Release version 0.1.1

[libam7xxx.git] / examples / am7xxx-play.c

diff --git a/examples/am7xxx-play.c b/examples/am7xxx-play.c
index 5aa53ae..2fc8763 100644 (file)
--- a/examples/am7xxx-play.c
+++ b/examples/am7xxx-play.c
@@ -17,6 +17,12 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+/**
+ * @example examples/am7xxx-play.c
+ * am7xxx-play uses libavdevice, libavformat, libavcodec and libswscale to
+ * decode the input, encode it to jpeg and display it with libam7xxx.
+ */
+
 #include <stdio.h>
 #include <stdint.h>
 #include <string.h>
@@ -84,7 +90,7 @@ static int video_input_init(struct video_input_ctx *input_ctx,
        /* get information on the input stream (e.g. format, bitrate, framerate) */
        ret = avformat_find_stream_info(input_format_ctx, NULL);
        if (ret < 0) {
-               fprintf(stderr, "cannot get information on the stream");
+               fprintf(stderr, "cannot get information on the stream\n");
                goto cleanup;
        }
 
@@ -115,7 +121,7 @@ static int video_input_init(struct video_input_ctx *input_ctx,
        /* find the decoder for the video stream */
        input_codec = avcodec_find_decoder(input_codec_ctx->codec_id);
        if (input_codec == NULL) {
-               fprintf(stderr, "input_codec is NULL!");
+               fprintf(stderr, "input_codec is NULL!\n");
                ret = -ENOTSUP;
                goto cleanup;
        }
@@ -163,7 +169,7 @@ static int video_output_init(struct video_output_ctx *output_ctx,
        int ret;
 
        if (input_ctx == NULL) {
-               fprintf(stderr, "input_ctx must not be NULL!");
+               fprintf(stderr, "input_ctx must not be NULL!\n");
                ret = -EINVAL;
                goto out;
        }
@@ -171,7 +177,7 @@ static int video_output_init(struct video_output_ctx *output_ctx,
        /* create the encoder context */
        output_codec_ctx = avcodec_alloc_context3(NULL);
        if (output_codec_ctx == NULL) {
-               fprintf(stderr, "cannot allocate output codec context!");
+               fprintf(stderr, "cannot allocate output codec context!\n");
                ret = -ENOMEM;
                goto out;
        }
@@ -290,7 +296,7 @@ static int am7xxx_play(const char *input_format_string,
        /* allocate an input frame */
        picture_raw = avcodec_alloc_frame();
        if (picture_raw == NULL) {
-               fprintf(stderr, "cannot allocate the raw picture frame!");
+               fprintf(stderr, "cannot allocate the raw picture frame!\n");
                ret = -ENOMEM;
                goto cleanup_output;
        }
@@ -598,7 +604,7 @@ int main(int argc, char *argv[])
        am7xxx_context *ctx;
        am7xxx_device *dev;
 
-       while ((opt = getopt(argc, argv, "f:i:o:s:uF:q:l:hp:")) != -1) {
+       while ((opt = getopt(argc, argv, "f:i:o:s:uF:q:l:p:h")) != -1) {
                switch (opt) {
                case 'f':
                        input_format_string = strdup(optarg);
@@ -678,11 +684,6 @@ int main(int argc, char *argv[])
                                log_level = AM7XXX_LOG_ERROR;
                        }
                        break;
-               case 'h':
-                       usage(argv[0]);
-                       ret = 0;
-                       goto out;
-                       break;
                case 'p':
                        power_mode = atoi(optarg);
                        switch(power_mode) {
@@ -699,6 +700,11 @@ int main(int argc, char *argv[])
                                goto out;
                        }
                        break;
+               case 'h':
+                       usage(argv[0]);
+                       ret = 0;
+                       goto out;
+                       break;
                default: /* '?' */
                        usage(argv[0]);
                        ret = -EINVAL;