wma: Refactor common code to fix standalone compilation of WMA lossless decoder.

libavcodec/Makefile

@@ -92,8 +92,8 @@ OBJS-$(CONFIG_AVS_DECODER)             += avs.o
 OBJS-$(CONFIG_BETHSOFTVID_DECODER)     += bethsoftvideo.o
 OBJS-$(CONFIG_BFI_DECODER)             += bfi.o
 OBJS-$(CONFIG_BINK_DECODER)            += bink.o binkdsp.o
-OBJS-$(CONFIG_BINKAUDIO_DCT_DECODER)   += binkaudio.o wma.o
-OBJS-$(CONFIG_BINKAUDIO_RDFT_DECODER)  += binkaudio.o wma.o
+OBJS-$(CONFIG_BINKAUDIO_DCT_DECODER)   += binkaudio.o wma.o wma_common.o
+OBJS-$(CONFIG_BINKAUDIO_RDFT_DECODER)  += binkaudio.o wma.o wma_common.o
 OBJS-$(CONFIG_BMP_DECODER)             += bmp.o msrledec.o
 OBJS-$(CONFIG_BMP_ENCODER)             += bmpenc.o
 OBJS-$(CONFIG_BMV_VIDEO_DECODER)       += bmv.o
@@ -419,12 +419,12 @@ OBJS-$(CONFIG_VP6_DECODER)             += vp6.o vp56.o vp56data.o vp56dsp.o \
 OBJS-$(CONFIG_VP8_DECODER)             += vp8.o vp8dsp.o vp56rac.o
 OBJS-$(CONFIG_VQA_DECODER)             += vqavideo.o
 OBJS-$(CONFIG_WAVPACK_DECODER)         += wavpack.o
-OBJS-$(CONFIG_WMALOSSLESS_DECODER)     += wmalosslessdec.o wma.o
-OBJS-$(CONFIG_WMAPRO_DECODER)          += wmaprodec.o wma.o
-OBJS-$(CONFIG_WMAV1_DECODER)           += wmadec.o wma.o aactab.o
-OBJS-$(CONFIG_WMAV1_ENCODER)           += wmaenc.o wma.o aactab.o
-OBJS-$(CONFIG_WMAV2_DECODER)           += wmadec.o wma.o aactab.o
-OBJS-$(CONFIG_WMAV2_ENCODER)           += wmaenc.o wma.o aactab.o
+OBJS-$(CONFIG_WMALOSSLESS_DECODER)     += wmalosslessdec.o wma_common.o
+OBJS-$(CONFIG_WMAPRO_DECODER)          += wmaprodec.o wma.o wma_common.o
+OBJS-$(CONFIG_WMAV1_DECODER)           += wmadec.o wma.o wma_common.o aactab.o
+OBJS-$(CONFIG_WMAV1_ENCODER)           += wmaenc.o wma.o wma_common.o aactab.o
+OBJS-$(CONFIG_WMAV2_DECODER)           += wmadec.o wma.o wma_common.o aactab.o
+OBJS-$(CONFIG_WMAV2_ENCODER)           += wmaenc.o wma.o wma_common.o aactab.o
 OBJS-$(CONFIG_WMAVOICE_DECODER)        += wmavoice.o \
                                           celp_math.o celp_filters.o \
                                           acelp_vectors.o acelp_filters.o

libavcodec/wma.c

@@ -22,6 +22,7 @@
 #include "avcodec.h"
 #include "sinewin.h"
 #include "wma.h"
+#include "wma_common.h"
 #include "wmadata.h"
 
 #undef NDEBUG
@@ -67,46 +68,6 @@ static void init_coef_vlc(VLC *vlc, uint16_t **prun_table,
     av_free(level_table);
 }
 
-/**
- *@brief Get the samples per frame for this stream.
- *@param sample_rate output sample_rate
- *@param version wma version
- *@param decode_flags codec compression features
- *@return log2 of the number of output samples per frame
- */
-int av_cold ff_wma_get_frame_len_bits(int sample_rate, int version,
-                                      unsigned int decode_flags)
-{
-
-    int frame_len_bits;
-
-    if (sample_rate <= 16000) {
-        frame_len_bits = 9;
-    } else if (sample_rate <= 22050 ||
-             (sample_rate <= 32000 && version == 1)) {
-        frame_len_bits = 10;
-    } else if (sample_rate <= 48000 || version < 3) {
-        frame_len_bits = 11;
-    } else if (sample_rate <= 96000) {
-        frame_len_bits = 12;
-    } else {
-        frame_len_bits = 13;
-    }
-
-    if (version == 3) {
-        int tmp = decode_flags & 0x6;
-        if (tmp == 0x2) {
-            ++frame_len_bits;
-        } else if (tmp == 0x4) {
-            --frame_len_bits;
-        } else if (tmp == 0x6) {
-            frame_len_bits -= 2;
-        }
-    }
-
-    return frame_len_bits;
-}
-
 int ff_wma_init(AVCodecContext *avctx, int flags2)
 {
     WMACodecContext *s = avctx->priv_data;

libavcodec/wma.h

@@ -150,8 +150,6 @@ extern const float ff_wma_lsp_codebook[NB_LSP_COEFS][16];
 extern const uint32_t ff_aac_scalefactor_code[121];
 extern const uint8_t  ff_aac_scalefactor_bits[121];
 
-int av_cold ff_wma_get_frame_len_bits(int sample_rate, int version,
-                                      unsigned int decode_flags);
 int ff_wma_init(AVCodecContext * avctx, int flags2);
 int ff_wma_total_gain_to_bits(int total_gain);
 int ff_wma_end(AVCodecContext *avctx);

libavcodec/wma_common.c

+/*
+ * common code shared by all WMA variants
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/attributes.h"
+#include "wma_common.h"
+
+/**
+ *@brief Get the samples per frame for this stream.
+ *@param sample_rate output sample_rate
+ *@param version wma version
+ *@param decode_flags codec compression features
+ *@return log2 of the number of output samples per frame
+ */
+int av_cold ff_wma_get_frame_len_bits(int sample_rate, int version,
+                                      unsigned int decode_flags)
+{
+
+    int frame_len_bits;
+
+    if (sample_rate <= 16000) {
+        frame_len_bits = 9;
+    } else if (sample_rate <= 22050 ||
+             (sample_rate <= 32000 && version == 1)) {
+        frame_len_bits = 10;
+    } else if (sample_rate <= 48000 || version < 3) {
+        frame_len_bits = 11;
+    } else if (sample_rate <= 96000) {
+        frame_len_bits = 12;
+    } else {
+        frame_len_bits = 13;
+    }
+
+    if (version == 3) {
+        int tmp = decode_flags & 0x6;
+        if (tmp == 0x2) {
+            ++frame_len_bits;
+        } else if (tmp == 0x4) {
+            --frame_len_bits;
+        } else if (tmp == 0x6) {
+            frame_len_bits -= 2;
+        }
+    }
+
+    return frame_len_bits;
+}

libavcodec/wma_common.h

+/*
+ * common code shared by all WMA variants
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_WMA_COMMON_H
+#define AVCODEC_WMA_COMMON_H
+
+#include "libavutil/attributes.h"
+
+int av_cold ff_wma_get_frame_len_bits(int sample_rate, int version,
+                                      unsigned int decode_flags);
+
+#endif /* AVCODEC_WMA_COMMON_H */

libavcodec/wmalosslessdec.c

@@ -27,6 +27,7 @@
 #include "get_bits.h"
 #include "put_bits.h"
 #include "wma.h"
+#include "wma_common.h"
 
 /** current decoder limitations */
 #define WMALL_MAX_CHANNELS      8                       ///< max number of handled channels

libavcodec/wmaprodec.c

@@ -97,6 +97,7 @@
 #include "fmtconvert.h"
 #include "sinewin.h"
 #include "wma.h"
+#include "wma_common.h"
 
 /** current decoder limitations */
 #define WMAPRO_MAX_CHANNELS    8                             ///< max number of handled channels