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d15f2e00c5
When a frame is allocated using libschroedinger routines, the frame data size does not match the actual frame size if the width is not a multiple of 16. So we cannot do a straightforward memcpy of the frame returned by libschroedinger into the FFmpeg picture as the stride differs from the width. Fix this bug by allocating for the libschroedinger frame with the dimensions in AVCodecContext within libavcodec and passing the frame to libschroedinger. patch by Anuradha Suraparaju, anuradha rd.bbc.co uk Originally committed as revision 19653 to svn://svn.ffmpeg.org/ffmpeg/trunk
133 lines
4.4 KiB
C
133 lines
4.4 KiB
C
/*
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* Copyright (c) 2008 BBC, Anuradha Suraparaju <asuraparaju at gmail dot com >
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file libavcodec/libschroedinger.c
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* function definitions common to libschroedingerdec.c and libschroedingerenc.c
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*/
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#include "libdirac_libschro.h"
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#include "libschroedinger.h"
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/**
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* Schroedinger video preset table. Ensure that this tables matches up correctly
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* with the ff_dirac_schro_video_format_info table in libdirac_libschro.c.
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*/
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static const SchroVideoFormatEnum ff_schro_video_formats[]={
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SCHRO_VIDEO_FORMAT_CUSTOM ,
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SCHRO_VIDEO_FORMAT_QSIF ,
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SCHRO_VIDEO_FORMAT_QCIF ,
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SCHRO_VIDEO_FORMAT_SIF ,
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SCHRO_VIDEO_FORMAT_CIF ,
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SCHRO_VIDEO_FORMAT_4SIF ,
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SCHRO_VIDEO_FORMAT_4CIF ,
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SCHRO_VIDEO_FORMAT_SD480I_60 ,
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SCHRO_VIDEO_FORMAT_SD576I_50 ,
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SCHRO_VIDEO_FORMAT_HD720P_60 ,
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SCHRO_VIDEO_FORMAT_HD720P_50 ,
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SCHRO_VIDEO_FORMAT_HD1080I_60 ,
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SCHRO_VIDEO_FORMAT_HD1080I_50 ,
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SCHRO_VIDEO_FORMAT_HD1080P_60 ,
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SCHRO_VIDEO_FORMAT_HD1080P_50 ,
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SCHRO_VIDEO_FORMAT_DC2K_24 ,
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SCHRO_VIDEO_FORMAT_DC4K_24 ,
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};
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SchroVideoFormatEnum ff_get_schro_video_format_preset(AVCodecContext *avccontext)
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{
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unsigned int num_formats = sizeof(ff_schro_video_formats) /
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sizeof(ff_schro_video_formats[0]);
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unsigned int idx = ff_dirac_schro_get_video_format_idx (avccontext);
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return (idx < num_formats) ? ff_schro_video_formats[idx] :
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SCHRO_VIDEO_FORMAT_CUSTOM;
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}
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int ff_get_schro_frame_format (SchroChromaFormat schro_pix_fmt,
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SchroFrameFormat *schro_frame_fmt)
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{
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unsigned int num_formats = sizeof(ffmpeg_schro_pixel_format_map) /
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sizeof(ffmpeg_schro_pixel_format_map[0]);
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int idx;
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for (idx = 0; idx < num_formats; ++idx) {
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if (ffmpeg_schro_pixel_format_map[idx].schro_pix_fmt == schro_pix_fmt) {
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*schro_frame_fmt = ffmpeg_schro_pixel_format_map[idx].schro_frame_fmt;
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return 0;
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}
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}
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return -1;
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}
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static void FreeSchroFrame(SchroFrame *frame, void *priv)
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{
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AVPicture *p_pic = priv;
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if (!p_pic)
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return;
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avpicture_free(p_pic);
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av_freep(&p_pic);
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}
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SchroFrame *ff_create_schro_frame(AVCodecContext *avccontext,
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SchroFrameFormat schro_frame_fmt)
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{
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AVPicture *p_pic;
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SchroFrame *p_frame;
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int y_width, uv_width;
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int y_height, uv_height;
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int i;
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y_width = avccontext->width;
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y_height = avccontext->height;
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uv_width = y_width >> (SCHRO_FRAME_FORMAT_H_SHIFT(schro_frame_fmt));
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uv_height = y_height >> (SCHRO_FRAME_FORMAT_V_SHIFT(schro_frame_fmt));
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p_pic = av_mallocz(sizeof(AVPicture));
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avpicture_alloc(p_pic, avccontext->pix_fmt, y_width, y_height);
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p_frame = schro_frame_new();
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p_frame->format = schro_frame_fmt;
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p_frame->width = y_width;
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p_frame->height = y_height;
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schro_frame_set_free_callback(p_frame, FreeSchroFrame, (void *)p_pic);
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for (i = 0; i < 3; ++i) {
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p_frame->components[i].width = i ? uv_width : y_width;
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p_frame->components[i].stride = p_pic->linesize[i];
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p_frame->components[i].height = i ? uv_height : y_height;
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p_frame->components[i].length =
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p_frame->components[i].stride * p_frame->components[i].height;
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p_frame->components[i].data = p_pic->data[i];
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if (i) {
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p_frame->components[i].v_shift =
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SCHRO_FRAME_FORMAT_V_SHIFT(p_frame->format);
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p_frame->components[i].h_shift =
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SCHRO_FRAME_FORMAT_H_SHIFT(p_frame->format);
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}
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}
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return p_frame;
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}
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