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author | Michael Niedermayer <michaelni@gmx.at> | 2012-05-10 22:41:29 +0200 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2012-05-10 23:30:42 +0200 |
commit | 015903294ca983f007ab5cae098a54013e77f2f6 (patch) | |
tree | 66838f53dca82964270a1938692489c36e1fb1b0 /libavcodec/vcr1.c | |
parent | 2a793ff2bf2197f36db3bf296668d44915142d03 (diff) | |
parent | 110d0cdc9d1ec414a658f841a3fbefbf6f796d61 (diff) | |
download | ffmpeg-015903294ca983f007ab5cae098a54013e77f2f6.tar.gz |
Merge remote-tracking branch 'qatar/master'
* qatar/master: (25 commits)
rv40dsp x86: MMX/MMX2/3DNow/SSE2/SSSE3 implementations of MC
ape: Use unsigned integer maths
arm: dsputil: fix overreads in put/avg_pixels functions
h264: K&R formatting cosmetics for header files (part II/II)
h264: K&R formatting cosmetics for header files (part I/II)
rtmp: Implement check bandwidth notification.
rtmp: Support 'rtmp_swfurl', an option which specifies the URL of the SWF player.
rtmp: Support 'rtmp_flashver', an option which overrides the version of the Flash plugin.
rtmp: Support 'rtmp_tcurl', an option which overrides the URL of the target stream.
cmdutils: Add fallback case to switch in check_stream_specifier().
sctp: be consistent with socket option level
configure: Add _XOPEN_SOURCE=600 to Solaris preprocessor flags.
vcr1enc: drop pointless empty encode_init() wrapper function
vcr1: drop pointless write-only AVCodecContext member from VCR1Context
vcr1: group encoder code together to save #ifdefs
vcr1: cosmetics: K&R prettyprinting, typos, parentheses, dead code, comments
mov: make one comment slightly more specific
lavr: replace the SSE version of ff_conv_fltp_to_flt_6ch() with SSE4 and AVX
lavfi: move audio-related functions to a separate file.
lavfi: remove some audio-related function from public API.
...
Conflicts:
cmdutils.c
libavcodec/h264.h
libavcodec/h264_mvpred.h
libavcodec/vcr1.c
libavfilter/avfilter.c
libavfilter/avfilter.h
libavfilter/defaults.c
libavfilter/internal.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/vcr1.c')
-rw-r--r-- | libavcodec/vcr1.c | 217 |
1 files changed, 102 insertions, 115 deletions
diff --git a/libavcodec/vcr1.c b/libavcodec/vcr1.c index 2a25982531..13aded9122 100644 --- a/libavcodec/vcr1.c +++ b/libavcodec/vcr1.c @@ -21,39 +21,57 @@ /** * @file - * ati vcr1 codec. + * ATI VCR1 codec */ #include "avcodec.h" #include "dsputil.h" -//#undef NDEBUG -//#include <assert.h> - -/* Disable the encoder. */ -#undef CONFIG_VCR1_ENCODER -#define CONFIG_VCR1_ENCODER 0 - -typedef struct VCR1Context{ - AVCodecContext *avctx; +typedef struct VCR1Context { AVFrame picture; int delta[16]; int offset[4]; } VCR1Context; -static int decode_frame(AVCodecContext *avctx, - void *data, int *data_size, - AVPacket *avpkt) +static av_cold void common_init(AVCodecContext *avctx) +{ + VCR1Context *const a = avctx->priv_data; + + avctx->coded_frame = &a->picture; + avcodec_get_frame_defaults(&a->picture); +} + +static av_cold int decode_init(AVCodecContext *avctx) +{ + common_init(avctx); + + avctx->pix_fmt = PIX_FMT_YUV410P; + + return 0; +} + +static av_cold int decode_end(AVCodecContext *avctx) +{ + VCR1Context *s = avctx->priv_data; + + if (s->picture.data[0]) + avctx->release_buffer(avctx, &s->picture); + + return 0; +} + +static int decode_frame(AVCodecContext *avctx, void *data, + int *data_size, AVPacket *avpkt) { - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - VCR1Context * const a = avctx->priv_data; - AVFrame *picture = data; - AVFrame * const p = &a->picture; - const uint8_t *bytestream= buf; + const uint8_t *buf = avpkt->data; + int buf_size = avpkt->size; + VCR1Context *const a = avctx->priv_data; + AVFrame *picture = data; + AVFrame *const p = &a->picture; + const uint8_t *bytestream = buf; int i, x, y; - if(p->data[0]) + if (p->data[0]) avctx->release_buffer(avctx, p); if(buf_size < 16 + avctx->height + avctx->width*avctx->height*5/8){ @@ -61,57 +79,57 @@ static int decode_frame(AVCodecContext *avctx, return AVERROR(EINVAL); } - p->reference= 0; - if(avctx->get_buffer(avctx, p) < 0){ + p->reference = 0; + if (avctx->get_buffer(avctx, p) < 0) { av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); return -1; } - p->pict_type= AV_PICTURE_TYPE_I; - p->key_frame= 1; + p->pict_type = AV_PICTURE_TYPE_I; + p->key_frame = 1; - for(i=0; i<16; i++){ - a->delta[i]= *(bytestream++); + for (i = 0; i < 16; i++) { + a->delta[i] = *bytestream++; bytestream++; } - for(y=0; y<avctx->height; y++){ + for (y = 0; y < avctx->height; y++) { int offset; - uint8_t *luma= &a->picture.data[0][ y*a->picture.linesize[0] ]; + uint8_t *luma = &a->picture.data[0][y * a->picture.linesize[0]]; - if((y&3) == 0){ - uint8_t *cb= &a->picture.data[1][ (y>>2)*a->picture.linesize[1] ]; - uint8_t *cr= &a->picture.data[2][ (y>>2)*a->picture.linesize[2] ]; + if ((y & 3) == 0) { + uint8_t *cb = &a->picture.data[1][(y >> 2) * a->picture.linesize[1]]; + uint8_t *cr = &a->picture.data[2][(y >> 2) * a->picture.linesize[2]]; - for(i=0; i<4; i++) - a->offset[i]= *(bytestream++); + for (i = 0; i < 4; i++) + a->offset[i] = *bytestream++; - offset= a->offset[0] - a->delta[ bytestream[2]&0xF ]; - for(x=0; x<avctx->width; x+=4){ - luma[0]=( offset += a->delta[ bytestream[2]&0xF ]); - luma[1]=( offset += a->delta[ bytestream[2]>>4 ]); - luma[2]=( offset += a->delta[ bytestream[0]&0xF ]); - luma[3]=( offset += a->delta[ bytestream[0]>>4 ]); - luma += 4; + offset = a->offset[0] - a->delta[bytestream[2] & 0xF]; + for (x = 0; x < avctx->width; x += 4) { + luma[0] = offset += a->delta[bytestream[2] & 0xF]; + luma[1] = offset += a->delta[bytestream[2] >> 4]; + luma[2] = offset += a->delta[bytestream[0] & 0xF]; + luma[3] = offset += a->delta[bytestream[0] >> 4]; + luma += 4; - *(cb++) = bytestream[3]; - *(cr++) = bytestream[1]; + *cb++ = bytestream[3]; + *cr++ = bytestream[1]; - bytestream+= 4; + bytestream += 4; } - }else{ - offset= a->offset[y&3] - a->delta[ bytestream[2]&0xF ]; - - for(x=0; x<avctx->width; x+=8){ - luma[0]=( offset += a->delta[ bytestream[2]&0xF ]); - luma[1]=( offset += a->delta[ bytestream[2]>>4 ]); - luma[2]=( offset += a->delta[ bytestream[3]&0xF ]); - luma[3]=( offset += a->delta[ bytestream[3]>>4 ]); - luma[4]=( offset += a->delta[ bytestream[0]&0xF ]); - luma[5]=( offset += a->delta[ bytestream[0]>>4 ]); - luma[6]=( offset += a->delta[ bytestream[1]&0xF ]); - luma[7]=( offset += a->delta[ bytestream[1]>>4 ]); - luma += 8; - bytestream+= 4; + } else { + offset = a->offset[y & 3] - a->delta[bytestream[2] & 0xF]; + + for (x = 0; x < avctx->width; x += 8) { + luma[0] = offset += a->delta[bytestream[2] & 0xF]; + luma[1] = offset += a->delta[bytestream[2] >> 4]; + luma[2] = offset += a->delta[bytestream[3] & 0xF]; + luma[3] = offset += a->delta[bytestream[3] >> 4]; + luma[4] = offset += a->delta[bytestream[0] & 0xF]; + luma[5] = offset += a->delta[bytestream[0] >> 4]; + luma[6] = offset += a->delta[bytestream[1] & 0xF]; + luma[7] = offset += a->delta[bytestream[1] >> 4]; + luma += 8; + bytestream += 4; } } } @@ -122,62 +140,6 @@ static int decode_frame(AVCodecContext *avctx, return buf_size; } -#if CONFIG_VCR1_ENCODER -static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){ - VCR1Context * const a = avctx->priv_data; - AVFrame *pict = data; - AVFrame * const p = &a->picture; - int size; - - *p = *pict; - p->pict_type= AV_PICTURE_TYPE_I; - p->key_frame= 1; - - avpriv_align_put_bits(&a->pb); - while(get_bit_count(&a->pb)&31) - put_bits(&a->pb, 8, 0); - - size= get_bit_count(&a->pb)/32; - - return size*4; -} -#endif - -static av_cold void common_init(AVCodecContext *avctx){ - VCR1Context * const a = avctx->priv_data; - - avctx->coded_frame = &a->picture; - avcodec_get_frame_defaults(&a->picture); - a->avctx= avctx; -} - -static av_cold int decode_init(AVCodecContext *avctx){ - - common_init(avctx); - - avctx->pix_fmt= PIX_FMT_YUV410P; - - return 0; -} - -static av_cold int decode_end(AVCodecContext *avctx){ - VCR1Context *s = avctx->priv_data; - - if (s->picture.data[0]) - avctx->release_buffer(avctx, &s->picture); - - return 0; -} - -#if CONFIG_VCR1_ENCODER -static av_cold int encode_init(AVCodecContext *avctx){ - - common_init(avctx); - - return 0; -} -#endif - AVCodec ff_vcr1_decoder = { .name = "vcr1", .type = AVMEDIA_TYPE_VIDEO, @@ -190,14 +152,39 @@ AVCodec ff_vcr1_decoder = { .long_name = NULL_IF_CONFIG_SMALL("ATI VCR1"), }; +/* Disable the encoder. */ +#undef CONFIG_VCR1_ENCODER +#define CONFIG_VCR1_ENCODER 0 + #if CONFIG_VCR1_ENCODER +static int encode_frame(AVCodecContext *avctx, unsigned char *buf, + int buf_size, void *data) +{ + VCR1Context *const a = avctx->priv_data; + AVFrame *pict = data; + AVFrame *const p = &a->picture; + int size; + + *p = *pict; + p->pict_type = AV_PICTURE_TYPE_I; + p->key_frame = 1; + + avpriv_align_put_bits(&a->pb); + while (get_bit_count(&a->pb) & 31) + put_bits(&a->pb, 8, 0); + + size = get_bit_count(&a->pb) / 32; + + return size * 4; +} + AVCodec ff_vcr1_encoder = { .name = "vcr1", .type = AVMEDIA_TYPE_VIDEO, .id = CODEC_ID_VCR1, .priv_data_size = sizeof(VCR1Context), - .init = encode_init, + .init = common_init, .encode = encode_frame, .long_name = NULL_IF_CONFIG_SMALL("ATI VCR1"), }; -#endif +#endif /* CONFIG_VCR1_ENCODER */ |