAST_BUF_SIZE 2 * BACKSTEP_SIZE + EXTRABYTES
 
 /* layer 3 "granule" */
 typedef struct GranuleDef {
@@ -63,7 +65,7 @@ typedef struct GranuleDef {
 
 typedef struct MPADecodeContext {
     MPA_DECODE_HEADER
-    uint8_t last_buf[2 * BACKSTEP_SIZE + EXTRABYTES];
+    uint8_t last_buf[LAST_BUF_SIZE];
     int last_buf_size;
     /* next header (used in free format parsing) */
     uint32_t free_format_next_header;
@@ -79,6 +81,7 @@ typedef struct MPADecodeContext {
     int err_recognition;
     AVCodecContext* avctx;
     MPADSPContext mpadsp;
+    DSPContext dsp;
     AVFrame frame;
 } MPADecodeContext;
 
@@ -301,11 +304,8 @@ static av_cold void decode_init_static(void)
     for (i = 1; i < 16; i++) {
         const HuffTable *h = &mpa_huff_tables[i];
         int xsize, x, y;
-        uint8_t  tmp_bits [512];
-        uint16_t tmp_codes[512];
-
-        memset(tmp_bits , 0, sizeof(tmp_bits ));
-        memset(tmp_codes, 0, sizeof(tmp_codes));
+        uint8_t  tmp_bits [512] = { 0 };
+        uint16_t tmp_codes[512] = { 0 };
 
         xsize = h->xsize;
 
@@ -431,6 +431,7 @@ static av_cold int decode_init(AVCodecContext * avctx)
     s->avctx = avctx;
 
     ff_mpadsp_init(&s->mpadsp);
+    ff_dsputil_init(&s->dsp, avctx);
 
     avctx->sample_fmt= OUT_FMT;
     s->err_recognition = avctx->err_recognition;
@@ -955,7 +956,7 @@ static int huffman_decode(MPADecodeContext *s, GranuleDef *g,
                 s_index -= 4;
                 skip_bits_long(&s->gb, last_pos - pos);
                 av_log(s->avctx, AV_LOG_INFO, "overread, skip %d enddists: %d %d\n", last_pos - pos, end_pos-pos, end_pos2-pos);
-                if(s->err_recognition & AV_EF_BITSTREAM)
+                if(s->err_recognition & (AV_EF_BITSTREAM|AV_EF_COMPLIANT))
                     s_index=0;
                 break;
             }
@@ -985,10 +986,10 @@ static int huffman_decode(MPADecodeContext *s, GranuleDef *g,
     /* skip extension bits */
     bits_left = end_pos2 - get_bits_count(&s->gb);
 //av_log(NULL, AV_LOG_ERROR, "left:%d buf:%p\n", bits_left, s->in_gb.buffer);
-    if (bits_left < 0 && (s->err_recognition & AV_EF_BUFFER)) {
+    if (bits_left < 0 && (s->err_recognition & (AV_EF_BUFFER|AV_EF_COMPLIANT))) {
         av_log(s->avctx, AV_LOG_ERROR, "bits_left=%d\n", bits_left);
         s_index=0;
-    } else if (bits_left > 0 && (s->err_recognition & AV_EF_BUFFER)) {
+    } else if (bits_left > 0 && (s->err_recognition & (AV_EF_BUFFER|AV_EF_AGGRESSIVE))) {
         av_log(s->avctx, AV_LOG_ERROR, "bits_left=%d\n", bits_left);
         s_index = 0;
     }
@@ -1152,6 +1153,9 @@ found2:
         /* ms stereo ONLY */
         /* NOTE: the 1/sqrt(2) normalization factor is included in the
            global gain */
+#if CONFIG_FLOAT
+       s-> dsp.butterflies_float(g0->sb_hybrid, g1->sb_hybrid, 576);
+#else
         tab0 = g0->sb_hybrid;
         tab1 = g1->sb_hybrid;
         for (i = 0; i < 576; i++) {
@@ -1160,6 +1164,7 @@ found2:
             tab0[i] = tmp0 + tmp1;
             tab1[i] = tmp0 - tmp1;
         }
+#endif
     }
 }
 
@@ -1388,7 +1393,7 @@ static int mp_decode_layer3(MPADecodeContext *s)
         s->in_gb = s->gb;
         init_get_bits(&s->gb, s->last_buf, s->last_buf_size*8);
 #if !UNCHECKED_BITSTREAM_READER
-        s->gb.size_in_bits_plus8 += extrasize * 8;
+        s->gb.size_in_bits_plus8 += FFMAX(extrasize, LAST_BUF_SIZE - s->last_buf_size) * 8;
 #endif
         s->last_buf_size <<= 3;
         for (gr = 0; gr < nb_granules && (s->last_buf_size >> 3) < main_data_begin; gr++) {
@@ -1651,13 +1656,12 @@ static int decode_frame(AVCodecContext * avctx, void *data, int *got_frame_ptr,
     avctx->channel_layout = s->nb_channels == 1 ? AV_CH_LAYOUT_MONO : AV_CH_LAYOUT_STEREO;
     if (!avctx->bit_rate)
         avctx->bit_rate = s->bit_rate;
-    avctx->sub_id = s->layer;
 
     if (s->frame_size <= 0 || s->frame_size > buf_size) {
         av_log(avctx, AV_LOG_ERROR, "incomplete frame\n");
         return AVERROR_INVALIDDATA;
-    } else if (s->frame_size < buf_size) {
-        av_log(avctx, AV_LOG_ERROR, "incorrect frame size\n");
+    }else if(s->frame_size < buf_size){
+        av_log(avctx, AV_LOG_DEBUG, "incorrect frame size - multiple frames in buffer?\n");
         buf_size= s->frame_size;
     }
 
@@ -1724,7 +1728,6 @@ static int decode_frame_adu(AVCodecContext *avctx, void *data,
     avctx->channels    = s->nb_channels;
     if (!avctx->bit_rate)
         avctx->bit_rate = s->bit_rate;
-    avctx->sub_id = s->layer;
 
     s->frame_size = len;