| /* |
| * 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/cpu.h" |
| #include "libavutil/file.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 "internal.h" |
| #include "libxvid.h" |
| #include "mpegutils.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; |
| #if FF_API_MOTION_EST |
| FF_DISABLE_DEPRECATION_WARNINGS |
| break; |
| default: |
| switch (avctx->me_method) { |
| case ME_FULL: /* Quality 6 */ |
| x->me_flags |= XVID_ME_EXTSEARCH16 | |
| XVID_ME_EXTSEARCH8; |
| case ME_EPZS: /* Quality 4 */ |
| x->me_flags |= XVID_ME_ADVANCEDDIAMOND8 | |
| XVID_ME_HALFPELREFINE8 | |
| XVID_ME_CHROMA_PVOP | |
| XVID_ME_CHROMA_BVOP; |
| case ME_LOG: /* Quality 2 */ |
| case ME_PHODS: |
| case ME_X1: |
| x->me_flags |= XVID_ME_ADVANCEDDIAMOND16 | |
| XVID_ME_HALFPELREFINE16; |
| case ME_ZERO: /* Quality 0 */ |
| default: |
| break; |
| } |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| } |
| |
| /* 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 */ |
| #if FF_API_GMC |
| if (avctx->flags & CODEC_FLAG_GMC) |
| x->gmc = 1; |
| #endif |
| |
| 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 FF_API_PRIVATE_OPT |
| FF_DISABLE_DEPRECATION_WARNINGS |
| if (avctx->mpeg_quant) |
| x->mpeg_quant = avctx->mpeg_quant; |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| |
| 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; |
| avctx->codec_id = AV_CODEC_ID_MPEG4; |
| } 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 = {0}; |
| int size, got_packet, ret; |
| |
| av_init_packet(&packet); |
| |
| picture = av_frame_alloc(); |
| if (!picture) |
| return AVERROR(ENOMEM); |
| |
| xerr = xvid_encore(NULL, XVID_ENC_CREATE, &xvid_enc_create, NULL); |
| if( xerr ) { |
| 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_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); |
| ret = xvid_encode_frame(avctx, &packet, picture, &got_packet); |
| if (!ret && got_packet) |
| av_packet_unref(&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, user_packet = !!pkt->data; |
| 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_packet2(avctx, pkt, mb_width*(int64_t)mb_height*MAX_MB_BYTES + AV_INPUT_BUFFER_MIN_SIZE, 0)) < 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; |
| |
| #if FF_API_CODED_FRAME |
| FF_DISABLE_DEPRECATION_WARNINGS |
| avctx->coded_frame->pict_type = pict_type; |
| avctx->coded_frame->quality = xvid_enc_stats.quant * FF_QP2LAMBDA; |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| |
| 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) { |
| #if FF_API_CODED_FRAME |
| FF_DISABLE_DEPRECATION_WARNINGS |
| avctx->coded_frame->key_frame = 1; |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| pkt->flags |= AV_PKT_FLAG_KEY; |
| if (x->quicktime_format) |
| return xvid_strip_vol_header(avctx, pkt, |
| xvid_enc_stats.hlength, xerr); |
| } else { |
| #if FF_API_CODED_FRAME |
| FF_DISABLE_DEPRECATION_WARNINGS |
| avctx->coded_frame->key_frame = 0; |
| FF_ENABLE_DEPRECATION_WARNINGS |
| #endif |
| } |
| |
| pkt->size = xerr; |
| |
| return 0; |
| } else { |
| if (!user_packet) |
| av_packet_unref(pkt); |
| 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; |
| } |
| |
| av_freep(&avctx->extradata); |
| 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, "ssim" }, |
| { "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, VE, "ssim" }, |
| { "avg", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, VE, "ssim" }, |
| { "frame", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 2 }, INT_MIN, INT_MAX, VE, "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 = 0 }, 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, |
| }; |
| |
| AVCodec ff_libxvid_encoder = { |
| .name = "libxvid", |
| .long_name = NULL_IF_CONFIG_SMALL("libxvidcore MPEG-4 part 2"), |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = AV_CODEC_ID_MPEG4, |
| .priv_data_size = sizeof(struct xvid_context), |
| .init = xvid_encode_init, |
| .encode2 = xvid_encode_frame, |
| .close = xvid_encode_close, |
| .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, |
| .priv_class = &xvid_class, |
| .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | |
| FF_CODEC_CAP_INIT_CLEANUP, |
| }; |
