From 52548eeede51e43c811b813d0b9c7144f5939046 Mon Sep 17 00:00:00 2001 From: Diego Biurrun Date: Mon, 5 Feb 2007 15:05:29 +0000 Subject: [PATCH] BMP encoder by Michel Bardiaux, mbardiaux mediaxim be Originally committed as revision 7824 to svn://svn.ffmpeg.org/ffmpeg/trunk --- Changelog | 1 + libavcodec/Makefile | 1 + libavcodec/allcodecs.c | 2 +- libavcodec/avcodec.h | 5 ++- libavcodec/bmpenc.c | 98 ++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 104 insertions(+), 3 deletions(-) create mode 100644 libavcodec/bmpenc.c diff --git a/Changelog b/Changelog index 99ff32ed59..9c655e8e6d 100644 --- a/Changelog +++ b/Changelog @@ -69,6 +69,7 @@ version - Musepack decoder - Flash Screen Video encoder - Theora encoding via libtheora +- BMP encoder version 0.4.9-pre1: diff --git a/libavcodec/Makefile b/libavcodec/Makefile index 0b8c724baf..8b3c96b66e 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -55,6 +55,7 @@ OBJS-$(CONFIG_ASV2_DECODER) += asv1.o OBJS-$(CONFIG_ASV2_ENCODER) += asv1.o OBJS-$(CONFIG_AVS_DECODER) += avs.o OBJS-$(CONFIG_BMP_DECODER) += bmp.o +OBJS-$(CONFIG_BMP_ENCODER) += bmpenc.o OBJS-$(CONFIG_CAVS_DECODER) += cavs.o cavsdsp.o OBJS-$(CONFIG_CINEPAK_DECODER) += cinepak.o OBJS-$(CONFIG_CLJR_DECODER) += cljr.o diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c index 5ae88fcb47..a2c88c8197 100644 --- a/libavcodec/allcodecs.c +++ b/libavcodec/allcodecs.c @@ -54,7 +54,7 @@ void avcodec_register_all(void) REGISTER_ENCDEC (ASV1, asv1); REGISTER_ENCDEC (ASV2, asv2); REGISTER_DECODER(AVS, avs); - REGISTER_DECODER(BMP, bmp); + REGISTER_ENCDEC (BMP, bmp); REGISTER_DECODER(CAVS, cavs); REGISTER_DECODER(CINEPAK, cinepak); REGISTER_DECODER(CLJR, cljr); diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h index 379414b4e8..416d8eaf34 100644 --- a/libavcodec/avcodec.h +++ b/libavcodec/avcodec.h @@ -37,8 +37,8 @@ extern "C" { #define AV_STRINGIFY(s) AV_TOSTRING(s) #define AV_TOSTRING(s) #s -#define LIBAVCODEC_VERSION_INT ((51<<16)+(30<<8)+0) -#define LIBAVCODEC_VERSION 51.30.0 +#define LIBAVCODEC_VERSION_INT ((51<<16)+(31<<8)+0) +#define LIBAVCODEC_VERSION 51.31.0 #define LIBAVCODEC_BUILD LIBAVCODEC_VERSION_INT #define LIBAVCODEC_IDENT "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION) @@ -2148,6 +2148,7 @@ extern AVCodec amr_nb_encoder; extern AVCodec amr_wb_encoder; extern AVCodec asv1_encoder; extern AVCodec asv2_encoder; +extern AVCodec bmp_encoder; extern AVCodec dvvideo_encoder; extern AVCodec faac_encoder; extern AVCodec ffv1_encoder; diff --git a/libavcodec/bmpenc.c b/libavcodec/bmpenc.c new file mode 100644 index 0000000000..3510385042 --- /dev/null +++ b/libavcodec/bmpenc.c @@ -0,0 +1,98 @@ +/* + * BMP image format encoder + * Copyright (c) 2006, 2007 Michel Bardiaux + * + * 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 "avcodec.h" +#include "bytestream.h" +#include "bmp.h" + +static int bmp_encode_init(AVCodecContext *avctx){ + BMPContext *s = avctx->priv_data; + + avcodec_get_frame_defaults((AVFrame*)&s->picture); + avctx->coded_frame = (AVFrame*)&s->picture; + + return 0; +} + +static int bmp_encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){ + BMPContext *s = avctx->priv_data; + AVFrame *pict = data; + AVFrame * const p= (AVFrame*)&s->picture; + int n_bytes_image, n_bytes_per_row, n_bytes, i, n, hsize; + uint8_t *ptr; + unsigned char* buf0 = buf; + *p = *pict; + p->pict_type= FF_I_TYPE; + p->key_frame= 1; + n_bytes_per_row = (avctx->width*3 + 3) & ~3; + n_bytes_image = avctx->height*n_bytes_per_row; + + // STRUCTURE.field refer to the MSVC documentation for BITMAPFILEHEADER + // and related pages. +#define SIZE_BITMAPFILEHEADER 14 +#define SIZE_BITMAPINFOHEADER 40 + hsize = SIZE_BITMAPFILEHEADER + SIZE_BITMAPINFOHEADER; + n_bytes = n_bytes_image + hsize; + if(n_bytes>buf_size) { + av_log(avctx, AV_LOG_ERROR, "buf size too small (need %d, got %d)\n", n_bytes, buf_size); + return -1; + } + bytestream_put_byte(&buf, 'B'); // BITMAPFILEHEADER.bfType + bytestream_put_byte(&buf, 'M'); // do. + bytestream_put_le32(&buf, n_bytes); // BITMAPFILEHEADER.bfSize + bytestream_put_le16(&buf, 0); // BITMAPFILEHEADER.bfReserved1 + bytestream_put_le16(&buf, 0); // BITMAPFILEHEADER.bfReserved2 + bytestream_put_le32(&buf, hsize); // BITMAPFILEHEADER.bfOffBits + bytestream_put_le32(&buf, SIZE_BITMAPINFOHEADER); // BITMAPINFOHEADER.biSize + bytestream_put_le32(&buf, avctx->width); // BITMAPINFOHEADER.biWidth + bytestream_put_le32(&buf, avctx->height); // BITMAPINFOHEADER.biHeight + bytestream_put_le16(&buf, 1); // BITMAPINFOHEADER.biPlanes + bytestream_put_le16(&buf, 24); // BITMAPINFOHEADER.biBitCount + bytestream_put_le32(&buf, BMP_RGB); // BITMAPINFOHEADER.biCompression + bytestream_put_le32(&buf, n_bytes_image); // BITMAPINFOHEADER.biSizeImage + bytestream_put_le32(&buf, 0); // BITMAPINFOHEADER.biXPelsPerMeter + bytestream_put_le32(&buf, 0); // BITMAPINFOHEADER.biYPelsPerMeter + bytestream_put_le32(&buf, 0); // BITMAPINFOHEADER.biClrUsed + bytestream_put_le32(&buf, 0); // BITMAPINFOHEADER.biClrImportant + // BMP files are bottom-to-top so we start from the end... + ptr = p->data[0] + (avctx->height - 1) * p->linesize[0]; + buf = buf0 + hsize; + for(i = 0; i < avctx->height; i++) { + n = 3*avctx->width; + memcpy(buf, ptr, n); + buf += n; + memset(buf, 0, n_bytes_per_row-n); + buf += n_bytes_per_row-n; + ptr -= p->linesize[0]; // ... and go back + } + return n_bytes; +} + +AVCodec bmp_encoder = { + "bmp", + CODEC_TYPE_VIDEO, + CODEC_ID_BMP, + sizeof(BMPContext), + bmp_encode_init, + bmp_encode_frame, + NULL, //encode_end, + .pix_fmts= (enum PixelFormat[]){PIX_FMT_BGR24, -1}, +};