Correctly implement ac3 float/fixed encoder.

There is no need to have 2 encoders, the input sample format can,does and should choose which is used
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 39 insertions, 0 deletions

diff --git a/libavcodec/ac3.h b/libavcodec/ac3.h
index 371d0a2532..6baf989394 100644
--- a/libavcodec/ac3.h
+++ b/libavcodec/ac3.h
@@ -38,6 +38,8 @@
 #define AC3_CRITICAL_BANDS 50
 #define AC3_MAX_CPL_BANDS  18
 
+#include "libavutil/opt.h"
+#include "avcodec.h"
 #include "ac3tab.h"
 
 /* exponent encoding strategy */
@@ -128,8 +130,45 @@ typedef enum {
     EAC3_FRAME_TYPE_RESERVED
 } EAC3FrameType;
 
+/**
+ * Encoding Options used by AVOption.
+ */
+typedef struct AC3EncOptions {
+    /* AC-3 metadata options*/
+    int dialogue_level;
+    int bitstream_mode;
+    float center_mix_level;
+    float surround_mix_level;
+    int dolby_surround_mode;
+    int audio_production_info;
+    int mixing_level;
+    int room_type;
+    int copyright;
+    int original;
+    int extended_bsi_1;
+    int preferred_stereo_downmix;
+    float ltrt_center_mix_level;
+    float ltrt_surround_mix_level;
+    float loro_center_mix_level;
+    float loro_surround_mix_level;
+    int extended_bsi_2;
+    int dolby_surround_ex_mode;
+    int dolby_headphone_mode;
+    int ad_converter_type;
+
+    /* other encoding options */
+    int allow_per_frame_metadata;
+} AC3EncOptions;
+
+
 void ff_ac3_common_init(void);
 
+extern const int64_t ff_ac3_channel_layouts[];
+extern const AVOption ff_ac3_options[];
+
+extern AVCodec ff_ac3_float_encoder;
+extern AVCodec ff_ac3_fixed_encoder;
+
 /**
  * Calculate the log power-spectral density of the input signal.
  * This gives a rough estimate of signal power in the frequency domain by using