Drop libxvid rate control support for mpegvideo encoding

The feature has outlived is usefulness and complicates the code.

6 files changed, 30 insertions, 255 deletions

diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index eeac45d4c8..7bbc01c3b5 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -76,7 +76,6 @@ OBJS-$(CONFIG_IMDCT15)                 += imdct15.o
 OBJS-$(CONFIG_INTRAX8)                 += intrax8.o intrax8dsp.o
 OBJS-$(CONFIG_IVIDSP)                  += ivi_dsp.o
 OBJS-$(CONFIG_JPEGTABLES)              += jpegtables.o
-OBJS-$(CONFIG_LIBXVID)                 += libxvid_rc.o
 OBJS-$(CONFIG_LPC)                     += lpc.o
 OBJS-$(CONFIG_LSP)                     += lsp.o
 OBJS-$(CONFIG_LZF)                     += lzf.o
diff --git a/libavcodec/libxvid.c b/libavcodec/libxvid.c
index 9cbe9c17fa..1e8dc5d01b 100644
--- a/libavcodec/libxvid.c
+++ b/libavcodec/libxvid.c
@@ -26,6 +26,7 @@
  */
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
 #include <xvid.h>
@@ -39,7 +40,6 @@
 
 #include "avcodec.h"
 #include "internal.h"
-#include "libxvid.h"
 #include "mpegutils.h"
 
 /**
@@ -359,6 +359,33 @@ static void xvid_correct_framerate(AVCodecContext *avctx)
     }
 }
 
+/* Create temporary file using mkstemp(), tries /tmp first, if possible.
+ * *prefix can be a character constant; *filename will be allocated internally.
+ * Return file descriptor of opened file (or error code on error)
+ * and opened file name in **filename. */
+static int xvid_tempfile(AVCodecContext *avctx, const char *prefix,
+                         char **filename)
+{
+    int fd = -1;
+    size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
+    *filename  = av_malloc(len);
+    if (!(*filename)) {
+        av_log(avctx, AV_LOG_ERROR, "xvid_tempfile: Cannot allocate file name\n");
+        return AVERROR(ENOMEM);
+    }
+    snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
+    fd = mkstemp(*filename);
+    if (fd < 0) {
+        snprintf(*filename, len, "./%sXXXXXX", prefix);
+        fd = mkstemp(*filename);
+    }
+    if (fd < 0) {
+        av_log(avctx, AV_LOG_ERROR, "xvid_tempfile: Cannot open temporary file %s\n", *filename);
+        return AVERROR(EIO);
+    }
+    return fd; /* success */
+}
+
 static av_cold int xvid_encode_init(AVCodecContext *avctx)
 {
     int xerr, i;
@@ -519,7 +546,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
         rc2pass2.version = XVID_VERSION;
         rc2pass2.bitrate = avctx->bit_rate;
 
-        fd = ff_tempfile("xvidff.", &x->twopassfile);
+        fd = xvid_tempfile(avctx, "xvidff.", &x->twopassfile);
         if (fd < 0) {
             av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write 2-pass pipe\n");
             return fd;
diff --git a/libavcodec/libxvid.h b/libavcodec/libxvid.h
deleted file mode 100644
index 4535898530..0000000000
--- a/libavcodec/libxvid.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * copyright (C) 2006 Corey Hickey
- *
- * 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_LIBXVID_H
-#define AVCODEC_LIBXVID_H
-
-/**
- * @file
- * common functions for use with the Xvid wrappers
- */
-
-int ff_tempfile(const char *prefix, char **filename);
-
-struct MpegEncContext;
-
-/* rate control */
-int ff_xvid_rate_control_init(struct MpegEncContext *s);
-void ff_xvid_rate_control_uninit(struct MpegEncContext *s);
-float ff_xvid_rate_estimate_qscale(struct MpegEncContext *s, int dry_run);
-
-#endif /* AVCODEC_LIBXVID_H */
diff --git a/libavcodec/libxvid_rc.c b/libavcodec/libxvid_rc.c
deleted file mode 100644
index 94301a2ac1..0000000000
--- a/libavcodec/libxvid_rc.c
+++ /dev/null
@@ -1,181 +0,0 @@
-/*
- * Xvid rate control wrapper for lavc video encoders
- *
- * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
- *
- * 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 "config.h"
-
-#include <fcntl.h>
-#include <unistd.h>
-#include <xvid.h>
-
-#include "libavutil/attributes.h"
-#include "libavutil/internal.h"
-
-#include "avcodec.h"
-#include "libxvid.h"
-#include "mpegvideo.h"
-
-/* Create temporary file using mkstemp(), tries /tmp first, if possible.
- * *prefix can be a character constant; *filename will be allocated internally.
- * Return file descriptor of opened file (or error code on error)
- * and opened file name in **filename. */
-int ff_tempfile(const char *prefix, char **filename)
-{
-    int fd = -1;
-    size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
-    *filename  = av_malloc(len);
-    if (!(*filename)) {
-        av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
-        return AVERROR(ENOMEM);
-    }
-    snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
-    fd = mkstemp(*filename);
-    if (fd < 0) {
-        snprintf(*filename, len, "./%sXXXXXX", prefix);
-        fd = mkstemp(*filename);
-    }
-    if (fd < 0) {
-        av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
-        return AVERROR(EIO);
-    }
-    return fd; /* success */
-}
-
-av_cold int ff_xvid_rate_control_init(MpegEncContext *s)
-{
-    char *tmp_name;
-    int fd, i;
-    xvid_plg_create_t xvid_plg_create = { 0 };
-    xvid_plugin_2pass2_t xvid_2pass2  = { 0 };
-
-    fd = ff_tempfile("xvidrc.", &tmp_name);
-    if (fd < 0) {
-        av_log(s, AV_LOG_ERROR, "Cannot create temporary pass2 file.\n");
-        return fd;
-    }
-
-    for (i = 0; i < s->rc_context.num_entries; i++) {
-        static const char frame_types[] = " ipbs";
-        char tmp[256];
-        RateControlEntry *rce;
-
-        rce = &s->rc_context.entry[i];
-
-        snprintf(tmp, sizeof(tmp), "%c %d %d %d %d %d %d\n",
-                 frame_types[rce->pict_type],
-                 (int) lrintf(rce->qscale / FF_QP2LAMBDA),
-                 rce->i_count, s->mb_num - rce->i_count - rce->skip_count,
-                 rce->skip_count,
-                 (rce->i_tex_bits + rce->p_tex_bits + rce->misc_bits + 7) / 8,
-                 (rce->header_bits + rce->mv_bits + 7) / 8);
-
-        if (strlen(tmp) > write(fd, tmp, strlen(tmp))) {
-            av_log(s, AV_LOG_ERROR, "Cannot write to temporary pass2 file.\n");
-            return AVERROR(EIO);
-        }
-    }
-
-    close(fd);
-
-    xvid_2pass2.version     = XVID_MAKE_VERSION(1, 1, 0);
-    xvid_2pass2.filename    = tmp_name;
-    xvid_2pass2.bitrate     = s->avctx->bit_rate;
-    xvid_2pass2.vbv_size    = s->avctx->rc_buffer_size;
-    xvid_2pass2.vbv_maxrate = s->avctx->rc_max_rate;
-    xvid_2pass2.vbv_initial = s->avctx->rc_initial_buffer_occupancy;
-
-    xvid_plg_create.version = XVID_MAKE_VERSION(1, 1, 0);
-    xvid_plg_create.fbase   = s->avctx->time_base.den;
-    xvid_plg_create.fincr   = s->avctx->time_base.num;
-    xvid_plg_create.param   = &xvid_2pass2;
-
-    if (xvid_plugin_2pass2(NULL, XVID_PLG_CREATE, &xvid_plg_create,
-                           &s->rc_context.non_lavc_opaque) < 0) {
-        av_log(s, AV_LOG_ERROR, "xvid_plugin_2pass2 failed\n");
-        return -1;
-    }
-    return 0;
-}
-
-float ff_xvid_rate_estimate_qscale(MpegEncContext *s, int dry_run)
-{
-    xvid_plg_data_t xvid_plg_data = { 0 };
-
-    xvid_plg_data.version       = XVID_MAKE_VERSION(1, 1, 0);
-    xvid_plg_data.width         = s->width;
-    xvid_plg_data.height        = s->height;
-    xvid_plg_data.mb_width      = s->mb_width;
-    xvid_plg_data.mb_height     = s->mb_height;
-    xvid_plg_data.fbase         = s->avctx->time_base.den;
-    xvid_plg_data.fincr         = s->avctx->time_base.num;
-    xvid_plg_data.min_quant[0]  = s->avctx->qmin;
-    xvid_plg_data.min_quant[1]  = s->avctx->qmin;
-    xvid_plg_data.min_quant[2]  = s->avctx->qmin;   // FIXME i/b factor & offset
-    xvid_plg_data.max_quant[0]  = s->avctx->qmax;
-    xvid_plg_data.max_quant[1]  = s->avctx->qmax;
-    xvid_plg_data.max_quant[2]  = s->avctx->qmax;   // FIXME i/b factor & offset
-    xvid_plg_data.bquant_offset = 0;      //  100 * s->avctx->b_quant_offset;
-    xvid_plg_data.bquant_ratio  = 100;    //      * s->avctx->b_quant_factor;
-
-    if (!s->rc_context.dry_run_qscale) {
-        if (s->picture_number) {
-            xvid_plg_data.length        =
-            xvid_plg_data.stats.length  = (s->frame_bits + 7) / 8;
-            xvid_plg_data.frame_num     = s->rc_context.last_picture_number;
-            xvid_plg_data.quant         = s->qscale;
-            xvid_plg_data.type          = s->last_pict_type;
-            if (xvid_plugin_2pass2(s->rc_context.non_lavc_opaque,
-                                   XVID_PLG_AFTER, &xvid_plg_data, NULL)) {
-                av_log(s, AV_LOG_ERROR,
-                       "xvid_plugin_2pass2(handle, XVID_PLG_AFTER, ...) FAILED\n");
-                return -1;
-            }
-        }
-        s->rc_context.last_picture_number =
-        xvid_plg_data.frame_num           = s->picture_number;
-        xvid_plg_data.quant               = 0;
-        if (xvid_plugin_2pass2(s->rc_context.non_lavc_opaque,
-                               XVID_PLG_BEFORE, &xvid_plg_data, NULL)) {
-            av_log(s, AV_LOG_ERROR,
-                   "xvid_plugin_2pass2(handle, XVID_PLG_BEFORE, ...) FAILED\n");
-            return -1;
-        }
-        s->rc_context.dry_run_qscale = xvid_plg_data.quant;
-    }
-    xvid_plg_data.quant = s->rc_context.dry_run_qscale;
-    if (!dry_run)
-        s->rc_context.dry_run_qscale = 0;
-
-    // FIXME this is not exactly identical to Xvid
-    if (s->pict_type == AV_PICTURE_TYPE_B)
-        return xvid_plg_data.quant * FF_QP2LAMBDA * s->avctx->b_quant_factor +
-            s->avctx->b_quant_offset;
-    else
-        return xvid_plg_data.quant * FF_QP2LAMBDA;
-}
-
-av_cold void ff_xvid_rate_control_uninit(MpegEncContext *s)
-{
-    xvid_plg_destroy_t xvid_plg_destroy;
-
-    xvid_plugin_2pass2(s->rc_context.non_lavc_opaque, XVID_PLG_DESTROY,
-                       &xvid_plg_destroy, NULL);
-}
diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h
index 932a6f2b34..f096b8a0fa 100644
--- a/libavcodec/mpegvideo.h
+++ b/libavcodec/mpegvideo.h
@@ -356,7 +356,6 @@ typedef struct MpegEncContext {
     int prev_mb_info, last_mb_info;
     uint8_t *mb_info_ptr;
     int mb_info_size;
-    int rc_strategy;
 
     /* H.263+ specific */
     int umvplus;                    ///< == H.263+ && unrestricted_mv
@@ -602,8 +601,7 @@ FF_MPV_OPT_CMP_FUNC, \
 {"lmax", "maximum Lagrange factor (VBR)",                           FF_MPV_OFFSET(lmax), AV_OPT_TYPE_INT, {.i64 = 31*FF_QP2LAMBDA }, 0, INT_MAX, FF_MPV_OPT_FLAGS },            \
 {"ibias", "intra quant bias",                                       FF_MPV_OFFSET(intra_quant_bias), AV_OPT_TYPE_INT, {.i64 = FF_DEFAULT_QUANT_BIAS }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },   \
 {"pbias", "inter quant bias",                                       FF_MPV_OFFSET(inter_quant_bias), AV_OPT_TYPE_INT, {.i64 = FF_DEFAULT_QUANT_BIAS }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },   \
-{"rc_strategy", "ratecontrol method",                               FF_MPV_OFFSET(rc_strategy), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, FF_MPV_OPT_FLAGS },   \
-{"motion_est", "motion estimation algorithm",                       FF_MPV_OFFSET(motion_est), AV_OPT_TYPE_INT, {.i64 = FF_ME_EPZS }, FF_ME_ZERO, FF_ME_XONE, FF_MPV_OPT_FLAGS, "motion_est" },   \
+{"motion_est", "motion estimation algorithm",                       FF_MPV_OFFSET(motion_est), AV_OPT_TYPE_INT, {.i64 = FF_ME_EPZS }, FF_ME_ZERO, FF_ME_XONE, FF_MPV_OPT_FLAGS, "motion_est" }, \
 { "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
 { "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
 { "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, FF_MPV_OPT_FLAGS, "motion_est" }, \
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index 6a7c9e500f..40c044d703 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -60,7 +60,6 @@
 #include "bytestream.h"
 #include "wmv2.h"
 #include "rv10.h"
-#include "libxvid.h"
 #include <limits.h>
 
 #define QUANT_BIAS_SHIFT 8
@@ -872,28 +871,9 @@ FF_ENABLE_DEPRECATION_WARNINGS
                           31, 0);
     }
 
-#if FF_API_RC_STRATEGY
-FF_DISABLE_DEPRECATION_WARNINGS
-    if (!s->rc_strategy)
-        s->rc_strategy = s->avctx->rc_strategy;
-FF_ENABLE_DEPRECATION_WARNINGS
-#endif
-
     if (ff_rate_control_init(s) < 0)
         return -1;
 
-    if ((s->avctx->flags & AV_CODEC_FLAG_PASS2) && s->rc_strategy == 1) {
-#if CONFIG_LIBXVID
-        ret = ff_xvid_rate_control_init(s);
-#else
-        ret = AVERROR(ENOSYS);
-        av_log(s->avctx, AV_LOG_ERROR,
-               "Xvid ratecontrol requires libavcodec compiled with Xvid support.\n");
-#endif
-        if (ret < 0)
-            return ret;
-    }
-
 #if FF_API_ERROR_RATE
     FF_DISABLE_DEPRECATION_WARNINGS
     if (avctx->error_rate)
@@ -987,11 +967,6 @@ av_cold int ff_mpv_encode_end(AVCodecContext *avctx)
     int i;
 
     ff_rate_control_uninit(s);
-#if CONFIG_LIBXVID
-    if ((avctx->flags & AV_CODEC_FLAG_PASS2) && s->rc_strategy == 1)
-        ff_xvid_rate_control_uninit(s);
-#endif
-
     ff_mpv_common_end(s);
     if (CONFIG_MJPEG_ENCODER &&
         s->out_format == FMT_MJPEG)
@@ -3438,11 +3413,6 @@ static int estimate_qp(MpegEncContext *s, int dry_run){
         if(!dry_run) s->next_lambda= 0;
     } else if (!s->fixed_qscale) {
         int quality;
-#if CONFIG_LIBXVID
-        if ((s->avctx->flags & AV_CODEC_FLAG_PASS2) && s->rc_strategy == 1)
-            quality = ff_xvid_rate_estimate_qscale(s, dry_run);
-        else
-#endif
         quality = ff_rate_estimate_qscale(s, dry_run);
         s->current_picture_ptr->f->quality =
         s->current_picture.f->quality = quality;