Replace Subversion revisions in comments by Git hashes.

[ffmpeg] / libavcodec / aacdec.c

diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index a4fe2ee2cc06c0d47886048ae940435167151f33..4d002edf6a1322948e330159e37ab6d2a9f15c54 100644 (file)
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -98,6 +98,7 @@
 #include "aacsbr.h"
 #include "mpeg4audio.h"
 #include "aacadtsdec.h"
+#include "libavutil/intfloat.h"
 
 #include <assert.h>
 #include <errno.h>
@@ -108,11 +109,6 @@
 #   include "arm/aac.h"
 #endif
 
-union float754 {
-    float f;
-    uint32_t i;
-};
-
 static VLC vlc_scalefactors;
 static VLC vlc_spectral[11];
 
@@ -707,16 +703,13 @@ static void decode_ltp(AACContext *ac, LongTermPrediction *ltp,
 
 /**
  * Decode Individual Channel Stream info; reference: table 4.6.
- *
- * @param   common_window   Channels have independent [0], or shared [1], Individual Channel Stream information.
  */
 static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics,
-                           GetBitContext *gb, int common_window)
+                           GetBitContext *gb)
 {
     if (get_bits1(gb)) {
         av_log(ac->avctx, AV_LOG_ERROR, "Reserved bit set.\n");
-        memset(ics, 0, sizeof(IndividualChannelStream));
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     ics->window_sequence[1] = ics->window_sequence[0];
     ics->window_sequence[0] = get_bits(gb, 2);
@@ -751,13 +744,11 @@ static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics,
         if (ics->predictor_present) {
             if (ac->m4ac.object_type == AOT_AAC_MAIN) {
                 if (decode_prediction(ac, ics, gb)) {
-                    memset(ics, 0, sizeof(IndividualChannelStream));
-                    return -1;
+                    return AVERROR_INVALIDDATA;
                 }
             } else if (ac->m4ac.object_type == AOT_AAC_LC) {
                 av_log(ac->avctx, AV_LOG_ERROR, "Prediction is not allowed in AAC-LC.\n");
-                memset(ics, 0, sizeof(IndividualChannelStream));
-                return -1;
+                return AVERROR_INVALIDDATA;
             } else {
                 if ((ics->ltp.present = get_bits(gb, 1)))
                     decode_ltp(ac, &ics->ltp, gb, ics->max_sfb);
@@ -769,8 +760,7 @@ static int decode_ics_info(AACContext *ac, IndividualChannelStream *ics,
         av_log(ac->avctx, AV_LOG_ERROR,
                "Number of scalefactor bands in group (%d) exceeds limit (%d).\n",
                ics->max_sfb, ics->num_swb);
-        memset(ics, 0, sizeof(IndividualChannelStream));
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     return 0;
@@ -1004,7 +994,7 @@ static inline float *VMUL4(float *dst, const float *v, unsigned idx,
 static inline float *VMUL2S(float *dst, const float *v, unsigned idx,
                             unsigned sign, const float *scale)
 {
-    union float754 s0, s1;
+    union av_intfloat32 s0, s1;
 
     s0.f = s1.f = *scale;
     s0.i ^= sign >> 1 << 31;
@@ -1022,8 +1012,8 @@ static inline float *VMUL4S(float *dst, const float *v, unsigned idx,
                             unsigned sign, const float *scale)
 {
     unsigned nz = idx >> 12;
-    union float754 s = { .f = *scale };
-    union float754 t;
+    union av_intfloat32 s = { .f = *scale };
+    union av_intfloat32 t;
 
     t.i = s.i ^ (sign & 1U<<31);
     *dst++ = v[idx    & 3] * t.f;
@@ -1272,7 +1262,7 @@ static int decode_spectrum_and_dequant(AACContext *ac, float coef[1024],
 
 static av_always_inline float flt16_round(float pf)
 {
-    union float754 tmp;
+    union av_intfloat32 tmp;
     tmp.f = pf;
     tmp.i = (tmp.i + 0x00008000U) & 0xFFFF0000U;
     return tmp.f;
@@ -1280,7 +1270,7 @@ static av_always_inline float flt16_round(float pf)
 
 static av_always_inline float flt16_even(float pf)
 {
-    union float754 tmp;
+    union av_intfloat32 tmp;
     tmp.f = pf;
     tmp.i = (tmp.i + 0x00007FFFU + (tmp.i & 0x00010000U >> 16)) & 0xFFFF0000U;
     return tmp.f;
@@ -1288,7 +1278,7 @@ static av_always_inline float flt16_even(float pf)
 
 static av_always_inline float flt16_trunc(float pf)
 {
-    union float754 pun;
+    union av_intfloat32 pun;
     pun.f = pf;
     pun.i &= 0xFFFF0000U;
     return pun.f;
@@ -1375,8 +1365,8 @@ static int decode_ics(AACContext *ac, SingleChannelElement *sce,
     global_gain = get_bits(gb, 8);
 
     if (!common_window && !scale_flag) {
-        if (decode_ics_info(ac, ics, gb, 0) < 0)
-            return -1;
+        if (decode_ics_info(ac, ics, gb) < 0)
+            return AVERROR_INVALIDDATA;
     }
 
     if (decode_band_types(ac, sce->band_type, sce->band_type_run_end, gb, ics) < 0)
@@ -1492,8 +1482,8 @@ static int decode_cpe(AACContext *ac, GetBitContext *gb, ChannelElement *cpe)
 
     common_window = get_bits1(gb);
     if (common_window) {
-        if (decode_ics_info(ac, &cpe->ch[0].ics, gb, 1))
-            return -1;
+        if (decode_ics_info(ac, &cpe->ch[0].ics, gb))
+            return AVERROR_INVALIDDATA;
         i = cpe->ch[1].ics.use_kb_window[0];
         cpe->ch[1].ics = cpe->ch[0].ics;
         cpe->ch[1].ics.use_kb_window[1] = i;
@@ -2319,8 +2309,9 @@ static inline uint32_t latm_get_value(GetBitContext *b)
 static int latm_decode_audio_specific_config(struct LATMContext *latmctx,
                                              GetBitContext *gb, int asclen)
 {
-    AVCodecContext *avctx = latmctx->aac_ctx.avctx;
-    MPEG4AudioConfig m4ac;
+    AACContext *ac        = &latmctx->aac_ctx;
+    AVCodecContext *avctx = ac->avctx;
+    MPEG4AudioConfig m4ac = {0};
     int config_start_bit  = get_bits_count(gb);
     int sync_extension    = 0;
     int bits_consumed, esize;
@@ -2335,18 +2326,23 @@ static int latm_decode_audio_specific_config(struct LATMContext *latmctx,
         av_log_missing_feature(latmctx->aac_ctx.avctx, "audio specific "
                                "config not byte aligned.\n", 1);
         return AVERROR_INVALIDDATA;
-    } else {
-        bits_consumed =
-            decode_audio_specific_config(NULL, avctx, &m4ac,
+    }
+    bits_consumed = decode_audio_specific_config(NULL, avctx, &m4ac,
                                          gb->buffer + (config_start_bit / 8),
                                          asclen, sync_extension);
 
-        if (bits_consumed < 0)
-            return AVERROR_INVALIDDATA;
+    if (bits_consumed < 0)
+        return AVERROR_INVALIDDATA;
+
+    if (ac->m4ac.sample_rate != m4ac.sample_rate ||
+        ac->m4ac.chan_config != m4ac.chan_config) {
+
+        av_log(avctx, AV_LOG_INFO, "audio config changed\n");
+        latmctx->initialized = 0;
 
         esize = (bits_consumed+7) / 8;
 
-        if (avctx->extradata_size <= esize) {
+        if (avctx->extradata_size < esize) {
             av_free(avctx->extradata);
             avctx->extradata = av_malloc(esize + FF_INPUT_BUFFER_PADDING_SIZE);
             if (!avctx->extradata)
@@ -2356,9 +2352,8 @@ static int latm_decode_audio_specific_config(struct LATMContext *latmctx,
         avctx->extradata_size = esize;
         memcpy(avctx->extradata, gb->buffer + (config_start_bit/8), esize);
         memset(avctx->extradata+esize, 0, FF_INPUT_BUFFER_PADDING_SIZE);
-
-        skip_bits_long(gb, bits_consumed);
     }
+    skip_bits_long(gb, bits_consumed);
 
     return bits_consumed;
 }