contrib: add a patch to allow compiling libam7xxx on Ubuntu 14.04 LTS

The patch has not been tested, it is here just as a convenient starting
point for interested users.

diff --git a/contrib/libam7xxx-compile-on-Ubuntu-14.04-LTS.diff b/contrib/libam7xxx-compile-on-Ubuntu-14.04-LTS.diff
new file mode 100644 (file)
index 0000000..f482b7e
--- /dev/null
+++ b/contrib/libam7xxx-compile-on-Ubuntu-14.04-LTS.diff
@@ -0,0 +1,98 @@
+diff --git a/examples/am7xxx-play.c b/examples/am7xxx-play.c
+index 46a91c9..fed455f 100644
+--- a/examples/am7xxx-play.c
++++ b/examples/am7xxx-play.c
+@@ -31,7 +31,6 @@
+ 
+ #include <libavdevice/avdevice.h>
+ #include <libavformat/avformat.h>
+-#include <libavutil/imgutils.h>
+ #include <libswscale/swscale.h>
+ 
+ #include <am7xxx.h>
+@@ -308,7 +307,7 @@ static int am7xxx_play(const char *input_format_string,
+       }
+ 
+       /* allocate an input frame */
+-      picture_raw = av_frame_alloc();
++      picture_raw = avcodec_alloc_frame();
+       if (picture_raw == NULL) {
+               fprintf(stderr, "cannot allocate the raw picture frame!\n");
+               ret = -ENOMEM;
+@@ -316,7 +315,7 @@ static int am7xxx_play(const char *input_format_string,
+       }
+ 
+       /* allocate output frame */
+-      picture_scaled = av_frame_alloc();
++      picture_scaled = avcodec_alloc_frame();
+       if (picture_scaled == NULL) {
+               fprintf(stderr, "cannot allocate the scaled picture!\n");
+               ret = -ENOMEM;
+@@ -327,10 +326,9 @@ static int am7xxx_play(const char *input_format_string,
+       picture_scaled->height = (output_ctx.codec_ctx)->height;
+ 
+       /* calculate the bytes needed for the output image and create buffer for the output image */
+-      out_buf_size = av_image_get_buffer_size((output_ctx.codec_ctx)->pix_fmt,
+-                                              (output_ctx.codec_ctx)->width,
+-                                              (output_ctx.codec_ctx)->height,
+-                                              1);
++      out_buf_size = avpicture_get_size((output_ctx.codec_ctx)->pix_fmt,
++                                        (output_ctx.codec_ctx)->width,
++                                        (output_ctx.codec_ctx)->height);
+       out_buf = av_malloc(out_buf_size * sizeof(uint8_t));
+       if (out_buf == NULL) {
+               fprintf(stderr, "cannot allocate output data buffer!\n");
+@@ -339,13 +337,11 @@ static int am7xxx_play(const char *input_format_string,
+       }
+ 
+       /* assign appropriate parts of buffer to image planes in picture_scaled */
+-      av_image_fill_arrays(picture_scaled->data,
+-                           picture_scaled->linesize,
+-                           out_buf,
+-                           (output_ctx.codec_ctx)->pix_fmt,
+-                           (output_ctx.codec_ctx)->width,
+-                           (output_ctx.codec_ctx)->height,
+-                           1);
++      avpicture_fill((AVPicture *)picture_scaled,
++                     out_buf,
++                     (output_ctx.codec_ctx)->pix_fmt,
++                     (output_ctx.codec_ctx)->width,
++                     (output_ctx.codec_ctx)->height);
+ 
+       sw_scale_ctx = sws_getCachedContext(NULL,
+                                           (input_ctx.codec_ctx)->width,
+@@ -458,17 +454,17 @@ static int am7xxx_play(const char *input_format_string,
+               }
+ end_while:
+               if (!output_ctx.raw_output && got_packet)
+-                      av_packet_unref(&out_packet);
+-              av_packet_unref(&in_packet);
++                      av_free_packet(&out_packet);
++              av_free_packet(&in_packet);
+       }
+ 
+       sws_freeContext(sw_scale_ctx);
+ cleanup_out_buf:
+       av_free(out_buf);
+ cleanup_picture_scaled:
+-      av_frame_free(&picture_scaled);
++      avcodec_free_frame(&picture_scaled);
+ cleanup_picture_raw:
+-      av_frame_free(&picture_raw);
++      avcodec_free_frame(&picture_raw);
+ 
+ cleanup_output:
+       /* av_free is needed as well,
+diff --git a/src/am7xxx.c b/src/am7xxx.c
+index 84d7e9c..f26fc18 100644
+--- a/src/am7xxx.c
++++ b/src/am7xxx.c
+@@ -1106,7 +1106,7 @@ AM7XXX_PUBLIC int am7xxx_init(am7xxx_context **ctx)
+               goto out_free_context;
+       }
+ 
+-      libusb_set_debug((*ctx)->usb_context, LIBUSB_LOG_LEVEL_INFO);
++      libusb_set_debug((*ctx)->usb_context, 3);
+ 
+       ret = scan_devices(*ctx, SCAN_OP_BUILD_DEVLIST , 0, NULL);
+       if (ret < 0) {