X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fbmpenc.c;h=915c3968a7732ba563fd3cd4dc8c24ba41b51ff6;hb=fa1749dd34c55fb997c97dfc4da9383c9976ab91;hp=34362b852924712531127e469967032920fd949d;hpb=2ba8301769b770ec96ea8f4c02da78a25c6458fe;p=ffmpeg

diff --git a/libavcodec/bmpenc.c b/libavcodec/bmpenc.c
index 34362b85292..915c3968a77 100644
--- a/libavcodec/bmpenc.c
+++ b/libavcodec/bmpenc.c
@@ -3,79 +3,101 @@
  * Copyright (c) 2006, 2007 Michel Bardiaux
  * Copyright (c) 2009 Daniel Verkamp <daniel at drv.nu>
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/imgutils.h"
 #include "avcodec.h"
 #include "bytestream.h"
 #include "bmp.h"
+#include "internal.h"
 
 static const uint32_t monoblack_pal[] = { 0x000000, 0xFFFFFF };
 static const uint32_t rgb565_masks[]  = { 0xF800, 0x07E0, 0x001F };
+static const uint32_t rgb444_masks[]  = { 0x0F00, 0x00F0, 0x000F };
 
 static av_cold int bmp_encode_init(AVCodecContext *avctx){
-    BMPContext *s = avctx->priv_data;
-
-    avcodec_get_frame_defaults((AVFrame*)&s->picture);
-    avctx->coded_frame = (AVFrame*)&s->picture;
+    switch (avctx->pix_fmt) {
+    case AV_PIX_FMT_BGR24:
+        avctx->bits_per_coded_sample = 24;
+        break;
+    case AV_PIX_FMT_RGB555:
+    case AV_PIX_FMT_RGB565:
+    case AV_PIX_FMT_RGB444:
+        avctx->bits_per_coded_sample = 16;
+        break;
+    case AV_PIX_FMT_RGB8:
+    case AV_PIX_FMT_BGR8:
+    case AV_PIX_FMT_RGB4_BYTE:
+    case AV_PIX_FMT_BGR4_BYTE:
+    case AV_PIX_FMT_GRAY8:
+    case AV_PIX_FMT_PAL8:
+        avctx->bits_per_coded_sample = 8;
+        break;
+    case AV_PIX_FMT_MONOBLACK:
+        avctx->bits_per_coded_sample = 1;
+        break;
+    default:
+        av_log(avctx, AV_LOG_INFO, "unsupported pixel format\n");
+        return -1;
+    }
 
     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;
+static int bmp_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
+                            const AVFrame *pict, int *got_packet)
+{
+    const AVFrame * const p = pict;
+    int n_bytes_image, n_bytes_per_row, n_bytes, i, n, hsize, ret;
     const uint32_t *pal = NULL;
-    int pad_bytes_per_row, bit_count, pal_entries = 0, compression = BMP_RGB;
-    uint8_t *ptr;
-    unsigned char* buf0 = buf;
-    *p = *pict;
-    p->pict_type= FF_I_TYPE;
-    p->key_frame= 1;
+    int pad_bytes_per_row, pal_entries = 0, compression = BMP_RGB;
+    int bit_count = avctx->bits_per_coded_sample;
+    uint8_t *ptr, *buf;
+
+#if FF_API_CODED_FRAME
+FF_DISABLE_DEPRECATION_WARNINGS
+    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
+    avctx->coded_frame->key_frame = 1;
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
     switch (avctx->pix_fmt) {
-    case PIX_FMT_BGR24:
-        bit_count = 24;
-        break;
-    case PIX_FMT_RGB555:
-        bit_count = 16;
+    case AV_PIX_FMT_RGB444:
+        compression = BMP_BITFIELDS;
+        pal = rgb444_masks; // abuse pal to hold color masks
+        pal_entries = 3;
         break;
-    case PIX_FMT_RGB565:
-        bit_count = 16;
+    case AV_PIX_FMT_RGB565:
         compression = BMP_BITFIELDS;
         pal = rgb565_masks; // abuse pal to hold color masks
         pal_entries = 3;
         break;
-    case PIX_FMT_RGB8:
-    case PIX_FMT_BGR8:
-    case PIX_FMT_RGB4_BYTE:
-    case PIX_FMT_BGR4_BYTE:
-    case PIX_FMT_GRAY8:
-    case PIX_FMT_PAL8:
-        bit_count = 8;
+    case AV_PIX_FMT_RGB8:
+    case AV_PIX_FMT_BGR8:
+    case AV_PIX_FMT_RGB4_BYTE:
+    case AV_PIX_FMT_BGR4_BYTE:
+    case AV_PIX_FMT_GRAY8:
+        avpriv_set_systematic_pal2((uint32_t*)p->data[1], avctx->pix_fmt);
+    case AV_PIX_FMT_PAL8:
         pal = (uint32_t *)p->data[1];
         break;
-    case PIX_FMT_MONOBLACK:
-        bit_count = 1;
+    case AV_PIX_FMT_MONOBLACK:
         pal = monoblack_pal;
         break;
-    default:
-        return -1;
     }
     if (pal && !pal_entries) pal_entries = 1 << bit_count;
     n_bytes_per_row = ((int64_t)avctx->width * (int64_t)bit_count + 7LL) >> 3LL;
@@ -88,10 +110,11 @@ static int bmp_encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_s
 #define SIZE_BITMAPINFOHEADER 40
     hsize = SIZE_BITMAPFILEHEADER + SIZE_BITMAPINFOHEADER + (pal_entries << 2);
     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;
+    if ((ret = ff_alloc_packet(pkt, n_bytes)) < 0) {
+        av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
+        return ret;
     }
+    buf = pkt->data;
     bytestream_put_byte(&buf, 'B');                   // BITMAPFILEHEADER.bfType
     bytestream_put_byte(&buf, 'M');                   // do.
     bytestream_put_le32(&buf, n_bytes);               // BITMAPFILEHEADER.bfSize
@@ -113,7 +136,7 @@ static int bmp_encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_s
         bytestream_put_le32(&buf, pal[i] & 0xFFFFFF);
     // 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;
+    buf = pkt->data + hsize;
     for(i = 0; i < avctx->height; i++) {
         if (bit_count == 16) {
             const uint16_t *src = (const uint16_t *) ptr;
@@ -128,22 +151,24 @@ static int bmp_encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_s
         buf += pad_bytes_per_row;
         ptr -= p->linesize[0]; // ... and go back
     }
-    return n_bytes;
+
+    pkt->flags |= AV_PKT_FLAG_KEY;
+    *got_packet = 1;
+    return 0;
 }
 
-AVCodec bmp_encoder = {
-    "bmp",
-    CODEC_TYPE_VIDEO,
-    CODEC_ID_BMP,
-    sizeof(BMPContext),
-    bmp_encode_init,
-    bmp_encode_frame,
-    NULL, //encode_end,
-    .pix_fmts = (const  enum PixelFormat[]){
-        PIX_FMT_BGR24,
-        PIX_FMT_RGB555, PIX_FMT_RGB565,
-        PIX_FMT_RGB8, PIX_FMT_BGR8, PIX_FMT_RGB4_BYTE, PIX_FMT_BGR4_BYTE, PIX_FMT_GRAY8, PIX_FMT_PAL8,
-        PIX_FMT_MONOBLACK,
-        PIX_FMT_NONE},
-    .long_name = NULL_IF_CONFIG_SMALL("BMP image"),
+AVCodec ff_bmp_encoder = {
+    .name           = "bmp",
+    .long_name      = NULL_IF_CONFIG_SMALL("BMP (Windows and OS/2 bitmap)"),
+    .type           = AVMEDIA_TYPE_VIDEO,
+    .id             = AV_CODEC_ID_BMP,
+    .init           = bmp_encode_init,
+    .encode2        = bmp_encode_frame,
+    .pix_fmts       = (const enum AVPixelFormat[]){
+        AV_PIX_FMT_BGR24,
+        AV_PIX_FMT_RGB555, AV_PIX_FMT_RGB444, AV_PIX_FMT_RGB565,
+        AV_PIX_FMT_RGB8, AV_PIX_FMT_BGR8, AV_PIX_FMT_RGB4_BYTE, AV_PIX_FMT_BGR4_BYTE, AV_PIX_FMT_GRAY8, AV_PIX_FMT_PAL8,
+        AV_PIX_FMT_MONOBLACK,
+        AV_PIX_FMT_NONE
+    },
 };