avcodec/codec, allcodecs: Constify the AVCodec API

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

6 files changed, 14 insertions, 12 deletions

diff --git a/doc/examples/demuxing_decoding.c b/doc/examples/demuxing_decoding.c
index db5e0cb951..55fdb2555c 100644
--- a/doc/examples/demuxing_decoding.c
+++ b/doc/examples/demuxing_decoding.c
@@ -149,7 +149,7 @@ static int open_codec_context(int *stream_idx,
 {
     int ret, stream_index;
     AVStream *st;
-    AVCodec *dec = NULL;
+    const AVCodec *dec = NULL;
     AVDictionary *opts = NULL;
 
     ret = av_find_best_stream(fmt_ctx, type, -1, -1, NULL, 0);
diff --git a/doc/examples/muxing.c b/doc/examples/muxing.c
index 014359e2ca..fe1b9ded21 100644
--- a/doc/examples/muxing.c
+++ b/doc/examples/muxing.c
@@ -121,7 +121,7 @@ static int write_frame(AVFormatContext *fmt_ctx, AVCodecContext *c,
 
 /* Add an output stream. */
 static void add_stream(OutputStream *ost, AVFormatContext *oc,
-                       AVCodec **codec,
+                       const AVCodec **codec,
                        enum AVCodecID codec_id)
 {
     AVCodecContext *c;
@@ -242,7 +242,8 @@ static AVFrame *alloc_audio_frame(enum AVSampleFormat sample_fmt,
     return frame;
 }
 
-static void open_audio(AVFormatContext *oc, AVCodec *codec, OutputStream *ost, AVDictionary *opt_arg)
+static void open_audio(AVFormatContext *oc, const AVCodec *codec,
+                       OutputStream *ost, AVDictionary *opt_arg)
 {
     AVCodecContext *c;
     int nb_samples;
@@ -405,7 +406,8 @@ static AVFrame *alloc_picture(enum AVPixelFormat pix_fmt, int width, int height)
     return picture;
 }
 
-static void open_video(AVFormatContext *oc, AVCodec *codec, OutputStream *ost, AVDictionary *opt_arg)
+static void open_video(AVFormatContext *oc, const AVCodec *codec,
+                       OutputStream *ost, AVDictionary *opt_arg)
 {
     int ret;
     AVCodecContext *c = ost->enc;
@@ -539,7 +541,7 @@ int main(int argc, char **argv)
     const AVOutputFormat *fmt;
     const char *filename;
     AVFormatContext *oc;
-    AVCodec *audio_codec, *video_codec;
+    const AVCodec *audio_codec, *video_codec;
     int ret;
     int have_video = 0, have_audio = 0;
     int encode_video = 0, encode_audio = 0;
diff --git a/doc/examples/transcode_aac.c b/doc/examples/transcode_aac.c
index 73786ab59b..711076b5a5 100644
--- a/doc/examples/transcode_aac.c
+++ b/doc/examples/transcode_aac.c
@@ -60,7 +60,7 @@ static int open_input_file(const char *filename,
                            AVCodecContext **input_codec_context)
 {
     AVCodecContext *avctx;
-    AVCodec *input_codec;
+    const AVCodec *input_codec;
     int error;
 
     /* Open the input file to read from it. */
@@ -144,7 +144,7 @@ static int open_output_file(const char *filename,
     AVCodecContext *avctx          = NULL;
     AVIOContext *output_io_context = NULL;
     AVStream *stream               = NULL;
-    AVCodec *output_codec          = NULL;
+    const AVCodec *output_codec    = NULL;
     int error;
 
     /* Open the output file to write to it. */
diff --git a/doc/examples/transcoding.c b/doc/examples/transcoding.c
index 6ca3089330..3a97426e2c 100644
--- a/doc/examples/transcoding.c
+++ b/doc/examples/transcoding.c
@@ -77,7 +77,7 @@ static int open_input_file(const char *filename)
 
     for (i = 0; i < ifmt_ctx->nb_streams; i++) {
         AVStream *stream = ifmt_ctx->streams[i];
-        AVCodec *dec = avcodec_find_decoder(stream->codecpar->codec_id);
+        const AVCodec *dec = avcodec_find_decoder(stream->codecpar->codec_id);
         AVCodecContext *codec_ctx;
         if (!dec) {
             av_log(NULL, AV_LOG_ERROR, "Failed to find decoder for stream #%u\n", i);
@@ -122,7 +122,7 @@ static int open_output_file(const char *filename)
     AVStream *out_stream;
     AVStream *in_stream;
     AVCodecContext *dec_ctx, *enc_ctx;
-    AVCodec *encoder;
+    const AVCodec *encoder;
     int ret;
     unsigned int i;
 
diff --git a/doc/examples/vaapi_encode.c b/doc/examples/vaapi_encode.c
index 46bca1b3fe..e232fa579a 100644
--- a/doc/examples/vaapi_encode.c
+++ b/doc/examples/vaapi_encode.c
@@ -105,7 +105,7 @@ int main(int argc, char *argv[])
     FILE *fin = NULL, *fout = NULL;
     AVFrame *sw_frame = NULL, *hw_frame = NULL;
     AVCodecContext *avctx = NULL;
-    AVCodec *codec = NULL;
+    const AVCodec *codec = NULL;
     const char *enc_name = "h264_vaapi";
 
     if (argc < 5) {
diff --git a/doc/examples/vaapi_transcode.c b/doc/examples/vaapi_transcode.c
index 5a1a704a8e..e9b33eede0 100644
--- a/doc/examples/vaapi_transcode.c
+++ b/doc/examples/vaapi_transcode.c
@@ -142,7 +142,7 @@ end:
     return ret;
 }
 
-static int dec_enc(AVPacket *pkt, AVCodec *enc_codec)
+static int dec_enc(AVPacket *pkt, const AVCodec *enc_codec)
 {
     AVFrame *frame;
     int ret = 0;
@@ -226,9 +226,9 @@ fail:
 
 int main(int argc, char **argv)
 {
+    const AVCodec *enc_codec;
     int ret = 0;
     AVPacket *dec_pkt;
-    AVCodec *enc_codec;
 
     if (argc != 4) {
         fprintf(stderr, "Usage: %s <input file> <encode codec> <output file>\n"