X-Git-Url: https://git.ao2.it/libam7xxx.git/blobdiff_plain/efe749ba4b8d59946ed3f4a7754bee41797399d5..0fa2d27df5433816e7e659bd1115d2fff42288b0:/examples/am7xxx-play.c

diff --git a/examples/am7xxx-play.c b/examples/am7xxx-play.c
index a29212c..2fc8763 100644
--- 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 +296,8 @@ 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;
 	}
 
@@ -298,6 +305,7 @@ static int am7xxx_play(const char *input_format_string,
 	picture_scaled = avcodec_alloc_frame();
 	if (picture_scaled == NULL) {
 		fprintf(stderr, "cannot allocate the scaled picture!\n");
+		ret = -ENOMEM;
 		goto cleanup_picture_raw;
 	}
 
@@ -308,6 +316,7 @@ static int am7xxx_play(const char *input_format_string,
 	out_buf = av_malloc(out_buf_size * sizeof(uint8_t));
 	if (out_buf == NULL) {
 		fprintf(stderr, "cannot allocate output data buffer!\n");
+		ret = -ENOMEM;
 		goto cleanup_picture_scaled;
 	}
 
@@ -329,6 +338,7 @@ static int am7xxx_play(const char *input_format_string,
 					    NULL, NULL, NULL);
 	if (sw_scale_ctx == NULL) {
 		fprintf(stderr, "cannot set up the rescaling context!\n");
+		ret = -EINVAL;
 		goto cleanup_out_buf;
 	}
 
@@ -564,6 +574,7 @@ static void usage(char *name)
 	printf("\t\t\t\t\t1 - JPEG\n");
 	printf("\t\t\t\t\t2 - NV12\n");
 	printf("\t-q <quality>\t\tquality of jpeg sent to the device, between 1 and 100\n");
+	printf("\t-l <log level>\t\tthe verbosity level of libam7xxx output (0-5)\n");
 	printf("\t-p <power level>\tpower level of device, between %x (off) and %x (maximum)\n", AM7XXX_POWER_OFF, AM7XXX_POWER_TURBO);
 	printf("\t\t\t\tWARNING: Level 2 and greater require the master AND\n\t\t\t\t\t the slave connector to be plugged in.\n");
 	printf("\t-h \t\t\tthis help message\n");
@@ -587,12 +598,13 @@ int main(int argc, char *argv[])
 	unsigned int rescale_method = SWS_BICUBIC;
 	unsigned int upscale = 0;
 	unsigned int quality = 95;
+	int log_level = AM7XXX_LOG_INFO;
 	am7xxx_power_mode power_mode = AM7XXX_POWER_LOW;
 	int format = AM7XXX_IMAGE_FORMAT_JPEG;
 	am7xxx_context *ctx;
 	am7xxx_device *dev;
 
-	while ((opt = getopt(argc, argv, "f:i:o:s:uF:q: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);
@@ -620,7 +632,7 @@ int main(int argc, char *argv[])
 			break;
 		case 's':
 			rescale_method = atoi(optarg);
-			switch(format) {
+			switch(rescale_method) {
 			case SWS_FAST_BILINEAR:
 			case SWS_BILINEAR:
 			case SWS_BICUBIC:
@@ -636,7 +648,7 @@ int main(int argc, char *argv[])
 			default:
 				fprintf(stderr, "Unsupported rescale method\n");
 				ret = -EINVAL;
-				goto out;;
+				goto out;
 			}
 			break;
 		case 'u':
@@ -654,7 +666,7 @@ int main(int argc, char *argv[])
 			default:
 				fprintf(stderr, "Unsupported format\n");
 				ret = -EINVAL;
-				goto out;;
+				goto out;
 			}
 			break;
 		case 'q':
@@ -662,13 +674,15 @@ int main(int argc, char *argv[])
 			if (quality < 1 || quality > 100) {
 				fprintf(stderr, "Invalid quality value, must be between 1 and 100\n");
 				ret = -EINVAL;
-				goto out;;
+				goto out;
 			}
 			break;
-		case 'h':
-			usage(argv[0]);
-			ret = 0;
-			goto out;
+		case 'l':
+			log_level = atoi(optarg);
+			if (log_level < AM7XXX_LOG_FATAL || log_level > AM7XXX_LOG_TRACE) {
+				fprintf(stderr, "Unsupported log level, falling back to AM7XXX_LOG_ERROR\n");
+				log_level = AM7XXX_LOG_ERROR;
+			}
 			break;
 		case 'p':
 			power_mode = atoi(optarg);
@@ -686,6 +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;
@@ -732,6 +751,8 @@ int main(int argc, char *argv[])
 		goto out;
 	}
 
+	am7xxx_set_log_level(ctx, log_level);
+
 	ret = am7xxx_open_device(ctx, &dev, 0);
 	if (ret < 0) {
 		perror("am7xxx_open_device");