| /* | |
| * Interface to xvidcore for MPEG-4 encoding | |
| * Copyright (c) 2004 Adam Thayer <krevnik@comcast.net> | |
| * | |
| * This file is part of FFmpeg. | |
| * | |
| * FFmpeg 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, | |
| * 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 | |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| */ | |
| /** | |
| * @file | |
| * Interface to xvidcore for MPEG-4 compliant encoding. | |
| * @author Adam Thayer (krevnik@comcast.net) | |
| */ | |
| #include <stdio.h> | |
| #include <string.h> | |
| #include <xvid.h> | |
| #include "libavutil/avassert.h" | |
| #include "libavutil/file_open.h" | |
| #include "libavutil/internal.h" | |
| #include "libavutil/intreadwrite.h" | |
| #include "libavutil/mathematics.h" | |
| #include "libavutil/mem.h" | |
| #include "libavutil/opt.h" | |
| #include "avcodec.h" | |
| #include "codec_internal.h" | |
| #include "encode.h" | |
| #include "mpegutils.h" | |
| #include "packet_internal.h" | |
| #if HAVE_UNISTD_H | |
| #include <unistd.h> | |
| #endif | |
| #if HAVE_IO_H | |
| #include <io.h> | |
| #endif | |
| /** | |
| * Buffer management macros. | |
| */ | |
| #define BUFFER_SIZE 1024 | |
| #define BUFFER_REMAINING(x) (BUFFER_SIZE - strlen(x)) | |
| #define BUFFER_CAT(x) (&((x)[strlen(x)])) | |
| /** | |
| * Structure for the private Xvid context. | |
| * This stores all the private context for the codec. | |
| */ | |
| struct xvid_context { | |
| AVClass *class; | |
| 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? */ | |
| char *twopassbuffer; /**< Character buffer for two-pass */ | |
| char *old_twopassbuffer; /**< Old character buffer (two-pass) */ | |
| char *twopassfile; /**< second pass temp file name */ | |
| int twopassfd; | |
| unsigned char *intra_matrix; /**< P-Frame Quant Matrix */ | |
| unsigned char *inter_matrix; /**< I-Frame Quant Matrix */ | |
| int lumi_aq; /**< Lumi masking as an aq method */ | |
| int variance_aq; /**< Variance adaptive quantization */ | |
| int ssim; /**< SSIM information display mode */ | |
| int ssim_acc; /**< SSIM accuracy. 0: accurate. 4: fast. */ | |
| int gmc; | |
| int me_quality; /**< Motion estimation quality. 0: fast 6: best. */ | |
| int mpeg_quant; /**< Quantization type. 0: H.263, 1: MPEG */ | |
| }; | |
| /** | |
| * Structure for the private first-pass plugin. | |
| */ | |
| struct xvid_ff_pass1 { | |
| int version; /**< Xvid version */ | |
| struct xvid_context *context; /**< Pointer to private context */ | |
| }; | |
| static int xvid_encode_close(AVCodecContext *avctx); | |
| static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt, | |
| const AVFrame *picture, int *got_packet); | |
| /* | |
| * Xvid 2-Pass Kludge Section | |
| * | |
| * 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 | |
| * rate-control plugin. | |
| */ | |
| /** | |
| * Initialize the two-pass plugin and context. | |
| * | |
| * @param param Input construction parameter structure | |
| * @param handle Private context handle | |
| * @return Returns XVID_ERR_xxxx on failure, or 0 on success. | |
| */ | |
| static int xvid_ff_2pass_create(xvid_plg_create_t *param, void **handle) | |
| { | |
| struct xvid_ff_pass1 *x = (struct xvid_ff_pass1 *) param->param; | |
| char *log = x->context->twopassbuffer; | |
| /* Do a quick bounds check */ | |
| if (!log) | |
| return XVID_ERR_FAIL; | |
| /* We use snprintf() */ | |
| /* 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"); | |
| snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log), | |
| "# Do not modify. libxvidcore version: %d.%d.%d\n\n", | |
| XVID_VERSION_MAJOR(XVID_VERSION), | |
| XVID_VERSION_MINOR(XVID_VERSION), | |
| XVID_VERSION_PATCH(XVID_VERSION)); | |
| *handle = x->context; | |
| return 0; | |
| } | |
| /** | |
| * Destroy the two-pass plugin context. | |
| * | |
| * @param ref Context pointer for the plugin | |
| * @param param Destroy context | |
| * @return Returns 0, success guaranteed | |
| */ | |
| 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 */ | |
| if (ref->twopassbuffer) | |
| ref->twopassbuffer[0] = 0; | |
| return 0; | |
| } | |
| /** | |
| * 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(struct xvid_context *ref, | |
| xvid_plg_data_t *param) | |
| { | |
| int motion_remove; | |
| int motion_replacements; | |
| int vop_remove; | |
| /* Nothing to do here, result is changed too much */ | |
| if (param->zone && param->zone->mode == XVID_ZONE_QUANT) | |
| return 0; | |
| /* We can implement a 'turbo' first pass mode here */ | |
| param->quant = 2; | |
| /* Init values */ | |
| motion_remove = ~XVID_ME_CHROMA_PVOP & | |
| ~XVID_ME_CHROMA_BVOP & | |
| ~XVID_ME_EXTSEARCH16 & | |
| ~XVID_ME_ADVANCEDDIAMOND16; | |
| motion_replacements = XVID_ME_FAST_MODEINTERPOLATE | | |
| XVID_ME_SKIP_DELTASEARCH | | |
| XVID_ME_FASTREFINE16 | | |
| XVID_ME_BFRAME_EARLYSTOP; | |
| vop_remove = ~XVID_VOP_MODEDECISION_RD & | |
| ~XVID_VOP_FAST_MODEDECISION_RD & | |
| ~XVID_VOP_TRELLISQUANT & | |
| ~XVID_VOP_INTER4V & | |
| ~XVID_VOP_HQACPRED; | |
| param->vol_flags &= ~XVID_VOL_GMC; | |
| param->vop_flags &= vop_remove; | |
| param->motion_flags &= motion_remove; | |
| param->motion_flags |= motion_replacements; | |
| return 0; | |
| } | |
| /** | |
| * 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(struct xvid_context *ref, | |
| xvid_plg_data_t *param) | |
| { | |
| char *log = ref->twopassbuffer; | |
| const char *frame_types = " ipbs"; | |
| char frame_type; | |
| /* Quick bounds check */ | |
| if (!log) | |
| return XVID_ERR_FAIL; | |
| /* Convert the type given to us into a character */ | |
| if (param->type < 5 && param->type > 0) | |
| frame_type = frame_types[param->type]; | |
| else | |
| return XVID_ERR_FAIL; | |
| snprintf(BUFFER_CAT(log), BUFFER_REMAINING(log), | |
| "%c %d %d %d %d %d %d\n", | |
| frame_type, param->stats.quant, param->stats.kblks, | |
| param->stats.mblks, param->stats.ublks, | |
| param->stats.length, param->stats.hlength); | |
| return 0; | |
| } | |
| /** | |
| * Dispatch function for our custom plugin. | |
| * 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 | |
| * @param cmd The task given for us to complete | |
| * @param p1 First parameter (varies) | |
| * @param p2 Second parameter (varies) | |
| * @return Returns XVID_ERR_xxxx on failure, or 0 on success | |
| */ | |
| static int xvid_ff_2pass(void *ref, int cmd, void *p1, void *p2) | |
| { | |
| switch (cmd) { | |
| case XVID_PLG_INFO: | |
| case XVID_PLG_FRAME: | |
| return 0; | |
| case XVID_PLG_BEFORE: | |
| return xvid_ff_2pass_before(ref, p1); | |
| case XVID_PLG_CREATE: | |
| return xvid_ff_2pass_create(p1, p2); | |
| case XVID_PLG_AFTER: | |
| return xvid_ff_2pass_after(ref, p1); | |
| case XVID_PLG_DESTROY: | |
| return xvid_ff_2pass_destroy(ref, p1); | |
| default: | |
| return XVID_ERR_FAIL; | |
| } | |
| } | |
| /** | |
| * Routine to create a global VO/VOL header for MP4 container. | |
| * 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. | |
| * | |
| * @param avctx AVCodecContext pointer to context | |
| * @param frame Pointer to encoded frame data | |
| * @param header_len Length of header to search | |
| * @param frame_len Length of encoded frame data | |
| * @return Returns new length of frame data | |
| */ | |
| static int xvid_strip_vol_header(AVCodecContext *avctx, AVPacket *pkt, | |
| unsigned int header_len, | |
| unsigned int frame_len) | |
| { | |
| int vo_len = 0, i; | |
| for (i = 0; i < header_len - 3; i++) { | |
| if (pkt->data[i] == 0x00 && | |
| pkt->data[i + 1] == 0x00 && | |
| pkt->data[i + 2] == 0x01 && | |
| pkt->data[i + 3] == 0xB6) { | |
| vo_len = i; | |
| break; | |
| } | |
| } | |
| if (vo_len > 0) { | |
| /* We need to store the header, so extract it */ | |
| if (!avctx->extradata) { | |
| avctx->extradata = av_malloc(vo_len); | |
| if (!avctx->extradata) | |
| return AVERROR(ENOMEM); | |
| memcpy(avctx->extradata, pkt->data, vo_len); | |
| avctx->extradata_size = vo_len; | |
| } | |
| /* Less dangerous now, memmove properly copies the two | |
| * chunks of overlapping data */ | |
| memmove(pkt->data, &pkt->data[vo_len], frame_len - vo_len); | |
| pkt->size = frame_len - vo_len; | |
| } | |
| return 0; | |
| } | |
| /** | |
| * Routine to correct a possibly erroneous framerate being fed to us. | |
| * 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. | |
| * | |
| * @param avctx Context that contains the framerate to correct. | |
| */ | |
| static void xvid_correct_framerate(AVCodecContext *avctx) | |
| { | |
| int frate, fbase; | |
| int est_frate, est_fbase; | |
| int gcd; | |
| float est_fps, fps; | |
| frate = avctx->time_base.den; | |
| fbase = avctx->time_base.num; | |
| gcd = av_gcd(frate, fbase); | |
| if (gcd > 1) { | |
| frate /= gcd; | |
| fbase /= gcd; | |
| } | |
| if (frate <= 65000 && fbase <= 65000) { | |
| avctx->time_base.den = frate; | |
| avctx->time_base.num = fbase; | |
| return; | |
| } | |
| fps = (float) frate / (float) fbase; | |
| est_fps = roundf(fps * 1000.0) / 1000.0; | |
| est_frate = (int) est_fps; | |
| if (est_fps > (int) est_fps) { | |
| est_frate = (est_frate + 1) * 1000; | |
| est_fbase = (int) roundf((float) est_frate / est_fps); | |
| } else | |
| est_fbase = 1; | |
| gcd = av_gcd(est_frate, est_fbase); | |
| if (gcd > 1) { | |
| est_frate /= gcd; | |
| est_fbase /= gcd; | |
| } | |
| if (fbase > est_fbase) { | |
| 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", | |
| est_fps, (((est_fps - fps) / fps) * 100.0)); | |
| } else { | |
| avctx->time_base.den = frate; | |
| avctx->time_base.num = fbase; | |
| } | |
| } | |
| static av_cold int xvid_encode_init(AVCodecContext *avctx) | |
| { | |
| int xerr, i, ret = -1; | |
| int xvid_flags = avctx->flags; | |
| struct xvid_context *x = avctx->priv_data; | |
| uint16_t *intra, *inter; | |
| int fd; | |
| xvid_plugin_single_t single = { 0 }; | |
| struct xvid_ff_pass1 rc2pass1 = { 0 }; | |
| xvid_plugin_2pass2_t rc2pass2 = { 0 }; | |
| xvid_plugin_lumimasking_t masking_l = { 0 }; /* For lumi masking */ | |
| xvid_plugin_lumimasking_t masking_v = { 0 }; /* For variance AQ */ | |
| xvid_plugin_ssim_t ssim = { 0 }; | |
| xvid_gbl_init_t xvid_gbl_init = { 0 }; | |
| xvid_enc_create_t xvid_enc_create = { 0 }; | |
| xvid_enc_plugin_t plugins[4]; | |
| x->twopassfd = -1; | |
| /* Bring in VOP flags from ffmpeg command-line */ | |
| x->vop_flags = XVID_VOP_HALFPEL; /* Bare minimum quality */ | |
| if (xvid_flags & AV_CODEC_FLAG_4MV) | |
| x->vop_flags |= XVID_VOP_INTER4V; /* Level 3 */ | |
| if (avctx->trellis) | |
| x->vop_flags |= XVID_VOP_TRELLISQUANT; /* Level 5 */ | |
| if (xvid_flags & AV_CODEC_FLAG_AC_PRED) | |
| x->vop_flags |= XVID_VOP_HQACPRED; /* Level 6 */ | |
| if (xvid_flags & AV_CODEC_FLAG_GRAY) | |
| x->vop_flags |= XVID_VOP_GREYSCALE; | |
| /* Decide which ME quality setting to use */ | |
| x->me_flags = 0; | |
| switch (x->me_quality) { | |
| case 6: | |
| case 5: | |
| x->me_flags |= XVID_ME_EXTSEARCH16 | | |
| XVID_ME_EXTSEARCH8; | |
| case 4: | |
| case 3: | |
| x->me_flags |= XVID_ME_ADVANCEDDIAMOND8 | | |
| XVID_ME_HALFPELREFINE8 | | |
| XVID_ME_CHROMA_PVOP | | |
| XVID_ME_CHROMA_BVOP; | |
| case 2: | |
| case 1: | |
| x->me_flags |= XVID_ME_ADVANCEDDIAMOND16 | | |
| XVID_ME_HALFPELREFINE16; | |
| } | |
| /* Decide how we should decide blocks */ | |
| switch (avctx->mb_decision) { | |
| case 2: | |
| x->vop_flags |= XVID_VOP_MODEDECISION_RD; | |
| x->me_flags |= XVID_ME_HALFPELREFINE8_RD | | |
| XVID_ME_QUARTERPELREFINE8_RD | | |
| XVID_ME_EXTSEARCH_RD | | |
| XVID_ME_CHECKPREDICTION_RD; | |
| case 1: | |
| if (!(x->vop_flags & XVID_VOP_MODEDECISION_RD)) | |
| x->vop_flags |= XVID_VOP_FAST_MODEDECISION_RD; | |
| x->me_flags |= XVID_ME_HALFPELREFINE16_RD | | |
| XVID_ME_QUARTERPELREFINE16_RD; | |
| default: | |
| break; | |
| } | |
| /* Bring in VOL flags from ffmpeg command-line */ | |
| x->vol_flags = 0; | |
| if (x->gmc) { | |
| x->vol_flags |= XVID_VOL_GMC; | |
| x->me_flags |= XVID_ME_GME_REFINE; | |
| } | |
| if (xvid_flags & AV_CODEC_FLAG_QPEL) { | |
| x->vol_flags |= XVID_VOL_QUARTERPEL; | |
| x->me_flags |= XVID_ME_QUARTERPELREFINE16; | |
| if (x->vop_flags & XVID_VOP_INTER4V) | |
| x->me_flags |= XVID_ME_QUARTERPELREFINE8; | |
| } | |
| xvid_gbl_init.version = XVID_VERSION; | |
| xvid_gbl_init.debug = 0; | |
| xvid_gbl_init.cpu_flags = 0; | |
| /* Initialize */ | |
| xvid_global(NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL); | |
| /* Create the encoder reference */ | |
| xvid_enc_create.version = XVID_VERSION; | |
| /* Store the desired frame size */ | |
| 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_enc_create.profile = XVID_PROFILE_S_L3; */ | |
| /* We don't use zones */ | |
| xvid_enc_create.zones = NULL; | |
| xvid_enc_create.num_zones = 0; | |
| xvid_enc_create.num_threads = avctx->thread_count; | |
| #if (XVID_VERSION <= 0x010303) && (XVID_VERSION >= 0x010300) | |
| /* workaround for a bug in libxvidcore */ | |
| if (avctx->height <= 16) { | |
| if (avctx->thread_count < 2) { | |
| xvid_enc_create.num_threads = 0; | |
| } else { | |
| av_log(avctx, AV_LOG_ERROR, | |
| "Too small height for threads > 1."); | |
| return AVERROR(EINVAL); | |
| } | |
| } | |
| #endif | |
| xvid_enc_create.plugins = plugins; | |
| xvid_enc_create.num_plugins = 0; | |
| /* Initialize Buffers */ | |
| x->twopassbuffer = NULL; | |
| x->old_twopassbuffer = NULL; | |
| x->twopassfile = NULL; | |
| if (xvid_flags & AV_CODEC_FLAG_PASS1) { | |
| rc2pass1.version = XVID_VERSION; | |
| rc2pass1.context = x; | |
| x->twopassbuffer = av_malloc(BUFFER_SIZE); | |
| x->old_twopassbuffer = av_malloc(BUFFER_SIZE); | |
| if (!x->twopassbuffer || !x->old_twopassbuffer) { | |
| av_log(avctx, AV_LOG_ERROR, | |
| "Xvid: Cannot allocate 2-pass log buffers\n"); | |
| return AVERROR(ENOMEM); | |
| } | |
| x->twopassbuffer[0] = | |
| x->old_twopassbuffer[0] = 0; | |
| plugins[xvid_enc_create.num_plugins].func = xvid_ff_2pass; | |
| plugins[xvid_enc_create.num_plugins].param = &rc2pass1; | |
| xvid_enc_create.num_plugins++; | |
| } else if (xvid_flags & AV_CODEC_FLAG_PASS2) { | |
| rc2pass2.version = XVID_VERSION; | |
| rc2pass2.bitrate = avctx->bit_rate; | |
| fd = avpriv_tempfile("xvidff.", &x->twopassfile, 0, avctx); | |
| if (fd < 0) { | |
| av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write 2-pass pipe\n"); | |
| return fd; | |
| } | |
| x->twopassfd = fd; | |
| if (!avctx->stats_in) { | |
| av_log(avctx, AV_LOG_ERROR, | |
| "Xvid: No 2-pass information loaded for second pass\n"); | |
| return AVERROR(EINVAL); | |
| } | |
| ret = write(fd, avctx->stats_in, strlen(avctx->stats_in)); | |
| if (ret == -1) | |
| ret = AVERROR(errno); | |
| else if (strlen(avctx->stats_in) > ret) { | |
| av_log(avctx, AV_LOG_ERROR, "Xvid: Cannot write to 2-pass pipe\n"); | |
| ret = AVERROR(EIO); | |
| } | |
| if (ret < 0) | |
| return ret; | |
| rc2pass2.filename = x->twopassfile; | |
| plugins[xvid_enc_create.num_plugins].func = xvid_plugin_2pass2; | |
| plugins[xvid_enc_create.num_plugins].param = &rc2pass2; | |
| xvid_enc_create.num_plugins++; | |
| } else if (!(xvid_flags & AV_CODEC_FLAG_QSCALE)) { | |
| /* Single Pass Bitrate Control! */ | |
| single.version = XVID_VERSION; | |
| single.bitrate = avctx->bit_rate; | |
| plugins[xvid_enc_create.num_plugins].func = xvid_plugin_single; | |
| plugins[xvid_enc_create.num_plugins].param = &single; | |
| xvid_enc_create.num_plugins++; | |
| } | |
| if (avctx->lumi_masking != 0.0) | |
| x->lumi_aq = 1; | |
| /* Luminance Masking */ | |
| if (x->lumi_aq) { | |
| masking_l.method = 0; | |
| plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking; | |
| /* The old behavior is that when avctx->lumi_masking is specified, | |
| * plugins[...].param = NULL. Trying to keep the old behavior here. */ | |
| plugins[xvid_enc_create.num_plugins].param = | |
| avctx->lumi_masking ? NULL : &masking_l; | |
| xvid_enc_create.num_plugins++; | |
| } | |
| /* Variance AQ */ | |
| if (x->variance_aq) { | |
| masking_v.method = 1; | |
| plugins[xvid_enc_create.num_plugins].func = xvid_plugin_lumimasking; | |
| plugins[xvid_enc_create.num_plugins].param = &masking_v; | |
| xvid_enc_create.num_plugins++; | |
| } | |
| if (x->lumi_aq && x->variance_aq ) | |
| av_log(avctx, AV_LOG_INFO, | |
| "Both lumi_aq and variance_aq are enabled. The resulting quality" | |
| "will be the worse one of the two effects made by the AQ.\n"); | |
| /* SSIM */ | |
| if (x->ssim) { | |
| plugins[xvid_enc_create.num_plugins].func = xvid_plugin_ssim; | |
| ssim.b_printstat = x->ssim == 2; | |
| ssim.acc = x->ssim_acc; | |
| ssim.cpu_flags = xvid_gbl_init.cpu_flags; | |
| ssim.b_visualize = 0; | |
| plugins[xvid_enc_create.num_plugins].param = &ssim; | |
| xvid_enc_create.num_plugins++; | |
| } | |
| /* Frame Rate and Key Frames */ | |
| xvid_correct_framerate(avctx); | |
| xvid_enc_create.fincr = avctx->time_base.num; | |
| xvid_enc_create.fbase = avctx->time_base.den; | |
| 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 */ | |
| /* Quants */ | |
| if (xvid_flags & AV_CODEC_FLAG_QSCALE) | |
| x->qscale = 1; | |
| else | |
| x->qscale = 0; | |
| xvid_enc_create.min_quant[0] = avctx->qmin; | |
| xvid_enc_create.min_quant[1] = avctx->qmin; | |
| xvid_enc_create.min_quant[2] = avctx->qmin; | |
| xvid_enc_create.max_quant[0] = avctx->qmax; | |
| xvid_enc_create.max_quant[1] = avctx->qmax; | |
| xvid_enc_create.max_quant[2] = avctx->qmax; | |
| /* Quant Matrices */ | |
| x->intra_matrix = | |
| x->inter_matrix = NULL; | |
| if (x->mpeg_quant) | |
| x->vol_flags |= XVID_VOL_MPEGQUANT; | |
| if ((avctx->intra_matrix || avctx->inter_matrix)) { | |
| x->vol_flags |= XVID_VOL_MPEGQUANT; | |
| if (avctx->intra_matrix) { | |
| intra = avctx->intra_matrix; | |
| x->intra_matrix = av_malloc(sizeof(unsigned char) * 64); | |
| if (!x->intra_matrix) | |
| return AVERROR(ENOMEM); | |
| } else | |
| intra = NULL; | |
| if (avctx->inter_matrix) { | |
| inter = avctx->inter_matrix; | |
| x->inter_matrix = av_malloc(sizeof(unsigned char) * 64); | |
| if (!x->inter_matrix) | |
| return AVERROR(ENOMEM); | |
| } else | |
| inter = NULL; | |
| for (i = 0; i < 64; i++) { | |
| if (intra) | |
| x->intra_matrix[i] = (unsigned char) intra[i]; | |
| if (inter) | |
| x->inter_matrix[i] = (unsigned char) inter[i]; | |
| } | |
| } | |
| /* Misc Settings */ | |
| xvid_enc_create.frame_drop_ratio = 0; | |
| xvid_enc_create.global = 0; | |
| if (xvid_flags & AV_CODEC_FLAG_CLOSED_GOP) | |
| xvid_enc_create.global |= XVID_GLOBAL_CLOSED_GOP; | |
| /* Determines which codec mode we are operating in */ | |
| avctx->extradata = NULL; | |
| avctx->extradata_size = 0; | |
| if (xvid_flags & AV_CODEC_FLAG_GLOBAL_HEADER) { | |
| /* In this case, we are claiming to be MPEG-4 */ | |
| x->quicktime_format = 1; | |
| } else { | |
| /* We are claiming to be Xvid */ | |
| x->quicktime_format = 0; | |
| if (!avctx->codec_tag) | |
| avctx->codec_tag = AV_RL32("xvid"); | |
| } | |
| /* Bframes */ | |
| xvid_enc_create.max_bframes = avctx->max_b_frames; | |
| xvid_enc_create.bquant_offset = 100 * avctx->b_quant_offset; | |
| xvid_enc_create.bquant_ratio = 100 * avctx->b_quant_factor; | |
| if (avctx->max_b_frames > 0 && !x->quicktime_format) | |
| xvid_enc_create.global |= XVID_GLOBAL_PACKED; | |
| av_assert0(xvid_enc_create.num_plugins + (!!x->ssim) + (!!x->variance_aq) + (!!x->lumi_aq) <= FF_ARRAY_ELEMS(plugins)); | |
| /* Encode a dummy frame to get the extradata immediately */ | |
| if (x->quicktime_format) { | |
| AVFrame *picture; | |
| AVPacket *packet; | |
| int size, got_packet; | |
| packet = av_packet_alloc(); | |
| if (!packet) | |
| return AVERROR(ENOMEM); | |
| picture = av_frame_alloc(); | |
| if (!picture) { | |
| av_packet_free(&packet); | |
| return AVERROR(ENOMEM); | |
| } | |
| xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL); | |
| if( xerr ) { | |
| av_packet_free(&packet); | |
| av_frame_free(&picture); | |
| av_log(avctx, AV_LOG_ERROR, "Xvid: Could not create encoder reference\n"); | |
| return AVERROR_EXTERNAL; | |
| } | |
| x->encoder_handle = xvid_enc_create.handle; | |
| size = ((avctx->width + 1) & ~1) * ((avctx->height + 1) & ~1); | |
| picture->data[0] = av_malloc(size + size / 2); | |
| if (!picture->data[0]) { | |
| av_packet_free(&packet); | |
| av_frame_free(&picture); | |
| return AVERROR(ENOMEM); | |
| } | |
| picture->data[1] = picture->data[0] + size; | |
| picture->data[2] = picture->data[1] + size / 4; | |
| memset(picture->data[0], 0, size); | |
| memset(picture->data[1], 128, size / 2); | |
| xvid_encode_frame(avctx, packet, picture, &got_packet); | |
| av_packet_free(&packet); | |
| av_free(picture->data[0]); | |
| av_frame_free(&picture); | |
| xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL); | |
| } | |
| /* 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"); | |
| return AVERROR_EXTERNAL; | |
| } | |
| x->encoder_handle = xvid_enc_create.handle; | |
| return 0; | |
| } | |
| static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt, | |
| const AVFrame *picture, int *got_packet) | |
| { | |
| int xerr, i, ret; | |
| struct xvid_context *x = avctx->priv_data; | |
| int mb_width = (avctx->width + 15) / 16; | |
| int mb_height = (avctx->height + 15) / 16; | |
| char *tmp; | |
| xvid_enc_frame_t xvid_enc_frame = { 0 }; | |
| xvid_enc_stats_t xvid_enc_stats = { 0 }; | |
| if ((ret = ff_alloc_packet(avctx, pkt, mb_width*(int64_t)mb_height*MAX_MB_BYTES + FF_INPUT_BUFFER_MIN_SIZE)) < 0) | |
| return ret; | |
| /* Start setting up the frame */ | |
| xvid_enc_frame.version = XVID_VERSION; | |
| xvid_enc_stats.version = XVID_VERSION; | |
| /* Let Xvid know where to put the frame. */ | |
| xvid_enc_frame.bitstream = pkt->data; | |
| xvid_enc_frame.length = pkt->size; | |
| /* Initialize input image fields */ | |
| if (avctx->pix_fmt != AV_PIX_FMT_YUV420P) { | |
| av_log(avctx, AV_LOG_ERROR, | |
| "Xvid: Color spaces other than 420P not supported\n"); | |
| return AVERROR(EINVAL); | |
| } | |
| xvid_enc_frame.input.csp = XVID_CSP_PLANAR; /* YUV420P */ | |
| for (i = 0; i < 4; i++) { | |
| xvid_enc_frame.input.plane[i] = picture->data[i]; | |
| xvid_enc_frame.input.stride[i] = picture->linesize[i]; | |
| } | |
| /* Encoder Flags */ | |
| 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 = | |
| 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 < 0 || avctx->sample_aspect_ratio.num > 255 || | |
| avctx->sample_aspect_ratio.den < 0 || avctx->sample_aspect_ratio.den > 255) { | |
| av_log(avctx, AV_LOG_WARNING, | |
| "Invalid pixel aspect ratio %i/%i, limit is 255/255 reducing\n", | |
| avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den); | |
| av_reduce(&avctx->sample_aspect_ratio.num, &avctx->sample_aspect_ratio.den, | |
| avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, 255); | |
| } | |
| xvid_enc_frame.par = XVID_PAR_EXT; | |
| xvid_enc_frame.par_width = avctx->sample_aspect_ratio.num; | |
| xvid_enc_frame.par_height = avctx->sample_aspect_ratio.den; | |
| /* Quant Setting */ | |
| if (x->qscale) | |
| xvid_enc_frame.quant = picture->quality / FF_QP2LAMBDA; | |
| else | |
| xvid_enc_frame.quant = 0; | |
| /* Matrices */ | |
| xvid_enc_frame.quant_intra_matrix = x->intra_matrix; | |
| xvid_enc_frame.quant_inter_matrix = x->inter_matrix; | |
| /* Encode */ | |
| xerr = xvid_encore(x->encoder_handle, XVID_ENC_ENCODE, | |
| &xvid_enc_frame, &xvid_enc_stats); | |
| /* Two-pass log buffer swapping */ | |
| avctx->stats_out = NULL; | |
| if (x->twopassbuffer) { | |
| tmp = x->old_twopassbuffer; | |
| x->old_twopassbuffer = x->twopassbuffer; | |
| x->twopassbuffer = tmp; | |
| x->twopassbuffer[0] = 0; | |
| if (x->old_twopassbuffer[0] != 0) { | |
| avctx->stats_out = x->old_twopassbuffer; | |
| } | |
| } | |
| if (xerr > 0) { | |
| int pict_type; | |
| *got_packet = 1; | |
| if (xvid_enc_stats.type == XVID_TYPE_PVOP) | |
| pict_type = AV_PICTURE_TYPE_P; | |
| else if (xvid_enc_stats.type == XVID_TYPE_BVOP) | |
| pict_type = AV_PICTURE_TYPE_B; | |
| else if (xvid_enc_stats.type == XVID_TYPE_SVOP) | |
| pict_type = AV_PICTURE_TYPE_S; | |
| else | |
| pict_type = AV_PICTURE_TYPE_I; | |
| ff_side_data_set_encoder_stats(pkt, xvid_enc_stats.quant * FF_QP2LAMBDA, NULL, 0, pict_type); | |
| if (xvid_enc_frame.out_flags & XVID_KEYFRAME) { | |
| pkt->flags |= AV_PKT_FLAG_KEY; | |
| if (x->quicktime_format) | |
| return xvid_strip_vol_header(avctx, pkt, | |
| xvid_enc_stats.hlength, xerr); | |
| } | |
| pkt->size = xerr; | |
| return 0; | |
| } else { | |
| if (!xerr) | |
| return 0; | |
| av_log(avctx, AV_LOG_ERROR, | |
| "Xvid: Encoding Error Occurred: %i\n", xerr); | |
| return AVERROR_EXTERNAL; | |
| } | |
| } | |
| static av_cold int xvid_encode_close(AVCodecContext *avctx) | |
| { | |
| struct xvid_context *x = avctx->priv_data; | |
| if (x->encoder_handle) { | |
| xvid_encore(x->encoder_handle, XVID_ENC_DESTROY, NULL, NULL); | |
| x->encoder_handle = NULL; | |
| } | |
| if (x->twopassbuffer) { | |
| av_freep(&x->twopassbuffer); | |
| av_freep(&x->old_twopassbuffer); | |
| avctx->stats_out = NULL; | |
| } | |
| if (x->twopassfd>=0) { | |
| unlink(x->twopassfile); | |
| close(x->twopassfd); | |
| x->twopassfd = -1; | |
| } | |
| av_freep(&x->twopassfile); | |
| av_freep(&x->intra_matrix); | |
| av_freep(&x->inter_matrix); | |
| return 0; | |
| } | |
| #define OFFSET(x) offsetof(struct xvid_context, x) | |
| #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM | |
| static const AVOption options[] = { | |
| { "lumi_aq", "Luminance masking AQ", OFFSET(lumi_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, | |
| { "variance_aq", "Variance AQ", OFFSET(variance_aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, | |
| { "ssim", "Show SSIM information to stdout", OFFSET(ssim), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, VE, .unit = "ssim" }, | |
| { "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, .unit = "ssim" }, | |
| { "avg", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, .unit = "ssim" }, | |
| { "frame", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, .unit = "ssim" }, | |
| { "ssim_acc", "SSIM accuracy", OFFSET(ssim_acc), AV_OPT_TYPE_INT, { .i64 = 2 }, 0, 4, VE }, | |
| { "gmc", "use GMC", OFFSET(gmc), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, | |
| { "me_quality", "Motion estimation quality", OFFSET(me_quality), AV_OPT_TYPE_INT, { .i64 = 4 }, 0, 6, VE }, | |
| { "mpeg_quant", "Use MPEG quantizers instead of H.263", OFFSET(mpeg_quant), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE }, | |
| { NULL }, | |
| }; | |
| static const AVClass xvid_class = { | |
| .class_name = "libxvid", | |
| .item_name = av_default_item_name, | |
| .option = options, | |
| .version = LIBAVUTIL_VERSION_INT, | |
| }; | |
| const FFCodec ff_libxvid_encoder = { | |
| .p.name = "libxvid", | |
| CODEC_LONG_NAME("libxvidcore MPEG-4 part 2"), | |
| .p.type = AVMEDIA_TYPE_VIDEO, | |
| .p.id = AV_CODEC_ID_MPEG4, | |
| .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, | |
| .priv_data_size = sizeof(struct xvid_context), | |
| .init = xvid_encode_init, | |
| FF_CODEC_ENCODE_CB(xvid_encode_frame), | |
| .close = xvid_encode_close, | |
| .p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, | |
| .p.priv_class = &xvid_class, | |
| .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, | |
| .p.wrapper_name = "libxvid", | |
| }; |