virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-11-21 10:55:51 +02:00
Code Issues Releases Activity

Merge commit '7061bf0925a7d6c5899bbe710b2b8cdae9005274'

Browse Source 
* commit '7061bf0925a7d6c5899bbe710b2b8cdae9005274':
  mpegvideo: Move Picture-related functions to a separate file

Conflicts:
	libavcodec/mpegvideo.c
	libavcodec/mpegvideo.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-06-10 20:40:18 +02:00
commit 88679aeb08
5 changed files with 583 additions and 521 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/Makefile
View File

@ -88,7 +88,7 @@ OBJS-$(CONFIG_MPEGAUDIODSP) += mpegaudiodsp.o \
mpegaudiodsp_float.o
OBJS-$(CONFIG_MPEGVIDEO) += mpegvideo.o mpegvideodsp.o rl.o \
mpegvideo_motion.o mpegutils.o \
mpegvideodata.o
mpegvideodata.o mpegpicture.o
OBJS-$(CONFIG_MPEGVIDEOENC) += mpegvideo_enc.o mpeg12data.o \
motion_est.o ratecontrol.o \
mpegvideoencdsp.o

466
libavcodec/mpegpicture.c Normal file
View File

@ -0,0 +1,466 @@
/*
* Mpeg video formats-related picture management functions
*
* 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
*/
#include <stdint.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "avcodec.h"
#include "motion_est.h"
#include "mpegpicture.h"
#include "mpegutils.h"
static int make_tables_writable(Picture *pic)
{
int ret, i;
#define MAKE_WRITABLE(table) \
do {\
if (pic->table &&\
(ret = av_buffer_make_writable(&pic->table)) < 0)\
return ret;\
} while (0)
MAKE_WRITABLE(mb_var_buf);
MAKE_WRITABLE(mc_mb_var_buf);
MAKE_WRITABLE(mb_mean_buf);
MAKE_WRITABLE(mbskip_table_buf);
MAKE_WRITABLE(qscale_table_buf);
MAKE_WRITABLE(mb_type_buf);
for (i = 0; i < 2; i++) {
MAKE_WRITABLE(motion_val_buf[i]);
MAKE_WRITABLE(ref_index_buf[i]);
}
return 0;
}
int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
ScratchpadContext *sc, int linesize)
{
int alloc_size = FFALIGN(FFABS(linesize) + 64, 32);
if (avctx->hwaccel || avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
return 0;
if (linesize < 24) {
av_log(avctx, AV_LOG_ERROR, "Image too small, temporary buffers cannot function\n");
return AVERROR_PATCHWELCOME;
}
// edge emu needs blocksize + filter length - 1
// (= 17x17 for halfpel / 21x21 for h264)
// VC1 computes luma and chroma simultaneously and needs 19X19 + 9x9
// at uvlinesize. It supports only YUV420 so 24x24 is enough
// linesize * interlaced * MBsize
// we also use this buffer for encoding in encode_mb_internal() needig an additional 32 lines
FF_ALLOCZ_ARRAY_OR_GOTO(avctx, sc->edge_emu_buffer, alloc_size, 4 * 68,
fail);
FF_ALLOCZ_ARRAY_OR_GOTO(avctx, me->scratchpad, alloc_size, 4 * 16 * 2,
fail)
me->temp = me->scratchpad;
sc->rd_scratchpad = me->scratchpad;
sc->b_scratchpad = me->scratchpad;
sc->obmc_scratchpad = me->scratchpad + 16;
return 0;
fail:
av_freep(&sc->edge_emu_buffer);
return AVERROR(ENOMEM);
}
/**
* Allocate a frame buffer
*/
static int alloc_frame_buffer(AVCodecContext *avctx, Picture *pic,
MotionEstContext *me, ScratchpadContext *sc,
int chroma_x_shift, int chroma_y_shift,
int linesize, int uvlinesize)
{
int edges_needed = av_codec_is_encoder(avctx->codec);
int r, ret;
pic->tf.f = pic->f;
if (avctx->codec_id != AV_CODEC_ID_WMV3IMAGE &&
avctx->codec_id != AV_CODEC_ID_VC1IMAGE &&
avctx->codec_id != AV_CODEC_ID_MSS2) {
if (edges_needed) {
pic->f->width = avctx->width + 2 * EDGE_WIDTH;
pic->f->height = avctx->height + 2 * EDGE_WIDTH;
}
r = ff_thread_get_buffer(avctx, &pic->tf,
pic->reference ? AV_GET_BUFFER_FLAG_REF : 0);
} else {
pic->f->width = avctx->width;
pic->f->height = avctx->height;
pic->f->format = avctx->pix_fmt;
r = avcodec_default_get_buffer2(avctx, pic->f, 0);
}
if (r < 0 || !pic->f->buf[0]) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed (%d %p)\n",
r, pic->f->data[0]);
return -1;
}
if (edges_needed) {
int i;
for (i = 0; pic->f->data[i]; i++) {
int offset = (EDGE_WIDTH >> (i ? chroma_y_shift : 0)) *
pic->f->linesize[i] +
(EDGE_WIDTH >> (i ? chroma_x_shift : 0));
pic->f->data[i] += offset;
}
pic->f->width = avctx->width;
pic->f->height = avctx->height;
}
if (avctx->hwaccel) {
assert(!pic->hwaccel_picture_private);
if (avctx->hwaccel->frame_priv_data_size) {
pic->hwaccel_priv_buf = av_buffer_allocz(avctx->hwaccel->frame_priv_data_size);
if (!pic->hwaccel_priv_buf) {
av_log(avctx, AV_LOG_ERROR, "alloc_frame_buffer() failed (hwaccel private data allocation)\n");
return -1;
}
pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
}
}
if (linesize && (linesize != pic->f->linesize[0] ||
uvlinesize != pic->f->linesize[1])) {
av_log(avctx, AV_LOG_ERROR,
"get_buffer() failed (stride changed)\n");
ff_mpeg_unref_picture(avctx, pic);
return -1;
}
if (pic->f->linesize[1] != pic->f->linesize[2]) {
av_log(avctx, AV_LOG_ERROR,
"get_buffer() failed (uv stride mismatch)\n");
ff_mpeg_unref_picture(avctx, pic);
return -1;
}
if (!sc->edge_emu_buffer &&
(ret = ff_mpeg_framesize_alloc(avctx, me, sc,
pic->f->linesize[0])) < 0) {
av_log(avctx, AV_LOG_ERROR,
"get_buffer() failed to allocate context scratch buffers.\n");
ff_mpeg_unref_picture(avctx, pic);
return ret;
}
return 0;
}
static int alloc_picture_tables(AVCodecContext *avctx, Picture *pic, int encoding, int out_format,
int mb_stride, int mb_width, int mb_height, int b8_stride)
{
const int big_mb_num = mb_stride * (mb_height + 1) + 1;
const int mb_array_size = mb_stride * mb_height;
const int b8_array_size = b8_stride * mb_height * 2;
int i;
pic->mbskip_table_buf = av_buffer_allocz(mb_array_size + 2);
pic->qscale_table_buf = av_buffer_allocz(big_mb_num + mb_stride);
pic->mb_type_buf = av_buffer_allocz((big_mb_num + mb_stride) *
sizeof(uint32_t));
if (!pic->mbskip_table_buf || !pic->qscale_table_buf || !pic->mb_type_buf)
return AVERROR(ENOMEM);
if (encoding) {
pic->mb_var_buf = av_buffer_allocz(mb_array_size * sizeof(int16_t));
pic->mc_mb_var_buf = av_buffer_allocz(mb_array_size * sizeof(int16_t));
pic->mb_mean_buf = av_buffer_allocz(mb_array_size);
if (!pic->mb_var_buf || !pic->mc_mb_var_buf || !pic->mb_mean_buf)
return AVERROR(ENOMEM);
}
if (out_format == FMT_H263 || encoding || avctx->debug_mv ||
(avctx->flags2 & CODEC_FLAG2_EXPORT_MVS)) {
int mv_size = 2 * (b8_array_size + 4) * sizeof(int16_t);
int ref_index_size = 4 * mb_array_size;
for (i = 0; mv_size && i < 2; i++) {
pic->motion_val_buf[i] = av_buffer_allocz(mv_size);
pic->ref_index_buf[i] = av_buffer_allocz(ref_index_size);
if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i])
return AVERROR(ENOMEM);
}
}
pic->alloc_mb_width = mb_width;
pic->alloc_mb_height = mb_height;
return 0;
}
/**
* Allocate a Picture.
* The pixels are allocated/set by calling get_buffer() if shared = 0
*/
int ff_alloc_picture(AVCodecContext *avctx, Picture *pic, MotionEstContext *me,
ScratchpadContext *sc, int shared, int encoding,
int chroma_x_shift, int chroma_y_shift, int out_format,
int mb_stride, int mb_width, int mb_height, int b8_stride,
ptrdiff_t *linesize, ptrdiff_t *uvlinesize)
{
int i, ret;
if (pic->qscale_table_buf)
if ( pic->alloc_mb_width != mb_width
|| pic->alloc_mb_height != mb_height)
ff_free_picture_tables(pic);
if (shared) {
av_assert0(pic->f->data[0]);
pic->shared = 1;
} else {
av_assert0(!pic->f->buf[0]);
if (alloc_frame_buffer(avctx, pic, me, sc,
chroma_x_shift, chroma_y_shift,
*linesize, *uvlinesize) < 0)
return -1;
*linesize = pic->f->linesize[0];
*uvlinesize = pic->f->linesize[1];
}
if (!pic->qscale_table_buf)
ret = alloc_picture_tables(avctx, pic, encoding, out_format,
mb_stride, mb_width, mb_height, b8_stride);
else
ret = make_tables_writable(pic);
if (ret < 0)
goto fail;
if (encoding) {
pic->mb_var = (uint16_t*)pic->mb_var_buf->data;
pic->mc_mb_var = (uint16_t*)pic->mc_mb_var_buf->data;
pic->mb_mean = pic->mb_mean_buf->data;
}
pic->mbskip_table = pic->mbskip_table_buf->data;
pic->qscale_table = pic->qscale_table_buf->data + 2 * mb_stride + 1;
pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * mb_stride + 1;
if (pic->motion_val_buf[0]) {
for (i = 0; i < 2; i++) {
pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
pic->ref_index[i] = pic->ref_index_buf[i]->data;
}
}
return 0;
fail:
av_log(avctx, AV_LOG_ERROR, "Error allocating a picture.\n");
ff_mpeg_unref_picture(avctx, pic);
ff_free_picture_tables(pic);
return AVERROR(ENOMEM);
}
/**
* Deallocate a picture.
*/
void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *pic)
{
int off = offsetof(Picture, mb_mean) + sizeof(pic->mb_mean);
pic->tf.f = pic->f;
/* WM Image / Screen codecs allocate internal buffers with different
* dimensions / colorspaces; ignore user-defined callbacks for these. */
if (avctx->codec_id != AV_CODEC_ID_WMV3IMAGE &&
avctx->codec_id != AV_CODEC_ID_VC1IMAGE &&
avctx->codec_id != AV_CODEC_ID_MSS2)
ff_thread_release_buffer(avctx, &pic->tf);
else if (pic->f)
av_frame_unref(pic->f);
av_buffer_unref(&pic->hwaccel_priv_buf);
if (pic->needs_realloc)
ff_free_picture_tables(pic);
memset((uint8_t*)pic + off, 0, sizeof(*pic) - off);
}
int ff_update_picture_tables(Picture *dst, Picture *src)
{
int i;
#define UPDATE_TABLE(table) \
do { \
if (src->table && \
(!dst->table || dst->table->buffer != src->table->buffer)) { \
av_buffer_unref(&dst->table); \
dst->table = av_buffer_ref(src->table); \
if (!dst->table) { \
ff_free_picture_tables(dst); \
return AVERROR(ENOMEM); \
} \
} \
} while (0)
UPDATE_TABLE(mb_var_buf);
UPDATE_TABLE(mc_mb_var_buf);
UPDATE_TABLE(mb_mean_buf);
UPDATE_TABLE(mbskip_table_buf);
UPDATE_TABLE(qscale_table_buf);
UPDATE_TABLE(mb_type_buf);
for (i = 0; i < 2; i++) {
UPDATE_TABLE(motion_val_buf[i]);
UPDATE_TABLE(ref_index_buf[i]);
}
dst->mb_var = src->mb_var;
dst->mc_mb_var = src->mc_mb_var;
dst->mb_mean = src->mb_mean;
dst->mbskip_table = src->mbskip_table;
dst->qscale_table = src->qscale_table;
dst->mb_type = src->mb_type;
for (i = 0; i < 2; i++) {
dst->motion_val[i] = src->motion_val[i];
dst->ref_index[i] = src->ref_index[i];
}
dst->alloc_mb_width = src->alloc_mb_width;
dst->alloc_mb_height = src->alloc_mb_height;
return 0;
}
int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src)
{
int ret;
av_assert0(!dst->f->buf[0]);
av_assert0(src->f->buf[0]);
src->tf.f = src->f;
dst->tf.f = dst->f;
ret = ff_thread_ref_frame(&dst->tf, &src->tf);
if (ret < 0)
goto fail;
ret = ff_update_picture_tables(dst, src);
if (ret < 0)
goto fail;
if (src->hwaccel_picture_private) {
dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
if (!dst->hwaccel_priv_buf)
goto fail;
dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
}
dst->field_picture = src->field_picture;
dst->mb_var_sum = src->mb_var_sum;
dst->mc_mb_var_sum = src->mc_mb_var_sum;
dst->b_frame_score = src->b_frame_score;
dst->needs_realloc = src->needs_realloc;
dst->reference = src->reference;
dst->shared = src->shared;
return 0;
fail:
ff_mpeg_unref_picture(avctx, dst);
return ret;
}
static inline int pic_is_unused(Picture *pic)
{
if (!pic->f->buf[0])
return 1;
if (pic->needs_realloc && !(pic->reference & DELAYED_PIC_REF))
return 1;
return 0;
}
static int find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared)
{
int i;
if (shared) {
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
if (!picture[i].f->buf[0])
return i;
}
} else {
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
if (pic_is_unused(&picture[i]))
return i;
}
}
av_log(avctx, AV_LOG_FATAL,
"Internal error, picture buffer overflow\n");
/* We could return -1, but the codec would crash trying to draw into a
* non-existing frame anyway. This is safer than waiting for a random crash.
* Also the return of this is never useful, an encoder must only allocate
* as much as allowed in the specification. This has no relationship to how
* much libavcodec could allocate (and MAX_PICTURE_COUNT is always large
* enough for such valid streams).
* Plus, a decoder has to check stream validity and remove frames if too
* many reference frames are around. Waiting for "OOM" is not correct at
* all. Similarly, missing reference frames have to be replaced by
* interpolated/MC frames, anything else is a bug in the codec ...
*/
abort();
return -1;
}
int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared)
{
int ret = find_unused_picture(avctx, picture, shared);
if (ret >= 0 && ret < MAX_PICTURE_COUNT) {
if (picture[ret].needs_realloc) {
picture[ret].needs_realloc = 0;
ff_free_picture_tables(&picture[ret]);
ff_mpeg_unref_picture(avctx, &picture[ret]);
}
}
return ret;
}
void ff_free_picture_tables(Picture *pic)
{
int i;
pic->alloc_mb_width =
pic->alloc_mb_height = 0;
av_buffer_unref(&pic->mb_var_buf);
av_buffer_unref(&pic->mc_mb_var_buf);
av_buffer_unref(&pic->mb_mean_buf);
av_buffer_unref(&pic->mbskip_table_buf);
av_buffer_unref(&pic->qscale_table_buf);
av_buffer_unref(&pic->mb_type_buf);
for (i = 0; i < 2; i++) {
av_buffer_unref(&pic->motion_val_buf[i]);
av_buffer_unref(&pic->ref_index_buf[i]);
}
}

114
libavcodec/mpegpicture.h Normal file
View File

@ -0,0 +1,114 @@
/*
* Mpeg video formats-related defines and utility functions
*
* 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
*/
#ifndef AVCODEC_MPEGPICTURE_H
#define AVCODEC_MPEGPICTURE_H
#include <stdint.h>
#include "libavutil/frame.h"
#include "avcodec.h"
#include "motion_est.h"
#include "thread.h"
#define MAX_PICTURE_COUNT 36
#define EDGE_WIDTH 16
typedef struct ScratchpadContext {
uint8_t *edge_emu_buffer; ///< temporary buffer for if MVs point to out-of-frame data
uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
uint8_t *obmc_scratchpad;
uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
} ScratchpadContext;
/**
* Picture.
*/
typedef struct Picture {
struct AVFrame *f;
ThreadFrame tf;
AVBufferRef *qscale_table_buf;
int8_t *qscale_table;
AVBufferRef *motion_val_buf[2];
int16_t (*motion_val[2])[2];
AVBufferRef *mb_type_buf;
uint32_t *mb_type; ///< types and macros are defined in mpegutils.h
AVBufferRef *mbskip_table_buf;
uint8_t *mbskip_table;
AVBufferRef *ref_index_buf[2];
int8_t *ref_index[2];
AVBufferRef *mb_var_buf;
uint16_t *mb_var; ///< Table for MB variances
AVBufferRef *mc_mb_var_buf;
uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
int alloc_mb_width; ///< mb_width used to allocate tables
int alloc_mb_height; ///< mb_height used to allocate tables
AVBufferRef *mb_mean_buf;
uint8_t *mb_mean; ///< Table for MB luminance
AVBufferRef *hwaccel_priv_buf;
void *hwaccel_picture_private; ///< Hardware accelerator private data
int field_picture; ///< whether or not the picture was encoded in separate fields
int64_t mb_var_sum; ///< sum of MB variance for current frame
int64_t mc_mb_var_sum; ///< motion compensated MB variance for current frame
int b_frame_score;
int needs_realloc; ///< Picture needs to be reallocated (eg due to a frame size change)
int reference;
int shared;
uint64_t error[AV_NUM_DATA_POINTERS];
} Picture;
/**
* Allocate a Picture.
* The pixels are allocated/set by calling get_buffer() if shared = 0.
*/
int ff_alloc_picture(AVCodecContext *avctx, Picture *pic, MotionEstContext *me,
ScratchpadContext *sc, int shared, int encoding,
int chroma_x_shift, int chroma_y_shift, int out_format,
int mb_stride, int mb_width, int mb_height, int b8_stride,
ptrdiff_t *linesize, ptrdiff_t *uvlinesize);
int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
ScratchpadContext *sc, int linesize);
int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src);
void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *picture);
void ff_free_picture_tables(Picture *pic);
int ff_update_picture_tables(Picture *dst, Picture *src);
int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared);
#endif /* AVCODEC_MPEGPICTURE_H */

439
libavcodec/mpegvideo.c
View File

@ -361,215 +361,6 @@ av_cold void ff_mpv_idct_init(MpegEncContext *s)
ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan);
}
int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
ScratchpadContext *sc, int linesize)
{
int alloc_size = FFALIGN(FFABS(linesize) + 64, 32);
if (avctx->hwaccel || avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
return 0;
if (linesize < 24) {
av_log(avctx, AV_LOG_ERROR, "Image too small, temporary buffers cannot function\n");
return AVERROR_PATCHWELCOME;
}
// edge emu needs blocksize + filter length - 1
// (= 17x17 for halfpel / 21x21 for h264)
// VC1 computes luma and chroma simultaneously and needs 19X19 + 9x9
// at uvlinesize. It supports only YUV420 so 24x24 is enough
// linesize * interlaced * MBsize
// we also use this buffer for encoding in encode_mb_internal() needig an additional 32 lines
FF_ALLOCZ_ARRAY_OR_GOTO(avctx, sc->edge_emu_buffer, alloc_size, 4 * 68,
fail);
FF_ALLOCZ_ARRAY_OR_GOTO(avctx, me->scratchpad, alloc_size, 4 * 16 * 2,
fail)
me->temp = me->scratchpad;
sc->rd_scratchpad = me->scratchpad;
sc->b_scratchpad = me->scratchpad;
sc->obmc_scratchpad = me->scratchpad + 16;
return 0;
fail:
av_freep(&sc->edge_emu_buffer);
return AVERROR(ENOMEM);
}
/**
* Allocate a frame buffer
*/
static int alloc_frame_buffer(AVCodecContext *avctx, Picture *pic,
MotionEstContext *me, ScratchpadContext *sc,
int chroma_x_shift, int chroma_y_shift,
int linesize, int uvlinesize)
{
int edges_needed = av_codec_is_encoder(avctx->codec);
int r, ret;
pic->tf.f = pic->f;
if (avctx->codec_id != AV_CODEC_ID_WMV3IMAGE &&
avctx->codec_id != AV_CODEC_ID_VC1IMAGE &&
avctx->codec_id != AV_CODEC_ID_MSS2) {
if (edges_needed) {
pic->f->width = avctx->width + 2 * EDGE_WIDTH;
pic->f->height = avctx->height + 2 * EDGE_WIDTH;
}
r = ff_thread_get_buffer(avctx, &pic->tf,
pic->reference ? AV_GET_BUFFER_FLAG_REF : 0);
} else {
pic->f->width = avctx->width;
pic->f->height = avctx->height;
pic->f->format = avctx->pix_fmt;
r = avcodec_default_get_buffer2(avctx, pic->f, 0);
}
if (r < 0 || !pic->f->buf[0]) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed (%d %p)\n",
r, pic->f->data[0]);
return -1;
}
if (edges_needed) {
int i;
for (i = 0; pic->f->data[i]; i++) {
int offset = (EDGE_WIDTH >> (i ? chroma_y_shift : 0)) *
pic->f->linesize[i] +
(EDGE_WIDTH >> (i ? chroma_x_shift : 0));
pic->f->data[i] += offset;
}
pic->f->width = avctx->width;
pic->f->height = avctx->height;
}
if (avctx->hwaccel) {
assert(!pic->hwaccel_picture_private);
if (avctx->hwaccel->frame_priv_data_size) {
pic->hwaccel_priv_buf = av_buffer_allocz(avctx->hwaccel->frame_priv_data_size);
if (!pic->hwaccel_priv_buf) {
av_log(avctx, AV_LOG_ERROR, "alloc_frame_buffer() failed (hwaccel private data allocation)\n");
return -1;
}
pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
}
}
if (linesize && (linesize != pic->f->linesize[0] ||
uvlinesize != pic->f->linesize[1])) {
av_log(avctx, AV_LOG_ERROR,
"get_buffer() failed (stride changed)\n");
ff_mpeg_unref_picture(avctx, pic);
return -1;
}
if (pic->f->linesize[1] != pic->f->linesize[2]) {
av_log(avctx, AV_LOG_ERROR,
"get_buffer() failed (uv stride mismatch)\n");
ff_mpeg_unref_picture(avctx, pic);
return -1;
}
if (!sc->edge_emu_buffer &&
(ret = ff_mpeg_framesize_alloc(avctx, me, sc,
pic->f->linesize[0])) < 0) {
av_log(avctx, AV_LOG_ERROR,
"get_buffer() failed to allocate context scratch buffers.\n");
ff_mpeg_unref_picture(avctx, pic);
return ret;
}
return 0;
}
void ff_free_picture_tables(Picture *pic)
{
int i;
pic->alloc_mb_width =
pic->alloc_mb_height = 0;
av_buffer_unref(&pic->mb_var_buf);
av_buffer_unref(&pic->mc_mb_var_buf);
av_buffer_unref(&pic->mb_mean_buf);
av_buffer_unref(&pic->mbskip_table_buf);
av_buffer_unref(&pic->qscale_table_buf);
av_buffer_unref(&pic->mb_type_buf);
for (i = 0; i < 2; i++) {
av_buffer_unref(&pic->motion_val_buf[i]);
av_buffer_unref(&pic->ref_index_buf[i]);
}
}
static int alloc_picture_tables(AVCodecContext *avctx, Picture *pic, int encoding, int out_format,
int mb_stride, int mb_width, int mb_height, int b8_stride)
{
const int big_mb_num = mb_stride * (mb_height + 1) + 1;
const int mb_array_size = mb_stride * mb_height;
const int b8_array_size = b8_stride * mb_height * 2;
int i;
pic->mbskip_table_buf = av_buffer_allocz(mb_array_size + 2);
pic->qscale_table_buf = av_buffer_allocz(big_mb_num + mb_stride);
pic->mb_type_buf = av_buffer_allocz((big_mb_num + mb_stride) *
sizeof(uint32_t));
if (!pic->mbskip_table_buf || !pic->qscale_table_buf || !pic->mb_type_buf)
return AVERROR(ENOMEM);
if (encoding) {
pic->mb_var_buf = av_buffer_allocz(mb_array_size * sizeof(int16_t));
pic->mc_mb_var_buf = av_buffer_allocz(mb_array_size * sizeof(int16_t));
pic->mb_mean_buf = av_buffer_allocz(mb_array_size);
if (!pic->mb_var_buf || !pic->mc_mb_var_buf || !pic->mb_mean_buf)
return AVERROR(ENOMEM);
}
if (out_format == FMT_H263 || encoding || avctx->debug_mv ||
(avctx->flags2 & CODEC_FLAG2_EXPORT_MVS)) {
int mv_size = 2 * (b8_array_size + 4) * sizeof(int16_t);
int ref_index_size = 4 * mb_array_size;
for (i = 0; mv_size && i < 2; i++) {
pic->motion_val_buf[i] = av_buffer_allocz(mv_size);
pic->ref_index_buf[i] = av_buffer_allocz(ref_index_size);
if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i])
return AVERROR(ENOMEM);
}
}
pic->alloc_mb_width = mb_width;
pic->alloc_mb_height = mb_height;
return 0;
}
static int make_tables_writable(Picture *pic)
{
int ret, i;
#define MAKE_WRITABLE(table) \
do {\
if (pic->table &&\
(ret = av_buffer_make_writable(&pic->table)) < 0)\
return ret;\
} while (0)
MAKE_WRITABLE(mb_var_buf);
MAKE_WRITABLE(mc_mb_var_buf);
MAKE_WRITABLE(mb_mean_buf);
MAKE_WRITABLE(mbskip_table_buf);
MAKE_WRITABLE(qscale_table_buf);
MAKE_WRITABLE(mb_type_buf);
for (i = 0; i < 2; i++) {
MAKE_WRITABLE(motion_val_buf[i]);
MAKE_WRITABLE(ref_index_buf[i]);
}
return 0;
}
static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
{
return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, shared, 0,
@ -578,178 +369,6 @@ static int alloc_picture(MpegEncContext *s, Picture *pic, int shared)
&s->linesize, &s->uvlinesize);
}
/**
* Allocate a Picture.
* The pixels are allocated/set by calling get_buffer() if shared = 0
*/
int ff_alloc_picture(AVCodecContext *avctx, Picture *pic, MotionEstContext *me,
ScratchpadContext *sc, int shared, int encoding,
int chroma_x_shift, int chroma_y_shift, int out_format,
int mb_stride, int mb_width, int mb_height, int b8_stride,
ptrdiff_t *linesize, ptrdiff_t *uvlinesize)
{
int i, ret;
if (pic->qscale_table_buf)
if ( pic->alloc_mb_width != mb_width
|| pic->alloc_mb_height != mb_height)
ff_free_picture_tables(pic);
if (shared) {
av_assert0(pic->f->data[0]);
pic->shared = 1;
} else {
av_assert0(!pic->f->buf[0]);
if (alloc_frame_buffer(avctx, pic, me, sc,
chroma_x_shift, chroma_y_shift,
*linesize, *uvlinesize) < 0)
return -1;
*linesize = pic->f->linesize[0];
*uvlinesize = pic->f->linesize[1];
}
if (!pic->qscale_table_buf)
ret = alloc_picture_tables(avctx, pic, encoding, out_format,
mb_stride, mb_width, mb_height, b8_stride);
else
ret = make_tables_writable(pic);
if (ret < 0)
goto fail;
if (encoding) {
pic->mb_var = (uint16_t*)pic->mb_var_buf->data;
pic->mc_mb_var = (uint16_t*)pic->mc_mb_var_buf->data;
pic->mb_mean = pic->mb_mean_buf->data;
}
pic->mbskip_table = pic->mbskip_table_buf->data;
pic->qscale_table = pic->qscale_table_buf->data + 2 * mb_stride + 1;
pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * mb_stride + 1;
if (pic->motion_val_buf[0]) {
for (i = 0; i < 2; i++) {
pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
pic->ref_index[i] = pic->ref_index_buf[i]->data;
}
}
return 0;
fail:
av_log(avctx, AV_LOG_ERROR, "Error allocating a picture.\n");
ff_mpeg_unref_picture(avctx, pic);
ff_free_picture_tables(pic);
return AVERROR(ENOMEM);
}
/**
* Deallocate a picture.
*/
void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *pic)
{
int off = offsetof(Picture, mb_mean) + sizeof(pic->mb_mean);
pic->tf.f = pic->f;
/* WM Image / Screen codecs allocate internal buffers with different
* dimensions / colorspaces; ignore user-defined callbacks for these. */
if (avctx->codec->id != AV_CODEC_ID_WMV3IMAGE &&
avctx->codec->id != AV_CODEC_ID_VC1IMAGE &&
avctx->codec->id != AV_CODEC_ID_MSS2)
ff_thread_release_buffer(avctx, &pic->tf);
else if (pic->f)
av_frame_unref(pic->f);
av_buffer_unref(&pic->hwaccel_priv_buf);
if (pic->needs_realloc)
ff_free_picture_tables(pic);
memset((uint8_t*)pic + off, 0, sizeof(*pic) - off);
}
static int update_picture_tables(Picture *dst, Picture *src)
{
int i;
#define UPDATE_TABLE(table)\
do {\
if (src->table &&\
(!dst->table || dst->table->buffer != src->table->buffer)) {\
av_buffer_unref(&dst->table);\
dst->table = av_buffer_ref(src->table);\
if (!dst->table) {\
ff_free_picture_tables(dst);\
return AVERROR(ENOMEM);\
}\
}\
} while (0)
UPDATE_TABLE(mb_var_buf);
UPDATE_TABLE(mc_mb_var_buf);
UPDATE_TABLE(mb_mean_buf);
UPDATE_TABLE(mbskip_table_buf);
UPDATE_TABLE(qscale_table_buf);
UPDATE_TABLE(mb_type_buf);
for (i = 0; i < 2; i++) {
UPDATE_TABLE(motion_val_buf[i]);
UPDATE_TABLE(ref_index_buf[i]);
}
dst->mb_var = src->mb_var;
dst->mc_mb_var = src->mc_mb_var;
dst->mb_mean = src->mb_mean;
dst->mbskip_table = src->mbskip_table;
dst->qscale_table = src->qscale_table;
dst->mb_type = src->mb_type;
for (i = 0; i < 2; i++) {
dst->motion_val[i] = src->motion_val[i];
dst->ref_index[i] = src->ref_index[i];
}
dst->alloc_mb_width = src->alloc_mb_width;
dst->alloc_mb_height = src->alloc_mb_height;
return 0;
}
int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src)
{
int ret;
av_assert0(!dst->f->buf[0]);
av_assert0(src->f->buf[0]);
src->tf.f = src->f;
dst->tf.f = dst->f;
ret = ff_thread_ref_frame(&dst->tf, &src->tf);
if (ret < 0)
goto fail;
ret = update_picture_tables(dst, src);
if (ret < 0)
goto fail;
if (src->hwaccel_picture_private) {
dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
if (!dst->hwaccel_priv_buf)
goto fail;
dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
}
dst->field_picture = src->field_picture;
dst->mb_var_sum = src->mb_var_sum;
dst->mc_mb_var_sum = src->mc_mb_var_sum;
dst->b_frame_score = src->b_frame_score;
dst->needs_realloc = src->needs_realloc;
dst->reference = src->reference;
dst->shared = src->shared;
return 0;
fail:
ff_mpeg_unref_picture(avctx, dst);
return ret;
}
static int init_duplicate_context(MpegEncContext *s)
{
int y_size = s->b8_stride * (2 * s->mb_height + 1);
@ -941,7 +560,7 @@ do {\
if (s1->pic.f && s1->pic.f->buf[0])\
ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\
else\
ret = update_picture_tables(&s->pic, &s1->pic);\
ret = ff_update_picture_tables(&s->pic, &s1->pic);\
if (ret < 0)\
return ret;\
} while (0)
@ -1532,62 +1151,6 @@ static void release_unused_pictures(AVCodecContext *avctx, Picture *picture)
}
}
static inline int pic_is_unused(Picture *pic)
{
if (!pic->f->buf[0])
return 1;
if (pic->needs_realloc && !(pic->reference & DELAYED_PIC_REF))
return 1;
return 0;
}
static int find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared)
{
int i;
if (shared) {
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
if (!picture[i].f->buf[0])
return i;
}
} else {
for (i = 0; i < MAX_PICTURE_COUNT; i++) {
if (pic_is_unused(&picture[i]))
return i;
}
}
av_log(avctx, AV_LOG_FATAL,
"Internal error, picture buffer overflow\n");
/* We could return -1, but the codec would crash trying to draw into a
* non-existing frame anyway. This is safer than waiting for a random crash.
* Also the return of this is never useful, an encoder must only allocate
* as much as allowed in the specification. This has no relationship to how
* much libavcodec could allocate (and MAX_PICTURE_COUNT is always large
* enough for such valid streams).
* Plus, a decoder has to check stream validity and remove frames if too
* many reference frames are around. Waiting for "OOM" is not correct at
* all. Similarly, missing reference frames have to be replaced by
* interpolated/MC frames, anything else is a bug in the codec ...
*/
abort();
return -1;
}
int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared)
{
int ret = find_unused_picture(avctx, picture, shared);
if (ret >= 0 && ret < MAX_PICTURE_COUNT) {
if (picture[ret].needs_realloc) {
picture[ret].needs_realloc = 0;
ff_free_picture_tables(&picture[ret]);
ff_mpeg_unref_picture(avctx, &picture[ret]);
}
}
return ret;
}
static void gray_frame(AVFrame *frame)
{
int i, h_chroma_shift, v_chroma_shift;

83
libavcodec/mpegvideo.h
View File

@ -41,6 +41,7 @@
#include "idctdsp.h"
#include "me_cmp.h"
#include "motion_est.h"
#include "mpegpicture.h"
#include "mpegvideodsp.h"
#include "mpegvideoencdsp.h"
#include "pixblockdsp.h"
@ -61,7 +62,6 @@
#define MAX_FCODE 7
#define MAX_THREADS 32
#define MAX_PICTURE_COUNT 36
#define MAX_B_FRAMES 16
@ -71,8 +71,6 @@
#define INPLACE_OFFSET 16
#define EDGE_WIDTH 16
/* Start codes. */
#define SEQ_END_CODE 0x000001b7
#define SEQ_START_CODE 0x000001b3
@ -83,67 +81,6 @@
#define EXT_START_CODE 0x000001b5
#define USER_START_CODE 0x000001b2
/**
* Picture.
*/
typedef struct Picture{
struct AVFrame *f;
ThreadFrame tf;
AVBufferRef *qscale_table_buf;
int8_t *qscale_table;
AVBufferRef *motion_val_buf[2];
int16_t (*motion_val[2])[2];
AVBufferRef *mb_type_buf;
uint32_t *mb_type; ///< types and macros are defined in mpegutils.h
AVBufferRef *mbskip_table_buf;
uint8_t *mbskip_table;
AVBufferRef *ref_index_buf[2];
int8_t *ref_index[2];
AVBufferRef *mb_var_buf;
uint16_t *mb_var; ///< Table for MB variances
AVBufferRef *mc_mb_var_buf;
uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
int alloc_mb_width; ///< mb_width used to allocate tables
int alloc_mb_height; ///< mb_height used to allocate tables
AVBufferRef *mb_mean_buf;
uint8_t *mb_mean; ///< Table for MB luminance
AVBufferRef *hwaccel_priv_buf;
/**
* hardware accelerator private data
*/
void *hwaccel_picture_private;
int field_picture; ///< whether or not the picture was encoded in separate fields
int64_t mb_var_sum; ///< sum of MB variance for current frame
int64_t mc_mb_var_sum; ///< motion compensated MB variance for current frame
int b_frame_score;
int needs_realloc; ///< Picture needs to be reallocated (eg due to a frame size change)
int reference;
int shared;
uint64_t error[AV_NUM_DATA_POINTERS];
} Picture;
typedef struct ScratchpadContext {
uint8_t *edge_emu_buffer; ///< temporary buffer for if MVs point to out-of-frame data
uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
uint8_t *obmc_scratchpad;
uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
} ScratchpadContext;
/**
* MpegEncContext.
*/
@ -718,7 +655,6 @@ int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_typ
void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared);
int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
void ff_set_qscale(MpegEncContext * s, int qscale);
@ -738,18 +674,6 @@ void ff_mpv_motion(MpegEncContext *s,
op_pixels_func (*pix_op)[4],
qpel_mc_func (*qpix_op)[16]);
/**
* Allocate a Picture.
* The pixels are allocated/set by calling get_buffer() if shared = 0.
*/
int ff_alloc_picture(AVCodecContext *avctx, Picture *pic, MotionEstContext *me,
ScratchpadContext *sc, int shared, int encoding,
int chroma_x_shift, int chroma_y_shift, int out_format,
int mb_stride, int mb_width, int mb_height, int b8_stride,
ptrdiff_t *linesize, ptrdiff_t *uvlinesize);
int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me,
ScratchpadContext *sc, int linesize);
/**
* permute block according to permuatation.
* @param last last non zero element in scantable order
@ -784,9 +708,4 @@ int ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number);
int ff_rv_decode_dc(MpegEncContext *s, int n);
void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number);
int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src);
void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *picture);
void ff_free_picture_tables(Picture *pic);
#endif /* AVCODEC_MPEGVIDEO_H */