* Interface to xvidcore for mpeg4 encoding
* Copyright (c) 2004 Adam Thayer <krevnik@comcast.net>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
- * @file xvidmpeg4.c
+ * @file
* Interface to xvidcore for MPEG-4 compliant encoding.
* @author Adam Thayer (krevnik@comcast.net)
*/
#include <xvid.h>
#include <unistd.h>
#include "avcodec.h"
+#include "libavutil/cpu.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/mathematics.h"
#include "libxvid_internal.h"
+#if !HAVE_MKSTEMP
+#include <fcntl.h>
+#endif
/**
* Buffer management macros.
#define BUFFER_REMAINING(x) (BUFFER_SIZE - strlen(x))
#define BUFFER_CAT(x) (&((x)[strlen(x)]))
-/* For PPC Use */
-extern int has_altivec(void);
-
/**
- * Structure for the private XviD context.
+ * Structure for the private Xvid context.
* This stores all the private context for the codec.
*/
-typedef struct xvid_context {
- void *encoder_handle; /** Handle for XviD Encoder */
- int xsize, ysize; /** Frame size */
- int vop_flags; /** VOP flags for XviD Encoder */
- int vol_flags; /** VOL flags for XviD Encoder */
- int me_flags; /** Motion Estimation flags */
- int qscale; /** Do we use constant scale? */
- int quicktime_format; /** Are we in a QT-based format? */
- AVFrame encoded_picture; /** Encoded frame information */
- char *twopassbuffer; /** Character buffer for two-pass */
- char *old_twopassbuffer; /** Old character buffer (two-pass) */
- char *twopassfile; /** second pass temp file name */
- unsigned char *intra_matrix; /** P-Frame Quant Matrix */
- unsigned char *inter_matrix; /** I-Frame Quant Matrix */
-} xvid_context_t;
+struct xvid_context {
+ void *encoder_handle; /**< Handle for Xvid encoder */
+ int xsize; /**< Frame x size */
+ int ysize; /**< Frame y size */
+ int vop_flags; /**< VOP flags for Xvid encoder */
+ int vol_flags; /**< VOL flags for Xvid encoder */
+ int me_flags; /**< Motion Estimation flags */
+ int qscale; /**< Do we use constant scale? */
+ int quicktime_format; /**< Are we in a QT-based format? */
+ AVFrame encoded_picture; /**< Encoded frame information */
+ char *twopassbuffer; /**< Character buffer for two-pass */
+ char *old_twopassbuffer; /**< Old character buffer (two-pass) */
+ char *twopassfile; /**< second pass temp file name */
+ unsigned char *intra_matrix; /**< P-Frame Quant Matrix */
+ unsigned char *inter_matrix; /**< I-Frame Quant Matrix */
+};
/**
* Structure for the private first-pass plugin.
*/
-typedef struct xvid_ff_pass1 {
- int version; /** XviD version */
- xvid_context_t *context; /** Pointer to private context */
-} xvid_ff_pass1_t;
+struct xvid_ff_pass1 {
+ int version; /**< Xvid version */
+ struct xvid_context *context; /**< Pointer to private context */
+};
/* Prototypes - See function implementation for details */
int xvid_strip_vol_header(AVCodecContext *avctx, unsigned char *frame, unsigned int header_len, unsigned int frame_len);
int xvid_ff_2pass(void *ref, int opt, void *p1, void *p2);
void xvid_correct_framerate(AVCodecContext *avctx);
+/* Wrapper to work around the lack of mkstemp() on mingw.
+ * Also, tries to create file in /tmp first, if possible.
+ * *prefix can be a character constant; *filename will be allocated internally.
+ * @return file descriptor of opened file (or -1 on error)
+ * and opened file name in **filename. */
+int ff_tempfile(const char *prefix, char **filename) {
+ int fd=-1;
+#if !HAVE_MKSTEMP
+ *filename = tempnam(".", prefix);
+#else
+ size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
+ *filename = av_malloc(len);
+#endif
+ /* -----common section-----*/
+ if (*filename == NULL) {
+ av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
+ return -1;
+ }
+#if !HAVE_MKSTEMP
+ fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
+#else
+ snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
+ fd = mkstemp(*filename);
+ if (fd < 0) {
+ snprintf(*filename, len, "./%sXXXXXX", prefix);
+ fd = mkstemp(*filename);
+ }
+#endif
+ /* -----common section-----*/
+ if (fd < 0) {
+ av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
+ return -1;
+ }
+ return fd; /* success */
+}
+
+#if CONFIG_LIBXVID_ENCODER
+
/**
- * Creates the private context for the encoder.
+ * Create the private context for the encoder.
* All buffers are allocated, settings are loaded from the user,
* and the encoder context created.
*
* @param avctx AVCodecContext pointer to context
* @return Returns 0 on success, -1 on failure
*/
-av_cold int ff_xvid_encode_init(AVCodecContext *avctx) {
+static av_cold int xvid_encode_init(AVCodecContext *avctx) {
int xerr, i;
int xvid_flags = avctx->flags;
- xvid_context_t *x = avctx->priv_data;
+ struct xvid_context *x = avctx->priv_data;
uint16_t *intra, *inter;
int fd;
xvid_plugin_single_t single;
- xvid_ff_pass1_t rc2pass1;
+ struct xvid_ff_pass1 rc2pass1;
xvid_plugin_2pass2_t rc2pass2;
xvid_gbl_init_t xvid_gbl_init;
xvid_enc_create_t xvid_enc_create;
xvid_enc_plugin_t plugins[7];
- /* Bring in VOP flags from ffmpeg command-line */
+ /* Bring in VOP flags from avconv command-line */
x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */
if( xvid_flags & CODEC_FLAG_4MV )
x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */
- if( xvid_flags & CODEC_FLAG_TRELLIS_QUANT)
+ if( avctx->trellis
+ )
x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */
if( xvid_flags & CODEC_FLAG_AC_PRED )
x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */
break;
}
- /* Bring in VOL flags from ffmpeg command-line */
+ /* Bring in VOL flags from avconv command-line */
x->vol_flags = 0;
if( xvid_flags & CODEC_FLAG_GMC ) {
x->vol_flags |= XVID_VOL_GMC;
xvid_gbl_init.version = XVID_VERSION;
xvid_gbl_init.debug = 0;
-#ifdef ARCH_POWERPC
- /* XviD's PPC support is borked, use libavcodec to detect */
-#ifdef HAVE_ALTIVEC
- if( has_altivec() ) {
+#if ARCH_PPC
+ /* Xvid's PPC support is borked, use libavcodec to detect */
+#if HAVE_ALTIVEC
+ if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
xvid_gbl_init.cpu_flags = XVID_CPU_FORCE | XVID_CPU_ALTIVEC;
} else
#endif
xvid_gbl_init.cpu_flags = XVID_CPU_FORCE;
#else
- /* XviD can detect on x86 */
+ /* Xvid can detect on x86 */
xvid_gbl_init.cpu_flags = 0;
#endif
xvid_enc_create.width = x->xsize = avctx->width;
xvid_enc_create.height = x->ysize = avctx->height;
- /* XviD can determine the proper profile to use */
+ /* Xvid can determine the proper profile to use */
/* xvid_enc_create.profile = XVID_PROFILE_S_L3; */
/* We don't use zones */
x->twopassfile = NULL;
if( xvid_flags & CODEC_FLAG_PASS1 ) {
- memset(&rc2pass1, 0, sizeof(xvid_ff_pass1_t));
+ memset(&rc2pass1, 0, sizeof(struct xvid_ff_pass1));
rc2pass1.version = XVID_VERSION;
rc2pass1.context = x;
x->twopassbuffer = av_malloc(BUFFER_SIZE);
x->old_twopassbuffer = av_malloc(BUFFER_SIZE);
if( x->twopassbuffer == NULL || x->old_twopassbuffer == NULL ) {
av_log(avctx, AV_LOG_ERROR,
- "XviD: Cannot allocate 2-pass log buffers\n");
+ "Xvid: Cannot allocate 2-pass log buffers\n");
return -1;
}
x->twopassbuffer[0] = x->old_twopassbuffer[0] = 0;
rc2pass2.version = XVID_VERSION;
rc2pass2.bitrate = avctx->bit_rate;
- fd = av_tempfile("xvidff.", &(x->twopassfile));
+ fd = ff_tempfile("xvidff.", &x->twopassfile);
if( fd == -1 ) {
av_log(avctx, AV_LOG_ERROR,
- "XviD: Cannot write 2-pass pipe\n");
+ "Xvid: Cannot write 2-pass pipe\n");
return -1;
}
if( avctx->stats_in == NULL ) {
av_log(avctx, AV_LOG_ERROR,
- "XviD: No 2-pass information loaded for second pass\n");
+ "Xvid: No 2-pass information loaded for second pass\n");
return -1;
}
write(fd, avctx->stats_in, strlen(avctx->stats_in)) ) {
close(fd);
av_log(avctx, AV_LOG_ERROR,
- "XviD: Cannot write to 2-pass pipe\n");
+ "Xvid: Cannot write to 2-pass pipe\n");
return -1;
}
if( avctx->gop_size > 0 )
xvid_enc_create.max_key_interval = avctx->gop_size;
else
- xvid_enc_create.max_key_interval = 240; /* XviD's best default */
+ xvid_enc_create.max_key_interval = 240; /* Xvid's best default */
/* Quants */
if( xvid_flags & CODEC_FLAG_QSCALE ) x->qscale = 1;
x->quicktime_format = 1;
avctx->codec_id = CODEC_ID_MPEG4;
} else {
- /* We are claiming to be XviD */
+ /* We are claiming to be Xvid */
x->quicktime_format = 0;
if(!avctx->codec_tag)
- avctx->codec_tag = ff_get_fourcc("xvid");
+ avctx->codec_tag = AV_RL32("xvid");
}
/* Bframes */
/* Create encoder context */
xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL);
if( xerr ) {
- av_log(avctx, AV_LOG_ERROR, "XviD: Could not create encoder reference\n");
+ av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n");
return -1;
}
}
/**
- * Encodes a single frame.
+ * Encode a single frame.
*
* @param avctx AVCodecContext pointer to context
* @param frame Pointer to encoded frame buffer
* @param data Pointer to AVFrame of unencoded frame
* @return Returns 0 on success, -1 on failure
*/
-int ff_xvid_encode_frame(AVCodecContext *avctx,
+static int xvid_encode_frame(AVCodecContext *avctx,
unsigned char *frame, int buf_size, void *data) {
int xerr, i;
char *tmp;
- xvid_context_t *x = avctx->priv_data;
+ struct xvid_context *x = avctx->priv_data;
AVFrame *picture = data;
- AVFrame *p = &(x->encoded_picture);
+ AVFrame *p = &x->encoded_picture;
xvid_enc_frame_t xvid_enc_frame;
xvid_enc_stats_t xvid_enc_stats;
xvid_enc_stats.version = XVID_VERSION;
*p = *picture;
- /* Let XviD know where to put the frame. */
+ /* Let Xvid know where to put the frame. */
xvid_enc_frame.bitstream = frame;
xvid_enc_frame.length = buf_size;
/* Initialize input image fields */
if( avctx->pix_fmt != PIX_FMT_YUV420P ) {
- av_log(avctx, AV_LOG_ERROR, "XviD: Color spaces other than 420p not supported\n");
+ av_log(avctx, AV_LOG_ERROR, "Xvid: Color spaces other than 420p not supported\n");
return -1;
}
xvid_enc_frame.vop_flags = x->vop_flags;
xvid_enc_frame.vol_flags = x->vol_flags;
xvid_enc_frame.motion = x->me_flags;
- xvid_enc_frame.type = XVID_TYPE_AUTO;
+ xvid_enc_frame.type =
+ picture->pict_type == AV_PICTURE_TYPE_I ? XVID_TYPE_IVOP :
+ picture->pict_type == AV_PICTURE_TYPE_P ? XVID_TYPE_PVOP :
+ picture->pict_type == AV_PICTURE_TYPE_B ? XVID_TYPE_BVOP :
+ XVID_TYPE_AUTO;
/* Pixel aspect ratio setting */
if (avctx->sample_aspect_ratio.num < 1 || avctx->sample_aspect_ratio.num > 255 ||
if( 0 <= xerr ) {
p->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
if( xvid_enc_stats.type == XVID_TYPE_PVOP )
- p->pict_type = FF_P_TYPE;
+ p->pict_type = AV_PICTURE_TYPE_P;
else if( xvid_enc_stats.type == XVID_TYPE_BVOP )
- p->pict_type = FF_B_TYPE;
+ p->pict_type = AV_PICTURE_TYPE_B;
else if( xvid_enc_stats.type == XVID_TYPE_SVOP )
- p->pict_type = FF_S_TYPE;
+ p->pict_type = AV_PICTURE_TYPE_S;
else
- p->pict_type = FF_I_TYPE;
+ p->pict_type = AV_PICTURE_TYPE_I;
if( xvid_enc_frame.out_flags & XVID_KEYFRAME ) {
p->key_frame = 1;
if( x->quicktime_format )
return xerr;
} else {
- av_log(avctx, AV_LOG_ERROR, "XviD: Encoding Error Occurred: %i\n", xerr);
+ av_log(avctx, AV_LOG_ERROR, "Xvid: Encoding Error Occurred: %i\n", xerr);
return -1;
}
}
/**
- * Destroys the private context for the encoder.
- * All buffers are freed, and the XviD encoder context is destroyed.
+ * Destroy the private context for the encoder.
+ * All buffers are freed, and the Xvid encoder context is destroyed.
*
* @param avctx AVCodecContext pointer to context
* @return Returns 0, success guaranteed
*/
-av_cold int ff_xvid_encode_close(AVCodecContext *avctx) {
- xvid_context_t *x = avctx->priv_data;
+static av_cold int xvid_encode_close(AVCodecContext *avctx) {
+ struct xvid_context *x = avctx->priv_data;
xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL);
- if( avctx->extradata != NULL )
- av_free(avctx->extradata);
+ av_freep(&avctx->extradata);
if( x->twopassbuffer != NULL ) {
av_free(x->twopassbuffer);
av_free(x->old_twopassbuffer);
}
- if( x->twopassfile != NULL )
- av_free(x->twopassfile);
- if( x->intra_matrix != NULL )
- av_free(x->intra_matrix);
- if( x->inter_matrix != NULL )
- av_free(x->inter_matrix);
+ av_free(x->twopassfile);
+ av_free(x->intra_matrix);
+ av_free(x->inter_matrix);
return 0;
}
/**
* Routine to create a global VO/VOL header for MP4 container.
- * What we do here is extract the header from the XviD bitstream
+ * What we do here is extract the header from the Xvid bitstream
* as it is encoded. We also strip the repeated headers from the
* bitstream when a global header is requested for MPEG-4 ISO
* compliance.
}
/* Less dangerous now, memmove properly copies the two
chunks of overlapping data */
- memmove(frame, &(frame[vo_len]), frame_len - vo_len);
+ memmove(frame, &frame[vo_len], frame_len - vo_len);
return frame_len - vo_len;
} else
return frame_len;
/**
* Routine to correct a possibly erroneous framerate being fed to us.
- * XviD currently chokes on framerates where the ticks per frame is
+ * Xvid currently chokes on framerates where the ticks per frame is
* extremely large. This function works to correct problems in this area
* by estimating a new framerate and taking the simpler fraction of
* the two presented.
frate = avctx->time_base.den;
fbase = avctx->time_base.num;
- gcd = ff_gcd(frate, fbase);
+ gcd = av_gcd(frate, fbase);
if( gcd > 1 ) {
frate /= gcd;
fbase /= gcd;
} else
est_fbase = 1;
- gcd = ff_gcd(est_frate, est_fbase);
+ gcd = av_gcd(est_frate, est_fbase);
if( gcd > 1 ) {
est_frate /= gcd;
est_fbase /= gcd;
avctx->time_base.den = est_frate;
avctx->time_base.num = est_fbase;
av_log(avctx, AV_LOG_DEBUG,
- "XviD: framerate re-estimated: %.2f, %.3f%% correction\n",
+ "Xvid: framerate re-estimated: %.2f, %.3f%% correction\n",
est_fps, (((est_fps - fps)/fps) * 100.0));
} else {
avctx->time_base.den = frate;
}
/*
- * XviD 2-Pass Kludge Section
+ * Xvid 2-Pass Kludge Section
*
- * XviD's default 2-pass doesn't allow us to create data as we need to, so
+ * Xvid's default 2-pass doesn't allow us to create data as we need to, so
* this section spends time replacing the first pass plugin so we can write
* statistic information as libavcodec requests in. We have another kludge
- * that allows us to pass data to the second pass in XviD without a custom
+ * that allows us to pass data to the second pass in Xvid without a custom
* rate-control plugin.
*/
/**
- * Initializes the two-pass plugin and context.
+ * Initialize the two-pass plugin and context.
*
* @param param Input construction parameter structure
* @param handle Private context handle
*/
static int xvid_ff_2pass_create(xvid_plg_create_t * param,
void ** handle) {
- xvid_ff_pass1_t *x = (xvid_ff_pass1_t *)param->param;
+ struct xvid_ff_pass1 *x = (struct xvid_ff_pass1 *)param->param;
char *log = x->context->twopassbuffer;
/* Do a quick bounds check */
/* This is because we can safely prevent a buffer overflow */
log[0] = 0;
snprintf(log, BUFFER_REMAINING(log),
- "# ffmpeg 2-pass log file, using xvid codec\n");
+ "# avconv 2-pass log file, using xvid codec\n");
snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log),
"# Do not modify. libxvidcore version: %d.%d.%d\n\n",
XVID_VERSION_MAJOR(XVID_VERSION),
}
/**
- * Destroys the two-pass plugin context.
+ * Destroy the two-pass plugin context.
*
* @param ref Context pointer for the plugin
* @param param Destrooy context
* @return Returns 0, success guaranteed
*/
-static int xvid_ff_2pass_destroy(xvid_context_t *ref,
+static int xvid_ff_2pass_destroy(struct xvid_context *ref,
xvid_plg_destroy_t *param) {
/* Currently cannot think of anything to do on destruction */
/* Still, the framework should be here for reference/use */
}
/**
- * Enables fast encode mode during the first pass.
+ * Enable fast encode mode during the first pass.
*
* @param ref Context pointer for the plugin
* @param param Frame data
* @return Returns 0, success guaranteed
*/
-static int xvid_ff_2pass_before(xvid_context_t *ref,
+static int xvid_ff_2pass_before(struct xvid_context *ref,
xvid_plg_data_t *param) {
int motion_remove;
int motion_replacements;
}
/**
- * Captures statistic data and writes it during first pass.
+ * Capture statistic data and write it during first pass.
*
* @param ref Context pointer for the plugin
* @param param Statistic data
* @return Returns XVID_ERR_xxxx on failure, or 0 on success
*/
-static int xvid_ff_2pass_after(xvid_context_t *ref,
+static int xvid_ff_2pass_after(struct xvid_context *ref,
xvid_plg_data_t *param) {
char *log = ref->twopassbuffer;
- char *frame_types = " ipbs";
+ const char *frame_types = " ipbs";
char frame_type;
/* Quick bounds check */
/**
* Dispatch function for our custom plugin.
- * This handles the dispatch for the XviD plugin. It passes data
+ * This handles the dispatch for the Xvid plugin. It passes data
* on to other functions for actual processing.
*
* @param ref Context pointer for the plugin
}
/**
- * XviD codec definition for libavcodec.
+ * Xvid codec definition for libavcodec.
*/
-AVCodec libxvid_encoder = {
- "libxvid",
- CODEC_TYPE_VIDEO,
- CODEC_ID_XVID,
- sizeof(xvid_context_t),
- ff_xvid_encode_init,
- ff_xvid_encode_frame,
- ff_xvid_encode_close,
- .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
+AVCodec ff_libxvid_encoder = {
+ .name = "libxvid",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = CODEC_ID_MPEG4,
+ .priv_data_size = sizeof(struct xvid_context),
+ .init = xvid_encode_init,
+ .encode = xvid_encode_frame,
+ .close = xvid_encode_close,
+ .pix_fmts= (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE},
+ .long_name= NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"),
};
+
+#endif /* CONFIG_LIBXVID_ENCODER */
projects / ffmpeg / blobdiff