fixed some warnings

Author: debugly

FFmpegTutorial/Classes/0x02/FFTPlayer0x02.m

@@ -128,7 +128,7 @@ - (void)openStreamFunc
                         //采样率
                         int sample_rate = codecCtx->sample_rate;
                         //声道数
-                        int channels = codecCtx->channels;
+                        int channels = codecCtx->ch_layout.nb_channels;
                         //平均比特率
                         int64_t brate = codecCtx->bit_rate;
                         //时长

FFmpegTutorial/Classes/0x05/FFTPlayer0x05.m

@@ -122,7 +122,7 @@ - (int)openStreamComponent:(AVFormatContext *)ic streamIdx:(int)idx
     avctx->pkt_timebase = stream->time_base;
 
     //查找解码器
-    AVCodec *codec = avcodec_find_decoder(avctx->codec_id);
+    const AVCodec *codec = avcodec_find_decoder(avctx->codec_id);
     if (!codec){
         avcodec_free_context(&avctx);
         return -1;

FFmpegTutorial/Classes/0x06/FFTDecoder0x06.m

@@ -72,7 +72,7 @@ - (int)open
     avctx->pkt_timebase = stream->time_base;
 
     //查找解码器
-    AVCodec *codec = avcodec_find_decoder(avctx->codec_id);
+    const AVCodec *codec = avcodec_find_decoder(avctx->codec_id);
     if (!codec){
         avcodec_free_context(&avctx);
         return -1;

FFmpegTutorial/Classes/0x10/FFTDecoder0x10.m

@@ -76,7 +76,7 @@ - (int)open
     avctx->pkt_timebase = stream->time_base;
 
     //查找解码器
-    AVCodec *codec = avcodec_find_decoder(avctx->codec_id);
+    const AVCodec *codec = avcodec_find_decoder(avctx->codec_id);
     if (!codec){
         avcodec_free_context(&avctx);
         return -1;

FFmpegTutorial/Classes/0x20/FFTDecoder0x20.m

@@ -79,7 +79,7 @@ - (int)open
     avctx->pkt_timebase = stream->time_base;
 
     //查找解码器
-    AVCodec *codec = avcodec_find_decoder(avctx->codec_id);
+    const AVCodec *codec = avcodec_find_decoder(avctx->codec_id);
     if (!codec){
         avcodec_free_context(&avctx);
         return -1;
@@ -100,7 +100,7 @@ - (int)open
     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
         self.format = avctx->sample_fmt;
         self.sampleRate = avctx->sample_rate;
-        self.channelLayout = (int)avctx->channel_layout;
+        self.channelLayout = (int)avctx->ch_layout.nb_channels;
     } else if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
         self.format = avctx->pix_fmt;
         self.picWidth = avctx->width;

FFmpegTutorial/Classes/common/FFTAudioResample.m

@@ -74,7 +74,7 @@ - (BOOL)resampleFrame:(AVFrame *)inF out:(AVFrame **)outP
 
     //int64_t dst_ch_layout;
     //av_opt_get_int(d.swr_ctx, "out_channel_layout", 0, &dst_ch_layout);
-    out_frame->channel_layout = inF->channel_layout;
+    out_frame->channel_layout = inF->ch_layout.nb_channels;
     out_frame->sample_rate = self.out_sample_rate;
     out_frame->format = self.out_sample_fmt;
 

FFmpegTutorial/Classes/common/FFTDecoder.m

@@ -83,7 +83,7 @@ - (int)open
     avctx->pkt_timebase = stream->time_base;
 
     //查找解码器
-    AVCodec *codec = avcodec_find_decoder(avctx->codec_id);
+    const AVCodec *codec = avcodec_find_decoder(avctx->codec_id);
     if (!codec){
         avcodec_free_context(&avctx);
         return -1;
@@ -104,7 +104,7 @@ - (int)open
     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
         self.format = avctx->sample_fmt;
         self.sampleRate = avctx->sample_rate;
-        self.channelLayout = (int)avctx->channel_layout;
+        self.channelLayout = (int)avctx->ch_layout.nb_channels;
     } else if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
         self.format = avctx->pix_fmt;
         self.picWidth = avctx->width;