ffmpeg: add upstream patches fixing MIPS compilation

Removed the Makefile references.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

multimedia/ffmpeg/Makefile

@@ -410,12 +410,6 @@ FFMPEG_CONFIGURE+= \
 	--disable-armv5te \
 	--disable-armv6 \
 	--disable-armv6t2 \
-	--disable-inline-asm \
-	--disable-mipsdsp \
-	--disable-mipsdspr2 \
-	--disable-mipsfpu \
-	--disable-msa \
-	--disable-mmi \
 	--disable-fast-unaligned \
 	--disable-runtime-cpudetect
 
@@ -428,13 +422,6 @@ FFMPEG_CONFIGURE+= \
 	--disable-altivec
 endif
 
-# libavcodec/mips/aacdec_mips.c build problem
-# XXX: disable use of assembly on MIPS. Patches welcome.
-ifneq ($(findstring mips,$(CONFIG_ARCH)),)
-FFMPEG_CONFIGURE+= \
-        --disable-asm --disable-inline-asm
-endif
-
 # selectively disable optimizations according to arch/cpu type
 ifneq ($(findstring arm,$(CONFIG_ARCH)),)
 	FFMPEG_CONFIGURE+= --enable-lto

multimedia/ffmpeg/patches/020-drawtext.patch

@@ -0,0 +1,31 @@
+From 8beb9e571ca6fb38d5f784bedd581398fb3da06f Mon Sep 17 00:00:00 2001
+From: Rosen Penev <rosenp@gmail.com>
+Date: Mon, 6 Apr 2020 17:38:59 -0700
+Subject: [PATCH] avfilter/vf_drawtext: only test available exceptions
+
+soft float systems do not define these macros under musl.
+
+Fixes: Ticket7102
+
+Signed-off-by: Rosen Penev <rosenp@gmail.com>
+---
+ libavfilter/vf_drawtext.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/libavfilter/vf_drawtext.c b/libavfilter/vf_drawtext.c
+index 887a686d16d..abe1ca6c35c 100644
+--- a/libavfilter/vf_drawtext.c
++++ b/libavfilter/vf_drawtext.c
+@@ -1083,10 +1083,12 @@ static int func_eval_expr_int_format(AVFilterContext *ctx, AVBPrint *bp,
+ 
+     feclearexcept(FE_ALL_EXCEPT);
+     intval = res;
++#if defined(FE_INVALID) && defined(FE_OVERFLOW) && defined(FE_UNDERFLOW)
+     if ((ret = fetestexcept(FE_INVALID|FE_OVERFLOW|FE_UNDERFLOW))) {
+         av_log(ctx, AV_LOG_ERROR, "Conversion of floating-point result to int failed. Control register: 0x%08x. Conversion result: %d\n", ret, intval);
+         return AVERROR(EINVAL);
+     }
++#endif
+ 
+     if (argc == 3)
+         av_strlcatf(fmt_str, sizeof(fmt_str), "0%u", positions);

multimedia/ffmpeg/patches/030-h264-mips.patch

@@ -0,0 +1,16 @@
+--- a/libavcodec/mips/cabac.h
++++ b/libavcodec/mips/cabac.h
+@@ -28,6 +28,7 @@
+ #include "libavutil/mips/mmiutils.h"
+ #include "config.h"
+ 
++#ifndef __mips16
+ #define get_cabac_inline get_cabac_inline_mips
+ static av_always_inline int get_cabac_inline(CABACContext *c,
+                                              uint8_t * const state){
+@@ -116,4 +117,5 @@ static av_always_inline int get_cabac_inline(CABACContext *c,
+     return bit;
+ }
+ 
++#endif
+ #endif /* AVCODEC_MIPS_CABAC_H */

multimedia/ffmpeg/patches/040-aac-mips.patch

@@ -0,0 +1,141 @@
+From 875ba2333340c2e13af370832e49c9371ffb0f91 Mon Sep 17 00:00:00 2001
+From: Rosen Penev <rosenp@gmail.com>
+Date: Sun, 5 Apr 2020 20:37:10 -0700
+Subject: [PATCH] avcodec/aacdec: fix compilation under soft float MIPS
+
+Place HAVE_MIPSFPU further up so that functions that use floating point
+ASM are defined away. Otherwise compilation failures result when soft
+float in enabled on the toolchain.
+
+Signed-off-by: Rosen Penev <rosenp@gmail.com>
+---
+ libavcodec/mips/aacdec_mips.c   | 4 ++--
+ libavcodec/mips/aacpsdsp_mips.c | 4 ++--
+ libavcodec/mips/aacsbr_mips.c   | 4 ++--
+ libavcodec/mips/sbrdsp_mips.c   | 4 ++--
+ 4 files changed, 8 insertions(+), 8 deletions(-)
+
+diff --git a/libavcodec/mips/aacdec_mips.c b/libavcodec/mips/aacdec_mips.c
+index 01a2b3087ba..8e306529351 100644
+--- a/libavcodec/mips/aacdec_mips.c
++++ b/libavcodec/mips/aacdec_mips.c
+@@ -59,6 +59,7 @@
+ #include "libavutil/mips/asmdefs.h"
+ 
+ #if HAVE_INLINE_ASM
++#if HAVE_MIPSFPU
+ static av_always_inline void float_copy(float *dst, const float *src, int count)
+ {
+     // Copy 'count' floats from src to dst
+@@ -282,7 +283,6 @@ static void apply_ltp_mips(AACContext *ac, SingleChannelElement *sce)
+     }
+ }
+ 
+-#if HAVE_MIPSFPU
+ static av_always_inline void fmul_and_reverse(float *dst, const float *src0, const float *src1, int count)
+ {
+     /* Multiply 'count' floats in src0 by src1 and store the results in dst in reverse */
+@@ -433,9 +433,9 @@ static void update_ltp_mips(AACContext *ac, SingleChannelElement *sce)
+ void ff_aacdec_init_mips(AACContext *c)
+ {
+ #if HAVE_INLINE_ASM
++#if HAVE_MIPSFPU
+     c->imdct_and_windowing         = imdct_and_windowing_mips;
+     c->apply_ltp                   = apply_ltp_mips;
+-#if HAVE_MIPSFPU
+     c->update_ltp                  = update_ltp_mips;
+ #endif /* HAVE_MIPSFPU */
+ #endif /* HAVE_INLINE_ASM */
+diff --git a/libavcodec/mips/aacpsdsp_mips.c b/libavcodec/mips/aacpsdsp_mips.c
+index 83fdc2f9dbd..ef47e31a9ea 100644
+--- a/libavcodec/mips/aacpsdsp_mips.c
++++ b/libavcodec/mips/aacpsdsp_mips.c
+@@ -57,6 +57,7 @@
+ #include "libavutil/mips/asmdefs.h"
+ 
+ #if HAVE_INLINE_ASM
++#if HAVE_MIPSFPU
+ static void ps_hybrid_analysis_ileave_mips(float (*out)[32][2], float L[2][38][64],
+                                         int i, int len)
+ {
+@@ -187,7 +188,6 @@ static void ps_hybrid_synthesis_deint_mips(float out[2][38][64],
+     }
+ }
+ 
+-#if HAVE_MIPSFPU
+ #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
+ static void ps_add_squares_mips(float *dst, const float (*src)[2], int n)
+ {
+@@ -450,9 +450,9 @@ static void ps_stereo_interpolate_mips(float (*l)[2], float (*r)[2],
+ void ff_psdsp_init_mips(PSDSPContext *s)
+ {
+ #if HAVE_INLINE_ASM
++#if HAVE_MIPSFPU
+     s->hybrid_analysis_ileave = ps_hybrid_analysis_ileave_mips;
+     s->hybrid_synthesis_deint = ps_hybrid_synthesis_deint_mips;
+-#if HAVE_MIPSFPU
+ #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
+     s->add_squares            = ps_add_squares_mips;
+     s->mul_pair_single        = ps_mul_pair_single_mips;
+diff --git a/libavcodec/mips/aacsbr_mips.c b/libavcodec/mips/aacsbr_mips.c
+index 56aa4e86822..2e0cd723d7e 100644
+--- a/libavcodec/mips/aacsbr_mips.c
++++ b/libavcodec/mips/aacsbr_mips.c
+@@ -58,6 +58,7 @@
+ #define ENVELOPE_ADJUSTMENT_OFFSET 2
+ 
+ #if HAVE_INLINE_ASM
++#if HAVE_MIPSFPU
+ static int sbr_lf_gen_mips(AACContext *ac, SpectralBandReplication *sbr,
+                       float X_low[32][40][2], const float W[2][32][32][2],
+                       int buf_idx)
+@@ -310,7 +311,6 @@ static int sbr_x_gen_mips(SpectralBandReplication *sbr, float X[2][38][64],
+       return 0;
+ }
+ 
+-#if HAVE_MIPSFPU
+ #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
+ static void sbr_hf_assemble_mips(float Y1[38][64][2],
+                             const float X_high[64][40][2],
+@@ -611,9 +611,9 @@ static void sbr_hf_inverse_filter_mips(SBRDSPContext *dsp,
+ void ff_aacsbr_func_ptr_init_mips(AACSBRContext *c)
+ {
+ #if HAVE_INLINE_ASM
++#if HAVE_MIPSFPU
+     c->sbr_lf_gen            = sbr_lf_gen_mips;
+     c->sbr_x_gen             = sbr_x_gen_mips;
+-#if HAVE_MIPSFPU
+ #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
+     c->sbr_hf_inverse_filter = sbr_hf_inverse_filter_mips;
+     c->sbr_hf_assemble       = sbr_hf_assemble_mips;
+diff --git a/libavcodec/mips/sbrdsp_mips.c b/libavcodec/mips/sbrdsp_mips.c
+index 1b0a10608de..83039fd802a 100644
+--- a/libavcodec/mips/sbrdsp_mips.c
++++ b/libavcodec/mips/sbrdsp_mips.c
+@@ -59,6 +59,7 @@
+ #include "libavutil/mips/asmdefs.h"
+ 
+ #if HAVE_INLINE_ASM
++#if HAVE_MIPSFPU
+ static void sbr_qmf_pre_shuffle_mips(float *z)
+ {
+     int Temp1, Temp2, Temp3, Temp4, Temp5, Temp6;
+@@ -165,7 +166,6 @@ static void sbr_qmf_post_shuffle_mips(float W[32][2], const float *z)
+     );
+ }
+ 
+-#if HAVE_MIPSFPU
+ #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
+ static void sbr_sum64x5_mips(float *z)
+ {
+@@ -890,9 +890,9 @@ static void sbr_hf_apply_noise_3_mips(float (*Y)[2], const float *s_m,
+ void ff_sbrdsp_init_mips(SBRDSPContext *s)
+ {
+ #if HAVE_INLINE_ASM
++#if HAVE_MIPSFPU
+     s->qmf_pre_shuffle = sbr_qmf_pre_shuffle_mips;
+     s->qmf_post_shuffle = sbr_qmf_post_shuffle_mips;
+-#if HAVE_MIPSFPU
+ #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6
+     s->sum64x5 = sbr_sum64x5_mips;
+     s->sum_square = sbr_sum_square_mips;