libavcodec: when decoding, copy replaygain side data to decoded frames
[libav.git] / libavcodec / rawdec.c
1 /*
2 * Raw Video Decoder
3 * Copyright (c) 2001 Fabrice Bellard
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * Raw Video Decoder
25 */
26
27 #include "avcodec.h"
28 #include "internal.h"
29 #include "raw.h"
30 #include "libavutil/buffer.h"
31 #include "libavutil/common.h"
32 #include "libavutil/intreadwrite.h"
33 #include "libavutil/imgutils.h"
34
35 typedef struct RawVideoContext {
36 AVBufferRef *palette;
37 int frame_size; /* size of the frame in bytes */
38 int flip;
39 int is_2_4_bpp; // 2 or 4 bpp raw in avi/mov
40 int is_yuv2;
41 } RawVideoContext;
42
43 static const PixelFormatTag pix_fmt_bps_avi[] = {
44 { AV_PIX_FMT_PAL8, 4 },
45 { AV_PIX_FMT_PAL8, 8 },
46 { AV_PIX_FMT_RGB444, 12 },
47 { AV_PIX_FMT_RGB555, 15 },
48 { AV_PIX_FMT_RGB555, 16 },
49 { AV_PIX_FMT_BGR24, 24 },
50 { AV_PIX_FMT_RGB32, 32 },
51 { AV_PIX_FMT_NONE, 0 },
52 };
53
54 static const PixelFormatTag pix_fmt_bps_mov[] = {
55 { AV_PIX_FMT_MONOWHITE, 1 },
56 { AV_PIX_FMT_PAL8, 2 },
57 { AV_PIX_FMT_PAL8, 4 },
58 { AV_PIX_FMT_PAL8, 8 },
59 // FIXME swscale does not support 16 bit in .mov, sample 16bit.mov
60 // http://developer.apple.com/documentation/QuickTime/QTFF/QTFFChap3/qtff3.html
61 { AV_PIX_FMT_RGB555BE, 16 },
62 { AV_PIX_FMT_RGB24, 24 },
63 { AV_PIX_FMT_ARGB, 32 },
64 { AV_PIX_FMT_MONOWHITE,33 },
65 { AV_PIX_FMT_NONE, 0 },
66 };
67
68 static enum AVPixelFormat find_pix_fmt(const PixelFormatTag *tags,
69 unsigned int fourcc)
70 {
71 while (tags->pix_fmt >= 0) {
72 if (tags->fourcc == fourcc)
73 return tags->pix_fmt;
74 tags++;
75 }
76 return AV_PIX_FMT_YUV420P;
77 }
78
79 static av_cold int raw_init_decoder(AVCodecContext *avctx)
80 {
81 RawVideoContext *context = avctx->priv_data;
82 const AVPixFmtDescriptor *desc;
83
84 if (avctx->codec_tag == MKTAG('r', 'a', 'w', ' '))
85 avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_mov,
86 avctx->bits_per_coded_sample);
87 else if (avctx->codec_tag == MKTAG('W', 'R', 'A', 'W'))
88 avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_avi,
89 avctx->bits_per_coded_sample);
90 else if (avctx->codec_tag)
91 avctx->pix_fmt = find_pix_fmt(ff_raw_pix_fmt_tags, avctx->codec_tag);
92 else if (avctx->pix_fmt == AV_PIX_FMT_NONE && avctx->bits_per_coded_sample)
93 avctx->pix_fmt = find_pix_fmt(pix_fmt_bps_avi,
94 avctx->bits_per_coded_sample);
95
96 desc = av_pix_fmt_desc_get(avctx->pix_fmt);
97 if (!desc) {
98 av_log(avctx, AV_LOG_ERROR, "Invalid pixel format.\n");
99 return AVERROR(EINVAL);
100 }
101
102 if (desc->flags & (AV_PIX_FMT_FLAG_PAL | AV_PIX_FMT_FLAG_PSEUDOPAL)) {
103 context->palette = av_buffer_alloc(AVPALETTE_SIZE);
104 if (!context->palette)
105 return AVERROR(ENOMEM);
106 if (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)
107 avpriv_set_systematic_pal2((uint32_t*)context->palette->data, avctx->pix_fmt);
108 else
109 memset(context->palette->data, 0, AVPALETTE_SIZE);
110 }
111
112 context->frame_size = avpicture_get_size(avctx->pix_fmt, avctx->width,
113 avctx->height);
114 if ((avctx->bits_per_coded_sample == 4 || avctx->bits_per_coded_sample == 2) &&
115 avctx->pix_fmt == AV_PIX_FMT_PAL8 &&
116 (!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' ')))
117 context->is_2_4_bpp = 1;
118
119 if ((avctx->extradata_size >= 9 &&
120 !memcmp(avctx->extradata + avctx->extradata_size - 9, "BottomUp", 9)) ||
121 avctx->codec_tag == MKTAG(3, 0, 0, 0) ||
122 avctx->codec_tag == MKTAG('W','R','A','W'))
123 context->flip = 1;
124
125 if (avctx->codec_tag == AV_RL32("yuv2") &&
126 avctx->pix_fmt == AV_PIX_FMT_YUYV422)
127 context->is_yuv2 = 1;
128
129 return 0;
130 }
131
132 static void flip(AVCodecContext *avctx, AVPicture *picture)
133 {
134 picture->data[0] += picture->linesize[0] * (avctx->height - 1);
135 picture->linesize[0] *= -1;
136 }
137
138 static int raw_decode(AVCodecContext *avctx, void *data, int *got_frame,
139 AVPacket *avpkt)
140 {
141 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
142 RawVideoContext *context = avctx->priv_data;
143 const uint8_t *buf = avpkt->data;
144 int buf_size = avpkt->size;
145 int need_copy = !avpkt->buf || context->is_2_4_bpp || context->is_yuv2;
146 int res;
147
148 AVFrame *frame = data;
149 AVPicture *picture = data;
150
151 frame->pict_type = AV_PICTURE_TYPE_I;
152 frame->key_frame = 1;
153
154 res = ff_decode_frame_props(avctx, frame);
155 if (res < 0)
156 return res;
157
158 if (buf_size < context->frame_size - (avctx->pix_fmt == AV_PIX_FMT_PAL8 ?
159 AVPALETTE_SIZE : 0))
160 return -1;
161
162 if (need_copy)
163 frame->buf[0] = av_buffer_alloc(context->frame_size);
164 else
165 frame->buf[0] = av_buffer_ref(avpkt->buf);
166 if (!frame->buf[0])
167 return AVERROR(ENOMEM);
168
169 //2bpp and 4bpp raw in avi and mov (yes this is ugly ...)
170 if (context->is_2_4_bpp) {
171 int i;
172 uint8_t *dst = frame->buf[0]->data;
173 buf_size = context->frame_size - AVPALETTE_SIZE;
174 if (avctx->bits_per_coded_sample == 4) {
175 for (i = 0; 2 * i + 1 < buf_size; i++) {
176 dst[2 * i + 0] = buf[i] >> 4;
177 dst[2 * i + 1] = buf[i] & 15;
178 }
179 } else {
180 for (i = 0; 4 * i + 3 < buf_size; i++) {
181 dst[4 * i + 0] = buf[i] >> 6;
182 dst[4 * i + 1] = buf[i] >> 4 & 3;
183 dst[4 * i + 2] = buf[i] >> 2 & 3;
184 dst[4 * i + 3] = buf[i] & 3;
185 }
186 }
187 buf = dst;
188 } else if (need_copy) {
189 memcpy(frame->buf[0]->data, buf, FFMIN(buf_size, context->frame_size));
190 buf = frame->buf[0]->data;
191 }
192
193 if (avctx->codec_tag == MKTAG('A', 'V', '1', 'x') ||
194 avctx->codec_tag == MKTAG('A', 'V', 'u', 'p'))
195 buf += buf_size - context->frame_size;
196
197 if ((res = avpicture_fill(picture, buf, avctx->pix_fmt,
198 avctx->width, avctx->height)) < 0)
199 return res;
200
201 if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
202 const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE,
203 NULL);
204
205 if (pal) {
206 av_buffer_unref(&context->palette);
207 context->palette = av_buffer_alloc(AVPALETTE_SIZE);
208 if (!context->palette)
209 return AVERROR(ENOMEM);
210 memcpy(context->palette->data, pal, AVPALETTE_SIZE);
211 frame->palette_has_changed = 1;
212 }
213 }
214
215 if ((avctx->pix_fmt == AV_PIX_FMT_PAL8 && buf_size < context->frame_size) ||
216 (desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)) {
217 frame->buf[1] = av_buffer_ref(context->palette);
218 if (!frame->buf[1])
219 return AVERROR(ENOMEM);
220 frame->data[1] = frame->buf[1]->data;
221 }
222 if (avctx->pix_fmt == AV_PIX_FMT_BGR24 &&
223 ((frame->linesize[0] + 3) & ~3) * avctx->height <= buf_size)
224 frame->linesize[0] = (frame->linesize[0] + 3) & ~3;
225
226 if (context->flip)
227 flip(avctx, picture);
228
229 if (avctx->codec_tag == MKTAG('Y', 'V', '1', '2') ||
230 avctx->codec_tag == MKTAG('Y', 'V', '1', '6') ||
231 avctx->codec_tag == MKTAG('Y', 'V', '2', '4') ||
232 avctx->codec_tag == MKTAG('Y', 'V', 'U', '9'))
233 FFSWAP(uint8_t *, picture->data[1], picture->data[2]);
234
235 if (avctx->codec_tag == AV_RL32("yuv2") &&
236 avctx->pix_fmt == AV_PIX_FMT_YUYV422) {
237 int x, y;
238 uint8_t *line = picture->data[0];
239 for (y = 0; y < avctx->height; y++) {
240 for (x = 0; x < avctx->width; x++)
241 line[2 * x + 1] ^= 0x80;
242 line += picture->linesize[0];
243 }
244 }
245
246 *got_frame = 1;
247 return buf_size;
248 }
249
250 static av_cold int raw_close_decoder(AVCodecContext *avctx)
251 {
252 RawVideoContext *context = avctx->priv_data;
253
254 av_buffer_unref(&context->palette);
255 return 0;
256 }
257
258 AVCodec ff_rawvideo_decoder = {
259 .name = "rawvideo",
260 .long_name = NULL_IF_CONFIG_SMALL("raw video"),
261 .type = AVMEDIA_TYPE_VIDEO,
262 .id = AV_CODEC_ID_RAWVIDEO,
263 .priv_data_size = sizeof(RawVideoContext),
264 .init = raw_init_decoder,
265 .close = raw_close_decoder,
266 .decode = raw_decode,
267 };