mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
223 lines
7.5 KiB
C
223 lines
7.5 KiB
C
|
/*
|
||
|
* Copyright (c) 2015 Ludmila Glinskih
|
||
|
*
|
||
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
* of this software and associated documentation files (the "Software"), to deal
|
||
|
* in the Software without restriction, including without limitation the rights
|
||
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
|
* copies of the Software, and to permit persons to whom the Software is
|
||
|
* furnished to do so, subject to the following conditions:
|
||
|
*
|
||
|
* The above copyright notice and this permission notice shall be included in
|
||
|
* all copies or substantial portions of the Software.
|
||
|
*
|
||
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||
|
* THE SOFTWARE.
|
||
|
*/
|
||
|
|
||
|
/**
|
||
|
* draw_horiz_band test.
|
||
|
*/
|
||
|
|
||
|
#include "libavutil/adler32.h"
|
||
|
#include "libavcodec/avcodec.h"
|
||
|
#include "libavformat/avformat.h"
|
||
|
#include "libavutil/imgutils.h"
|
||
|
|
||
|
uint8_t *slice_byte_buffer;
|
||
|
uint8_t slice_byte_buffer_size;
|
||
|
int draw_horiz_band_called;
|
||
|
|
||
|
static void draw_horiz_band(AVCodecContext *ctx, const AVFrame *fr, int offset[4],
|
||
|
int slice_position, int type, int height)
|
||
|
{
|
||
|
int i;
|
||
|
const AVPixFmtDescriptor *pix_fmt_desc;
|
||
|
int chroma_w, chroma_h;
|
||
|
int shift_slice_position;
|
||
|
int shift_height;
|
||
|
|
||
|
draw_horiz_band_called = 1;
|
||
|
|
||
|
pix_fmt_desc = av_pix_fmt_desc_get(ctx->pix_fmt);
|
||
|
chroma_w = -((-ctx->width) >> pix_fmt_desc->log2_chroma_w);
|
||
|
chroma_h = -((-height) >> pix_fmt_desc->log2_chroma_h);
|
||
|
shift_slice_position = -((-slice_position) >> pix_fmt_desc->log2_chroma_h);
|
||
|
shift_height = -((-ctx->height) >> pix_fmt_desc->log2_chroma_h);
|
||
|
|
||
|
for (i = 0; i < height; i++) {
|
||
|
memcpy(slice_byte_buffer + ctx->width * slice_position + i * ctx->width,
|
||
|
fr->data[0] + offset[0] + i * fr->linesize[0], ctx->width);
|
||
|
}
|
||
|
for (i = 0; i < chroma_h; i++) {
|
||
|
memcpy(slice_byte_buffer + ctx->width * ctx->height + chroma_w * shift_slice_position + i * chroma_w,
|
||
|
fr->data[1] + offset[1] + i * fr->linesize[1], chroma_w);
|
||
|
}
|
||
|
for (i = 0; i < chroma_h; i++) {
|
||
|
memcpy(slice_byte_buffer + ctx->width * ctx->height + chroma_w * shift_height + chroma_w * shift_slice_position + i * chroma_w,
|
||
|
fr->data[2] + offset[2] + i * fr->linesize[2], chroma_w);
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static int video_decode(const char *input_filename)
|
||
|
{
|
||
|
AVCodec *codec = NULL;
|
||
|
AVCodecContext *origin_ctx = NULL, *ctx= NULL;
|
||
|
uint8_t *byte_buffer = NULL;
|
||
|
AVFrame *fr = NULL;
|
||
|
AVPacket pkt;
|
||
|
AVFormatContext *fmt_ctx = NULL;
|
||
|
int number_of_written_bytes;
|
||
|
int video_stream;
|
||
|
int got_frame = 0;
|
||
|
int byte_buffer_size;
|
||
|
int result;
|
||
|
int end_of_stream = 0;
|
||
|
|
||
|
draw_horiz_band_called = 0;
|
||
|
|
||
|
result = avformat_open_input(&fmt_ctx, input_filename, NULL, NULL);
|
||
|
if (result < 0) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "Can't open file\n");
|
||
|
return result;
|
||
|
}
|
||
|
|
||
|
result = avformat_find_stream_info(fmt_ctx, NULL);
|
||
|
if (result < 0) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "Can't get stream info\n");
|
||
|
return result;
|
||
|
}
|
||
|
|
||
|
video_stream = av_find_best_stream(fmt_ctx, AVMEDIA_TYPE_VIDEO, -1, -1, NULL, 0);
|
||
|
if (video_stream < 0) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "Can't find video stream in input file\n");
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
origin_ctx = fmt_ctx->streams[video_stream]->codec;
|
||
|
|
||
|
codec = avcodec_find_decoder(origin_ctx->codec_id);
|
||
|
if (!codec) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "Can't find decoder\n");
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
ctx = avcodec_alloc_context3(codec);
|
||
|
if (!ctx) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "Can't allocate decoder context\n");
|
||
|
return AVERROR(ENOMEM);
|
||
|
}
|
||
|
|
||
|
result = avcodec_copy_context(ctx, origin_ctx);
|
||
|
if (result) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "Can't copy decoder context\n");
|
||
|
return result;
|
||
|
}
|
||
|
|
||
|
ctx->draw_horiz_band = draw_horiz_band;
|
||
|
ctx->thread_count = 1;
|
||
|
|
||
|
result = avcodec_open2(ctx, codec, NULL);
|
||
|
if (result < 0) {
|
||
|
av_log(ctx, AV_LOG_ERROR, "Can't open decoder\n");
|
||
|
return result;
|
||
|
}
|
||
|
|
||
|
fr = av_frame_alloc();
|
||
|
if (!fr) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "Can't allocate frame\n");
|
||
|
return AVERROR(ENOMEM);
|
||
|
}
|
||
|
|
||
|
if (strcmp(codec->name, "flv") && strcmp(codec->name, "mpeg4") && strcmp(codec->name, "huffyuv")) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "Wrong codec\n");
|
||
|
return -1;
|
||
|
}
|
||
|
|
||
|
byte_buffer_size = av_image_get_buffer_size(ctx->pix_fmt, ctx->width, ctx->height, 32);
|
||
|
byte_buffer = av_malloc(byte_buffer_size);
|
||
|
if (!byte_buffer) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n");
|
||
|
return AVERROR(ENOMEM);
|
||
|
}
|
||
|
|
||
|
slice_byte_buffer = av_malloc(byte_buffer_size);
|
||
|
if (!slice_byte_buffer) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "Can't allocate buffer\n");
|
||
|
return AVERROR(ENOMEM);
|
||
|
}
|
||
|
memset(slice_byte_buffer, 0, byte_buffer_size);
|
||
|
slice_byte_buffer_size = byte_buffer_size;
|
||
|
|
||
|
av_init_packet(&pkt);
|
||
|
do {
|
||
|
if (!end_of_stream) {
|
||
|
if (av_read_frame(fmt_ctx, &pkt) < 0) {
|
||
|
end_of_stream = 1;
|
||
|
}
|
||
|
}
|
||
|
if (end_of_stream) {
|
||
|
pkt.data = NULL;
|
||
|
pkt.size = 0;
|
||
|
}
|
||
|
if (pkt.stream_index == video_stream || end_of_stream) {
|
||
|
got_frame = 0;
|
||
|
result = avcodec_decode_video2(ctx, fr, &got_frame, &pkt);
|
||
|
if (result < 0) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "Error decoding frame\n");
|
||
|
return result;
|
||
|
}
|
||
|
if (got_frame) {
|
||
|
number_of_written_bytes = av_image_copy_to_buffer(byte_buffer, byte_buffer_size,
|
||
|
(const uint8_t* const *)fr->data, (const int*) fr->linesize,
|
||
|
ctx->pix_fmt, ctx->width, ctx->height, 1);
|
||
|
if (number_of_written_bytes < 0) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "Can't copy image to buffer\n");
|
||
|
return number_of_written_bytes;
|
||
|
}
|
||
|
if (draw_horiz_band_called == 0) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "draw_horiz_band haven't been called!\n");
|
||
|
return -1;
|
||
|
}
|
||
|
if (av_adler32_update(0, (const uint8_t*)byte_buffer, number_of_written_bytes) !=
|
||
|
av_adler32_update(0, (const uint8_t*)slice_byte_buffer, number_of_written_bytes)) {
|
||
|
av_log(NULL, AV_LOG_ERROR, "Decoded frames with and without draw_horiz_band are not the same!\n");
|
||
|
return -1;
|
||
|
}
|
||
|
}
|
||
|
av_free_packet(&pkt);
|
||
|
av_init_packet(&pkt);
|
||
|
}
|
||
|
} while (!end_of_stream || got_frame);
|
||
|
|
||
|
av_free_packet(&pkt);
|
||
|
av_frame_free(&fr);
|
||
|
avcodec_close(ctx);
|
||
|
avformat_close_input(&fmt_ctx);
|
||
|
avcodec_free_context(&ctx);
|
||
|
av_freep(&byte_buffer);
|
||
|
av_freep(&slice_byte_buffer);
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int main(int argc, char **argv)
|
||
|
{
|
||
|
if (argc < 2)
|
||
|
{
|
||
|
av_log(NULL, AV_LOG_ERROR, "Incorrect input: expected %s <name of a video file>\nNote that test works only for huffyuv, flv and mpeg4 decoders\n", argv[0]);
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
av_register_all();
|
||
|
|
||
|
if (video_decode(argv[1]) != 0)
|
||
|
return 1;
|
||
|
|
||
|
return 0;
|
||
|
}
|