mirror of https://github.com/FFmpeg/FFmpeg.git
Signed-off-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Diego Biurrun <diego@biurrun.de>pull/3/merge
Paul B Mahol
13 years ago
committed by
Diego Biurrun
parent
aac07a7a4c
commit
15b4b505c2
4 changed files with 477 additions and 428 deletions
@ -0,0 +1,322 @@ |
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/*
|
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* Image format |
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
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* Copyright (c) 2004 Michael Niedermayer |
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* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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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#include "libavutil/avstring.h" |
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#include "libavutil/log.h" |
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#include "libavutil/opt.h" |
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#include "libavutil/pixdesc.h" |
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#include "libavutil/parseutils.h" |
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#include "avformat.h" |
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#include "internal.h" |
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typedef struct { |
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const AVClass *class; /**< Class for private options. */ |
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int img_first; |
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int img_last; |
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int img_number; |
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int img_count; |
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int is_pipe; |
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char path[1024]; |
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char *pixel_format; /**< Set by a private option. */ |
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char *video_size; /**< Set by a private option. */ |
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char *framerate; /**< Set by a private option. */ |
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int loop; |
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} VideoDemuxData; |
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static const int sizes[][2] = { |
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{ 640, 480 }, |
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{ 720, 480 }, |
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{ 720, 576 }, |
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{ 352, 288 }, |
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{ 352, 240 }, |
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{ 160, 128 }, |
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{ 512, 384 }, |
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{ 640, 352 }, |
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{ 640, 240 }, |
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}; |
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static int infer_size(int *width_ptr, int *height_ptr, int size) |
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{ |
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int i; |
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for(i=0;i<FF_ARRAY_ELEMS(sizes);i++) { |
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if ((sizes[i][0] * sizes[i][1]) == size) { |
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*width_ptr = sizes[i][0]; |
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*height_ptr = sizes[i][1]; |
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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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/* return -1 if no image found */ |
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static int find_image_range(int *pfirst_index, int *plast_index, |
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const char *path) |
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{ |
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char buf[1024]; |
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int range, last_index, range1, first_index; |
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/* find the first image */ |
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for(first_index = 0; first_index < 5; first_index++) { |
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if (av_get_frame_filename(buf, sizeof(buf), path, first_index) < 0){ |
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*pfirst_index = |
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*plast_index = 1; |
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if (avio_check(buf, AVIO_FLAG_READ) > 0) |
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return 0; |
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return -1; |
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} |
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if (avio_check(buf, AVIO_FLAG_READ) > 0) |
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break; |
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} |
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if (first_index == 5) |
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goto fail; |
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|
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/* find the last image */ |
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last_index = first_index; |
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for(;;) { |
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range = 0; |
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for(;;) { |
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if (!range) |
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range1 = 1; |
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else |
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range1 = 2 * range; |
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if (av_get_frame_filename(buf, sizeof(buf), path, |
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last_index + range1) < 0) |
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goto fail; |
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if (avio_check(buf, AVIO_FLAG_READ) <= 0) |
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break; |
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range = range1; |
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/* just in case... */ |
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if (range >= (1 << 30)) |
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goto fail; |
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} |
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/* we are sure than image last_index + range exists */ |
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if (!range) |
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break; |
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last_index += range; |
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} |
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*pfirst_index = first_index; |
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*plast_index = last_index; |
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return 0; |
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fail: |
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return -1; |
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} |
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static int read_probe(AVProbeData *p) |
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{ |
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if (p->filename && ff_guess_image2_codec(p->filename)) { |
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if (av_filename_number_test(p->filename)) |
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return AVPROBE_SCORE_MAX; |
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else |
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return AVPROBE_SCORE_MAX/2; |
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} |
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return 0; |
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} |
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static int read_header(AVFormatContext *s1) |
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{ |
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VideoDemuxData *s = s1->priv_data; |
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int first_index, last_index, ret = 0; |
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int width = 0, height = 0; |
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AVStream *st; |
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enum PixelFormat pix_fmt = PIX_FMT_NONE; |
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AVRational framerate; |
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s1->ctx_flags |= AVFMTCTX_NOHEADER; |
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st = avformat_new_stream(s1, NULL); |
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if (!st) { |
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return AVERROR(ENOMEM); |
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} |
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if (s->pixel_format && (pix_fmt = av_get_pix_fmt(s->pixel_format)) == PIX_FMT_NONE) { |
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av_log(s1, AV_LOG_ERROR, "No such pixel format: %s.\n", s->pixel_format); |
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return AVERROR(EINVAL); |
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} |
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if (s->video_size && (ret = av_parse_video_size(&width, &height, s->video_size)) < 0) { |
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av_log(s, AV_LOG_ERROR, "Could not parse video size: %s.\n", s->video_size); |
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return ret; |
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} |
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if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) { |
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av_log(s, AV_LOG_ERROR, "Could not parse framerate: %s.\n", s->framerate); |
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return ret; |
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} |
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av_strlcpy(s->path, s1->filename, sizeof(s->path)); |
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s->img_number = 0; |
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s->img_count = 0; |
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/* find format */ |
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if (s1->iformat->flags & AVFMT_NOFILE) |
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s->is_pipe = 0; |
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else{ |
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s->is_pipe = 1; |
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st->need_parsing = AVSTREAM_PARSE_FULL; |
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} |
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avpriv_set_pts_info(st, 60, framerate.den, framerate.num); |
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if (width && height) { |
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st->codec->width = width; |
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st->codec->height = height; |
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} |
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if (!s->is_pipe) { |
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if (find_image_range(&first_index, &last_index, s->path) < 0) |
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return AVERROR(ENOENT); |
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s->img_first = first_index; |
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s->img_last = last_index; |
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s->img_number = first_index; |
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/* compute duration */ |
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st->start_time = 0; |
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st->duration = last_index - first_index + 1; |
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} |
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if(s1->video_codec_id){ |
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st->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
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st->codec->codec_id = s1->video_codec_id; |
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}else if(s1->audio_codec_id){ |
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st->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
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st->codec->codec_id = s1->audio_codec_id; |
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}else{ |
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st->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
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st->codec->codec_id = ff_guess_image2_codec(s->path); |
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} |
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if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE) |
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st->codec->pix_fmt = pix_fmt; |
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return 0; |
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} |
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static int read_packet(AVFormatContext *s1, AVPacket *pkt) |
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{ |
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VideoDemuxData *s = s1->priv_data; |
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char filename[1024]; |
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int i; |
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int size[3]={0}, ret[3]={0}; |
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AVIOContext *f[3]; |
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AVCodecContext *codec= s1->streams[0]->codec; |
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if (!s->is_pipe) { |
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/* loop over input */ |
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if (s->loop && s->img_number > s->img_last) { |
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s->img_number = s->img_first; |
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} |
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if (s->img_number > s->img_last) |
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return AVERROR_EOF; |
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if (av_get_frame_filename(filename, sizeof(filename), |
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s->path, s->img_number)<0 && s->img_number > 1) |
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return AVERROR(EIO); |
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for(i=0; i<3; i++){ |
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if (avio_open2(&f[i], filename, AVIO_FLAG_READ, |
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&s1->interrupt_callback, NULL) < 0) { |
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if(i==1) |
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break; |
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av_log(s1, AV_LOG_ERROR, "Could not open file : %s\n",filename); |
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return AVERROR(EIO); |
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} |
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size[i]= avio_size(f[i]); |
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if(codec->codec_id != CODEC_ID_RAWVIDEO) |
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break; |
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filename[ strlen(filename) - 1 ]= 'U' + i; |
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} |
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if(codec->codec_id == CODEC_ID_RAWVIDEO && !codec->width) |
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infer_size(&codec->width, &codec->height, size[0]); |
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} else { |
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f[0] = s1->pb; |
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if (f[0]->eof_reached) |
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return AVERROR(EIO); |
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size[0]= 4096; |
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} |
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av_new_packet(pkt, size[0] + size[1] + size[2]); |
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pkt->stream_index = 0; |
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pkt->flags |= AV_PKT_FLAG_KEY; |
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pkt->size= 0; |
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for(i=0; i<3; i++){ |
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if(size[i]){ |
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ret[i]= avio_read(f[i], pkt->data + pkt->size, size[i]); |
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if (!s->is_pipe) |
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avio_close(f[i]); |
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if(ret[i]>0) |
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pkt->size += ret[i]; |
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} |
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} |
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if (ret[0] <= 0 || ret[1]<0 || ret[2]<0) { |
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av_free_packet(pkt); |
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return AVERROR(EIO); /* signal EOF */ |
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} else { |
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s->img_count++; |
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s->img_number++; |
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return 0; |
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} |
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} |
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#define OFFSET(x) offsetof(VideoDemuxData, x) |
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#define DEC AV_OPT_FLAG_DECODING_PARAM |
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static const AVOption options[] = { |
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{ "pixel_format", "", OFFSET(pixel_format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, |
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{ "video_size", "", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC }, |
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{ "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = "25"}, 0, 0, DEC }, |
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{ "loop", "", OFFSET(loop), AV_OPT_TYPE_INT, {.dbl = 0}, 0, 1, DEC }, |
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{ NULL }, |
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}; |
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#if CONFIG_IMAGE2_DEMUXER |
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static const AVClass img2_class = { |
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.class_name = "image2 demuxer", |
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.item_name = av_default_item_name, |
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.option = options, |
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.version = LIBAVUTIL_VERSION_INT, |
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}; |
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AVInputFormat ff_image2_demuxer = { |
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.name = "image2", |
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.long_name = NULL_IF_CONFIG_SMALL("image2 sequence"), |
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.priv_data_size = sizeof(VideoDemuxData), |
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.read_probe = read_probe, |
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.read_header = read_header, |
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.read_packet = read_packet, |
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.flags = AVFMT_NOFILE, |
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.priv_class = &img2_class, |
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}; |
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#endif |
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#if CONFIG_IMAGE2PIPE_DEMUXER |
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static const AVClass img2pipe_class = { |
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.class_name = "image2pipe demuxer", |
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.item_name = av_default_item_name, |
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.option = options, |
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.version = LIBAVUTIL_VERSION_INT, |
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}; |
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AVInputFormat ff_image2pipe_demuxer = { |
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.name = "image2pipe", |
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.long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"), |
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.priv_data_size = sizeof(VideoDemuxData), |
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.read_header = read_header, |
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.read_packet = read_packet, |
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.priv_class = &img2pipe_class, |
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}; |
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#endif |
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@ -0,0 +1,151 @@ |
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/*
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* Image format |
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
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* Copyright (c) 2004 Michael Niedermayer |
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* |
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* This file is part of Libav. |
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* |
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* Libav 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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* Libav 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 Libav; 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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#include "libavutil/intreadwrite.h" |
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#include "libavutil/avstring.h" |
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#include "libavutil/log.h" |
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#include "avformat.h" |
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#include "avio_internal.h" |
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#include "internal.h" |
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typedef struct { |
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int img_number; |
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int is_pipe; |
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char path[1024]; |
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} VideoMuxData; |
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static int write_header(AVFormatContext *s) |
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{ |
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VideoMuxData *img = s->priv_data; |
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img->img_number = 1; |
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av_strlcpy(img->path, s->filename, sizeof(img->path)); |
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/* find format */ |
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if (s->oformat->flags & AVFMT_NOFILE) |
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img->is_pipe = 0; |
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else |
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img->is_pipe = 1; |
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return 0; |
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} |
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static int write_packet(AVFormatContext *s, AVPacket *pkt) |
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{ |
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VideoMuxData *img = s->priv_data; |
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AVIOContext *pb[3]; |
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char filename[1024]; |
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AVCodecContext *codec= s->streams[ pkt->stream_index ]->codec; |
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int i; |
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|
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if (!img->is_pipe) { |
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if (av_get_frame_filename(filename, sizeof(filename), |
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img->path, img->img_number) < 0 && img->img_number>1) { |
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av_log(s, AV_LOG_ERROR, |
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"Could not get frame filename number %d from pattern '%s'\n", |
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img->img_number, img->path); |
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return AVERROR(EIO); |
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} |
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for(i=0; i<3; i++){ |
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if (avio_open2(&pb[i], filename, AVIO_FLAG_WRITE, |
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&s->interrupt_callback, NULL) < 0) { |
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av_log(s, AV_LOG_ERROR, "Could not open file : %s\n",filename); |
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return AVERROR(EIO); |
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} |
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if(codec->codec_id != CODEC_ID_RAWVIDEO) |
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break; |
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filename[ strlen(filename) - 1 ]= 'U' + i; |
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} |
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} else { |
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pb[0] = s->pb; |
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} |
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|
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if(codec->codec_id == CODEC_ID_RAWVIDEO){ |
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int ysize = codec->width * codec->height; |
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avio_write(pb[0], pkt->data , ysize); |
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avio_write(pb[1], pkt->data + ysize, (pkt->size - ysize)/2); |
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avio_write(pb[2], pkt->data + ysize +(pkt->size - ysize)/2, (pkt->size - ysize)/2); |
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avio_flush(pb[1]); |
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avio_flush(pb[2]); |
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avio_close(pb[1]); |
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avio_close(pb[2]); |
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}else{ |
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if(ff_guess_image2_codec(s->filename) == CODEC_ID_JPEG2000){ |
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AVStream *st = s->streams[0]; |
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if(st->codec->extradata_size > 8 && |
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AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){ |
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if(pkt->size < 8 || AV_RL32(pkt->data+4) != MKTAG('j','p','2','c')) |
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goto error; |
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avio_wb32(pb[0], 12); |
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ffio_wfourcc(pb[0], "jP "); |
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avio_wb32(pb[0], 0x0D0A870A); // signature
|
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avio_wb32(pb[0], 20); |
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ffio_wfourcc(pb[0], "ftyp"); |
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ffio_wfourcc(pb[0], "jp2 "); |
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avio_wb32(pb[0], 0); |
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ffio_wfourcc(pb[0], "jp2 "); |
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avio_write(pb[0], st->codec->extradata, st->codec->extradata_size); |
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}else if(pkt->size < 8 || |
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(!st->codec->extradata_size && |
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AV_RL32(pkt->data+4) != MKTAG('j','P',' ',' '))){ // signature
|
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error: |
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av_log(s, AV_LOG_ERROR, "malformed JPEG 2000 codestream\n"); |
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return -1; |
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} |
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} |
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avio_write(pb[0], pkt->data, pkt->size); |
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} |
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avio_flush(pb[0]); |
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if (!img->is_pipe) { |
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avio_close(pb[0]); |
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} |
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|
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img->img_number++; |
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return 0; |
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} |
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|
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#if CONFIG_IMAGE2_MUXER |
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AVOutputFormat ff_image2_muxer = { |
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.name = "image2", |
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.long_name = NULL_IF_CONFIG_SMALL("image2 sequence"), |
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.extensions = "bmp,dpx,jpeg,jpg,ljpg,pam,pbm,pcx,pgm,pgmyuv,png," |
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"ppm,sgi,tga,tif,tiff,jp2,xwd,sun,ras,rs,im1,im8,im24," |
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"sunras", |
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.priv_data_size = sizeof(VideoMuxData), |
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.video_codec = CODEC_ID_MJPEG, |
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.write_header = write_header, |
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.write_packet = write_packet, |
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.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS | AVFMT_NOFILE |
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}; |
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#endif |
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#if CONFIG_IMAGE2PIPE_MUXER |
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AVOutputFormat ff_image2pipe_muxer = { |
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.name = "image2pipe", |
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.long_name = NULL_IF_CONFIG_SMALL("piped image2 sequence"), |
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.priv_data_size = sizeof(VideoMuxData), |
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.video_codec = CODEC_ID_MJPEG, |
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.write_header = write_header, |
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.write_packet = write_packet, |
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.flags = AVFMT_NOTIMESTAMPS | AVFMT_NODIMENSIONS |
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}; |
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#endif |
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