configure: Suppress "potentially uninitialized variable" warnings from MSVC

[ffmpeg] / libavcodec / mace.c

diff --git a/libavcodec/mace.c b/libavcodec/mace.c
index 8fef839d60e0dab607184e7983fe21a65d661cc7..25c6b703ac19431600c0172dc1866019f0b9ca26 100644 (file)
--- a/libavcodec/mace.c
+++ b/libavcodec/mace.c
@@ -25,6 +25,7 @@
  */
 
 #include "avcodec.h"
+#include "internal.h"
 #include "libavutil/common.h"
 
 /*
@@ -154,7 +155,6 @@ typedef struct ChannelData {
 } ChannelData;
 
 typedef struct MACEContext {
-    AVFrame frame;
     ChannelData chd[2];
 } MACEContext;
 
@@ -226,21 +226,17 @@ static void chomp6(ChannelData *chd, int16_t *output, uint8_t val, int tab_idx)
 
 static av_cold int mace_decode_init(AVCodecContext * avctx)
 {
-    MACEContext *ctx = avctx->priv_data;
-
-    if (avctx->channels > 2)
-        return -1;
+    if (avctx->channels > 2 || avctx->channels < 1)
+        return AVERROR(EINVAL);
     avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
 
-    avcodec_get_frame_defaults(&ctx->frame);
-    avctx->coded_frame = &ctx->frame;
-
     return 0;
 }
 
 static int mace_decode_frame(AVCodecContext *avctx, void *data,
                              int *got_frame_ptr, AVPacket *avpkt)
 {
+    AVFrame *frame     = data;
     const uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
     int16_t **samples;
@@ -249,12 +245,12 @@ static int mace_decode_frame(AVCodecContext *avctx, void *data,
     int is_mace3 = (avctx->codec_id == AV_CODEC_ID_MACE3);
 
     /* get output buffer */
-    ctx->frame.nb_samples = 3 * (buf_size << (1 - is_mace3)) / avctx->channels;
-    if ((ret = avctx->get_buffer(avctx, &ctx->frame)) < 0) {
+    frame->nb_samples = 3 * (buf_size << (1 - is_mace3)) / avctx->channels;
+    if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }
-    samples = (int16_t **)ctx->frame.extended_data;
+    samples = (int16_t **)frame->extended_data;
 
     for(i = 0; i < avctx->channels; i++) {
         int16_t *output = samples[i];
@@ -278,34 +274,33 @@ static int mace_decode_frame(AVCodecContext *avctx, void *data,
             }
     }
 
-    *got_frame_ptr   = 1;
-    *(AVFrame *)data = ctx->frame;
+    *got_frame_ptr = 1;
 
     return buf_size;
 }
 
 AVCodec ff_mace3_decoder = {
     .name           = "mace3",
+    .long_name      = NULL_IF_CONFIG_SMALL("MACE (Macintosh Audio Compression/Expansion) 3:1"),
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = AV_CODEC_ID_MACE3,
     .priv_data_size = sizeof(MACEContext),
     .init           = mace_decode_init,
     .decode         = mace_decode_frame,
     .capabilities   = CODEC_CAP_DR1,
-    .long_name      = NULL_IF_CONFIG_SMALL("MACE (Macintosh Audio Compression/Expansion) 3:1"),
     .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
                                                       AV_SAMPLE_FMT_NONE },
 };
 
 AVCodec ff_mace6_decoder = {
     .name           = "mace6",
+    .long_name      = NULL_IF_CONFIG_SMALL("MACE (Macintosh Audio Compression/Expansion) 6:1"),
     .type           = AVMEDIA_TYPE_AUDIO,
     .id             = AV_CODEC_ID_MACE6,
     .priv_data_size = sizeof(MACEContext),
     .init           = mace_decode_init,
     .decode         = mace_decode_frame,
     .capabilities   = CODEC_CAP_DR1,
-    .long_name      = NULL_IF_CONFIG_SMALL("MACE (Macintosh Audio Compression/Expansion) 6:1"),
     .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
                                                       AV_SAMPLE_FMT_NONE },
 };