[transcode] Update to new ffmpeg api - part 1

- no more use of AVStream.codec
- ditch some backwards compability
- move closer to being able do video, at least for artwork

src/httpd.c

@@ -552,7 +552,7 @@ httpd_stream_file(struct evhttp_request *req, int id)
 
       stream_cb = stream_chunk_xcode_cb;
 
-      st->xcode = transcode_setup(mfi->data_kind, mfi->path, mfi->song_length, XCODE_PCM16_HEADER, &st->size);
+      st->xcode = transcode_setup(XCODE_PCM16_HEADER, mfi->data_kind, mfi->path, mfi->song_length, &st->size);
       if (!st->xcode)
 	{
 	  DPRINTF(E_WARN, L_HTTPD, "Transcoding setup failed, aborting streaming\n");

src/httpd_streaming.c

@@ -299,7 +299,7 @@ streaming_init(void)
       return -1;
     }
 
-  streaming_encode_ctx = transcode_encode_setup(decode_ctx, XCODE_MP3, NULL);
+  streaming_encode_ctx = transcode_encode_setup(XCODE_MP3, decode_ctx, NULL);
   transcode_decode_cleanup(decode_ctx);
   if (!streaming_encode_ctx)
     {

src/inputs/file_http.c

@@ -31,7 +31,7 @@
 static int
 setup(struct player_source *ps)
 {
-  ps->input_ctx = transcode_setup(ps->data_kind, ps->path, ps->len_ms, XCODE_PCM16_NOHEADER, NULL);
+  ps->input_ctx = transcode_setup(XCODE_PCM16_NOHEADER, ps->data_kind, ps->path, ps->len_ms, NULL);
   if (!ps->input_ctx)
     return -1;
 

src/transcode.h

@@ -6,19 +6,17 @@
 #include "db.h"
 #include "http.h"
 
-#define XCODE_WAVHEADER (1 << 14)
-#define XCODE_HAS_VIDEO (1 << 15)
-
 enum transcode_profile
 {
-  // Transcodes the best available audio stream into PCM16 (does not add wav header)
-  XCODE_PCM16_NOHEADER = 1,
-  // Transcodes the best available audio stream into PCM16 (with wav header)
-  XCODE_PCM16_HEADER   = XCODE_WAVHEADER | 2,
-  // Transcodes the best available audio stream into MP3
-  XCODE_MP3            = 3,
-  // Transcodes video + audio + subtitle streams (not tested - for future use)
-  XCODE_H264_AAC       = XCODE_HAS_VIDEO | 4,
+  // Transcodes the best audio stream into PCM16 (does not add wav header)
+  XCODE_PCM16_NOHEADER,
+  // Transcodes the best audio stream into PCM16 (with wav header)
+  XCODE_PCM16_HEADER,
+  // Transcodes the best audio stream into MP3
+  XCODE_MP3,
+  // Transcodes the best video stream into JPEG/PNG
+  XCODE_JPEG,
+  XCODE_PNG,
 };
 
 struct decode_ctx;
@@ -28,13 +26,13 @@ struct decoded_frame;
 
 // Setting up
 struct decode_ctx *
-transcode_decode_setup(enum data_kind data_kind, const char *path, uint32_t song_length, int decode_video);
+transcode_decode_setup(enum transcode_profile profile, enum data_kind data_kind, const char *path, uint32_t song_length);
 
 struct encode_ctx *
-transcode_encode_setup(struct decode_ctx *src_ctx, enum transcode_profile profile, off_t *est_size);
+transcode_encode_setup(enum transcode_profile profile, struct decode_ctx *src_ctx, off_t *est_size);
 
 struct transcode_ctx *
-transcode_setup(enum data_kind data_kind, const char *path, uint32_t song_length, enum transcode_profile profile, off_t *est_size);
+transcode_setup(enum transcode_profile profile, enum data_kind data_kind, const char *path, uint32_t song_length, off_t *est_size);
 
 struct decode_ctx *
 transcode_decode_setup_raw(void);