avcodec: Constify AVCodecs

[ffmpeg] / libavcodec / alac.c

diff --git a/libavcodec/alac.c b/libavcodec/alac.c
index 82689da02a2f12f2ffdd005a3521a49447c3cd37..67c02ab6af0e034af69eee79ed6ea864acf5ece0 100644 (file)
--- a/libavcodec/alac.c
+++ b/libavcodec/alac.c
@@ -302,6 +302,9 @@ static int decode_element(AVCodecContext *avctx, AVFrame *frame, int ch_index,
         decorr_shift       = get_bits(&alac->gb, 8);
         decorr_left_weight = get_bits(&alac->gb, 8);
 
+        if (channels == 2 && decorr_left_weight && decorr_shift > 31)
+            return AVERROR_INVALIDDATA;
+
         for (ch = 0; ch < channels; ch++) {
             prediction_type[ch]   = get_bits(&alac->gb, 4);
             lpc_quant[ch]         = get_bits(&alac->gb, 4);
@@ -489,6 +492,7 @@ static int allocate_buffers(ALACContext *alac)
 {
     int ch;
     unsigned buf_size = alac->max_samples_per_frame * sizeof(int32_t);
+    unsigned extra_buf_size = buf_size + AV_INPUT_BUFFER_PADDING_SIZE;
 
     for (ch = 0; ch < 2; ch++) {
         alac->predict_error_buffer[ch]  = NULL;
@@ -497,22 +501,19 @@ static int allocate_buffers(ALACContext *alac)
     }
 
     for (ch = 0; ch < FFMIN(alac->channels, 2); ch++) {
-        FF_ALLOC_OR_GOTO(alac->avctx, alac->predict_error_buffer[ch],
-                         buf_size, buf_alloc_fail);
+        if (!(alac->predict_error_buffer[ch] = av_malloc(buf_size)))
+            return AVERROR(ENOMEM);
 
         alac->direct_output = alac->sample_size > 16;
         if (!alac->direct_output) {
-            FF_ALLOC_OR_GOTO(alac->avctx, alac->output_samples_buffer[ch],
-                             buf_size + AV_INPUT_BUFFER_PADDING_SIZE, buf_alloc_fail);
+            if (!(alac->output_samples_buffer[ch] = av_malloc(extra_buf_size)))
+                return AVERROR(ENOMEM);
         }
 
-        FF_ALLOC_OR_GOTO(alac->avctx, alac->extra_bits_buffer[ch],
-                         buf_size + AV_INPUT_BUFFER_PADDING_SIZE, buf_alloc_fail);
+        if (!(alac->extra_bits_buffer[ch] = av_malloc(extra_buf_size)))
+            return AVERROR(ENOMEM);
     }
     return 0;
-buf_alloc_fail:
-    alac_decode_close(alac->avctx);
-    return AVERROR(ENOMEM);
 }
 
 static int alac_set_info(ALACContext *alac)
@@ -615,7 +616,7 @@ static const AVClass alac_class = {
     .version    = LIBAVUTIL_VERSION_INT,
 };
 
-AVCodec ff_alac_decoder = {
+const AVCodec ff_alac_decoder = {
     .name           = "alac",
     .long_name      = NULL_IF_CONFIG_SMALL("ALAC (Apple Lossless Audio Codec)"),
     .type           = AVMEDIA_TYPE_AUDIO,
@@ -624,6 +625,7 @@ AVCodec ff_alac_decoder = {
     .init           = alac_decode_init,
     .close          = alac_decode_close,
     .decode         = alac_decode_frame,
-    .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
+    .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS | AV_CODEC_CAP_CHANNEL_CONF,
+    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
     .priv_class     = &alac_class
 };